ARMY TM 9-2350-264-10-1

MARINE CORPS TM 08953A-10/1-1

TECHNICAL MANUAL
OPERATOR'S MANUAL
FOR

TANK, COMBAT, FULL-TRACKED:

120 MM GUN, M1A1
(NSN 2350-01-087-1095) (EIC: AAB)
GENERAL ABRAMS

VOLUME 1 OF 3

SUPERSEDURE NOTICE: In conjunction with ARMY TM 9-2350-264-10-2 and MARINE CORPS TM 08953A-10/1-2, and ARMY
TM 9-2350-264-10-3 and MARINE CORPS TM 08953A-10/1-3, TM 9-2350-264-10-1 dated 07 September 2011 supersedes ARMY
TM 9-2350-264-10-1 and MARINE CORPS TM 08953A-10/1-1, and ARMY TM 9-2350-264-10-2 and MARINE CORPS TM
08953A-10/1-2, 05 March 2003, including all changes.

DISTRIBUTION STATEMENT D. Distribution authorized to the Department of Defense and U.S. DoD contractors only. This determi-
nation was made on 01 March 17. Other requests for this document shall be referred to: U.S. Army TACOM Life Cycle Management
Command, ATTN: AMSTA-LCG-FWC/TECH PUBS, MS 510, 6501 E. Eleven Mile Road, Warren MI 48397-5000.
WARNING. This document contains technical data whose export is restricted by the Arms Export Control
Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979 (Title 50, U.S.C., App. 2401
et seq.), as amended. Violations of these export laws are subject to severe criminal penalties. Disseminate
in accordance with provisions of DoD Directive 5230.25.
DESTRUCTION NOTICE. For classified documents, follow the procedures in DOD 5220.22-M, National Industrial Security
Program Operating Manual and/or DODM 5200.01, Information Security Program. For unclassified, limited documents, destroy by
any method that will prevent disclosure of contents or reconstruction of the document.

HEADQUARTERS, DEPARTMENT OF THE ARMY

HEADQUARTERS, U.S. MARINE CORPS
07 SEPTEMBER 2011 PCN 184 089530 00
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WARNING SUMMARY
This warning summary contains general safety warnings and hazardous materials warnings that
must be understood and applied during operation and maintenance of this equipment. Failure to
observe these precautions could result in serious injury or death to personnel. Also included are
explanations of safety and hazardous materials icons used within the technical manual. For
information on first aid, refer to TC 4-02.1.
EXPLANATION OF GENERAL SAFETY WARNING ICONS

WARNING

SINGLE EAR PROTECTION

Headphones over ears shows that noise level will harm ears.

WARNING

DOUBLE EAR PROTECTION

Headphones and earmuffs, or earplugs, over ears shows that noise

level will harm ears.

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WARNING

TURRET MOVEMENT

Human figure shows turret movement presents a danger to life or

limb.

WARNING

VAPOR

Human figure in a cloud shows that material vapors present a danger

to life or health.

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GENERAL SAFETY WARNINGS DESCRIPTION

WARNING

You can be blinded if you look into a laser beam when you are not
wearing laser safety goggles. Never aim the laser rangefinder at per-
sonnel.

If laser beam reflects from a flat, mirrorlike surface, it can blind you
unless you are wearing laser safety goggles.

All people who work downrange of the laser must wear laser safety
goggles. Laser safety goggles,
NSN 4240-00-258-2054, or an approved substitute, will protect you.

Treat the laser rangefinder as a direct-fire weapon, with hazardous

range of 5 miles (8 kilometers). Observe the following precautions
when the laser rangefinder is being used:
1. Never fire the laser rangefinder at a target less than 33 feet (10 meters) away.
2. Never fire the laser rangefinder at flat glass or mirrorlike targets.
3. Never fire the laser rangefinder if gunner's primary sight window is cracked.
4. Fire the laser rangefinder only at approved laser targets on an approved laser-firing range.
5. Report through the chain of command if:

a. An unprotected person may have been in the beam path and closer than 5 miles (8 kilo-
meters) when the laser rangefinder was fired.

b. An unprotected person was looking at a flat glass or mirrorlike surface when the laser
rangefinder was fired at it.

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NOTE

Person in charge must arrange for necessary eye examination and

report in accordance with AR 385-10 and AR 385-63.
6. Make sure you get laser safety training before you work near an operating laser.

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WARNING

HIGH VOLTAGE
is used in the operation of this equipment.
DEATH ON CONTACT
may result if personnel fail to observe safety precautions.
Never work on electronic equipment unless there is at least one other person nearby who is
familiar with the operation and hazards of that equipment. That person should also be compe-
tent in giving first aid. When operators help a technician, they must be warned about dangerous
areas.
Whenever possible, shut off the power supply to equipment before beginning work. When work-
ing inside the equipment with power off, take special care to ground capacitors likely to hold a
dangerous potential.
Be careful not to contact high-voltage connections when installing or operating this equipment.
Whenever possible, keep one hand away from the equipment to reduce the hazard of current
flowing through vital organs of the body.

WARNING

Do not be misled by the term low voltage. Voltages as low as 50 volts

may cause death.

For artificial respiration, refer to TC 4-02.1.

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WARNING

CARBON MONOXIDE (EXHAUST GAS) CAN KILL YOU

Carbon monoxide is without color or smell, but can kill you. Breathing air with carbon monoxide
produces symptoms of headache, dizziness, loss of muscular control, a sleepy feeling, and
coma. Brain damage or death can result from heavy exposure. Carbon monoxide occurs in the
exhaust fumes of fuel-burning heaters and internal combustion engines, and in fumes caused
by firing. Carbon monoxide can become dangerously concentrated under conditions of no air
movement. Precautions must be followed to insure crew safety when the personnel heater or
main or auxiliary engine of any vehicle is operated for any purpose.
1. DO NOT operate personnel heater or engine of vehicle in a closed place unless the place is
well-ventilated.
2. DO NOT idle engine for long periods of time without the NBC main system on. If tactical situ-
ation permits, open hatches.
3. DO NOT operate Nuclear, Biological, Chemical (NBC) system or use M42 mask, or if
equipped, M51 mask to protect against carbon monoxide. They will only get rid of odors which
would normally indicate the presence of carbon monoxide.
4. DO NOT drive any vehicle with inspection plates, cover plates, or engine compartment doors
removed unless necessary for maintenance purposes.
5. DO NOT fire coax machinegun without NBC main system on.
6. BE ALERT at all times during vehicle operation for exhaust odors and exposure symptoms. If
either is present, IMMEDIATELY VENTILATE personnel compartments. If symptoms persist,
remove affected crew to fresh air; keep warm; DO NOT PERMIT PHYSICAL EXERCISE; if
necessary, give artificial respiration and get immediate medical attention (see TC 4-02.1).
THE BEST DEFENSE AGAINST CARBON MONOXIDE POISONING
IS GOOD VENTILATION.

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WARNING

SINGLE HEARING PROTECTION REQUIRED

Wear hearing protection during engine operation. Consult diagram below to determine where
hearing protection is required. Single hearing protection includes earplugs, earmuffs, attenuating
Combat Vehicle Crewman (CVC) helmet, or headset. Failure to wear hearing protection can
result in hearing damage.

WARNING

DOUBLE HEARING PROTECTION REQUIRED

Noise levels during ground hop support system operation exceed allowable limits. Wear double
hearing protection during operation of this system. Double hearing protection consists of wear-
ing earplugs or earmuffs, with either an attenuating Combat Vehicle Crewman (CVC) helmet or
headset. Failure to wear double hearing protection can result in hearing damage.

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ADDITIONAL HEARING PROTECTION REQUIREMENTS

Table 1. Hearing Protection Requirements with CVC and Earplugs.

Time limit in minutes per 24 hours for personnel in tank

wearing CVC helmet or CVC helmet with earplugs.

Speed CVC and

MPH CVC Helmet Earplugs

Idle 780 NO LIMIT

10 83 NO LIMIT
20 27 480
30 22 282
40 16 174

NOTE

The idle condition includes idling up to 1300 rpm, all air handlers on,
NBC system on, and other tank noise sources, inside tank, operating.

Table 2. Hearing Protection Requirements with VIS CVC, ANR, and Earplugs.

Time limit in minutes per 24 hours for personnel in tank

wearing VIS CVC helmet with ANR ON and OFF.
Earplugs, VIS
Speed VIS CVC, VIS CVC CVC,
MPH ANR OFF ANR ON ANR ON or OFF

Idle NO LIMIT NO LIMIT NO DATA

10 123 1154 NO DATA
20 36 347 NO DATA
30 29 269 NO DATA
40 23 138 NO DATA

NOTE
• The idle condition includes idling up to 1300 rpm, all air handlers
on, system on, and other tank noise sources, inside tank, operat-
ing.
• If a combination of speeds is used, the ANR should be on if the
total distance traveled at any speed is expected to be more than
12 miles in any 24-hour period. With the ANR on, the limit is 92
miles.

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WARNING

GUN/TURRET MOVEMENT
Do not place any part of the body through the opening between driver's station and turret unless
turret lock is locked and turret power is off.
Do not place any part of the body above/below the main gun breech unless main gun elevation
travel lock is locked and turret power is off.
Alert crew by announcing "POWER" and make sure all areas around turret, main gun, and
breech are cleared before operating main gun or turret, or before operating palm switches. Injury
or death could result if turret is traversed while body parts are extended between turret and hull
or if main gun is moved while body parts are near breech or gun tube.
Keeps hands away from operating breech.
When palm switches are depressed, main gun or turret can move suddenly if any of the follow-
ing conditions exist:
1. MRS UPDATE menu is displayed on gunner's control and display panel.
2. GUN/TURRET DRIVE switch on loader's panel is in POWERED position and FIRE CON-
TROL MODE switch on Gunner's Primary Sight (GPS) is in NORMAL or EMERGENCY posi-
tion.
3. GUN/TURRET DRIVE switch on loader's panel is moved to or from EL UNCPL position.
4. FIRE CONTROL MODE switch is in NORMAL or EMERGENCY position and main gun is over
rear deck and is below 0 degrees elevation.
5. AMMO SELECT switch is pushed to change from one ammo type to another.
6. TARGET RANGE is changed.
7. BALLISTIC SOLUTIONS run in NORMAL mode, with hydraulics active.

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SUMMARY OF WARNINGS

WARNING

CHEMICAL

• Degreasing solvent is toxic and flammable. To avoid injury, wear protective goggles and gloves
and use only in a well-ventilated area. Avoid contact with skin, eyes, and clothes, and do not
breathe vapors. Do not use near open fire or excessive heat. The flashpoint for Type I degreas-
ing solvent is 100° F (38° C), and for Type II is 141° F (61° C). If you become dizzy while using
degreasing solvent, get fresh air immediately and get medical aid. If contact with eyes is made,
wash your eyes with water and get medical aid immediately.

• Do not handle expended primers immediately after firing without using an asbestos mitten.

• Do not clean 120 mm tank ammunition with abrasive material or solvents that can remove
paint.

• Engine and Nuclear, Biological, Chemical (NBC) main system must be operating when coax
machine gun is being fired. If main NBC system is not operating, toxic fumes within the turret
will quickly exceed allowable exposure limits.

• Fire Resistant Hydraulic (FRH) fluid may contain tricresyl phosphate which, if taken internally,
can produce paralysis. FRH fluid may be absorbed through the skin. Wear long sleeves, gloves,
goggles, and faceshield. If FRH fluid gets in eyes, wash them immediately and get medical aid
immediately. If FRH fluid gets on skin, thoroughly wash with soap and water. Wash hands thor-
oughly prior to eating or smoking. Application of these measures is considered an effective
control of the hazard.

• Engine lubricating oils (MIL-PRF-23699 and MIL-PRF-7808) may contain tricresyl phosphate
which, if taken internally, can produce paralysis. Lubricating oil may be absorbed through the
skin. Wear long sleeves, gloves, goggles, and face- shield. If lubricating oil gets in eyes, wash
them immediately and get medical aid immediately. If lubricating oil gets on skin, thoroughly
wash with soap and water. Wash hands thoroughly prior to eating or smoking. Application of
these measures is considered an effective control of the hazard.

• Do not overfill fuel tanks.

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EAR PROTECTION

• Personnel must wear single hearing protection within 704 meters (770 yd) of the M1A1 tank
when firing its main gun.

• Ear plugs and CVC helmet must be worn when driving tank or when a crewman's head is pro-
truding out of open hatches while main gun is being fired, damage to hearing could result.

• All outside personnel must remain at least 50 meters (55 yd) from tank during firing.
ELECTRICAL
• Remove rings, bracelets, wristwatches, and neck chains before working around the tank. Jew-
elry can catch on equipment and cause injury, or may short across an electrical circuit and
cause severe burns or electrical shock.

• Tools may short across positive and negative conductor busses and cause burns or electrical
shock. To avoid injury when working in battery compartment make sure that tools do not short
circuit batteries.

• When slave starting tank do not short slave cable connector ends.

• Do not touch transmit antennas on turret.

• Personnel should not carry any unauthorized wireless/electronic devices when performing
uploading, downloading, and pre-firing operations.

• Tank personnel should never operate any tactical radio in 200-280 MHz frequency range, when
performing unloading, downloading, and pre-firing operations. If possible, operate the tactical
radio in it's hopping mode.

• The primer electrode is the mechanism for transferring electrical or radio frequency (RF)
energy to the primer to cause initiation. Energy is transferred if only the center electrode of the
primer is being touched. During ammunition handling/loading, a hand may contact the aft cap,
primer and center electrode at the same time without risk. there is danger when ONLY the cen-
ter electrode is contacted.
EYE PROTECTION
• Always wear safety glasses when working on the hydraulic system. If hydraulic fluid gets in
your eyes, you can be blinded.

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EXPLOSION

• Do not strike primer when passing or stowing 120 mm ammunition.

• Do not hammer or strike 120 mm projectile during removal of stuck round.

• Do not use rammer shaft on misfired round without bell housing installed.

• Do not attempt to move a dud smoke grenade.

• Do not stand directly over front of smoke grenade discharger when loading or unloading gre-
nades.

• Do not board tank if turret feels warm to the touch or ammunition is heard exploding. Injury or
death to personnel could result.

• Do not insert a round into an ammunition stowage tube that is missing a spring clip. When
opening the ready ammunition door, the round may be severed if not properly secured.

• Non-compliance with the warnings around unpackaged tank ammunition (e.g., inside/around
tank, during upload, download, depot, or ammunition operations) could result in serious injury
or death.

• Maintain a safe separation distance (SSD) of 30 meters (~99 feet) between vehicles/personnel
operating UHF radios in the 200-280 MHz frequency range, and operation involving unpack-
aged tank ammunition.

• Always wear gloves (e.g., combat vehicle crewman type, MIL-G-44108) when handling main
gun ammunition. The human body absorbs RF energy that could be transferred to the primer
electrode.

• Never attempt to clean the primer or the primer electrode on the aft face of the cartridge by
touching the primer or electrode with any object or tool.

• To clean ammunition, wipe it clean with a dry, clean, soft rag. Do not use abrasive material or
cleaning solvent. If this amount of cleaning is not sufficient, DO NOT USE the cartridge, return
to the ASP/QASAS.

• Do not stow the M831A1, M865 and M1002 training ammunition in the Abrams tank during
combat operations.

• M831A1, M865 and M1002 training ammunition will not be stored in the hull ammunition com-
partment due to the vulnerability of the propellant. Crews should load only enough training
ammunition in the bustle compartments to achieve gunnery objectives during training.

• Do not fire any ammunition with bare combustible case material exposed. Ammunition planned
for use in training exercises should be inspected for any evidence of bare combustible case
material and damage case prior to uploading the vehicle. If cartridge with damage case or bare
case material, premature ignition could occur during chambering.

• Explosive/flammable materials are a fire hazard. Do not store aerosol cans, cleaning solvent,
fuel, etc., anywhere inside tank. Stow ammunition in authorized areas only.

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FALLING PARTS

• Each crewmember must ensure all loose items and equipment are firmly secured prior to tank
movement. Loose items and equipment can cause severe injury or death.

• Once nut or bolt has been removed, release trigger mechanism immediately. Continued opera-
tion of impact wrench may propel nut or bolt captured in socket causing injury to personnel.

• Heavy items, such as roadwheels or track blocks, must not be stowed in the bustle rack exten-
sion. Excessive weight in the extended bustle rack may cause the supporting structure or mesh
in the bottom of the rack to fail. Heavy items must be stowed in accordance with the combat
load plan for the tank. Only personal type gear and lightweight items are to be put in the bustle
rack extension.
FIRE
• Turbine engine exhaust gases are very hot. Under the right conditions, they can ignite dry veg-
etation or other combustible materials. The fires that result could injure personnel and damage
equipment. When operating in dry conditions, pay attention to the material around the rear of
the tank during halts and if possible, shut down engine to avoid setting fire to dry vegetation.

• Do not start engine if external fire extinguisher handle has been pulled.

• When fueling tank, make sure a crewmember stands by with fire extinguisher.

• Do not turn on SMOKE GENERATOR switch if tank is using any fuel other than diesel.

• Leaking oil, fuel, hydraulic fluid, and electrolyte are fire hazards that can cause injury or death.
Upon complete evacuation of all crewmembers, tank should be inspected for these hazards.
Stand by with portable fire extinguisher when inspecting tank for leaks in case of fire.

• If SPONSON OVERHEAT RED warning lights come on, immediately shut down main NBC
system. Continued use of main NBC system will result in an NBC filter fire.

• If vehicle is equipped with Redesigned Hull Networks Box (RHNB) and OVERHEAT SPON-
SON INPUT or OUTPUT message appears in Status Message Display (SMD), immediately
shut down main NBC system. Continued use of main NBC system will result in an NBC filter
fire.
FLYING PARTICLES
• Compressed air used for cleaning purposes will not exceed 30 psi. Use only with effective
chip-guarding and personal protective equipment (goggles/faceshield, gloves, etc.).

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HEAVY PARTS

• Keep all personnel away from any vehicle being retrieved with tow cables. Crewmembers must
operate with hatches closed when tow cables are being used for retrieval.

• Do not open two skirts at the same time that have the same hinge line. Hinge lines are
between: skirt number one and skirt number two, skirt number three and skirt number four, and
skirt number five and skirt number six.

• Do not leave driver's station when engine is running.

• Never move tank without ground guide(s) or tank commander.

• Engine power will not slow or stop tank. Slow or stop tank with service and/or parking brakes.

• Do not permit personnel between tanks during slave starting or towing.

• Bustle compartment ready ammunition door cannot be stopped during the last 1/2 inch (1.3
cm) of its closing travel.

• Do not park tank on an incline during PMCS parking brake system check, unless down-slope
ends of both tracks are blocked. When doing the zero pressure check, the vehicle has no brake
system in operation.

• Make sure driver's hatch is closed before firing main gun or operating turret in stabilized mode.

• At first indication of a rollover, drop down inside turret and brace for impact. Exposed person-
nel could be thrown from tank, causing injury or death. Do not attempt evacuation from
unstable tank. Evacuate with caution when tank has stabilized.

• Ensure all hatches are in open-lock position, if possible, before evacuating. An unlocked open
hatch can fall, causing injury or death.

• Turret lock must be locked if crewmembers pass between hull and turret during evacuation.
Turret/hull could move, causing injury or death to crewmembers.

• Added weight in the bustle rack extension can cause the rear of the turret to rotate toward the
downhill side when the tank is parked on a slope and the turret traverse lock is disengaged.
Make sure turret lock is engaged if bustle rack extension is loaded and tank is parked on a
slope. Immediately restrain the turret when the turret lock mechanism is disengaged.

• Driver must not evacuate until turret is locked and command DRIVER EVACUATE is given. A
traversing turret could cause injury or death.

• GUN TURRET DRIVE switch must be in MANUAL or EL UNCPL and main gun status SAFE
light lit before servicing coaxial machinegun.
HOT AREA
• Rear grille doors and pintle may be hot enough to burn bare hands.

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MISCELLANEOUS

• M1A1 hatches seal tightly when closed. The oxygen supply inside the tank can rapidly become
depleted (during non-firing, closed operations with the NBC system off). To avoid possible
death through suffocation, ventilate tank by opening hatches or turning on NBC MAIN system
at least once per hour for approximately 5 minutes.

• Do not water ford unless depth of water is known.

• Make sure weapons are cleared before installing, loading, checking, or removing weapons.

• Remember to always set manual safety to SAFE position until ready to fire. Accidental firing of
weapons can kill or seriously injure personnel.

• Do not reload a machinegun after stopping an uncontrolled firing.

• In case of run-away firing of 7.62 mm machinegun, pull and hold charging cable rearward to
stop gun from firing.

• When on top of tank, always maintain three points of contact (for example, two feet and one
hand).

• Do not operate electric impact wrench without retainer ring installed. Doing so may cause
socket and/or square drive extension to come loose causing injury to personnel.

• On vehicles equipped with TCP (part number 12549797-3), NBC main system will shut down
automatically in two minutes when OVERHEAT SPONSON IN or OVERHEAT SPONSON OUT
warning light illuminates if not turned off manually using NBC MAIN MODE switch. On vehicles
equipped with UTCP (part number 12473169), NBC main system will be shut down automati-
cally in two minutes when SPONSON OVHT IN or SPONSON OVHT OUT warning light illumi-
nates if not turned off manually using NBC MAIN pushbutton.
MOVING PARTS
• Keep hands away from operating breech.

• Do not place any part of body through opening between driver's station and turret unless tur-
ret traverse lock is locked.

• Keep hands clear of vertical slide racks when pressing lever to release catch.

• Make sure area around turret, main gun, and breech are clear before moving turret or gun.

• Do not put feet through turret basket when on loader's platform. You could be badly injured if
turret moves.

• Main gun may move abruptly when GUN/TURRET DRIVE switch is moved from or to EL
UNCPL position.

• Hatches should not be operated while vehicle is moving, except in case of emergency.

• Before traversing turret, alert crew and make sure all personnel are clear of turret. Crewmem-
bers can be injured or killed if turret is traversed while body parts are extended between turret
and hull.

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POISON

• Do not touch, ingest or inhale particles of a broken lens (front window of Infrared Viewer). Lens
contains germanium, which is slightly toxic if ingested or inhaled. Glass may be sharp enough
to cut personnel if touched. Dispose of germanium lenses in accordance with local environ-
mental regulations.
SHARP OBJECT
• Keep loader's knee switch in stowed (up) position and latched when not in use.
SLICK FLOOR
• Wipe up spilled fuel immediately with rags. Spread dry sweep or sand on spill. You can slip and
fall on spilled fuel.
VAPOR
• Keep hatches closed and all personnel 200 m (219 yd) from a tank with a misfired smoke gre-
nade.

• 120 mm ammunition can burn rapidly even if powder/propellant is not spilled. Toxic fumes are
released when ammunition is burning, and can cause injury or death to personnel.

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WARNING

Ammunition containing explosives must be handled with care at all

times. The explosive in primers and fuses is very sensitive to shock
and high temperature. If ammunition is dropped, thrown, tumbled, or
dragged, an explosion may result, causing death or injury and
destruction of equipment. Disassembly of ammunition is not autho-
rized.

WARNING

Shock waves resulting from firing main gun will cause injury. Loader's
and commander's heads must be below hatch level when main gun
is fired.

WARNING

DO NOT FIRE MAIN GUN IF IT IS PLUGGED

Always check the main gun tube before it is fired. If gun is plugged when fired it could bulge,
affecting accuracy, or it could burst causing injury or death.
Use the following precautions to avoid plugging the gun tube or firing the gun when gun tube is
plugged:
1. Use muzzle cover when main gun is not in use.
2. When necessary, elevate main gun to prevent striking the ground.
3. Check the gun tube if you suspect it has been plugged, and clean it when necessary.

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EXPLANATION OF HAZARDOUS MATERIALS WARNING ICONS

WARNING

RADIATION

Three circular wedges shows that the material emits radioactive

energy and can injure human tissue.

WARNING

VAPOR

A human figure in a cloud shows that material vapors present a dan-

ger to life or health.

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HAZARDOUS MATERIALS WARNINGS DESCRIPTION

WARNING

RADIATION HAZARD
Safety Precautions
This item contains radioactive material. Control of this radioactive material is mandated by fed-
eral law. Immediately report any suspected lost or damaged items to your Local Radiation Safety
Officer (LRSO) and the NRC License RSO.
Tritium (H3)
Fire control devices contain luminescent phosphor activated by radioactive tritium gas sealed in
glass capsules. The self-luminous sources are regulated by a Nuclear Regulatory Commission
(NRC) license issued to TACOM LCMC (21-32838-01). Removal of the sources in the field is
prohibited by Federal law.
Users of fire control devices are required to perform visual checks of the fire control equipment
before, during, and after operation. A loss of illumination may indicate the source is broken.
Contact the LRSO to perform wipe tests for contamination and if contaminated, DO NOT
ATTEMPT TO REPAIR IT. The item is to be turned into the LRSO for disposition as radioactive
waste through Joint Munitions Command (JMC). Also, if the tritium component is cracked, con-
tact the LRSO to perform wipe tests for contamination. If contaminated, DO NOT ATTEMPT TO
REPAIR IT, turn it into the LRSO for disposition as radioactive waste through JMC. If it is
damaged/broken, DO NOT ATTEMPT TO REPAIR IT, the item must be turned into the LRSO to
perform wipe tests for contamination and disposition as radioactive waste through JMC. If the
tritium component is cracked, but not contaminated, the item must be turned in as a whole item
for disposition to an authorized licensed depot for repair/demil in accordance with item manager
disposition instructions. Also, any repairs to the tritium component requiring tools or if difficult to
perform, requires the item to be shipped to the authorized licensed depot in accordance with
item manager disposition instructions. Disposable gloves will be worn when handling the broken/
damaged/cracked and non-illuminating tritium component and the component or next higher
assembly will be double bagged in clear plastic bags, the bags sealed and mark the bags:
BROKEN TRITIUM DEVICE-DO NOT OPEN (For Broken/Damaged/Contaminated Non-
illuminating), or For Cracked with Contamination (BROKEN TRITIUM DEVICE - DO NOT
OPEN) or For Cracked No Contamination (CRACKED NOT CONTAMINATED TRITIUM - DO
NOT OPEN) or For Not Contaminated Non-illuminating Tritium - NOT CONTAMINATED NON-
ILLUMINATING TRITIUM - DO NOT OPEN. Disposition instructions must be obtained from the
item manager. If breakage occurs while handling the device, restrict area and immediately notify
your LRSO and NRC License RSO.
Maintenance and storage areas are to be ventilated. The storage area must be posted, secured
and easily decontaminable. Tritium Repair Shops require quarterly surveys by a LRSO or trained
technician to monitor for tritium contamination. The tritium repair shop must have work benches
that are covered with absorbent paper (e.g., kraft paper) and spare parts in the maintenance
area kept to a minimum.

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The NRC License RSO can be reached at the TACOM LCMC MSO Safety Engineering Office at
COM (586) 282-6194/7635 or DSN 786-6194/7635.
Thorium (Th232)
The anti-reflective coating on all thermal optics in the gunner's primary sight are coated with
thorium fluoride (ThF4) which is slightly radioactive. The only potential hazard involves ingestion
or inhalation of this coating material. For radiological control instructions of broken lenses, con-
tact CECOM Safety Office at COM (443) 395-3834/3790 or DSN 648-3834/3790.
Contact your LRSO for further information prior to performing maintenance on subject items.
CECOM holds the NRC license (19-31447-01) for the thorium coating used on the gunner's pri-
mary sight. The LRSO will contact the item manager for disposition instructions.
The M1 series tank contains a turbine engine combustor liner. The liner is a metallic alloy com-
posed of thorium 232 evenly dispersed in nickel. If the liner breaks or melts, call your LRSO. In
coordination with LRSO, bag liner and all pieces. RSO will contact the item manager for disposi-
tion instructions. Disposal is not authorized below depot level. Unserviceable combustor liners
will be disposed of as radioactive waste or sent to a licensed thorium rework facility in the Army.
The combustor liner is a nonrepairable component. The only maintenance function allowed is
replacement with a new one. Combustor liners separated from vehicle engines will be tagged/
labeled with the words RADIOACTIVE MATERIAL-TH232 and otherwise labeled in accordance
with MIL-STD-129. The combustor liner is regulated through an Army Radiation Authorization
(ARA) A21-12-05, issued to TACOM LCMC. The ARA RSO can be reached at the TACOM
LCMC MSO Safety Engineering Office at COM (586) 282-6194/7635 or DSN 786-6194/7635.
Depleted Uranium (DU or U238)
DU is a metal used in munitions and M1A1/M1A2 tank armor because of its high density. Dam-
age or fire to the DU munitions/armor may result in contaminated smoke, ash, or dust (refer to
TB 9-1300-278, AR 700-48, DA PAM 700-48, and the Abrams Security Classification Guide). DU
is an internal health hazard if inhaled, ingested, or embedded in skin. It presents both radiologi-
cal and toxicological effects. If handling bare metal is necessary, gloves must be worn. Joint
Munitions Command (JMC) holds the NRC license for the DU munitions (SUC 1380). The local
RSO will notify the JMC License RSO and JMC Item Manager for disposition instructions for
unserviceable ammunition. The armor is completely encased and presents no hazard unless it
is opened up exposing the DU armor. The LRSO will notify the TACOM LCMC License RSO and
TACOM LCMC item manager for disposition instructions if armor is ruptured or penetrated.
TACOM LCMC holds the NRC license for the DU armor (SUB 1536). Exposure to radiation in
the crew compartment of an undamaged tank, by the DU munitions and armor, is minimal. The
DU Armor NRC License RSO can be reached at the TACOM LCMC MSO Safety Engineering
Office at COM (586) 282-6194/7635 or DSN 786-6194/7635.
Engine Spark Igniters
The engines of the M1 series tank contain engine igniters that have nickel 63, cesium 137, and
krypton 85 radioactive materials. Hazards exist with these items when they are broken open or
when they are stored in bulk quantities. If either of these conditions exist the LRSO must be
notified. The LRSO will take action to mitigate the conditions and notify TACOM LCMC Army
Radiation Authorization (ARA) RSO. The spark igniters are licensed through ARA A21-12-04,
issued to TACOM LCMC. The ARA RSO can be reached at the TACOM LCMC MSO Safety
Engineering Office at COM (586) 282-6194/7635 or DSN 786-6194/7635.
Identification and Disposal
Radioactive materials are identified by warning labels. These labels should not be removed and
should be replaced immediately when necessary. Dispose of radioactive materials in accor-
dance with AR 11-9, Army Radiation Safety Program. Command NICP information is contained
in TB 43-0116, Identification of Radioactive Items in the Army.

Change 4 t
 TM 9-2350-264-10-1

Rules and Regulation

Copies of the following rules and regulations may be obtained from the commands listed in the
paragraph below.
Title 10 CFR Part 19 - Notices, Instructions, and Reports to Workers; Inspections
Title 10 CFR Part 20 - Standards for Protection Against Radiation
Title 10 CFR Part 21 - Reporting of Defects and Noncompliance
Storage Site Posting Documents
NRC License, license conditions, and license application
Additional Information
Upon notification of fire/breakage or theft/loss of licensed materials, Local Radiation Safety
Officer (LRSO) or Chemical, Biological, Radiological, and Nuclear (CBRN) Officer/NCO should
immediately notify the RSO at the following appropriate offices:
Tritium Fire Control Devices, Thorium Combustor Liners, DU Armor, and Engine Spark Igniters :
HQ TACOM LCMC, ATTN: AMSTA-MSP-Z, 6501 E. Eleven Mile Road, Warren, MI 48397-5000,
COM (586) 282-6194/7635 or DSN 786-6194/7635.
Thorium Coated Optics : HQ, CECOM, ATTN: AMSEL-SF-R, 3200 Raritan Avenue, Aberdeen
Proving Ground, MD 21005, COM (443) 395-3834/3790 or DSN 648-3834/3790.
DU Ammunition : HQ, JMC, ATTN: AMSJM-SF, 2695 Rodman Ave., Rock Island, IL 61299-6000,
COM (309) 782-0338/2113/2969 or DSN 793-0338/2113/2969 and Operations Center at COM
(309) 782-7270 or DSN 793-7270.
Contact the installation/garrison safety office for the name and telephone number of your LRSO
or CBRN Officer/NCO.
First Aid
For further information on first aid, refer to TC 4-02.1.

u Change 4
 TM 9-2350-264-10-1

WARNING

HEALTH/ENVIRONMENTAL HAZARD
Gas particulate filters use ACS Whetlerite Carbon which contains Chromium VI. Chromium VI is
a known carcinogen if inhaled or swallowed. Damaged or unusable filters are classified as haz-
ardous waste:
1. DO NOT throw away any damaged or unusable filters as ordinary trash.
2. DO turn in damaged or unusable filters to your hazardous waste management office of local
Defense Reutilization and Marketing Office (DRMO).
3. Gas particulate filters are completely safe to handle and use if they are not damaged in such
a way that carbon leaks from them. In the unlikely event that carbon should leak, use protec-
tion such as a self-sealing plastic bag; turn in to the hazardous waste management office or
DRMO.
4. Disposal of hazardous waste is restricted by the Resource Conservation and Recovery Act
as amended (42 U.S.C.A. sec 6901 et seq). Violation of these laws is subject to severe crimi-
nal penalties.

Change 4 v
 TM 9-2350-264-10-1

WARNING

NUCLEAR, BIOLOGICAL, OR CHEMICAL

HANDLE CAREFULLY
After Nuclear, Biological, or Chemical (NBC) exposure of this vehicle, all air filters must be
handled with extreme caution. Unprotected personnel may experience injury or death if residual
toxic agents or radioactive material are present. If vehicle is exposed to chemical or biological
agents, servicing personnel must wear protective mask, hood, protective overgarment, and
chemical-protective gloves and boots. All contaminated air filters must be placed in double-lined
plastic bags and swiftly moved to a segregation area away from the work site. The same proce-
dure applies for radioactive dust contamination; however, the company NBC team should mea-
sure the radiation prior to filter removal to determine the extent of safety procedures required in
accordance with the NBC Annex to the unit Standing Operating Procedures (SOP). The segre-
gation area in which the contaminated air filters are temporarily stored must be marked with
appropriate NBC placards. Final disposal of contaminated air filters shall be in accordance with
local SOP. Refer to TB 43-0219 for more information.

w Change 4
 TM 9-2350-264-10-1

INFRARED RADIATION HAZARD

Missile countermeasure device (MCD) radiates infrared (IR) energy from the front side during
operation. Unprotected exposure to front side during operation can cause burns to skin or eyes.
MCD gets extremely hot during operation. MCD will remain dangerously hot for some time after
being shut down. Touching any part of the MCD can cause injury when MCD is hot.

• Do not look at front side of MCD when MCD is in operation from closer than 12 feet (3.7 m).

• Do not touch MCD while in operation without protective equipment.

• Do not touch MCD after operation until MCD has cooled to a safe level. Wait at least 10 min-
utes and then test before touching.

• Do not cover MCD after operation until MCD is cool to the touch.

Change 4 x
 ARMY TM 9-2350-264-10-1
MARINE CORPS TM 08953A-10/1-1
CHANGE
HEADQUARTERS,
NO. 4 DEPARTMENT OF THE ARMY
HEADQUARTERS,
U.S. MARINE CORPS
Washington, D.C., 15 January 2018

TECHNICAL MANUAL

OPERATOR'S MANUAL
FOR

TANK, COMBAT, FULL-TRACKED:

120 MM GUN, M1A1
NSN 2350-01-087-1095 (EIC: AAB)
GENERAL ABRAMS
VOLUME 1 OF 3

DISTRIBUTION STATEMENT D. Distribution authorized to the Department of Defense and U.S. DoD con-
tractors only. This determination was made on 01 March 17. Other requests for this document shall be referred
to: U.S. Army TACOM Life Cycle Management Command, ATTN: AMSTA-LCG-FWC/TECH PUBS, MS 510,
6501 E. Eleven Mile Road, Warren, MI 48397-5000.
WARNING. This document contains technical data whose export is restricted by the Arms Export Control
Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979 (Title 50, U.S.C., App. 2401
et seq.), as amended. Violations of these export laws are subject to severe criminal penalties. Disseminate
in accordance with provisions of DoD Directive 5230.25.
DESTRUCTION NOTICE: For classified documents, follow the procedures in DOD 5220.22-M, National
Industrial Security Program Operating Manual and/or DODM 5200.01, Information Security Program. For
unclassified, limited documents, destroy by any method that will prevent disclosure of contents or reconstruc-
tion of the document.

TM 9-2350-264-10-1, dated 07 September 2011, is updated as follows:

1. File this change sheet in front of the publication for reference purposes.
2. This change is the result of new Mounted Family of Computer Systems (MFoCS) and Slew To
Cue (STC) procedures.
3. New or changed material is indicated by a vertical bar in the margin of the page.
4. Remove old pages and insert new pages as indicated below.

Remove Pages Insert Pages

a thru x a thru x
A thru D A thru D
i thru xxi/xxii blank i thru xxi/xxii blank
Front Cover Front Cover

5. Replace the following work packages with their revised version.

WP 0001
WP 0035
WP 0039
WP 0042
WP 0042.2

MARINE CORPS PCN: 184 089530 04

 TM 9-2350-264-10-1
C4
WP 0043
WP 0059
WP 0098
WP 0102
WP 0104
WP 0115
WP 0116
WP 0118

6. Add the following new work package.

WP 0112.2
 TM 9-2350-264-10-1, C4
15 January 2018

By Order of the Secretary of the Army:

MARK A. MILLEY
General, United States Army
Chief of Staff

Official:

GERALD B. O’KEEFE
Administrative Assistant to the
Secretary of the Army
1734861

By Order of the Marine Corps:

BRADLEY J. SAMS
LTCOL USMC
Program Manager, Fires (PMM 142)
Marine Corps Systems Command

DISTRIBUTION:
Initially published in electronic media only. When funds become available,
this publication will be distributed in accordance with the initial distribution
number (IDN) 371211, requirements for TM 9-2350-264-10-1.

Marine Corps PCN: 184 089530 04

 ARMY TM 9-2350-264-10-1
MARINE CORPS TM 08953A-10/1-1
CHANGE
HEADQUARTERS,
NO. 3 DEPARTMENT OF THE ARMY
HEADQUARTERS,
U.S. MARINE CORPS
Washington, D.C., 02 January 2015

TECHNICAL MANUAL

OPERATOR'S MANUAL
FOR

TANK, COMBAT, FULL-TRACKED:

120 MM GUN, M1A1
NSN 2350-01-087-1095 (EIC: AAB)
GENERAL ABRAMS

VOLUME 1 OF 3

DISTRIBUTION STATEMENT C: Distribution authorized to U.S. Government agencies and their contractors
for administrative or operational purposes only. This determination was made on 01 Jun 93. Other requests for
this document shall be referred to: U.S. Army TACOM Life Cycle Management Command, ATTN: AMSTA-
LCG-FW, MS 510, 6501 E. 11 Mile Road, Warren, MI 48397-5000.
WARNING. This document contains technical data whose export is restricted by the Arms Export Control
Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979 (Title 50, U.S.C., App. 2401
et seq.), as amended. Violations of these export laws are subject to severe criminal penalties. Disseminate
in accordance with provisions of DoD Directive 5230.25.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction
of the document.
TM 9-2350-264-10-1, dated 07 September 2011, is updated as follows:
1. File this change sheet in front of the publication for reference purposes.
2. This change is the result of the new External Auxiliary Power Unit (EAPU) and Armament
Accuracy Check procedures.
3. New or changed material is indicated by a vertical bar in the margin of the page.
4. Remove old pages and insert new pages as indicated below.

Remove Pages Insert Pages

A thru D A thru D
i thru xxi/xxii blank i thru xxi/xxii blank
Sample 2028 and sample back Sample 2028 and sample back
2028 and back 2028 and back
2028 and back 2028 and back
2028 and back 2028 and back
Front Cover Front Cover
5. Replace the following work packages with their revised version.
WP 0001
WP 0002
WP 0006
WP 0008
WP 0012
WP 0014
WP 0023

MARINE CORPS PCN: 184 089530 03

 TM 9-2350-264-10-1
C3
WP 0026
WP 0033
WP 0036
WP 0042.2
WP 0043
WP 0051
WP 0058
WP 0069
WP 0094.1
WP 0098.1
WP 0112.1
WP 0113.1
WP 0114
WP 0115
WP 0116.1
WP 0117
WP 0118
WP 0122
WP 0122.1
WP 0123.1
By Order of the Secretary of the Army:
RAYMOND T. ODIERNO
General, United States Army
Chief of Staff

Official:

GERALD B. O'KEEFE
Administrative Assistant to the
Secretary of the Army
1433801

By Order of the Marine Corps: J.F. SHRADER

Colonel, USMC Systems Command
Program Manager, Armor and Fire Support Systems

DISTRIBUTION:
Initially published in electronic media only. When funds become available, this
publication will be distributed in accordance with the initial distribution number
(IDN) 371211 requirements for TM 9-2350-264-10-1.

MARINE CORPS PCN: 184 089530 03

 ARMY TM 9-2350-264-10-1
MARINE CORPS TM 08953A-10/1-1
HEADQUARTERS,
DEPARTMENT OF THE ARMY
CHANGE
HEADQUARTERS,
NO. 2 U.S. MARINE CORPS
Washington, D.C.,14 MAY 2013

TECHNICAL MANUAL

OPERATOR'S MANUAL
FOR

TANK, COMBAT, FULL-TRACKED:

120 MM GUN, M1A1
NSN 2350-01-087-1095 (EIC: AAB)
GENERAL ABRAMS

VOLUME 1 OF 3

DISTRIBUTION STATEMENT C: Distribution authorized to U.S. Government agencies and their contractors
for administrative or operational purposes only. This determination was made on 01 Jun 93. Other requests for
this document shall be referred to: U.S. Army TACOM Life Cycle Management Command, ATTN: AMSTA-LCL-
MPP/TECH PUBS, MS 727, 6501 E. 11 Mile Road, Warren, MI 48397-5000.
WARNING. This document contains technical data whose export is restricted by the Arms Export Control
Act (Title 22, U.S.C., Sec 2751, et seq) or the Export Administration Act of 1979, as amended, Title 50,
U.S.C., App. 2401 et seq. Violations of these export laws are subject to severe criminal penalties.
Disseminate in accordance with provisions of DoD Directive 5230.25.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction
of the document.
TM 9-2350-264-10-1, dated 07 September 2011, is updated as follows:
1. File this change sheet in front of the publication for reference purposes.
2. This change is the result of the new Stabilized Commander's Weapon Station (SCWS) proce-
dures.
3. New or changed material is indicated by a vertical bar in the margin of the page.
4. Remove old pages and insert new pages as indicated below.

Remove Pages Insert Pages

A thru D A thru D
i thru xx i-xxi/xxii blank
None 2028 Front/Back
Front Cover Front Cover
5. Replace the following work packages with their revised version.
WP 0001
WP 0002
WP 0043
WP 0114
WP 0117
WP 0118
6. Add the following new work packages.
WP 0042.2
WP 0094.1
WP 0098.1
WP 0112.1
WP 0113.1
WP 0116.1
MARINE CORPS PCN: 184 089530 02
 TM 9-2350-264-10-1
C2
WP 0119.1
WP 0122.1
WP 0123.1
By Order of th e Secretary of th e Army:
RAYMOND T. ODIERNO
General, United States Army
Chief of Staff

Official:

JOYCE E. MORROW
Administrative Assistant to the
Secretary of the Army
1311409

By Order of th e Marin e Corps:

J.F. SHRADER
Colonel, USMC Systems Command
Program Manager, Armor and Fire Support Systems

DISTRIBUTION: To be distributed in accordance with the initial distribution

number (IDN) 371211 requirements for TM 9-2350-264-10-1

MARINE CORPS PCN: 184 089530 02

 TM 9-2350-264-10-1
MARINE CORPS TM 08953A-10/1-1 C1
CHANGE
HEADQUARTERS,
NO. 1 DEPARTMENT OF THE ARMY
Washington, D.C., 29 October 2012

TECHNICAL MANUAL

OPERATOR'S MANUAL
FOR

TANK, COMBAT, FULL-TRACKED:

120 MM GUN, M1A1
NSN 2350-01-087-1095 (EIC: AAB)
GENERAL ABRAMS

VOLUME 1 OF 3

DISTRIBUTION STATEMENT C: Distribution authorized to U.S. Government agencies and their contractors
for administrative or operational purposes only. This determination was made on 01 Jun 93. Other requests for
this document shall be referred to: U.S. Army TACOM Life Cycle Management Command, ATTN: AMSTA-LCL-
MPP/TECH PUBS, MS 727, 6501 E. 11 Mile Road, Warren, MI 48397-5000.

WARNING. This document contains technical data whose export is restricted by the Arms Export Control
Act (Title 22, U.S.C., Sec 2751, et seq) or the Export Administration Act of 1979, as amended, Title 50A,
U.S.C., App. Violations of these export laws are subject to severe criminal penalties. Disseminate in
accordance with provisions of DoD Directive 5230.25.

DESTRUCTION NOTICE: Destroy by any method that will prevent disclosure of contents or reconstruction
of the document.
TM 9-2350-264-10-1, dated 07 September 2011, is updated as follows:
1. File this change sheet in front of the publication for reference purposes.
2. This change is the result of the new Armament Accuracy Check (AAC), Counter RCIED Elec-
tronic Warfare II (CREWII) and Loader's Armored Gun Shield (LAGS) procedures.
3. New or changed material is indicated by a vertical bar in the margin of the page.
4. Remove old pages and insert new pages as indicated below.

Remove Pages Insert Pages

a thru x a thru x
A thru D A thru D
i thru xx i thru xx
Front Cover and blank Front Cover and PIN
 TM 9-2350-264-10-1
C1
5. Replace the following work packages with their revised version.
WP 0001
WP 0002
WP 0031
WP 0043
WP 0058
WP 0065
WP 0066
WP 0114

6. Add the following new work packages.

WP 0042.1
WP 0090.1
By Order of the Secretary of the Army:
RAYMOND T. ODIERNO
General, United States Army
Chief of Staff

Official:

JOYCE E. MORROW
Administrative Assistant to the
Secretary of the Army
1226906

By Order of the Marine Corps:

J.M. GARNER
Product Group Director
Marine Corps Systems Command

DISTRIBUTION: To be distributed in accordance with the initial distribution

number (IDN) 371211 requirements for TM 9-2350-264-10-1

MARINE CORPS PCN: 184 089530 01

 TM 9-2350-264-10-1

LIST OF EFFECTIVE PAGES/WORK PACKAGES

Note: In conjunction with ARMY TM 9-2350-264-10-2 and MARINE CORPS TM 08953A-10/
1-2, and ARMY TM 9-2350-264-10-3 and MARINE CORPS TM 08953A-10/1-3, TM
9-2350-264-10-1 dated 07 September 2011 supersedes ARMY TM 9-2350-264-10-1 and
MARINE CORPS TM 08953A-10/1-1, and ARMY TM 9-2350-264-10-2 and MARINE
CORPS TM 08953A-10/1-2, 05 March 2003, including all changes. The portion of text
affected by the change is indicated by a vertical bar in the outer margins of the page.
Changes to illustrations are indicated by a vertical bar adjacent to the title. Zero in the
Change No. column indicates an original page or work package.

Date of issue for the original manual is:

Original . . . .. . . . . . . . .07 September 2011

Change 1 . . . . . . . . . . . . . 29 October 2012
Change 2 . . . . . . . . . . . . . . . .14 May 2013
Change 3 . . . . . . . . . . . 02 January 2015
Change 4 . . . . . . . . . . . . 15 January 2018

TOTAL NUMBER OF VOLUMES IS 3, TOTAL NUMBER OF PAGES FOR FRONT AND REAR MATTER IS
232 AND TOTAL NUMBER OF WORK PACKAGES IS 574, CONSISTING OF THE FOLLOWING:

Page/WP Change Page/WP Change Page/WP Change

No. No. No. No. No. No.

VOLUME 1 WP 0032 (2 pgs) 0 WP 0063 (2 pgs) 0

Front Cover 4 WP 0033 (2 pgs) 3 WP 0064 (2 pgs) 0
Warn Sum (24 pgs) 4 WP 0034 (2 pgs) 0 WP 0065 (6 pgs) 1
i-xxi/xxii blank 4 WP 0035 (4 pgs) 4 WP 0066 (2 pgs) 1
Chp 1 title page 0 WP 0036 (2 pgs) 3 WP 0067 (2 pgs) 0
WP 0001 (14 pgs) 4 WP 0037 (2 pgs) 0 WP 0068 (4 pgs) 0
WP 0002 (16 pgs) 3 WP 0038 (4 pgs) 0 WP 0069 (2 pgs) 3
WP 0003 (2 pgs) 0 WP 0039 (4 pgs) 4 WP 0070 (2 pgs) 0
WP 0004 (2 pgs) 0 WP 0040 (2 pgs) 0 WP 0071 (4 pgs) 0
WP 0005 (2 pgs) 0 WP 0041 (2 pgs) 0 WP 0072 (4 pgs) 0
WP 0006 (4 pgs) 3 WP 0042 (2 pgs) 4 WP 0073 (2 pgs) 0
WP 0007 (2 pgs) 0 WP 0042.1 (2 pgs) ADDED 1 WP 0074 (2 pgs) 0
WP 0008 (2 pgs) 3 WP 0042.2 (8 pgs) 4 WP 0075 (2 pgs) 0
WP 0009 (2 pgs) 0 Chp 2 title page 0 WP 0076 (6 pgs) 0
WP 0010 (6 pgs) 0 WP 0043 (68 pgs) 4 WP 0077 (6 pgs) 0
WP 0011 (4 pgs) 0 Chp 3 title page 0 WP 0078 (4 pgs) 0
WP 0012 (4 pgs) 3 WP 0044 (2 pgs) 0 WP 0079 (6 pgs) 0
WP 0013 (4 pgs) 0 WP 0045 (2 pgs) 0 WP 0080 (10 pgs) 0
WP 0014 (4 pgs) 3 WP 0046 (4 pgs) 0 WP 0081 (4 pgs) 0
WP 0015 (2 pgs) 0 WP 0047 (2 pgs) 0 WP 0082 (2 pgs) 0
WP 0016 (4 pgs) 0 WP 0048 (2 pgs) 0 WP 0083 (2 pgs) 0
WP 0017 (2 pgs) 0 WP 0049 (2 pgs) 0 WP 0084 (2 pgs) 0
WP 0018 (2 pgs) 0 Chp 4 title page 0 WP 0085 (34 pgs) 0
WP 0019 (2 pgs) 0 WP 0050 (2 pgs) 0 WP 0086 (6 pgs) 0
WP 0020 (4 pgs) 0 WP 0051 (12 pgs) 3 WP 0087 (4 pgs) 0
WP 0021 (4 pgs) 0 WP 0052 (2 pgs) 0 WP 0088 (2 pgs) 0
WP 0022 (2 pgs) 0 WP 0053 (4 pgs) 0 WP 0089 (2 pgs) 0
WP 0023 (2 pgs) 3 WP 0054 (2 pgs) 0 WP 0090 (2 pgs) 0
WP 0024 (2 pgs) 0 WP 0055 (2 pgs) 0 WP 0090.1 (4 pgs) ADDED 1
WP 0025 (2 pgs) 0 WP 0056 (2 pgs) 0 Chp 5 title page 0
WP 0026 (2 pgs) 3 WP 0057 (2 pgs) 0 WP 0091 (2 pgs) 0
WP 0027 (2 pgs) 0 WP 0058 (16 pgs) 3 WP 0092 (2 pgs) 0
WP 0028 (2 pgs) 0 WP 0059 (8 pgs) 4 WP 0093 (2 pgs) 0
WP 0029 (2 pgs) 0 WP 0060 (4 pgs) 0 WP 0094 (6 pgs) 0
WP 0030 (2 pgs) 0 WP 0061 (4 pgs) 0 WP 0094.1 (10 pgs) 3
WP 0031 (2 pgs) 1 WP 0062 (2 pgs) 0 WP 0095 (2 pgs) 0
USA
A Change 4
 TM 9-2350-264-10-1
Page/WP Change Page/WP Change Page/WP Change
No. No. No. No. No. No.
WP 0096 (4 pgs) 0 WP 0143 (2 pgs) 0 WP 0203 (4 pgs) 0
WP 0097 (2 pgs) 0 WP 0144 (2 pgs) 0 WP 0204 (6 pgs) 0
WP 0098 (6 pgs) 4 WP 0145 (2 pgs) 0 WP 0205 (2 pgs) 0
WP 0098.1 (14 pgs) 3 WP 0146 (2 pgs) 0 WP 0206 (2 pgs) 0
WP 0099 (2 pgs) 0 WP 0147 (6 pgs) 0 WP 0207 (2 pgs) 0
WP 0100 (2 pgs) 0 WP 0148 (12 pgs) 0 WP 0208 (6 pgs) 0
WP 0101 (2 pgs) 0 WP 0149 (2 pgs) 0 WP 0209 (4 pgs) 1
WP 0102 (4 pgs) 4 WP 0150 (8 pgs) 0 WP 0210 (4 pgs) 1
WP 0103 (2 pgs) 0 WP 0151 (2 pgs) 0 WP 0211 (2 pgs) 0
WP 0104 (2 pgs) 4 WP 0152 (2 pgs) 0 WP 0212 (8 pgs) 0
WP 0105 (10 pgs) 0 WP 0153 (4 pgs) 0 WP 0213 (2 pgs) 0
WP 0106 (2 pgs) 0 WP 0154 (6 pgs) 0 WP 0214 (4 pgs) 1
WP 0107 (2 pgs) 0 WP 0155 (4 pgs) 0 WP 0215 (2 pgs) 1
WP 0108 (2 pgs) 0 WP 0156 (4 pgs) 0 WP 0216 (2 pgs) 0
WP 0109 (2 pgs) 0 WP 0157 (6 pgs) 0 WP 0217 (4 pgs) 1
WP 0110 (4 pgs) 0 WP 0158 (4 pgs) 0 WP 0218 (2 pgs) 1
WP 0111 (2 pgs) 0 WP 0159 (4 pgs) 0 WP 0219 (2 pgs) 1
WP 0112 (4 pgs) 0 WP 0160 (2 pgs) 0 WP 0220 (2 pgs) 1
WP 0112.1 (6 pgs) 3 WP 0161 (2 pgs) 0 WP 0221 (2 pgs) 1
WP 0112.2 (4 pgs) ADDED 4 WP 0162 (6 pgs) 0 WP 0222 (2 pgs) 0
WP 0113 (6 pgs) 0 WP 0163 (10 pgs) 0 WP 0223 (2 pgs) 0
WP 0113.1 (6 pgs) 3 WP 0164 (6 pgs) 0 WP 0224 (2 pgs) 0
WP 0114 (8 pgs) 3 WP 0165 (2 pgs) 0 WP 0225 (2 pgs) 0
WP 0115 (4 pgs) 4 WP 0166 (4 pgs) 0 WP 0226 (4 pgs) 0
WP 0116 (6 pgs) 4 WP 0167 (2 pgs) 0 WP 0227 (6 pgs) 0
WP 0116.1 (10 pgs) 3 WP 0168 (4 pgs) 0 WP 0228 (2 pgs) 0
WP 0117 (4 pgs) 3 WP 0169 (2 pgs) 0 WP 0229 (2 pgs) 0
WP 0118 (4 pgs) 4 WP 0170 (6 pgs) 0 WP 0230 (2 pgs) 0
WP 0119 (2 pgs) 0 WP 0171 (2 pgs) 0 WP 0231 (4 pgs) 0
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C Change 4
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Change 4 D USA
 ARMY TM 9-2350-264-10-1
MARINE CORPS TM 08953A-10/1-1
HEADQUARTERS
DEPARTMENT OF THE ARMY
HEADQUARTERS
U.S. MARINE CORPS
Washington, D.C., 07 September 2011

OPERATOR'S MANUAL
FOR
TANK, COMBAT, FULL-TRACKED: 120 MM GUN, M1A1
NSN 2350-01-087-1095 EIC: AAB
GENERAL ABRAMS
VOLUME 1 OF 3
REPORTING ERRORS AND RECOMMENDING IMPROVEMENTS

You can help improve this manual. If you find any mistakes, or if you know of a way to
improve the procedures, please let us know. Reports, as applicable by the requiring service,
should be submitted as follows:
(a) Army (A) - The preferred method is to submit your DA Form 2028 (Recommended
Changes to Publications and Blank Forms) through the Internet on the TACOM Unique
Logistics Support Applications (TULSA) website. The Internet address is
https://tulsa.tacom.army.mil. Access to all applications requires CAC authentication, and you
must complete the Access Request form the first time you use it. The DA Form 2028 is
located under the TULSA Applications on the left-hand navigation bar. Fill out the form and
click on SUBMIT. Using this form on the TULSA website will enable us to respond more
quickly to your comments and better manage the DA Form 2028 program. You may also mail,
e-mail, or fax your comments or DA Form 2028 directly to the U.S. Army TACOM Life Cycle
Management Command. The postal mail address is U.S. Army TACOM Life Cycle Manage-
ment Command, ATTN: AMSTA-LCL-IMP / TECH PUBS, MS 727, 6501 E. 11 Mile Road,
Warren, MI 48397-5000. The e-mail address is usarmy.detroit.tacom.mbx.ilsc-
techpubs@mail.mil. The fax number is DSN 786-1856 or Commercial (586) 282-1856. A
reply will be furnished to you.
(b) Marine Corps (MC) - Discrepancies or suggested changes for this publication may be
reported by submitting a NAVMC 10772. For instructions on how to submit a NAVMC 10772
go to http://www.marcorsyscom.marines.mil/Professional-Staff/SEAL/ALPS/ and click on
"NAVMC 10772 Submittal." Questions or concerns regarding the NAVMC 10772 program
should be reported via email to SMB.LOG.Tech.Pubs.fct@usmc.mil. A reply will be furnished
to you.

SUPERSEDURE NOTICE: In conjunction with ARMY TM 9-2350-264-10-2 and MARINE CORPS TM 08953A-10/1-2, and ARMY
TM 9-2350-264-10-3 and MARINE CORPS TM 08953A-10/1-3, TM 9-2350-264-10-1 dated 07 September 2011 supersedes ARMY
TM 9-2350-264-10-1 and MARINE CORPS TM 08953A-10/1-1, and ARMY TM 9-2350-264-10-2 and MARINE CORPS TM
08953A-10/1-2, 05 March 2003, including all changes.
DISTRIBUTION STATEMENT D. Distribution authorized to the Department of Defense and U.S. DoD con-
tractors only. This determination was made on 01 March 17. Other requests for this document shall be referred
to: U.S. Army TACOM Life Cycle Management Command, ATTN: AMSTA-LCG-FWC/TECH PUBS, MS 510,
6501 E. Eleven Mile Road, Warren, MI 48397-5000.
WARNING. This document contains technical data whose export is restricted by the Arms Export Control
Act (Title 22, U.S.C., Sec 2751, et seq.) or the Export Administration Act of 1979 (Title 50, U.S.C., App. 2401
et seq.), as amended. Violations of these export laws are subject to severe criminal penalties. Disseminate
in accordance with provisions of DoD Directive 5230.25.
DESTRUCTION NOTICE: For classified documents, follow the procedures in DOD 5220.22-M, National
Industrial Security Program Operating Manual and/or DODM 5200.01, Information Security Program. For
unclassified, limited documents, destroy by any method that will prevent disclosure of contents or reconstruc-
tion of the document.

MARINE CORPS PCN: 184 089530 00

i Change 4
 TM 9-2350-264-10-1

TABLE OF CONTENTS
WP #

VOLUME 1

How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . xvii

.

Chapter 1 General Information, Equipment Description, and Theory of

Operation
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0001
Equipment Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0002
Theory of Operation - Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0003
Fuel Requirements - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . WP . 0004
Powerpack (General) - Theory of Operation . . . . . . . . . . . . . . . . . . . WP . 0005
Powerpack (Turbine Engine) - Theory of Operation. . . . . . . . . . . . . . WP . 0006
Powerpack (Transmission) - Theory of Operation . . . . . . . . . . . . . . . WP . 0007
Pulse Jet System (PJS) - Theory of Operation. . . . . . . . . . . . . . . . . . WP . 0008
Fuel System - Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0009
Electrical System - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . WP . 0010
Embedded Diagnostics (ED) System - Theory of
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0011
Hydraulic System - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . WP . 0012
Fire Extinguisher System - Theory of Operation . . . . . . . . . . . . . . . . WP . 0013
Indicator, Caution, and Warning Lights - Theory of
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0014
Fire Power - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0015
Fire Control Modes - Theory of Operation. . . . . . . . . . . . . . . . . . . . . . WP . 0016
Stabilization - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0017
Lead System - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0018
Triggers and Inhibits - Theory of Operation . . . . . . . . . . . . . . . . . . . . . WP . 0019
Gunner's Primary Sight (GPS) - Theory of Operation . . . . . . . . . . . . WP . 0020
Laser Rangefinder (LRF) - Theory of Operation. . . . . . . . . . . . . . . . . WP . 0021
Thermal Imaging System (TIS) - Theory of Operation . . . . . . . . . . . WP . 0022
Ballistic Computer - Theory of Operation. . . . . . . . . . . . . . . . . . . . . . . WP . 0023
Forward Looking Infrared (FLIR) - Army
- Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0024
Firepower Enhancement Program (FEP) Thermal Imaging
System (TIS) - Marine Corps - Theory of Operation . . . . . . . . . . . . . WP . 0025
Remote Thermal Sight (RTS) .50 Cal
Thermal Sight/Day TV System - Theory of Operation . . . . . . . . . . . . WP . 0026
Commander's Weapon Station Remote Thermal Sight
(CWS RTS) - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0027
Commander's Weapon Station (CWS) Day
Sight - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0028
Far Target Location (FTL) - Army - Theory of Operation. . . . . . . . . . WP . 0029
Far Target Location (FTL) - Marine Corps - Theory
of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0030
Muzzle Reference Sensor (MRS) - Theory of Operation . . . . . . . . . WP . 0031
Bilge Pump - Theory of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0032
Boresight and Screening - Theory of Operation . . . . . . . . . . . . . . . . . WP . 0033
Smoke Producing Systems - Theory of Operation. . . . . . . . . . . . . . . WP . 0034
Nuclear, Biological, Chemical System (NBC) - Theory
of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0035
External Auxiliary Power Unit (EAPU) - Theory of Operation. . . . . . WP . 0036
Missile Countermeasure Device (MCD) - Theory of Operation . . . . WP . 0037
Driver's Hatch Interlock (DHI) - Theory of Operation. . . . . . . . . . . . . WP . 0038
Enhanced Information System Plus (EIS+) - Theory
of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0039

Change 4 ii
 TM 9-2350-264-10-1

TABLE OF CONTENTS - Continued

WP #

Tank Infantry Phone (TIP) - Theory of Operation . . . . . . . . . . . . . . . . WP . 0040

Power Distribution Box (PDB) - Theory of Operation. . . . . . . . . . . . . WP . 0041
Rear View Sensor System (RVSS) (If Equipped) - Theory
of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0042
Counter RCIED Electronic Warfare II (CREW II) System - Theory
of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0042.1
Stabilized Commander's Weapon Station (SCWS) - Theory of
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0042.2

Chapter 2 Operator Instructions: Description and Use of Controls and

Indicators
Description and Use of Controls and Indicators . . . . . . . . . . . . . . . . . WP
. 0043

Chapter 3 Operator Instructions: All Stations

Enter Tank Through Loader's Hatch . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0044

Operate Intercom . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0045
Operate Intercom (C-12357/VRC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0046
Operate Dome Light . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0047
Operate Portable Fire Extinguishers. . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0048
Exit Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0049

Chapter 4 Operator Instructions: Driver's Station

Prepare Station For Operation (Enter Driver's Station) . . . . . . . . . . . WP . 0050

Prepare Station For Operation (Power Up Hull Systems) . . . . . . . . . WP . 0051
Prepare Station For Operation (Check Inflatable Seal) . . . . . . . . . . . WP . 0052
Prepare Station For Operation (Adjust Seat). . . . . . . . . . . . . . . . . . . . WP . 0053
Prepare Station For Operation (Adjust Periscopes) . . . . . . . . . . . . . . WP . 0054
Prepare Station For Operation (Open Hatch) . . . . . . . . . . . . . . . . . . . WP . 0055
Prepare Station For Operation (Adjust Steer-Throttle Control). . . . . WP . 0056
Prepare Station For Operation (Operate Drain Valves) . . . . . . . . . . . WP . 0057
Prepare Station For Operation (Check Percent Day
Power Or Mission Capability Power — Perform Digital
Electronic Control Unit (DECU) Engine Health Check) . . . . . . . . . . . WP . 0058
Operate Rear View Sensor System (RVSS) (If Equipped) . . . . . . . . WP . 0059
Operate Fire Extinguishers (Operate Engine Compartment
Fire Extinguisher-Automatic Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0060
Operate Fire Extinguishers (Operate Engine Compartment
Fire Extinguisher-Manual Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0061
Operate Fire Extinguishers (Operate Crew
Compartment Fire Extinguisher-Automatic Mode) . . . . . . . . . . . . . . . WP . 0062
Operate Fire Extinguishers (Operate Crew Compartment
Fire Extinguisher-Manual Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0063
Transfer Fuel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0064
Start Engine (Start Engine - Normal) . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0065
Start Engine (Start Engine - After Aborted Start) . . . . . . . . . . . . . . . . WP . 0066
Make After-Start Checks (Check
Engine Indicators) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0067
Make After-Start Checks (Check Warning
and Caution Lights) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0068
Make After-Start Checks (Check Pulse
Jet System (PJS) (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0069
Make After-Start Checks (Check Hydraulics) . . . . . . . . . . . . . . . . . . . WP . 0070
Make After-Start Checks (Check Brakes) . . . . . . . . . . . . . . . . . . . . . . WP . 0071

iii Change 4
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TABLE OF CONTENTS - Continued

WP #

Make After-Start Checks (Check

Transmission Downshift) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0072
Operate Periscope Wiper and Washer . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0073
Operate Bilge Pump. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0074
Operate Smoke Generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0075
Operate Personnel Heater - Stewart Warner . . . . . . . . . . . . . . . . . . . WP . 0076
Operate Personnel Heater - Global. . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0077
Drive Tank (Check Master Warning Light) . . . . . . . . . . . . . . . . . . . . . . WP . 0078
Drive Tank (Check Master Caution Light). . . . . . . . . . . . . . . . . . . . . . . WP . 0079
Drive Tank (Operate Driving Controls) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0080
Drive Tank (Move Tank). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0081
Drive Tank (Drive Up and Down Hills). . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0082
Drive Tank (Drive Over Obstacle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0083
Drive Tank (Drive Across Ditch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0084
Drive Tank (Drive At Night) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0085
Shut Down Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0086
Power Down and Secure Station (Power Down Hull Systems) . . . . WP . 0087
Power Down and Secure Station (Close Driver's Hatch) . . . . . . . . . . WP . 0088
Exit Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0089
Driver's Station: Additional References . . . . . . . . . . . . . . . . . . . . . . . . WP . 0090
Prepare Station For Operation) Clear Digital Electronic Control
Unit (DECU) Display/Clear Fault History . . . . . . . . . . . . . . . . . . . . . . . WP . 0090.1

Chapter 5 Operating Instructions: Commander's Station

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0091
Prepare Station For Operation
(Enter Tank Commander's Station) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0092
Prepare Station For Operation
(Operate Commander's Arm Guard). . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0093
Prepare Station For Operation
(Power Up Commander's Station and Turret) . . . . . . . . . . . . . . . . . . . WP . 0094
Prepare Station For Operation (Power Up Turret
and Stabilized Commander's Weapon Station). . . . . . . . . . . . . . . . . . WP . 0094.1
Prepare Station For Operation
(Adjust Commander's Seat) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0095
Prepare Station For Operation
(Operate Commander's Hatch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0096
Prepare Station For Operation (Adjust Commander's Platforms) . . WP . 0097
Prepare Station For Operation (Install Commander's Weapon) . . . . WP . 0098
Prepare Stabilized Commander's Weapon Station
For Operation (Install Commander's Weapon) . . . . . . . . . . . . . . . . . . WP . 0098.1
Prepare Station For Operation
(Adjust Commander's Knee Guard) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0099
Prepare Station For Operation
(Perform Enhanced Position Location Reporting System
(EPLRS) Checkout) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0100
Prepare Station For Operation
(Perform Position Location Reporting System
(PLRS) Checkout) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0101
Operate Enhanced Information System Plus (EIS+) (Start
Up Force XXI Battle Command Brigade and Below (FBCB2)) . . . . . WP . 0102
Operate Digital Computer Set Display Tilt Bracket. . . . . . . . . . . . . . . WP . 0103
Operate EIS+ (Shut Down Force XXI Battle Brigade Command
and Below (FBCB2)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0104
Prepare Station For Operation (Perform Driver's
Hatch Interlock (DHI) Functional Check) . . . . . . . . . . . . . . . . . . . . . . . WP . 0105
Prepare Station For Operation (Override Driver's Hatch
Interlock (DHI)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0106

Change 4 iv
 TM 9-2350-264-10-1

TABLE OF CONTENTS - Continued

WP #

Prepare Station For Operation (Adjust Commander's Gunner's

Primary Sight (GPS) Extension) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0107
Operate Fire Extinguishers (Operate External
Fire Extinguisher T-Handle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0108
Operate Commander's Manual Range Controls . . . . . . . . . . . . . . . . . WP . 0109
Operate Commander's Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0110
Operate Main Gun (Fire Main Gun) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0111
Operate Commander's Weapon Station (CWS) (Operate
In Power Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0112
Operate Stabilized Commander's Weapon Station
(SCWS) (Operate SCWS In Power Mode). . . . . . . . . . . . . . . . . . . . . . WP . 0112.1
Operate Slew To Cue (STC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0112.2
Operate Commander's Weapon Station (CWS) (Operate In
Manual Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0113
Operate Stabilized Commander's Weapon Station
(SCWS) (Operate SCWS In Manual Mode). . . . . . . . . . . . . . . . . . . . . WP . 0113.1
Operate Remote Thermal Sight (RTS) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0114
Operate Commander's Weapon (Load Weapon) . . . . . . . . . . . . . . . . WP . 0115
Operate Commander's Weapon (Fire Commander's Weapon) . . . . WP . 0116
Operate Stabilized Commander's Weapon Station
(SCWS) (Fire Commander's Weapon) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0116.1
Operate Commander's Weapon (Clear Commander's Weapon) . . . WP . 0117
Operate Commander's Weapon (Perform Failure-To-Fire
Procedures). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0118
Operate Commander's Weapon (Prepare Weapon For Travel) . . . . WP . 0119
Operate Commander's Weapon (Prepare Stabilized
Commander's Weapon Station (SCWS) For Travel/Transport). . . . . WP . 0119.1
Operate M250/M257 Grenade Launcher System
(Fire Grenade Dischargers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0120
Operate M250/M257 Grenade Launcher System
(Perform Failure-To-Fire Procedures) . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0121
Power Down and Secure Station (Remove Commander's
Weapon) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP. 0122
Power Down and Secure Station (Remove Commander's Weapon
From Stabilized Commander's Weapon Station (SCWS)). . . . . . . . . WP . 0122.1
Power Down and Secure Station (Secure Commander's
Station and Turret) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0123
Power Down and Secure Station (Secure Stabilized Commander's
Weapon Station (SCWS) and Turret) . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0123.1
Power Down and Secure Station (Power Down Commander's
Station and Turret) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0124
Exit Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0125
Commander's Station: Additional References. . . . . . . . . . . . . . . . . . . WP . 0126

VOLUME 2

Chapter 6 Operator Instructions: Gunner's Station

Prepare Station For Operation (Enter Gunner's Station) . . . . . . . . . . WP . 0127

Prepare Station For Operation (Install Coaxial Machinegun) . . . . . . WP . 0128
Prepare Station For Operation (Adjust Gunner's Seat) . . . . . . . . . . . WP . 0129
Prepare Station For Operation (Adjust Browpads) . . . . . . . . . . . . . . . WP . 0130
Prepare Station For Operation (Position Chest Rest For Firing) . . . WP . 0131
Prepare Station For Operation (Power Up Gunner's Station) . . . . . . WP . 0132
Prepare Station For Operation (Power Up Gunner's Station) -
Marine Corps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0133
Prepare Station For Operation (Perform Gunner's
Primary Sight (GPS) Functional Check). . . . . . . . . . . . . . . . . . . . . . . . WP . 0134

v Change 4
 TM 9-2350-264-10-1

TABLE OF CONTENTS - Continued

WP #

Prepare Station For Operation (Perform Gunner's

Primary Sight (GPS) Adjustments) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0135
Prepare Station For Operation (Perform Computer Data Check) . . WP . 0136
Prepare Station For Operation (Perform Thermal
Imaging System (TIS) Checkout). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0137
Prepare Station For Operation (Perform Forward
Looking Infrared (FLIR) Checkout) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0138
Prepare Station For Operation (Perform Firepower
Enhancement Program Thermal Imaging System
(FEP TIS) Checkout) - Marine Corps . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0139
Prepare Station For Operation (Perform Gunner's
Auxiliary Sight (GAS) Adjustments) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0140
Operate Fire Extinguishers (Operate External Fire
Extinguisher T-handle). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0141
Operate Gunner's Handles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0142
Operate Hydraulic Pump Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0143
Operate Manual Drive Handle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0144
Operate Gun Travel Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0145
Operate Gunner's Primary Sight (GPS) Ballistic Doors. . . . . . . . . . . WP . 0146
Operate Ballistic Computer (Perform Computer Self Test) . . . . . . . . WP . 0147
Operate Ballistic Computer (Operate Computer Control
Panel (CCP)). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0148
Test Fire Control System (Perform Lead System Check) . . . . . . . . . WP . 0149
Test Fire Control System (Perform Firing Circuits Check). . . . . . . . . WP . 0150
Test Fire Control System (Perform Crosswind Sensor Check) . . . . . WP . 0151
Perform Hydraulic Zero Pressure Check . . . . . . . . . . . . . . . . . . . . . . . WP . 0152
Update Muzzle Reference Sensor (MRS) . . . . . . . . . . . . . . . . . . . . . . WP . 0153
Operate Gunner's Primary Sight (GPS) . . . . . . . . . . . . . . . . . . . . . . . . WP . 0154
Operate Thermal Imaging System (TIS) . . . . . . . . . . . . . . . . . . . . . . . WP . 0155
Operate Forward Looking Infrared (FLIR) . . . . . . . . . . . . . . . . . . . . . . WP . 0156
Operate Firepower Enhancement Program
Thermal Imaging System (FEP TIS) - Marine Corps . . . . . . . . . . . . . WP . 0157
Operate Gunner's Auxiliary Sight (GAS) (Use Stadia
Line Ballistic Reticles) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0158
Operate Gunner's Auxiliary Sight (GAS) (Use Stadia Line
Reticle To Estimate Range) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0159
Install Laser Safety Guard (Non-Eyesafe Laser Rangefinder
(ELRF)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0160
Remove Laser Safety Guard (Non-Eyesafe Laser Rangefinder
(ELRF)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0161
Operate Laser Rangefinder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0162
Operate Main Gun (Fire Main Gun) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0163
Operate Main Gun (Perform Failure-To-Fire) . . . . . . . . . . . . . . . . . . . WP . 0164
Prepare Weapon For Travel (Prepare Main Gun) . . . . . . . . . . . . . . . . WP . 0165
Operate Coaxial Machinegun (Fire Coaxial Machinegun). . . . . . . . . WP . 0166
Operate Coaxial Machinegun (Perform Procedure
For Runaway Firing). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0167
Operate Coaxial Machinegun (Clear Coaxial Machinegun) . . . . . . . WP . 0168
Operate Coaxial Machinegun (Perform Failure-To-Fire) . . . . . . . . . . WP . 0169
Operate Coaxial Machinegun (Zero Coaxial Machinegun) . . . . . . . . WP . 0170
Operate Coaxial Machinegun (Adjust Coaxial
Trigger Operating Lever) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0171
Operate Coaxial Machinegun (Change Coaxial
Machinegun Barrel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0172
Operate Coaxial Machinegun (Empty Spent Ammunition Box/Bag) WP . 0173
Power Down And Secure Station (Remove Coaxial Machinegun). . WP . 0174
Power Down And Secure Station (Power Down Gunner's Station) . WP . 0175
Power Down And Secure Station (Power Down
Gunner's Station) - Marine Corps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0176
Exit Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0177

Change 4 vi
 TM 9-2350-264-10-1

TABLE OF CONTENTS - Continued

WP #

Gunner's Station: Additional References . . . . . . . . . . . . . . . . . . . . . . . WP

. 0178

Chapter 7 Operator Instructions: Loader's Station

Prepare Station For Operation (Open Loader's Hatch) . . . . . . . . . . . WP . 0179

Prepare Station For Operation (Erect Crosswind Sensor). . . . . . . . . WP . 0180
Prepare Station For Operation (Install Or Stow Gun Cradle
Control Handles). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0180.1
Prepare Station For Operation (Install M240/M240B Machinegun) . WP . 0181
Prepare Station For Operation (Enter Loader's Station) . . . . . . . . . . WP . 0182
Prepare Station For Operation (Power Up Loader's Station) . . . . . . WP . 0183
Prepare Station For Operation (Operate Intercom C-12357/VRC) . WP . 0184
Prepare Station For Operation (Operate Intercom) . . . . . . . . . . . . . . WP . 0185
Prepare Station For Operation (Adjust Loader's Seat) . . . . . . . . . . . WP . 0186
Prepare Station For Operation (Operate Loader's Hatch From
Inside Tank) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0187
Prepare Station For Operation (Install Night Vision Viewer In
Loader's Hatch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0188
Prepare Station For Operation (Position Loader's Guards And
Safety Guard Frame For Firing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0189
Operate Fire Extinguishers (Operate External Fire Extinguisher
T-Handle) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0190
Operate Loader's Periscope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0191
Operate Loader's Panel. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0192
Operate Turret Lock (Unlock Turret Lock) . . . . . . . . . . . . . . . . . . . . . . WP . 0193
Operate Turret Lock (Lock Turret Lock) . . . . . . . . . . . . . . . . . . . . . . . . WP . 0194
Operate Ready Ammunition Door (Operate Automatically) . . . . . . . WP . 0195
Operate Ready Ammunition Door (Operate Manually) . . . . . . . . . . . WP . 0196
Operate Stowage Ammunition Door (Open Door) . . . . . . . . . . . . . . . WP . 0197
Operate Stowage Ammunition Door (Close Door) . . . . . . . . . . . . . . . WP . 0198
Operate Hull Ammunition Doors (Open Door). . . . . . . . . . . . . . . . . . . WP . 0199
Operate Hull Ammunition Doors (Close Door) . . . . . . . . . . . . . . . . . . WP . 0200
Operate Main Gun Ammunition Stowage Racks (Stow 120 mm
Ammunition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0201
Operate Main Gun Ammunition Stowage Racks (Remove
120 mm Ammunition). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0202
Operate Main Gun 16-Round Ammunition Stowage Racks (Stow
120 mm Ammunition). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0203
Operate Main Gun 16-Round Ammunition Stowage Racks
(Remove 120 mm Ammunition) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0204
Operate Main Gun Breechblock (Open Breechblock Manually). . . . WP . 0205
Operate Main Gun Breechblock (Close Breechblock Manually) . . . WP . 0206
Service Main Gun (Bleed Gun Mount/Check Replenisher). . . . . . . . WP . 0207
Service Main Gun (Load Main Gun) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0208
Service Main Gun (Clear Main Gun). . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0209
Service Main Gun (Unload Stuck Round) . . . . . . . . . . . . . . . . . . . . . . WP . 0210
Service Main Gun (Unload Stuck Stub Base) . . . . . . . . . . . . . . . . . . . WP . 0211
Service Coaxial Machinegun (Load Coaxial Machinegun) . . . . . . . . WP . 0212
Service Coaxial Machinegun (Unload Coaxial Machinegun) . . . . . . WP . 0213
Operate Loader's Machinegun (Load Loader's Machinegun). . . . . . WP . 0214
Operate Loader's Machinegun (Fire Loader's Machinegun). . . . . . . WP . 0215
Operate Loader's Machinegun (Perform Procedure For Runaway
Firing) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0216
Operate Loader's Machinegun (Clear Loader's Machinegun) . . . . . WP . 0217
Operate Loader's Machinegun (Perform Failure-To-Fire) . . . . . . . . . WP . 0218
Operate Loader's Machinegun (Change Barrel) . . . . . . . . . . . . . . . . . WP . 0219
Operate Loader's Machinegun (Empty Ejected Link Case) . . . . . . . WP . 0220
Operate Loader's Machinegun (Prepare Weapon For Travel) . . . . . WP . 0221

vii Change 4
 TM 9-2350-264-10-1

TABLE OF CONTENTS - Continued

WP #

Service M250/M257 Grenade Launcher System (Load Grenade

Dischargers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0222
Service M250/M257 Grenade Launcher System (Unload
Grenade Dischargers) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0223
Service M250/M257 Grenade Launcher System (Prepare
Dischargers For Travel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0224
Check Turret Networks Box (TNB) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0225
Check Redesigned Turret Networks Box (RTNB) (If Equipped). . . . WP . 0226
Check Wireless Embedded Diagnostics (WED) System (If
Equipped) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0227
Operate Night Vision Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0228
Power Down And Secure Station (Stow Loader's Guards And
Safety Guard Frame) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0229
Power Down And Secure Station (Remove Night Vision Viewer
From Loader's Hatch) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0230
Power Down And Secure Station (Power Down Loader's Station) . WP . 0231
Power Down And Secure Station (Remove Loader's Machinegun). WP . 0232
Power Down And Secure Station (Stow Loader's Armored Gun
Shield (LAGS)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0232.1
Power Down And Secure Station (Stow Crosswind Sensor) . . . . . . WP . 0233
Power Down And Secure Station (Close And
Lock Loader's Hatch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0234
Loader's Station: Additional References . . . . . . . . . . . . . . . . . . . . . . . WP . 0235

Chapter 8 Operator Instructions: Auxiliary Equipment

Operate Communications System (Operate Amplifier, AM 1780/

VRC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0236
Operate Communications System (Connect CVC Helmet
To Intercom Control Box C-10456/VRC). . . . . . . . . . . . . . . . . . . . . . . . WP . 0237
Operate Communications System (Disconnect CVC Helmet
From Intercom Control Box C-10456/VRC) . . . . . . . . . . . . . . . . . . . . . WP . 0238
Operate Communications System (Operate Intercom Control
BoxC-10456/VRC With Remote Cable) . . . . . . . . . . . . . . . . . . . . . . . . WP . 0239
Operate Communications System (Operate Intercom Control
BoxC-10456/VRC Without Remote Cable) . . . . . . . . . . . . . . . . . . . . . WP . 0240
Operate Communications System (Operate Indicator Control,
CD-82/VRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0241
Operate Communications System (Connect CVC Helmet To
Intercommunication Control Set C-12357/VRC) . . . . . . . . . . . . . . . . . WP . 0242
Operate Communications System (Disconnect CVC Helmet
From Intercommunication Control Set C-12357/VRC) . . . . . . . . . . . . WP . 0243
Operate Communications System (Operate Intercommunication
Control Set C-12357/VRC With Remote Cable) . . . . . . . . . . . . . . . . . WP . 0244
Operate Communications System (Operate Intercommunication
Control Set C-12357/VRC Without Remote Cable) . . . . . . . . . . . . . . WP . 0245
Operate Communications System (Operate Loudspeaker
LS-688/VRC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0246
Operate Communications System (Operate Frequency
Control Monitor C-11291/VRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0247
Operate Communications System (Operate Frequency
Selector Control C-2742/VRC). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0248
Operate Communications System (Operate
Receiver-Transmitter, RT-246/VRC). . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0249
Operate Communications System (Operate Auxiliary
Receiver, R-442/VRC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0250
Operate Communications System (Operate Two
Receiver-Transmitters RT-1439/VRC Connected As AN/VRC-89
Or AN/VRC-92 Radio Set) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0251

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Operate Communications System (Operate Two

Receiver-Transmitters RT-1523E/VRC Connected As AN/VRC-89F
Or AN/VRC-92F Radio Set) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0252
Operate Communications System (Operate Receiver-Transmitter
RT-1720/G Connected As AN/VSQ-2A (V) Radio Set) . . . . . . . . . . . WP . 0253
Operate Satellite Signals Navigation Set AN/PSN-11 (Operate
Precision Lightweight GPS Receiver (PLGR)). . . . . . . . . . . . . . . . . . . WP . 0254
Operate Satellite Signals Navigation Set AN/PSN-13 (Operate
Defense Advanced GPS Receiver (DAGR)) . . . . . . . . . . . . . . . . . . . . WP . 0255
Operate Communications System (Install Antennas Used With
AN/VRC-89F Or AN/VRC-92F) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0256
Operate Communications System (Operate Radio
Set AN/VRC-64) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0257
Operate Communications System (Install Antennas Used
With AN/VRC-64, AN/VRC-89, Or AN/VRC-92) . . . . . . . . . . . . . . . . . WP . 0258
Operate Communications System (Remove Antennas Used
With AN/VRC-64, AN/VRC-89, Or AN/VRC-92) . . . . . . . . . . . . . . . . . WP . 0259
Operate Communications System (Tie Down Antennas Used
With AN/VRC-64, AN/VRC-89, Or AN/VRC-92) . . . . . . . . . . . . . . . . . WP . 0260
Operate Communications System (Remove Antennas Used
With AN/VRC-89F Or AN/VRC-92F). . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0261
Operate Communications System (Tie Down Antennas Used
With AN/VRC-89F Or AN/VRC-92F). . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0262
Start External Auxiliary Power Unit (EAPU)
(Perform a Normal Electrical Start From Local Control Panel) . . . . . WP . 0263
Deleted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0264
Start External Auxiliary Power Unit (EAPU)
(Perform a Manual Start) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0265
Start External Auxiliary Power Unit (EAPU)
(Slave Start EAPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0266
Start External Auxiliary Power Unit (EAPU)
(Perform Normal Electrical Start From Remote Control Panel) . . . . WP . 0267
Deleted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0268
Shut Down External Auxiliary Power Unit (EAPU) (From Local
Control Panel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0269
Shut Down External Auxiliary Power Unit (EAPU) (From Remote
Control Panel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0270
Perform External Auxiliary Power Unit (EAPU) Engine And Power
Output Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0271
Operate External Auxiliary Power Unit (EAPU)
(Operate 12 Volt Outlet) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0271.1
Deleted . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0272
Operate Missile Countermeasure Device (MCD) (Turn MCD On) . . WP . 0273
Operate Missile Countermeasure Device (MCD) (Turn MCD Off) . . WP . 0274
Operate Nuclear, Biological, Chemical (NBC) Main System . . . . . . . WP . 0275
Operate Nuclear, Biological, Chemical (NBC) Backup System
(Fresh Air) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0276
Operate Heater, Water Ration (HWR). . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0277
Bustle Rack Extension (Extend Bustle Rack Extension) . . . . . . . . . . WP . 0278
Bustle Rack Extension (Stow Bustle Rack Extension). . . . . . . . . . . . WP . 0279
Nuclear, Biological, Chemical (NBC) Backup Filter
Change Criteria. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0280
Operate Counter RCIED Electronic Warfare II
(CREW II) System (Prepare CREW II System for Operation) . . . . . WP . 0280.1
Auxiliary Equipment: Additional References . . . . . . . . . . . . . . . . . . . . WP . 0281

Chapter 9 Operator Instructions: Operation Under Unusual Conditions

General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0282

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Operate Tank In Extreme Cold (0°F, -18°C

To -65°F, -54°C) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0283
Operate Tank In Extreme Cold (Start Engine). . . . . . . . . . . . . . . . . . . WP . 0284
Operate Tank In Extreme Cold (Make
After-Start Checks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0285
Operate Tank In Extreme Cold (Drive Tank) . . . . . . . . . . . . . . . . . . . . WP . 0286
Operate Stabilized Commander's Weapon Station (SCWS)
In Extreme Cold (Warm Up SCWS) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0286.1
Operate External Auxiliary Power Unit (EAPU)
In Extreme Cold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0287
Operate External Auxiliary Power Unit (EAPU)
In Extreme Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0288
Operate External Auxiliary Power Unit (EAPU)
In Extreme Dust,
Sand, Mud, Rain, Or Other Extreme Conditions . . . . . . . . . . . . . . . . . WP . 0289
Operate Tank In Icy Conditions (Install Ice Cleats). . . . . . . . . . . . . . . WP . 0290
Operate Tank In Icy Conditions (Remove Ice Cleats) . . . . . . . . . . . . WP . 0291
Operate Tank In Extreme Cold (Operate Main Gun) . . . . . . . . . . . . . WP . 0292
Operate Tank In Desert Environment . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0293
Operate Tank In Extreme Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0294
Operate Tank In Extreme Heat (Operate Engine). . . . . . . . . . . . . . . . WP . 0295
Operate Tank In Extreme Heat (Maintain Batteries). . . . . . . . . . . . . . WP . 0296
Operate Tank In Extreme Dust, Sand, Or Mud (Maintain Optics) . . WP . 0297
Operate Tank In Extreme Dust, Sand, Or Mud (Drive Tank) . . . . . . . WP . 0298
Operate Tank In Extreme Dust, Sand, Or Mud (Maintain
Turret Ready And Stowage Ammunition Doors) . . . . . . . . . . . . . . . . . WP . 0299
Operate Tank In Extreme Dust, Sand, Or Mud
(Maintain Weapons). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0300
Operate Tank In Extreme Rain/Wind . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0301
Slave Start Tank (Prepare Tanks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0302
Slave Start Tank (Start Dead Tank). . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0303
Tow Disabled Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0304
Tow Disabled Tank (Install/Remove Exhaust Deflector). . . . . . . . . . . WP . 0305
Tow Disabled Tank (Disconnect Final Drives) . . . . . . . . . . . . . . . . . . . WP . 0306
Tow Disabled Tank (Connect Tow Bar) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0307
Tow Disabled Tank (Tow Tank With Tow Bar) . . . . . . . . . . . . . . . . . . . WP . 0308
Tow Disabled Tank (Disconnect Tow Bar) . . . . . . . . . . . . . . . . . . . . . . WP . 0309
Tow Disabled Tank (Connect Tow Cables). . . . . . . . . . . . . . . . . . . . . . WP . 0310
Tow Disabled Tank (Tow Tank With Tow Cables) . . . . . . . . . . . . . . . . WP . 0311
Tow Disabled Tank (Disconnect Tow Cables) . . . . . . . . . . . . . . . . . . . WP . 0312
Retrieve Mired Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0313
Ford Water Obstacle (Ford Shallow Water) . . . . . . . . . . . . . . . . . . . . . WP . 0314
Ford Water Obstacle (Ford Deep Water) . . . . . . . . . . . . . . . . . . . . . . . WP . 0315
Operate Power Distribution Box (PDB) - Reset Circuit Breakers . . . WP . 0316
Operate Tank Infantry Phone (TIP) In Unusual Weather
Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0317
Tank Infantry Phone (TIP) In Nuclear, Biological, And
Chemical (NBC) Decontamination Procedures. . . . . . . . . . . . . . . . . . WP . 0318
Perform Silent Watch Duty Cycle With External
Auxiliary Power Unit (EAPU) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0319
Perform Silent Watch Duty Cycle. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0320
Prepare Commander's Station For Alternate
Weapon (Install M240 Machinegun) . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0321
Prepare Stabilized Commander's Weapon Station (SCWS)
for Alternate Weapon (Install M240 Machinegun) . . . . . . . . . . . . . . . WP . 0321.1
Operate Commander's Station With Alternate Weapon
(Load M240 Machinegun). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0322
Operate Commander's Station With Alternate Weapon
(Fire M240 Machinegun) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0323

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WP #

Operate Stabilized Commander's Weapon Station (SCWS)

With Alternate Weapon (Fire M240 Machinegun). . . . . . . . . . . . . . . . WP . 0323.1
Power Down And Secure Station (Remove Alternate Weapon) . . . . WP . 0324
Service Air Filter Element (Use Cleaning Wand) . . . . . . . . . . . . . . . . WP
. 0325
Operate Ready Ammunition Door (No Power) . . . . . . . . . . . . . . . . . . WP. 0326

Chapter 10 Emergency Procedures

Service Air Cleaner . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0327

Do Immediate Action For Loss Of Engine Power . . . . . . . . . . . . . . . . WP . 0328
Do Immediate Action For Loss Of Steering . . . . . . . . . . . . . . . . . . . . . WP . 0329
Do Immediate Action For Loss Of Service Brakes . . . . . . . . . . . . . . . WP . 0330
Remove Injured Crewmember From Tank (Remove Injured
Driver Through Driver's Hatch). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0331
Remove Injured Crewmember From Tank (Remove Injured
Crewmember Through Loader's Hatch) . . . . . . . . . . . . . . . . . . . . . . . . WP . 0332
Unlock Stuck Parking Brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0333
Open 120 mm Breechblock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0334
Close 120 mm Breechblock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0335
Do Immediate Action For Engine Failure To Shut Down . . . . . . . . . . WP . 0336
Do Immediate Action For Starter Failure To Disengage . . . . . . . . . . WP . 0337
Bypass Primary Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0338
Do Immediate Action For Vehicle Master Power Failure
To Power Down. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0339
Decontaminate Tank . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0340
Verify Operational Readiness Of Fire Control System
Following A Nuclear Explosion. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0341
Disconnect Fuel Quick-Disconnect Coupling . . . . . . . . . . . . . . . . . . . WP . 0342
Armor Damage Immediate Action . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0343
Use Battle Override . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0344
Emergency Crew Evacuation Procedures . . . . . . . . . . . . . . . . . . . . . . WP . 0345
Rollover (Side) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0346
Rollover (Top) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0347
Fire Evacuation Procedure For Vehicle Fire . . . . . . . . . . . . . . . . . . . . WP . 0348
Do Immediate Action For External Auxiliary Power Unit (EAPU)
(Engine Failure To Shut Down) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0348.1
Perform Inspection Of Gun Tube and Fire Control Components
Due To A Gun Tube Strike . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0348.2

Chapter 11 Stowage And Decal/Data Plate Guide

Stowage and Decal/Data Plate Guide . . . . . . . . . . . . . . . . . . . . . . . . . WP

. 0349

Chapter 12 Troubleshooting Procedures

Troubleshooting Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0350
Operator Maintenance Troubleshooting Index. . . . . . . . . . . . . . . . . . . WP . 0351
Driver's Warning and Caution Lights Troubleshooting Procedure . . WP . 0352
Commander's Warning Lights Troubleshooting Procedure . . . . . . . . WP . 0353
Driver's Indicator Lights Troubleshooting Procedure . . . . . . . . . . . . . WP . 0354
Commander's Indicator Lights Troubleshooting Procedure. . . . . . . . WP . 0355
Gunner's Indicator Lights Troubleshooting Procedure . . . . . . . . . . . . WP . 0356
Loader's Indicator Lights Troubleshooting Procedure . . . . . . . . . . . . WP . 0357
Driver's Gages and Meters Troubleshooting Procedure . . . . . . . . . . WP . 0358
Gunner's Gage Troubleshooting Procedure. . . . . . . . . . . . . . . . . . . . . WP . 0359
Engine Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0360

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Transmission Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . WP . 0361

Brakes Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0362
Driving Lights and Dome Lights Troubleshooting Procedure . . . . . . WP . 0363
Tank Electrical Power Troubleshooting Procedure . . . . . . . . . . . . . . . WP . 0364
Fire Control Troubleshooting Procedure. . . . . . . . . . . . . . . . . . . . . . . . WP . 0365
Main Gun Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0366
Machineguns Troubleshooting Procedure . . . . . . . . . . . . . . . . . . . . . . WP . 0367
Fixed Fire Extinguisher System Troubleshooting Procedure . . . . . . WP . 0368
Ammunition Compartments Troubleshooting Procedure. . . . . . . . . . WP . 0369
Auxiliary Systems Troubleshooting Procedure . . . . . . . . . . . . . . . . . . WP . 0370
External Auxiliary Power Unit (EAPU) Troubleshooting
Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0371
Enhanced Information System Troubleshooting Procedure . . . . . . . WP . 0372
Stabilized Commander's Weapon Station (SCWS)
Troubleshooting Procedures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0372.1

VOLUME 3

Chapter 13 Preventive Maintenance Checks And Services (PMCS)

General Instructions For Preventive Maintenance Checks And

Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0373
Table 1. Preventive Maintenance Checks And
Services (PMCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0374

Chapter 14 Maintenance Instructions

Replace Lamp (Replace Panel Lamp) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0375

Replace Lamp (Replace Gage Lamp) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0376
Replace Lamp (Replace Computer Control Panel Lamp) . . . . . . . . . WP . 0377
Replace Lamp (Replace Front Blackout Marker Lamp) . . . . . . . . . . . WP . 0378
Replace Lamp (Replace Headlight Lamp) . . . . . . . . . . . . . . . . . . . . . . WP . 0379
Replace Lamp (Replace Taillight Lamp). . . . . . . . . . . . . . . . . . . . . . . . WP . 0380
Replace Lamp (Replace Dome Light Lamp) . . . . . . . . . . . . . . . . . . . . WP . 0381
Maintain Periscopes (Service Driver's Periscope Washer Fluid
Reservoir) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP. 0382
Maintain Periscopes (Replace Driver's Or Loader's Periscope) . . . . WP . 0383
Maintain Periscopes (Replace Driver's Quick Release Retainers). . WP . 0384
Maintain Periscopes (Clean Windows And Mirrors) . . . . . . . . . . . . . . WP . 0385
Maintain Periscopes (Clean Sight Lenses) . . . . . . . . . . . . . . . . . . . . . WP . 0386
Maintain Driver's Video Display (DVD) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0387
Maintain Night Vision Viewer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0388
Maintain Driver's Vision Enhancer (DVE) . . . . . . . . . . . . . . . . . . . . . . . WP . 0389
Maintain Taillight Camera Assembly (TCA) . . . . . . . . . . . . . . . . . . . . . WP . 0390
Maintain Fire Sensor Lenses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0391
Maintain Muzzle Reference Sensor (MRS) . . . . . . . . . . . . . . . . . . . . . WP . 0392
Maintain Precleaner (Traverse Turret To Service Precleaner) . . . . . WP . 0393
Maintain Precleaner (Clean Sponson Air Intake Grilles) . . . . . . . . . . WP . 0394
Maintain Precleaner (Open Grille Doors And Covers) . . . . . . . . . . . . WP . 0395
Maintain Precleaner (Service Air Induction System) . . . . . . . . . . . . . WP . 0396
Maintain Precleaner (Service Precleaner) . . . . . . . . . . . . . . . . . . . . . . WP . 0397
Maintain Precleaner (Close Grille Doors And Covers). . . . . . . . . . . . WP . 0398
Maintain External Auxiliary Power Unit (EAPU)
(Open Access Door Assemblies) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0399
Maintain External Auxiliary Power Unit (EAPU)
(Close Access Door Assemblies) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0400
Deleted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0401

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TABLE OF CONTENTS - Continued

WP #

Maintain External Auxiliary Power Unit (EAPU)

(Drain Water From Fuel/Water Separator) . . . . . . . . . . . . . . . . . . . . . . WP . 0402
Maintain External Auxiliary Power Unit (EAPU) (Fuel EAPU). . . . . . WP . 0403
Maintain External Auxiliary Power Unit (EAPU)
(Service Air Filter) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0404
Deleted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0405
Fuel Tank (Traverse Turret To Fill Front Fuel Tanks). . . . . . . . . . . . . . WP . 0406
Fuel Tank (Add Fuel) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0407
Maintain Hydraulics (Remove Engine Access Cover) . . . . . . . . . . . . WP . 0408
Maintain Hydraulics (Inspect Engine Hydraulics) . . . . . . . . . . . . . . . . WP . 0409
Maintain Hydraulics (Install Engine Access Cover) . . . . . . . . . . . . . . WP . 0410
Maintain Hydraulics (Open Top Deck Right Grille Doors) . . . . . . . . . WP . 0411
Maintain Hydraulics (Inspect Heat Exchanger) . . . . . . . . . . . . . . . . . . WP . 0412
Maintain Hydraulics (Close Top Deck Right Grille Doors) . . . . . . . . . WP . 0413
Maintain Hydraulics (Inspect Hull Hydraulics) . . . . . . . . . . . . . . . . . . . WP . 0414
Maintain Hydraulics (Power Charge Manual Elevation
Accumulator). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0415
Maintain Hydraulics (Manually Charge Manual Elevation
Accumulator). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0416
Maintain Hydraulics (Bleed Air From Traverse Hydraulics) . . . . . . . . WP . 0417
Maintain Batteries (Open Battery Covers) . . . . . . . . . . . . . . . . . . . . . . WP . 0418
Maintain Batteries (Service Batteries) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0419
Maintain Batteries (Charge Batteries). . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0420
Maintain Batteries (Operate Negative Emergency Disconnect
Link) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0421
Maintain Batteries (Close Battery Covers). . . . . . . . . . . . . . . . . . . . . . WP . 0422
Maintain Track (Open Skirt Number One) . . . . . . . . . . . . . . . . . . . . . . WP . 0423
Maintain Track (Open Skirt Number Two, Three, Four, Or Five). . . . WP . 0424
Maintain Track (Open Skirt Number Six) . . . . . . . . . . . . . . . . . . . . . . . WP . 0425
Maintain Track (Close Skirt Number One) . . . . . . . . . . . . . . . . . . . . . . WP . 0426
Maintain Track (Close Skirt Number Two, Three, Four, Or Five) . . . WP . 0427
Maintain Track (Close Skirt Number Six) . . . . . . . . . . . . . . . . . . . . . . . WP . 0428
Maintain Track (Open Side Mudguard) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0429
Maintain Track (Close Side Mudguard) . . . . . . . . . . . . . . . . . . . . . . . . WP . 0430
Maintain Track (Remove Right Rear Mudguard) . . . . . . . . . . . . . . . . . WP . 0431
Maintain Track (Remove Left Rear Mudguard) . . . . . . . . . . . . . . . . . . WP . 0432
Maintain Track (Install Right Rear Mudguard) . . . . . . . . . . . . . . . . . . . WP . 0433
Maintain Track (Install Left Rear Mudguard) . . . . . . . . . . . . . . . . . . . . WP . 0434
Maintain Track (Open Front Fender) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0435
Maintain Track (Close Front Fender) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0436
Maintain Track (Replace Solid Rubber Roadwheel) . . . . . . . . . . . . . . WP . 0437
Maintain Track (Replace Solid Rubber Idler Wheel). . . . . . . . . . . . . . WP . 0438
Maintain Track (Tighten Hub Cap). . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0438.1
Maintain Track (Release Track Tension). . . . . . . . . . . . . . . . . . . . . . . . WP . 0439
Maintain Track (Adjust Track Tension) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0440
Maintain Track (Replace Adjusting Link Grease Fitting) . . . . . . . . . . WP . 0441
Maintain Track (Prepare Electric Impact Wrench For Operation) . . . WP . 0442
Maintain Track (Remove Centerguide) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0443
Maintain Track (Install Centerguide) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0444
Maintain Track (Remove End Connector). . . . . . . . . . . . . . . . . . . . . . . WP . 0445
Maintain Track (Install End Connector). . . . . . . . . . . . . . . . . . . . . . . . . WP . 0446
Maintain Track (Disconnect Track) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0447
Maintain Track (Remove Track Shoe) . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0448
Maintain Track (Replace Track Shoe Pad) . . . . . . . . . . . . . . . . . . . . . . WP . 0449
Maintain Track (Install Track Shoe) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0450
Maintain Track (Connect Track) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0451
Maintain Track (Install Thrown Track) . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0452
Maintain Track (Replace Track Assembly) . . . . . . . . . . . . . . . . . . . . . . WP . 0453
Maintain Track (T-158 Track Reversal) . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0454
Maintain 120 mm Main Gun (Service Bore Evacuator) . . . . . . . . . . . WP . 0455

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TABLE OF CONTENTS - Continued

WP #

Maintain 120 mm Main Gun (Service Main Gun Tube) . . . . . . . . . . . WP . 0456

Maintain 120 mm Main Gun (Service Stub Base Deflector) . . . . . . . WP . 0457
Maintain 120 mm Main Gun (Service Breechblock) . . . . . . . . . . . . . . WP . 0458
Maintain 120 mm Main Gun (Service Replenisher) . . . . . . . . . . . . . . WP . 0459
Maintain 120 mm Main Gun (Adjust Operating Cam) . . . . . . . . . . . . WP . 0460
Replace Spent Ammunition Bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0460.1
Service Crosswind Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0461
Release Stuck Engine Compartment Drain Valves . . . . . . . . . . . . . . WP . 0462
Clean Crew Compartment Drain Valve. . . . . . . . . . . . . . . . . . . . . . . . . WP . 0463
Maintain Powerpack (Level Tank For Powerpack Removal) . . . . . . . WP . 0464
Maintain Powerpack (Check Disconnect Panel) . . . . . . . . . . . . . . . . . WP . 0465
Check Electronic Control Unit (ECU) Or Digital Electronic Control
Unit (DECU) Shorting Cap And Cable Connectors . . . . . . . . . . . . . . WP . 0466
Open Rear Grille Doors. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0467
Close Rear Grille Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0468
Adjust Nuclear, Biological, Chemical (NBC) Crew Compartment
Pressurization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0469
Use Personnel Heater Plug Assemblies (If Equipped) . . . . . . . . . . . WP . 0470
Service Air Inlet Cap (If Equipped) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0471
Personnel Heater (Purge Heater - Global Heater Only) . . . . . . . . . . WP . 0472
Perform Manual Key Test On Redesigned Hull Networks
Box (RHNB) And Redesigned Turret Networks Box (RTNB) . . . . . . WP . 0473
Operate Main Gun Ammunition Stowage Racks
(Remove Stuck Round) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0474
Maintain Loader's Armored Gun Shield (LAGS) (Remove/Install
Ballistic Glass) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0474.1

Chapter 15 Auxiliary Equipment Maintenance Instructions

Auxiliary Equipment Maintenance Instructions . . . . . . . . . . . . . . . . . . WP

. 0475

Chapter 16 Ammunition

120 mm Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0476

Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0477
Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0478
Ammunition Markings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0479
Foreign Ammunition (NATO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0480
Care And Handling. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0481
To Upload. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0482
Authorized Rounds. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0483
Preparation For Firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0484
Precautions In Firing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0485
Projectile Alinement Accept/Reject Criteria For M1028 . . . . . . . . . . . WP . 0486
Caliber .50 Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0487
7.62 mm Ammunition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0488
5.56 mm Ammunition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0489
Screening Smoke Grenades . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0490
Stowage: 120 mm Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0491
Stowage: Caliber .50 Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0492
Stowage: 7.62 mm Ammunition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0493
Stowage: 5.56 mm Ammunition And Grenades . . . . . . . . . . . . . . . . . WP . 0494
120 mm Ammunition Hearing Protection Criteria . . . . . . . . . . . . . . . . WP . 0495
Unpack 120 mm Ammunition From Metal Containers . . . . . . . . . . . . WP . 0496
Packing 120 mm Ammunition Into Metal Containers . . . . . . . . . . . . . WP . 0497

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WP #

Chapter 17 Supporting Information

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0498
Components of End Item (COEI) and Basic Issue Items (BII) . . . . . WP . 0499
Additional Authorization List (AAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0500
Expendable and Durable Items List . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0501
Gunnery Checks And Procedures - General . . . . . . . . . . . . . . . . . . . . WP . 0502
Perform Armament Accuracy Check (AAC) - Check 1
(Main Gun Mount Checks) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0503
Perform Armament Accuracy Check (AAC) - Check 2
(Elevation Cylinder Check) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0504
Perform Armament Accuracy Check (AAC) - Check 3
(Prepare Solution Board For Use) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0505
Perform Armament Accuracy Check (AAC) - Check 4
(Special Input). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0506
Perform Armament Accuracy Check (AAC) - Check 5
(Ballistic Solution). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0507
Perform Armament Accuracy Check (AAC) - Check 6
(Muzzle Reference System) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0508
Perform Armament Accuracy Checks (AAC) - Tables . . . . . . . . . . . . WP . 0508.1
Perform Screening Test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0509
Boresight Remote Thermal Sight (RTS) To
Commander's Weapon - Primary Method . . . . . . . . . . . . . . . . . . . . . . WP . 0510
Boresight Remote Thermal Sight (RTS) (.50 Cal
Thermal Sight/Day TV System) To Commander's Weapon -
Primary Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0511
Boresight Remote Thermal Sight (RTS) To
Commander's Weapon - Alternate Method . . . . . . . . . . . . . . . . . . . . . WP . 0512
Boresight Remote Thermal Sight (RTS) (.50 Cal
Thermal Sight/Day TV System) To Commander's Weapon -
Alternate Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0513
Boresight Remote Thermal Sight (RTS) To
Commander's Weapon - Alternate Method/M240 Machinegun . . . . WP . 0513.1
Boresight Remote Thermal Sight (RTS) on
Stabilized Commander's Weapon Station (SCWS) To
Commander's Weapon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0513.2
Boresight Remote Thermal Sight (RTS) on
Stabilized Commander's Weapon Station (SCWS) To
Commander's Alternate Weapon (M240 Machinegun) . . . . . . . . . . . WP . 0513.3
Boresight Tank: Prepare To Boresight . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0514
Boresight Tank: Boresight Main Gun . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0515
Boresight Tank: Boresight Gunner's Primary Sight (GPS) . . . . . . . . WP . 0516
Boresight Tank: Boresight Gunner's Auxiliary Sight (GAS) . . . . . . . . WP . 0517
Boresight Tank: Boresight Thermal Imaging System (TIS) . . . . . . . . WP . 0518
Boresight Tank: Boresight Forward Looking Infrared (FLIR) . . . . . . . WP . 0519
Boresight Tank: Boresight Firepower Enhancement Program
Thermal Imaging System (FEP TIS) . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0520
Boresight Tank: Boresight Muzzle Reference Sensor (MRS) . . . . . . WP . 0521
Boresight Tank: Calibrate GAS For Heat And Sabot . . . . . . . . . . . . . WP . 0522
Boresight Tank: Perform Boresight Check . . . . . . . . . . . . . . . . . . . . . . WP . 0523
Perform Slew To Cue (STC) Operation Checkout . . . . . . . . . . . . . . . WP . 0523.1
Perform Slew To Cue (STC) Alinement . . . . . . . . . . . . . . . . . . . . . . . . WP . 0523.2
Zero Commander's Weapon. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0524
Zero Remote Thermal Sight (RTS)
(.50 Cal Thermal Sight/Day TV System) . . . . . . . . . . . . . . . . . . . . . . . WP . 0525
Zero Remote Thermal Sight (RTS) (.50 Cal
Thermal Sight/Day TV System) Zero Commander's Alternate
Weapon (M240 Machinegun) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0525.1

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WP #

Deleted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0526
Zero Remote Thermal Sight (RTS) (.50 Cal Thermal Sight/Day TV
System) On Stabilized Commander's Weapon Station (SCWS) To
Commander's Weapon . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0526.1
Zero Remote Thermal Sight (RTS) (.50 Cal Thermal Sight/Day TV
System) On Stabilized Commander's Weapon Station (SCWS) To
Commander's Alternate Weapon (M240). . . . . . . . . . . . . . . . . . . . . . . WP . 0526.2
Prepare Stabilized Commander's Weapon Station (SCWS) For
Operation (Perform Weapon Station Inhibit Functional Check) . . . . WP . 0526.3
Zero Main Gun (Prepare To Zero) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0527
Zero Main Gun (Fire For Zero) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0528
Zero Main Gun (Fire For Confirmation) . . . . . . . . . . . . . . . . . . . . . . . . WP . 0529
Zero Main Gun (Aline Thermal Imaging System (TIS)) . . . . . . . . . . . WP . 0530
Zero Main Gun (Aline Firepower Enhancement Program Thermal
Imaging System (FEP TIS)) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0531
Zero Main Gun (Zero Gunner's Auxiliary Sight (GAS)) . . . . . . . . . . . WP . 0532
Verify Zero . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0533
Boresight Main Gun - Alternate Method . . . . . . . . . . . . . . . . . . . . . . . . WP . 0534
Deleted. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP
. 0535
Perform Super Elevation Check. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0536
Perform Cant Unit Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0537
M1A1 Armament Accuracy Check (AAC) Data Sheet . . . . . . . . . . . . WP . 0538
Recording Boresight and Zero Data . . . . . . . . . . . . . . . . . . . . . . . . . . . WP . 0539

ALPHABETICAL INDEX

Index. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1
.

Change 4 xvi
 TM 9-2350-264-10-1

HOW TO USE THIS MANUAL

GENERAL
This manual contains operation and maintenance information for the M1A1 tank crew. The manual
is divided into three volumes, with volume number indicated on the cover by -1, -2, or -3 after the
basic TM number. It is further divided into 17 chapters:

a. GENERAL INFORMATION provides general information about the tank, identifies the
major components and systems, and describes how the components or systems work.

b. OPERATOR INSTRUCTIONS identifies operating controls and indicators and explains

how to use them. Most of the information is organized by each crew station (Driver,
Commander, Gunner, Loader). This chapter also covers how to operate the tank and
equipment during usual and unusual conditions, and how to respond to certain emer-
gency conditions.

c. MAINTENANCE INSTRUCTIONS explains what to do when something goes wrong with

the tank. It is organized into Troubleshooting and Maintenance Procedures sections.
Each section has its own index to provide a quick reference for solving a problem.
Troubleshooting helps the crew solve the problem through corrective action. Mainte-
nance Procedures tell the crew how to make the repairs allowed at crew level. This sec-
tion also contains preventive maintenance checks and services (PMCS) which are
performed to keep the tank in operating condition.

d. AMMUNITION identifies and describes the types of ammunition authorized for the tank
and where the ammunition is stowed.

e. SUPPORTING INFORMATION contains other information pertaining to references and

lists for basic issue items, tools, and expendables. Also contained in these chapters are
gunnery checks, data recording sheets, and other supporting data.
Each work package begins on a right hand page with a work package number. Pages are num-
bered after the work package number.
Example: 1000-1; means Work Package 1000, page 1.

xvii Change 4
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HOW TO USE THIS MANUAL - Continued

WARNINGS, CAUTIONS, AND NOTES

Information is provided throughout the manual which does not fit into a procedural step. This infor-
mation is in the form of warnings, cautions, and notes. Warnings are provided where injury may
occur to personnel on or near the tank. Warnings are preceded by the word WARNING with an
overscore and underscore as shown below:

WARNING

Do not leave driver's station when engine is running.

There are also a number of general warnings which should be read before operating the tank. The
pages with general warnings follow the cover and are lettered with lower case alphabetical char-
acters such as a, b, etc. Summary warnings follow full page warnings.
Cautions are provided where equipment may be damaged but no personnel injuries should result.
The word CAUTION is underscored, as shown below:

CAUTION

Engine speed controls speed of pivot. Do not make sudden pivot

turn; it may cause tank to throw track.
Notes provide information to operate the tank, but no equipment damage or personnel injury is
involved, as shown below:

NOTE

Main gun must be over rear deck to enter driver's station from turret.

WARNINGS, CAUTIONS, AND NOTES SHOULD NEVER BE

IGNORED.

Change 4 xviii
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HOW TO USE THIS MANUAL - Continued

TASK TITLES
Major task titles appear in bold type, capital letters, before the first step of the task:
Example: OPERATE MAIN GUN
When a major task has a number of subtasks, the subtasks will appear in parentheses after the
main task:
Example: OPERATE MAIN GUN (FIRE MAIN GUN)
Many subtasks are so complicated that a further breakdown of the subtask is necessary for clear
understanding. Under OPERATE MAIN GUN (FIRE MAIN GUN) there are a number of ways to
fire the gun. It can be fired in normal mode, or manual mode, or emergency mode. These titles
appear before the steps in the subtask that relate to that procedure:
Example: Fire in Normal Mode
A major task title, such as OPERATE MAIN GUN, may appear in more than one section of the
manual. Either the gunner or commander may fire the main gun and the loader loads the gun,
which are all part of operating it. So, OPERATE MAIN GUN appears in commander's and gun-
ner's stations, with various subtasks.

INTERNAL REFERENCING
In this manual, internal referencing is done by work package number or item number.
Example: Operate dome light, see (WP 0047) .
The example, WP 0047 refers you to Chapter 3, Work Package 0046 of this manual. The volume
number only appears in the reference when the location of the reference is in another volume in
the series. Sometimes it is necessary for the crewmember to do only particular steps of a refer-
enced procedure. When this occurs, references to maintenance tasks, procedures, or paragraphs
will be listed by work package and title as necessary (i.e., WP 0089, EXIT TANK).
For quick reference to a tank item or procedure, use the alphabetical index in the back of this
manual.

xix Change 4
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HOW TO USE THIS MANUAL - Continued

EXTERNAL REFERENCING
Referencing outside this manual will be done by the military publication number:
Example: Perform after firing procedures, see TM 9-1005-213-10.
The note, see LO 9-2350-264-13 refers you to the lubrication order for the M1A1 tank.
A list of all publications referenced in this manual is found in References WP 0493.

ALPHABETICAL INDEX
An alphabetical index is provided at the end of Volume 3. Items and operations are listed in alpha-
betical order with work package numbers. Example: Under E you will find: Enter Driver's Station
referenced to WP 0050.

LOCATION TERMS
The terms left, right, front, or rear are used to describe areas of the tank. The location terms are
used the way you would use them sitting in the driver's seat with main gun pointing forward.

Change 4 xx
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HOW TO USE THIS MANUAL - Continued

PROBLEMS AND MALFUNCTIONS

The tank may not work properly during operation. When malfunctions occur, the operator should
go to WP 0351 and look for the problem in the symptom (malfunction) index of the troubleshoot-
ing section. This index will direct the operator to the procedure for correcting the problem. The
troubleshooting procedure is a step by step process which, if followed, will accomplish all the
things the operator can do to identify exactly what is wrong and correct it. The procedures may
direct the operator to other sections of the manual, such as maintenance instructions. When the
operator has done all that can be done and the problem still exists, the operator will be directed to
notify field maintenance. If there is no procedure provided in the symptom (malfunction) index to
correct the problem, the operator should notify field maintenance.

ILLUSTRATIONS AND TEXT

Locator views are included wherever necessary. Callout numbers identifying equipment will
appear on the art and in parentheses in the text.

EXAMPLE

a. Set FIRE CONTROL MODE switch (1) to MANUAL. Make sure MANUAL light (2)
comes on.

b. Set RETICLE switch (3) on Gunner's Auxiliary Sight (GAS) for type of ammunition
loaded in main gun.

c. Look through GAS eyepiece (4) and identify target.

d. Ask tank commander for target range.

xxi/xxii blank Change 4

 TM 9-2350-264-10-1

CHAPTER 1

GENERAL INFORMATION, EQUIPMENT DESCRIPTION,

AND THEORY OF OPERATION
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION

SCOPE
The M1A1 combat (main battle) tank uses high speed, maneuverability, and a variety of weap-
ons to attack and destroy enemy tanks, equipment, and forces. The tank provides protection
from enemy weapons.
This manual gives crewmembers the information they need to operate the tank under usual and
unusual conditions. The manual also contains the data the crew needs to check the tank for
proper operation and to keep it serviceable. The manual contains special information for each
crew station consisting of driver's station, commander's station, gunner's station, and loader's
station.

MAINTENANCE FORMS, RECORDS, AND REPORTS

(1) (A) Army - Department of the Army forms and procedures used for equipment maintenance
will be those prescribed by PAM 750-8, The Army Maintenance Management System (TAMMS)
Users Manual; or AR 700-138, Army Logistics Readiness and Sustainability.
(2) (MC) Marine Corps - Maintenance forms and records used by Marine Corps personnel are
prescribed by TM 4700-15/1.

0001-1 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

HAND RECEIPT (-HR) MANUAL

This Users Manual has a companion document with a TM number followed by -HR (Hand
Receipt). TM 9-2350-264-10-HR consists of preprinted hand receipts DA Form 2062 that list end
item related equipment (i.e., COEI, BII, and AAL) you must account for. If a difference exists
between the two manuals, use the information contained in this Users Manual. As an aid to
property accountability, additional -HR manuals may be requisitioned from the publications
resupply system AUTODIN. Instructions for use of AUTODIN are contained in PAM 25-33,
User's Guide For Army Publications and Forms, 15 September 1996.
SECURITY OF TURRET FRONT ARMOR
WARNING
The turret front on some M1A1 tanks contains Depleted Uranium (DU) which
poses a radiation hazard when exposed. Before touching or working around the
exposed area or performing any repair actions, see Vol 2, WP 0343 and TB
9-1300-278 for safety procedures.
If the tank is involved in an accident or ballistic incident where the turret front DU armor is
breached (see RADIATION HAZARD WARNING on page b, paragraph 3) revealing the inner
makeup of the armor, the commander (or other person in charge) must immediately see that the
breach in the armor is covered. Any material on hand to include tarpaulins, bedrolls, tape, mud,
or any similar materials available must be used to quickly cover the damaged area. This tempo-
rary measure should remain in place until the breach has been sealed by welding it closed or by
welding a patch over the damaged area by the appropriate maintenance personnel. Welding
repairs to areas around the DU armor, will be coordinated with the radiation protection officer.
These repairs should be completed no later than 24 hours after the breach has occurred. Do not
make repairs to exposed internal DU armor package.
Individuals who were exposed to armor breach and viewed the inner contents of armor, must be
identified to local security manager as soon as possible. Disclosure procedures for personnel
exposed to armor are defined in the Abrams Security Classification Guide and must be followed.
DESTRUCTION OF ARMY MATERIEL TO PREVENT ENEMY USE
Refer to TM 750-244-6 for destruction of Army materiel to prevent its use by the enemy if cap-
tured.
PREPARATION FOR STORAGE OR SHIPMENT
Refer to PAM 55-19, Tiedown Handbook for Rail Movements.
Refer to PAM 55-20, Tiedown Handbook for Truck Movements.
Refer to TEA PAM 55-22, Lashing Handbook for Marine Movements.
Refer to TM 9-2350-264-23-1.

Change 4 0001-2
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

REPORTING EQUIPMENT IMPROVEMENT RECOMMENDATIONS (EIR)

Army: If your M1A1 tank needs improvement, let us know. Send us an EIR. You, the user, are
the only one who can tell us what you do not like about your equipment. Let us know why you do
not like the design or performance.

All non-Aviation/Missile EIRs and PQDRs must be submitted through the Product Data Report-
ing and Evaluation Program (PDREP) Web site. The PDREP site is:
https://www.pdrep.csd.disa.mil/.

If you do not have Internet access, you may submit your information using an SF 368 (Product
Quality Deficiency Report). You can send your SF 368 using email, regular mail, or fax using the
addresses/fax numbers specified in DA PAM 750-8, The Army Maintenance Management Sys-
tem (TAMMS) Users Manual. We will send you a reply.

Marine Corps: If your M1A1 tank needs improvement, send us an EIR. You, the user, are the
only one who can tell us what you do not like about your equipment. Let us know why you do not
like the design or performance. The preferred method for submitting Product Quality Deficiency
Reports (PQDRs) is through the Marine Corps Electronic Product Support Web site at
http://logcom.usmc.mil/pqdr/. If the above method is not available to you, put it on a Standard
Form (SF) 368, Product Quality Deficiency Report, and mail it to us at: Marine Corps Logistics
Command, PQDR Section (L15), 814 Radford Blvd., Ste 20330, Albany, GA 31704.

0001-3 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

CORROSION PREVENTION AND CONTROL (CPC)

Corrosion prevention and control of Army materiel is a continuing concern. It is important that
any corrosion problems with this item be reported so that the problem can be corrected and
improvements can be made to prevent the problem in future items. The term "corrosion" means
the deterioration of a material or its properties due to a reaction of that material with its chemi-
cal environment. An example is the rusting of iron. Corrosion damage in metals can be seen,
depending on the metal, as tarnishing, pitting, fogging, surface residue, and/or cracking. Plas-
tics, composites, and rubbers can also degrade (also considered to be corrosion based on the
above definition of corrosion). Degradation is caused by thermal (heat), oxidation (oxygen),
solvation (solvents), or photolytic (light, typically ultraviolet) processes. The most common expo-
sures are excessive heat or light. Damage from these processes will appear as cracking, soften-
ing, swelling, and/or breaking. The US Army has defined the following nine (9) forms of
corrosion used to evaluate the deterioration of metals. These shall be used when evaluating and
documenting corrosion.
UNIFORM (or general attack) : Affects a large area of exposed metal surface, like rust on steel
or tarnish on silver. It gradually reduces the thickness of the metal until it fails.
CREVICE : Occurs in crevices created by rubber seals, gaskets, bolt heads, lap joints, dirt or
other surface deposits. It will develop anywhere moisture or other corrosive agents are trapped
and unable to drain or evaporate.
SELECTIVE LEACHING : One element, usually the anodic element of an alloy, corrodes away,
leaving the cathodic element. This can create holes in metal.
INTERGRANULAR : Metal deterioration caused by corrosion on the bonds between or across
the grain boundaries of the metal. The metal will appear to be peeling off in sheets, flaking, or
being pushed apart by layers. A particular type of intergranular corrosion is exfoliation.
PITTING : This can result from conditions similar to those for crevice corrosion. Pits can develop
on various materials due to their composition. Rifle boxes are big victims of pitting.
EROSION : Results when a moving fluid (liquid or gas) flows across a metal surface, particularly
when solid particles are present in the fluid. Corrosion actually occurs on the surface of the
metal, but the moving fluid washes away the corrosion and exposes a new metal surface, which
also corrodes.
FRETTING : Occurs as a result of small, repetitive movements (e.g., vibration) between two sur-
faces in contact with each other. It's usually identified by a black powder corrosion product or
pits on the surface.
GALVANIC : Occurs when two different types of metal come in contact with each other, like steel
bolts on aluminum, for example. This is a common problem on aircraft because of their mix of
metals.
STRESS : Term used to describe corrosion cracking and corrosion fatigue. Where an item is not
ready/available due to one of these forms of corrosion, it shall be recorded as a corrosion fail-
ure in the inspection record and the appropriate code (170) for corrosion shall be used when
requesting/performing maintenance.
SF Form 368, Product Quality Deficiency Report should be submitted to the address specified in
DA PAM 750-8, The Army Maintenance Management System (TAMMS) Users Manual.
Refer to TB 43-0213, Corrosion Prevention Control (CPC) for Tactical Vehicles for more informa-
tion on CPC. CPC maintenance actions such as cleaning, priming, and painting shall be per-
formed in accordance with TB 43-0213.
OZONE DEPLETING SUBSTANCES (ODS)
The automatic fire extinguishing system in the crew compartments contains bottles of Halon
1301, a Class I ODS. These bottles should only be filled or otherwise handled by qualified per-
sonnel. Halon 1301 should not be purposefully vented into the atmosphere.

Change 4 0001-4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

CORROSION PREVENTION AND CONTROL (CPC) - continued

NOMENCLATURE CROSS-REFERENCE LIST

Common Name Official Nomenclature

Amplifier Amplifier, AM 1780/VRC

Commander's Handle Commander's Control Assembly

CREWII Counter RCIED Electronic Warfare II

CVC Helmet Combat Vehicle Crewmember
Helmet with Headset and
Microphone Installed
Decontaminating Apparatus Decontaminating Apparatus, Portable,
0DS2, 1-1/2 Quart, ABC-M11
Driver's Vision Enhancer AN/VAS-5A (V) 4 Viewer, Infrared

Gunner's Handles Gunner's Control Grip Assembly

Intercom Box Control Intercommunication Set,
C-10456/VRC

Loader's Toe Guard Loader's Safety Guard

Mud Scraper Roadwheel Scraper

NBC Filter System, Backup Filter Unit, Gas Particulate, Tank,

20 CFM, M13A1
Night Vision Viewer or Night Periscope Viewer, Driver's Night Vision
AN/VVS-2 (V) 2 Assembly

Enhanced Position Location Reporting System Vehicle Radio Set

(EPLRS) AN/VSQ-2A (V) used with Position Location
Reporting System (PLRS) AN/USQ-90

Precision Lightweight GPS Receiver Satellite Signals Navigation Set AN/PSN-11

Protective Mask Mask, Chemical, Biological, M42A1 or, if
equipped, Mask, Chemical-Biological: Joint
Service General Purpose, Combat
Vehicle, M51

Receiver-Transmitter Receiver-Transmitter, Radio,

RT-1523E/VRC
Remote Thermal Sight .50 Cal Thermal Sight/Day TV System
Safety Clip Retainer, Nut and Bolt

SINCGARS Single Channel Ground/Airborne Radio System

Slew To Cue (STC) Alinement Pushbutton Slew To Cue (STC) Zero Pushbutton

0001-5 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

NOMENCLATURE CROSS-REFERENCE LIST - continued

Stub Base Deflector Loading Ammunition Tray

Tank Commander's Panel Commander's Power Distribution Panel

Unity Window (GPS) Optical Window

Change 4 0001-6
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS

A - After (PMCS)
A - Annually
AAC - Armament Accuracy Check
AAL - Additional Authorization List
ACALA - Armament and Chemical Acquisition and Logistics
ACK - Acknowledge
ACV - Air Cooled Vest
AIR TEMP - Air Temperature
ALM MUTE - Alarm Mute
AMCCOM - U.S. Army Armament, Munitions and Chemical Com-
mand
AMMO - Ammunition
AMMO SUBDES - Ammunition Sub-Designation
AMMO TEMP - Ammunition Temperature
AMP - Ampere
ANCD - Automated Network Control Device
AP - Armor-Piercing
APERS-T - Anti-Personnel with Tracer
APFSDS-T - Armor-Piercing Fin Stabilized Discarding Sabot with
Tracer
API - Armor-Piercing Incendiary
APIT - Armor-Piercing Incendiary Tracer
AQD - Armor Quick-Disconnect
AR - Army Regulation
AR - As Required
ASIP - Advanced System Improvement Program (SINCGARS)
ASP - Ammunition Supply Point
As Req - As Required
AUTH - Authorized
AUTO - Automatic
AUTOVON - Automatic Voice Operated Network
AUX HYD - Auxiliary Hydraulic
AUX HYDR POWER - Auxiliary Hydraulic Power
AZ - Azimuth
B - Before (PMCS)
BACK - Backup
BARO PRESS - Barometer Pressure
BAT - Battery
BATTLE SGT - Battlesight
BD - Base Detonating
BH - Black Hot
BICU - Biocular Image Control Unit
BII - Basic Issue Items
BIT - Built-in-Test
BO - Blackout
BS - Boresight
BS ADJUST - Battlesight Adjust
BTL SITE - Battle Sight
C - Centigrade or Celsius (Temperature)
C - Operator/Crew (Maintenance Level)
CAC - Common Access Card
CAC/PKI - Common Access Card/Public Key Infrastructure
CAGEC - Commercial and Government Entity Code

0001-7 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

CAL - Caliber/Calibration
CAN - Canister
CAN - Controller Area Network
CAP - Commander's Alert Panel
CB - Circuit Breaker
CBR - Chemical, Biological, Radiological
CBRN - Chemical, Biological, Radiological, Nuclear
CCF - Computer Correction Factor
CCP - Computer Control Panel
CCU - Camera Control Unit
CDR - Commander
CEP - Circulator Error Probability
CFM - Cubic Feet per Minute
CHAN - Channel
CHEM - Chemical
CI - Center of Impact
CKT BKR - Circuit Breaker
CKT/ckt - Circuit
CLR - Clear (on Thermal Receiver Unit)
CM/cm - Centimeter
COAX - Coaxial
COEI - Components of End Item
COM - Commercial
COMSEC - Communication Security
CONUS - Continental United States
CP - Commander's Panel
CPU - Computer Processing Unit (Applique)
CREWII - Counter Radio Controlled Improvised Explosive Device
Electronic Warfare II
CRT - Cathode Ray Tube
CT - Cipher Text (SINCGARS)
CTA - Common Table of Allowances
CTR - Center
CVC - Combat Vehicle Crewman
CWS - Commander's Weapon Station
C3 - Command, Control, and Communications
D - Down (Computer Control Panel)
D - Drive (Transmission Shift Control)
D - During (PMCS)
DA - Department of the Army
DAGR - Defense Advanced GPS Receiver
DAP - Driver's Alert Panel
DCA - Diagnostic Controller Assembly
DCM - Display/Control Module
DECU - Digital Electronic Control Unit
DEG/deg - Degree
DHI - Driver's Hatch Interlock
DIP - Driver's Instrument Panel
DMP - Driver's Master Panel
DRMO - Defense Reutilization and Marketing Office
DSN - Defense Switched Network

Change 4 0001-8
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

DU - Depleted Uranium
DU - Display Unit (Applique)
DVD - Driver's Video Display
DVE - Driver's Vision Enhancer
DVR - Driver
EA/ea - Each
EAPU - External Auxiliary Power Unit
ECU - Electronic Control Unit
ED - Embedded Diagnostics
EFC - Effective Full Charge
EMFS - Electro-Mechanical Fuel System
EIR - Equipment Improvement Recommendation
EIS + - Enhanced Information System Plus
EL - Elevation
EL UNCPL - Elevation Uncouple
ELRF - Eyesafe Laser Rangefinder
ENG FIRE - Engine Fire
EPLRS - Enhanced Position Location Reporting System
ESF - Eye Safe Filter
ETI - Elapsed Time Indicator
EU - Electronics Unit
EW - Electronic Warfare
F - Direct Support Maintenance
F - Fahrenheit (Temperature)
F - Fast
F - Fault
F - Fire
F.R.G. - Federal Republic of Germany (West Germany)
FBCB2 - Force XXI Battle Command Brigade and Below
FC - Fire Control
FC MALF - Fire Control Malfunction
FCTN - Function
FEP - Firepower Enhancement Program
FEP TIS - Firepower Enhancement Program Thermal Imaging Sys-
tem
FFCS - Full Function Crew Station
FH - Frequency Hopping (SINCGARS)
FH/M - Frequency Hopping/Master (SINCGARS)
FHZ - Frequency Hopping Zero (SINCGARS)
FILT CLOG - Filter Clogged
FIRE CONTROL MALF - Fire Control Malfunction
FLIR - Forward Looking Infrared
FLTR - Filter
FM - Field Manual
FOV - Field of View
FRH - Fire Resistant, Rust Inhibited, Hydraulic Fluid
FSDS-T - Fin Stabilized Discarding Sabot with Tracer
FTL - Far Target Location
GAL/gal/gl - Gallon
GAS - Gunner's Auxiliary Sight
GAS OVERTEMP - Gas Overtemperature

0001-9 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

GAS PARTIC FILTER - Gas Particulate Filter

GCH - Gunner's Control Handle
GPS - Global Positioning System
GPS - Gunner's Primary Sight
GPSE - Gunner's Primary Sight Extension
GRC - Gyroscope Reticle Compensation
GTD - Gun/Turret Drive
GYRO/gyro - Gyroscope
H - General Support Maintenance
H - Hour
HEAT-T - High-Explosive Anti-Tank with Tracer
HEAT-T-MP - High-Explosive Anti-Tank with Tracer, Multipurpose
HFOM - Horizontal Figure of Merit
HG/Hg - Inches of Mercury (Pressure Measurement)
HI - High
HNB - Hull Networks Box
HPDB - Hull Power Distribution Box
HQ - Headquarters
HR - Hand Receipt
HWR - Heater, Water Ration
HYD/HYDR - Hydraulic
IAW - In Accordance With
IBIT - Initiated Built-In-Test
ICU - Image Control Unit
IDN - Initial Distribution Number
IGV - Inlet Guide Vane
ILLUS - Illustration
IN./in. - Inch
incl - Including
INT ONLY - Internal-Communications Only
INU - Inertial Navigation Unit
IR - Infrared
JA - Jet Aviation
JP - Jet Propellant
JTA - Joint Table of Allowance
KG/Kg/kg - Kilogram
km/h - Kilometers per hour
KM/Km/km - Kilometer
KT/kt - Kit
L - Left (on Computer Control Panel)
L - Left (on Thermal Receiver Unit)
L - Low (on Transmission)
L/l - Liter
LAGS - Loader's Armored Gun Shield
Lb/lb - Pound
LO - Lubrication Order
LOS - Line of Sight
LOW BAT CHG - Low Battery Charge
LR - Left Right
LRF - Laser Rangefinder
LRPO - Local Radiation Protection Officer

Change 4 0001-10
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

M - Medium
M - Monthly (PMCS)
M/m - Meter
MA - Master (HDB)
MA - Muzzle Action
MALF - Malfunction
MAN - Manual
MCD - Missile Countermeasure Device
MCP - Mission Capability Power
MCS - Master Control Station (VIS)
MC-TUNE-KC - Megacycles-Tune-Kilocycles (Megahertz-Tune-Kilohertz)
MFoCS - Mounted Family of Computer Systems
MFoCS PU - Mounted Family of Computer Systems Processing Unit
MGRS - Military Grid Reference System
MI/mi - Mile
MIL/S - Unit of Measure for Angles or Arcs per Second
MIL-STD - Military Standard
MILS/mils - Unit of Measure for Angles or Arcs
MM/mm - Millimeter
MPAT - Multipurpose Anti-tank
MPAT/OR - Multipurpose Anti-tank/Obstacle Reduction
MPAT-TP-T - Multipurpose Anti-tank - Target Practice - Tracer
MPCG - Man Portable Chamber Gage
MPH/mph - Miles per Hour
MRS - Muzzle Reference Sensor (Collimator)
MST - Master
MT - Mechanical Time
N - Neutral
NAVMC - Navy Marine Corps
NBC - Nuclear, Biological, and Chemical
NFM - North Finding Module
NFOV - Narrow-Field-Of-View
NICP - National Inventory Control Point
NORM - Normal
NRC - Nuclear Regulatory Commission
NSN - National Stock Number
O - Field Maintenance (RPSTL)
OCONUS - Outside Continental United States
OR - Obstacle Reduction
ORS - Obscuration Reinforcement System
OSC - Operation Support Command
OVHT - Overheat
oz - Ounce
PA - Power Amplifier (SINCGARS)
PCU - Power Conditioning Unit (INU), (NFM), (RTS)
PCU - Power Control Unit (CWS)
PCU - Power Control Unit (Thermal)
PDB - Power Distribution Box
PIBD - Point Initiating Base Detonating
PJS - Pulse Jet System
PLGR - Precision Light Weight GPS Receiver

0001-11 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

PLRS - Position Location Reporting System

PMCS - Preventive Maintenance Checks and Services
PNL DIM - Panel Light Dimmer
PNL LGTS - Panel Lights
POL - Polarity
POS - Position (M1A1 self-position as FLIR or FEP TIS solu-
tion)
POSN - Position
PPI - Prime Power Interrupter
PRESS - Pressure
PRESS LOW - Pressure Low
psi - Pounds-per-Square-Inch
pt - Pint
PT - Plain Text (SINCGARS)
PTT - Push-To-Talk
PUST - Power-Up Self Test
PVT - Pivot
PWR - Power
PZ - Partial Zero (SINCGARS)
Q - Quarterly
QASAS - Quality Assurance Specialist (Ammunition Surveillance)
QD - Quick-Disconnect
qt - Quart
QTY RQR/Qty Reqd - Quantity Required
R - Reverse (on Transmission Shift Control)
R - Right (on Computer Control Panel)
R - Right (on Thermal Receiver Unit)
RADIO TRANS - Radio Transmit
RBCC - Rifle Bore Cleaning Compound
RCIED - Radio Controlled Improvised Explosive Device
RCVR - Receiver
rd - Round
rds/m / rdspm - Rounds per Minute
RDY - Ready
RETRANS - Retransmit
RHNB - Redesigned Hull Networks Box
RP - Red Phosphorus
RPM/rpm - Revolutions per Minute
RSID - Radio Set Identification (EPLRS)
RSSO - Radiation Safety Staff Officer
RT - Receiver Transmitter
R/T - Receiver Transmitter
RTN - Return
RTNB - Redesigned Turret Networks Box
RTS - Remote Thermal Sight
RV - Receive Variable (SINCGARS)
RVSS - Rear View Sensor System
S - Safe
SAL - Salvo
SAM - SAFE/ARMED MODULE
SC - Single Channel

Change 4 0001-12
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

SCHA - SCWS Control Handle Assembly

SCWS - Stabilized Commander's Weapon Station
SDC - Status Display Controller
Servo - Servomechanism
Sgt - Sight
SHTR - Shutter
SINCGARS - Single Channel Ground/Airborne Radio System
SLAP-T - Saboted Light Armor Penetrator-Tracer
SMD - Status Message Display
SOP - Standing Operating Procedures
SPA - Selectable Power Adapter
Stab - Stabilization
STAFF - Smart Target Activated Fire and Forget
STARPUBS - Standard Army Publications System
STBY - Standby
STC - Slew To Cue
TACOM - Tank-automotive and Armaments Command
TAMMS - The Army Maintenance Management System
TB SIG - Technical Bulletin Signal Corps
TBD - To Be Determined
TCA - Taillight Camera Assembly
TCP - Tank Commander's Panel
TDA - Table of Distribution and Allowances
TEMP - Temperature
TFOM - Time Figure of Merit
TGT - Target
TH232 - Thorium
THF4 - Thorium Fluoride
TIP - Tank Infantry Phone
TIS - Thermal Imaging System
TM - Technical Manual
TNB - Turret Networks Box
TOD - Time of Day
TOE/MTOE - Table of Equipment/Modified Table of Organization and
Equipment
TP-T - Target Practice with Tracer
TPCSDS-T - Target Practice Cone Stabilized Discarding Sabot with
Tracer
TPMP-T - Target Practice, Multipurpose with Tracer
TRU - Thermal Receiver Unit
TSM - Thermal Sight Module
TULSA - TACOM Unique Logistics Support Applications
TUR - Turret
TV - Television
U - Up
U/M - Unit of Measure
U.K. - United Kingdom (Great Britain)
UD - Up Down
URO - User Readout
USATACOM - U.S. Army Tank-automotive and Armaments Command
UTCP - Upgraded Tank Commander's Panel

0001-13 Change 4
 TM 9-2350-264-10-1 0001

GENERAL INFORMATION - Continued

LIST OF ABBREVIATIONS/ACRONYMS - continued

U238 - Depleted Uranium

V dc - Volts Direct Current
VID SEL - Video Select
VIS - Vehicular Intercommunications System
VOX - Voice Operated Switch
W - Weekly
WARN - Warning
WED - Wireless Embedded Diagnostics
WFOV - Wide-Field-Of-View
WH - White Hot
WP - White Phosphorous
WP-T - White Phosphorous with Tracer
YD - Yard
ZA - Zero All (SINCGARS)
ZOOM - Electronic Zoom
-

MISCELLANEOUS
1ST/1st - First
2ND/2nd - Second
3X/10X - Magnification of Power of 3 times or 10 times
6X/12X/25X/50X - Magnification of Power of 6 times, 12 times, 25 times, or
50 times
6X/13X/25X/50X - Magnification of Power of 6 times, 13 times, 25 times, or
50 times
% - Percent
° - Degree
°F - Degree Fahrenheit
°C - Degree Celsius
+ - Plus
− - Minus
± - Plus or Minus
←, →, ↑, ↓ - Left, Right, Up, Down

END OF WORK PACKAGE

Change 4 0001-14
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION

EQUIPMENT PURPOSE (MISSION)

To close with and destroy enemy forces using fire power, maneuver, and shock effect.

EQUIPMENT PURPOSE (CAPABILITY AND FEATURES)

Speed and Agility. A turbine engine mated to an automatic transmission provides high vehicle
speed and quick response to throttle movement. The throttle is combined with the steering bar
for complete control of vehicle speed and direction of travel at the same time.

Firing Accuracy. First round hit probability is improved over that of previous tank models through
the following features:

• Torsion bar suspension and rotary shock absorbers

• Hydraulically stabilized turret and gun

• Ballistic computer receiving information from a Laser RangeFinder (LRF).

• Additional computer input information supplied by a Muzzle Reference Sensor (MRS), ammu-
nition temperature sensor, and crosswind sensor.

Crew Protection. Maximum crew protection is provided by the following features:

• Tank armor and special design

• Automatic fire detection and suppression system

• Nuclear, Biological, and Chemical (NBC) detection and protection

• Low tank height, low engine noise, and low exhaust signature

• Automatic closure of ready ammunition compartment

• Compartmented fuel tanks and ammunition stowage areas

• Laser light reduction filters on all crew viewing and sighting equipment

Ease of Maintenance. In-place maintenance is made easy through the following features:

• Easy access to major tank components

• Built-in test capability with backup systems

0002-1 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS (EXTERNAL)

DRIVER'S HATCH (1): Permits driver to operate tank from armor-protected position with driver's
hatch (1) closed, or head-up position with driver's hatch (1) open. Closed driver's hatch (1) pro-
vides overall view of 170° horizontally and 8° vertically through three periscopes.
HEADLIGHTS (2): Contain service drive lights and blackout (BO) marker lamps.
SKIRT STEPS (3), LEFT AND RIGHT SIDES: Provide foot holds to help crewmembers mount
tank.
HAND HOLD (4), LEFT SIDE ONLY: Provides hand grip to help crewmembers mount tank.
SKIRTS (5), SIX ON EACH SIDE: Provide protection to upper portion of tracks and suspension.
SPONSON (6), RIGHT SIDE: Provides stowage for basic issue items. See (Vol 3, WP 0499) for
detailed list.
EXTERNAL FIRE EXTINGUISHER T-HANDLE (7): Actuates engine compartment fire extin-
guisher from outside the tank.
FUEL FILLER CAPS (8): Provide covers for four refueling points at front and rear and left and
right side of tank.

Change 3 0002-2
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(EXTERNAL) - continued

SUSPENSION SYSTEM (9 thru 15): Components of the suspension system are identical for
both sides of the tank.
SPROCKETS (9): Transfer power from the transmission and final drive to the tracks (hidden by
track retainer plates on tanks with that item installed).
SUPPORT ROLLERS (10): Support the weight of the track between the sprockets and compen-
sating idler wheels.
COMPENSATING IDLER WHEELS (11): Maintain track tension by compensating for changes in
the position of the number one roadwheels.
TRACK ADJUSTING LINKS (12): Allow increase or decrease of track tension.
ROADWHEELS (13): Maintain ground pressure and alinement of track. Roadwheels are num-
bered from front to back as numbers one, two, three, four, five, six, and seven.
ROADARMS (14): Connect roadwheels to hull and torsion bars.
ROTARY SHOCK ABSORBER HOUSINGS (15): Hydraulically dampen torsion bars of number
one, two, and seven roadwheels. This helps provide a smoother ride.

0002-3 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(EXTERNAL) - continued

TAILLIGHTS (16): Contain service taillights, service stoplights, blackout markers, and blackout
stoplights.
NATO SLAVE RECEPTACLE (16.1): Permits connection to an external 24 V dc power source at
rear of vehicle.
REAR GRILLE DOORS (17): Provide armor-protected exhaust outlet and partial access to
powerpack.
AIR INTAKE PORT (18): Provides air intake to engine.
PRECLEANER DOORS (19): Permit access to the precleaner for servicing.
TOP DECK LEFT GRILLE DOORS (20): Permit access to transmission for checking oil level.
ENGINE ACCESS COVER (21): Permits access to turbine engine for checking oil level.
TOP DECK RIGHT GRILLE DOORS (22): Permit access to primary fuel filter bypass handle and
fuel lines for doing emergency fuel transfer.
BATTERY COVERS (23): Permit access to batteries for servicing.
CROSSWIND SENSOR (24): Provides measurement of crosswind speed at the tank for input to
the ballistic computer.
RECEIVER/TRANSMITTER ANTENNA (25): Provides communication for Position Location
Reporting System (PLRS) AN/VSQ-1 radio set.
RECEIVER/TRANSMITTER ANTENNA (26): Antenna for AN/VRC-89 or AN/VRC-92 radio set, if
equipped, otherwise, antenna for R442 Auxiliary Receiver found on tanks equipped with
AN/VRC-12 radio set.
RECEIVER/TRANSMITTER ANTENNA (27): Main antenna for AN/VRC-89, AN/VRC-92, or
AN/VRC-12 radio sets.
TURRET STOWAGE BOXES (28), LEFT AND RIGHT SIDE: Provide stowage for basic issue
items and ammunition. See (Vol 3, WP 0499) and (Vol 3, WP 0533) for detailed list.
TANK INFANTRY PHONE (29): A fifth full-function crew station in the tank intercom system.

Change 3 0002-4
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(EXTERNAL) - continued
EXTERNAL AUXILIARY POWER UNIT (EAPU): Consists of fuel tank, diesel engine (naturally
aspirated, air-cooled), a 2kW or 3kW generator, starter, NATO connector (2kW) (30), or NATO
connector (3kW) (31), and associated controls and indicators. The EAPU provides 24-volt auxil-
iary electrical power to recharge the tank batteries.

MOVEMENT TRACKING SYSTEM (MTS): Satellite transceiver (32) that provides the communi-
cation capability for the Enhanced Information System Plus (EIS+).

0002-5 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(EXTERNAL) - continued

BORE EVACUATOR (33): Prevents main gun gases from entering turret when breech is opened.
MAIN GUN - 120 MM (34): Provides main armament for tank.
MUZZLE REFERENCE SENSOR (COLLIMATOR) (MRS) (35): As part of muzzle reference sys-
tem, provides gunner a reference point to determine gun tube bend caused by uneven heating
and cooling of the gun for manual input into ballistic computer.
THERMAL SHROUD (36): Reduces tube bend caused by heat by using a two-part aluminum
cover around main gun.
FLASH SUPPRESSOR (37): Hides flash from coaxial machinegun.
GUNNER'S PRIMARY SIGHT BALLISTIC SHIELD COVER (38): Protects Gunner's Primary
Sight (GPS) head assembly from small caliber fire and shell fragments.
COMMANDER'S WEAPON STATION (CWS) MACHINEGUN (39): Provides small caliber fire-
power and can be fired when commander's hatch (40) is in opened or closed. Normally a caliber
.50 machinegun is mounted, but a 7.62 mm (M240) machinegun can be mounted instead.
COMMANDER'S HATCH (40): Provides commander 360° protected viewing from closed, pro-
tected open, and full-open positions.
LOADER'S MACHINEGUN - 7.62 MM (M240) (41): Provides small caliber firepower.

Change 3 0002-6
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(EXTERNAL) - continued
LOADER'S HATCH (42): Provides crewmembers with normal entrance and exit to and from
tank.
SMOKE GRENADE DISCHARGERS (43): Provide smoke to screen tank. There is one dis-
charger on each side. Smoke grenades are fired from commander's station.
PRECISION LIGHTWEIGHT GPS RECEIVER (PLGR) ANTENNA or DEFENSE ADVANCED
GPS RECEIVER (DAGR) ANTENNA (44 or 45): Provides satellite signal reception for
AN/PSN-11 PLGR or HNV-660 DAGR.
COUNTER RCIED ELECTRONIC WARFARE II (CREWII) SYSTEM (46): Provides continuous
threat detection and active and responsive countermeasures against radio controlled improvised
explosive devices (RCIEDs).

0002-7 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(EXTERNAL) - continued

THERMAL SIGHT MODULE (TSM) (47) (if equipped): Component of Remote Thermal Sight
(RTS). Provides commander with thermal optic for acquiring, aiming, and engaging targets with
CWS at anytime and under all weather conditions.
STABILIZED COMMANDER'S WEAPON STATION (SCWS) MACHINEGUN (48): Provides sta-
bilized, accurate small caliber firepower and can be fired whenever commander's hatch (40) is
opened or closed, and on a moving platform. Normally a caliber .50 machinegun is mounted, but
a 7.62 mm (M240) machinegun can be mounted instead.

Change 3 0002-8
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS (INTERNAL)

GUNNER'S AUXILIARY SIGHT (GAS) (1): Allows gunner to aim main gun if Gunner's Primary
Sight (GPS) is not operating. The sight contains ballistic reticles for SABOT/STAFF and HEAT/
MPAT 120 mm rounds.
GUNNER'S PRIMARY SIGHT (GPS) (2): Provides gunner with optics for aiming the main gun
and coaxial machinegun during the day or at night. Allows gunner to control ranging, sighting,
and ammunition selection.
COMMANDER'S GPS EXTENSION (3): Provides commander with optics for aiming the main
gun and coaxial machinegun during the day or at night, by observing exactly what the gunner
sees through the GPS.
COMMANDER'S WEAPON SIGHT (4): Allows the commander to aim the commander's weapon
from inside the turret (during the day or night if equipped with thermal sight and day TV system).
The sight contains a ballistic reticle for the machinegun.
COMPUTER CONTROL PANEL (5): Allows the gunner to use and control ballistic computer in
sighting main gun and coaxial machinegun.
COMMANDER'S PANEL (UPGRADED TANK COMMANDER'S PANEL) (6): Provides com-
mander status data and control of tank main systems.
COMMANDER'S WEAPON STATION (CWS) (7): Provides commander open and closed hatch
control of his caliber .50 machinegun or alternate weapon in manual or power mode. Vision
blocks provide 360° field of view.
120 MM HULL AMMUNITION COMPARTMENT (8): Permits stowage of six rounds of 120 mm
ammunition for main gun. If an enemy round should enter the compartment and explode, blow
off panels under or on top of the compartment will direct the explosion away from the crew.
PRECISION LIGHTWEIGHT GPS RECEIVER (9): Provides commander position location used
by digital C3 subsystem and sync time used by SINCGARS.

0002-9 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(INTERNAL) - continued

120 MM BUSTLE AMMUNITION COMPARTMENT (10): Permits stowage of 34 or 36 rounds of

120 mm ammunition for main gun. Seventeen or eighteen rounds are in the ready ammunition
compartment behind the loader and 16, 17, or 18 rounds are in the stowage ammunition com-
partment behind the commander. Blowoff panels on the turret roof will direct any explosions
away from the crew if an enemy round should penetrate the compartment.
MAIN GUN BREECH (11): Provides loader's opening for loading main gun.
DRIVER'S INSTRUMENT PANEL (12): Shows driver the status of tank hull systems.
STEER-THROTTLE CONTROL (13): Allows driver to control engine speed and steer tank at the
same time.
DRIVER'S ALERT PANEL (14): Alerts driver to unusual or dangerous conditions in the tank sys-
tems. Driver must check his instrument panel (12) to pinpoint cause of alert.
DRIVER'S MASTER PANEL (15): Control starting and shutdown of engine, lights, and auxiliary
systems.
POWERPACK (16): Includes turbine engine, exhaust system, and transmission. Provides pri-
mary power for tank movement and electrical and hydraulic power for auxiliary systems.

Change 3 0002-10
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

LOCATION AND DESCRIPTION OF MAJOR COMPONENTS

(INTERNAL) - continued
DISPLAY UNIT (17): Provides commander status data and control of digital C3 subsystem;
mounted on display tilt bracket.
COMPUTER PROCESSING UNIT (not shown): Provides commander data processing and stor-
age capability for digital C3 subsystem.
KEYBOARD (18): Provides commander data input keys for data input and control of digital C3
subsystem.

0002-11 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

PERFORMANCE DATA
Turbine Engine:
Model........................................................................................................................AGT-1500C
Type...............................................................................Turbine, dual-compressor, regenerative
Governed speed
Low .........................................................................................................850 rpm to 950 rpm
Tactical idle .........................................................................................1200 rpm to 1400 rpm
No load....................................................................................................................2400 rpm
Full load ..............................................................................................3000 rpm to 3100 rpm
Fuel, Diesel
CONUS:
20° F (-7° C) to 115° F (46° C) .......................................................................DF-2 or JP8
-25° F (-32° C) to 20° F (-6° C) ......................................DF-1 or ASTM D 975 Grade 1-D
Below -25° F (-32° C) ....................................................Jet A-1 or VV-F-800 Grade DF-A
OCONUS:
20° F (-7° C) to 115° F (46° C) .......................................................................DF-2 or JP8
-10° F (-23° C) to 20° F (-6° C) ........................................Blend half and half NATO F-54
and F-34, or F-35, F-44, F-58 or
ASTM D1655 Grade Jet-A-1. If
blending isn't possible, use NATO
F-34 or F-35, F-44, F-58 or ASTM
D1655 Grade Jet-A-1
Between -10° F (-23° C) and -25° F (-32° C)........................NATO F-34 or F-35, F-44, or
ASTM D1655 Grade Jet-A-1
Below -25° F (-32° C) ...........................................................ASTM D1655 Grade Jet-A-1
Transmission:
Model ..........................................................................................................................X1100-3B
Ranges ..............................Four speeds forward, two reverse, with pivot and neutral selections
Performance:
Forward speed, maximum (paved level surface)..........................................41.5 mph (67 km/h)
Reverse speed, maximum (paved level surface) .........................................25 mph (40.2 km/h)
Range, constant 25 mph (40.2 km/h)
(dry, level secondary roads without refueling).....................................273-298 mi (439-480 km)
Vertical obstacle vehicle will climb (forward) .......................................................49 in. (124 cm)
Maximum width of ditch vehicle will cross (forward) .........................................108 in. (274 cm)
Fording depth
Without kit.......................................................................................................48 in. (122 cm)
With kit ...................................................................................................................Turret roof
Grade ascending ability, sustained speed at 5 mph (8.0 km/h)...................................60% (31°)
Grade descending ability (max) ..................................................................................60% (31°)
Sideslope (maximum) .................................................................................................40% (22°)
Traverse of turret .................................................................................................................360°

Change 3 0002-12
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

PERFORMANCE DATA - continued

Weight, Load, Ground Pressure:
Weight, Combat-loaded (less kits)
With T-156 track.......................................................................................................66.2 tons
With T-158 track.......................................................................................................67.6 tons
Military Load Classification (MLC)
With T-156 track .................................................................................................................67
With T-158 track .................................................................................................................68
Ground Pressure
T-156 track ...............................................................................................................14.00 psi
T-158 track ...............................................................................................................15.00 psi
Dimensions:
Length (overall, main gun rearward)............................................................355.6 in. (903.2 cm)
Length (gun forward) ...................................................................................386.9 in. (982.7 cm)
Height (ground to turret roof)............................................................................96 in. (243.8 cm)
Height (maximum overall)............................................................................113.6 in. (288.5 cm)
Width...........................................................................143.75 in. ± 0.54 in. (365.3 cm ± 1.4 cm)
Width (less skirts)..............................................................................................136 in. (345 cm)
Ground clearance T-156 track
(center portion of hull structure).................................................................19.0 in. (48.3 cm)
(other portion of hull structure)...................................................................17.0 in. (43.2 cm)
Ground clearance T-158 track
(center portion of hull structure).................................................................18.5 in. (47.0 cm)
(other portion of hull structure)...................................................................16.5 in. (41.9 cm)
Capacities (Fuel and Oil):
Fuel tanks
Left front ..................................................................................................106.6 gal. (403.5 L)
Right front................................................................................................149.8 gal. (567.0 L)
Rear
Left engine............................................................................................86.9 gal. (328.9 L)
Right engine .........................................................................................57.1 gal. (216.1 L)
Left sponson .........................................................................................59.0 gal. (223.3 L)
Right sponson.......................................................................................45.0 gal. (170.3 L)
Total in rear tank......................................................................................248.0 gal. (938.7 L)
Total in all tanks.....................................................................................504.4 gal. (1909.2 L)
Engine lubrication oil tank (refill, approximate) ......................................................17 qt (16.0 L)
Transmission (refill, approximate) ....................................................30 to 35 gal. (114 to 132 L)
Dry-transmission/converter and coolers......................................35 to 40 gal. (132 to 151 L)
Coolers ................................................................................................5 to 7 gal. (19 to 26 L)
Initial fill........................................................................................40 to 45 gal. (151 to 170 L)

0002-13 Change 3
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

PERFORMANCE DATA - continued

Controls:
Brakes
Operation..............................................................Hydraulic-mechanical service brake (foot)
Steering
Type............................................................................Hydraulic-mechanical steering control
Turning capability....................................................................................................360° pivot
Electrical:
Electrical system ..................................................24 V dc (operating range 18 V dc to 30 V dc)
Number of batteries...................................................................................................6 (12 V dc)
Main Armament:
Main gun, M256 .............................................................................................................120 mm
Life accuracy of gun tube..............................................................................................1500 rds
Length of recoil (normal)....................................................................................12 in. (30.5 cm)
Length of recoil (maximum) ...............................................................................13 in. (33.0 cm)
Ammunition .................................................................................120 mm combustible cartridge
Machineguns:
Coaxial machinegun, M240...........................................................................................7.62 mm
Loader's machinegun, M240 .........................................................................................7.62 mm
Weight ..........................................................................................................22.2 lb (10.1 kg)
Maximum effective range....................................................................900 m (tracer burnout)
Maximum range..........................................................................................3725 m (4075 yd)
Rate of fire:
Sustained (4-5 seconds between bursts,
barrel change every 10 minutes) .......................................................................100 rds/m
Rapid (2-3 seconds between bursts,
barrel change every 2 minutes ..........................................................................200 rds/m
Loader's skate mount movement limit .................................................................................180°
Loader's sector of fire ..........................................................................................................265°
Loader's elevation limit ........................................................................................................+65°
Loader's depression limit .........................................................................-35° (restricted sector)
Commander's Machinegun, M2 caliber .50:
Weight .....................................................................................................................84 lb (38 kg)
Maximum effective range .....................................................1200 m to 1600 m (tracer burnout)
Maximum range...............................................................................................................6700 m
Rate of fire ..................................................................................................................600 rds/m
Rifle:
M16 ...............................................................................................................................5.56 mm
Grenade:
Launcher ............................................................................................................................M250

Change 3 0002-14
 TM 9-2350-264-10-1 0002

EQUIPMENT DESCRIPTION - Continued

PERFORMANCE DATA - continued

Ammunition Quantity, see Chapter 16 for detailed information:
120 mm (for main gun, M256)..................................................................................40 or 42 rds
7.62 mm (for coaxial machinegun, M240) ..................................................................10,000 rds
7.62 mm (for loader's machinegun, M240) ...................................................................1400 rds
Caliber .50 (for commander's machinegun, M2) .............................................................900 rds
UKL8 series/M76IR (smoke grenades for turret side dischargers) .........................24 grenades
M67 (crew hand grenades) .......................................................................................8 grenades
5.56 mm (for rifle, M16) ...................................................................................................210 rds
Hydraulic System:
Capacities:
Hydraulic system ......................................................................................20 gal. (75.7 L) dry
Recoil mechanism (including replenisher)...................................................10.3 gal. (38.9 L)
Normal pressure .........................................................................................1500 psi to 1750 psi
External Auxiliary Power Unit (EAPU):
Engine:
Model...............................................................................................................................AD1
Type ...............................................................................................4-cycle, diesel, air-cooled
Cylinder ................................................................................................................................1
Fuel, Diesel:
CONUS...........................................................................................................................DF-2
OCONUS ............................................................................................................DF-2 or JP8
Dimensions:
Length ....................................................................................................31.125 in. (79.1 cm)
Width ........................................................................................................24.75 in. (62.9 cm)
Depth ........................................................................................................25.37 in. (64.4 cm)
Weight (as mounted) ...............................................................................425 pounds (193.0 kg)
Capacities:
Engine crankcase...............................................................................................5.7 pt (2.7 L)
Fuel tank........................................................................................................3.0 gal. (11.4 L)
Generator Output:
Voltage ............................................................28 V dc (operating range 18 V dc to 30 V dc)
Amperes ...........................................................................................................................100

END OF WORK PACKAGE

0002-15/16 blank Change 3
 TM 9-2350-264-10-1 0003

OPERATOR MAINTENANCE
INTRODUCTION - THEORY OF OPERATION

INTRODUCTION
The M1A1 combat tank consists of the hull (1) and turret (2) assemblies. The turret can rotate a
full 360°. All system connections between hull and turret are made through a slipring mecha-
nism.

END OF WORK PACKAGE

0003-1/2 blank
 TM 9-2350-264-10-1 0004

OPERATOR MAINTENANCE
FUEL REQUIREMENTS - THEORY OF OPERATION

The engine will burn a variety of fuels. DF-1, DF-2, JP8, and DF-A are recommended fuels, but
in an emergency, JP4 or MOGAS may be used.
Use of other than recommended fuels may reduce performance and life of engine. MOGAS
should only be used when no other fuel is available. MOGAS contains lead, and prolonged use
of leaded fuel will cause early engine failure. The engine may require overhaul after 25 hours of
operation if using MOGAS. The personnel heater will burn same fuel that engine will burn.

END OF WORK PACKAGE

0004-1/2 blank
 TM 9-2350-264-10-1 0005

OPERATOR MAINTENANCE
POWERPACK (GENERAL) - THEORY OF OPERATION

A powerpack (1) in rear of hull provides basic power to drive the tank. The powerpack (1) has a
turbine engine (2) mated to an automatic transmission (3). Accessories on powerpack (1) pro-
vide hydraulic and electrical power for tank and its auxiliary systems.

END OF WORK PACKAGE

0005-1/2 blank
 TM 9-2350-264-10-1 0006

OPERATOR MAINTENANCE
POWERPACK (TURBINE ENGINE) - THEORY OF OPERATION

The turbine engine (1) burns diesel fuel mixed with compressed and heated air. Air enters the
engine air inlet and flows through two compressors. The compressed air enters the regenerator
and is heated by exhaust gases. The heated and compressed air is directed into the combustion
chamber where it mixes with fuel vapor. Once burning is started by an ignition spark, continuous
burning occurs. The turbine engine (1) drives the automatic transmission (2) through a reduction
gearbox. Exhaust gases leaving the power turbine are used to heat incoming air and then routed
into the exhaust.

0006-1 Change 3
 TM 9-2350-264-10-1 0006

POWERPACK (TURBINE ENGINE) - THEORY OF OPERATION - Continued

Engine starting and operation are controlled by the engine Electronic Fuel Management System
(EFMS). The EFMS meters fuel to engine in response to driver's controls. During unusual condi-
tions the EFMS automatically controls engine's fuel flow and speed to protect the engine from
damage. If engine sensors fail, or the EFMS detects engine overspeed or overtemperature,
EFMS may limit engine performance, and driver will experience some loss of engine power. The
FUEL CONTROL FAULTY (3), GAS OVERTEMP (4), and ENGINE OVERSPEED (5) lights on
the Driver's Instrument Panel (DIP) (6) indicate EFMS problems. The Driver's Master Panel
(DMP) (7) has the switches and indicators used in starting and stopping engine.

ENGINE NORMAL START. On DMP (7), the MASTER POWER switch (8) and light (9) must be
on for an engine start. Engine start up is controlled by the Digital Electronic Control Unit (DECU)
after the PUSH-TO-START pushbutton (10) has been depressed. The starter turns the engine
and the ignition system produces a pulsating arc at the igniter (spark plug). The EFMS senses
engine rotation and directs fuel and air to engine. Engine speed, temperature, and other critical
conditions are continuously monitored by the DECU. If the DECU detects an out of limit condi-
tion, it protects the engine by shutting it down or by limiting engine power.
The engine speeds up to idle speed after the fuel ignites. When the electronic control system
senses idle speed, it automatically turns off starter and ignition. At the same time, the green
STARTED light (11) comes on. STARTED light (11) stays on for 10 seconds and then goes out.
The engine will continue to run as long as proper fuel and airflow is provided. The electronic
control system automatically aborts a start if engine starting conditions are not right. The sys-
tem will shut down engine during start if it senses overtemperature, overspeed, or low oil pres-
sure conditions. The system will also abort a start if the engine fails to reach idle speed (850-
900 rpm*) within about 45 seconds when outside temperature is above freezing (32° F, 0° C),
and about 60 seconds if below freezing. The abort system turns off the starter and ignition and
closes the main fuel shutoff valve. At the same time, it turns on the ABORT light (12).
* If tank has Digital Electronic Control Unit (DECU), idle speed in neutral could be much lower
and still be normal. If transmission is put in gear or throttle hand grips are rotated, response will
be normal.

Change 3 0006-2
 TM 9-2350-264-10-1 0006

POWERPACK (TURBINE ENGINE) - THEORY OF OPERATION - Continued

ENGINE SHUTDOWN. Normal engine shutdown is achieved by waiting 2 minutes for engine
cool-down, then moving and releasing the spring-loaded SHUTOFF switch (13) to the down
position. When SHUTOFF switch (13) is moved down to SHUTOFF, an input signal is sent to the
DECU, which then signals for the main fuel shutoff valve to close. This stops fuel flow to the
engine. The engine should coast to a stop in 30 to 60 seconds.

ENGINE CONTROL. Engine speed is controlled by twist grips (14) on the steer-throttle control
(15). Both twist grips (14) turn in the same direction and either can be used to control engine
speed. A higher (tactical) idle speed can be selected by setting TACTICAL IDLE switch (16) to
ON. This raises idle speed from normal (850 rpm to 950 rpm) to between 1200 rpm and 1400
rpm.
ENGINE STARTER. The STARTER ONLY switch (17), when held to engaged, rotates the
engine without turning on ignition or fuel pumps. STARTER ONLY switch (17) is used when
engine must be rotated but not started.

END OF WORK PACKAGE

0006-3/4 blank Change 3
 TM 9-2350-264-10-1 0007

OPERATOR MAINTENANCE
POWERPACK (TRANSMISSION) - THEORY OF OPERATION

The transmission controls three tank functions: driving, steering, and braking. Power from the
transmission is transferred through the transmission's outputs to drive the sprockets. Steering
the tank is done within transmission. Steering commands originate from the driver's steer-throttle
control. Braking the tank is done at each transmission output. A cable from the service brake
pedal is mechanically connected to a shaft on the transmission. Pressure on the pedal turns the
shaft to engage both brake packs through hydraulic action within the transmission. Pressure on
the parking brake pedal is boosted through a hull hydraulic cylinder to mechanically engage both
brake packs.
SHIFT CONTROL. The transmission has four forward speeds and two reverse speeds, a neutral
and a pivot condition. The shift control (1) on steer-throttle control (2) electrically controls trans-
mission setting. The shift control (1) can set transmission to D (normal forward drive range), L
(low forward drive range), R (reverse), N (neutral), or PVT (pivot). If transmission control electri-
cal power fails, the transmission continues to operate in the selected setting until engine is shut
down. When the engine is shut down, the shift control (1) remains as selected, but the transmis-
sion automatically shifts to neutral.

STEER-THROTTLE CONTROL. The steer-throttle control (2) in front of the driver controls direc-
tion of tank travel. With the steer-throttle control (2) in its center position, transmission drives
both output shafts at same speed. This drives the tank in a straight line. If steer-throttle control
(2) is moved, the transmission speeds up one output shaft and slows other. The amount of
speed difference depends on how far steer-throttle control (2) is moved. No braking action is
involved in steering the tank. If the engine fails while the tank is moving forward, steering
remains effective until speed drops to about 3 mph (5 km/h).
The tank can be pivoted in place by setting shift control (1) to PVT and moving steer-throttle con-
trol (2). In this condition, the transmission drives one track in reverse and one forward.

0007-1
 TM 9-2350-264-10-1 0007

POWERPACK (TRANSMISSION) - THEORY OF OPERATION - Continued

BRAKE CONTROLS. The driver's service brake pedal (3) stops the tank. A red warning light (4)
on the driver's master panel (5) comes on when the engine is running and the service brakes
have been engaged for more than 2 minutes.
The parking brake pedal (6) is hydraulically linked to a parking brake assembly, which is
mechanically linked to the transmission. Handle (7) unlocks the parking brakes. The parking
brake system should not be used when the tank is moving, except in an emergency. Warning
light (4) on the driver's master panel (5) comes on when the parking brake is engaged.
If the engine stops while the tank is moving forward, the driver can still use the service brakes.
The vehicle will not respond as quickly to service brakes as it would with engine running.

END OF WORK PACKAGE

0007-2
 TM 9-2350-264-10-1 0008

OPERATOR MAINTENANCE
PULSE JET SYSTEM (PJS) - THEORY OF OPERATION

PJS used on the M1A1 tank maintains an adequate flow of air to the engine under all conditions
by automatically cleaning the air filters. PJS applies scheduled bursts of high pressure air to the
inside of each individual air cleaner (V-pack) (1) to blow out dust and dirt accumulations. The
bursts of high pressure air are regulated by nine Pulse Control Valves (PCV) (2) attached to the
air pressure accumulator (3) installed in the engine air intake plenum. There are three PCVs (2)
for each V-pack (1).
Engine bleed air is used to charge the air pressure accumulator to approximately 200 psi. Each
of the nine PCVs (2) open individually one at a time and direct high pressure air pulses to the
inside of the individual V-packs (1). These high pressure pulses of air use a momentary reverse
air flow through a portion of the V-pack (1) which is in line with each PCV (2) to carry out dust or
dirt accumulations from that portion of the V-pack (1). Any dust or dirt blown out falls to the bot-
tom of the air box and is removed overboard through the scavenge ducts in the bottom of the air
cleaner box.

Pulse Control Unit (PCU) (4) mounted next to the hydraulic reservoir in the crew compartment
powers up when master power is applied to the tank and controls operations of PJS. PJS acti-
vates automatically when engine speed exceeds 1550 rpm and deactivates when engine speed
falls below 1410 rpm. The PCU (4) continuously monitors engine status and air flow restrictions.

0008-1 Change 3
 TM 9-2350-264-10-1 0008

PULSE JET SYSTEM (PJS) - THEORY OF OPERATION - Continued

Under normal conditions, PCU (4) operates in low clean mode. In low clean mode, the PCU (4)
pulses nine PCVs (2) three times (27 pulses total) at 10 second intervals, then stops pulsing and
continues to monitor engine status and air flow restrictions for approximately 15.5 minutes. PCU
(4) repeats this pulse/monitor cycle until either an air flow restriction is sensed or engine speed
falls below 1410 rpm.
If air flow restriction is sensed by PCU (4), the PCU (4) operates in high clean mode, pulsing
PCVs (2) continuously until air flow restriction condition is eliminated. Once air flow restriction is
eliminated, PCU (4) returns to low clean mode.

When vehicle master power is applied, PCU (4) powers up. During engine operation, PCU (4)
periodically runs a self test. If operations continue to a point where significant air flow restric-
tions occur, AIR CLEANER CLOGGED FILTER caution light (5) may appear on Driver's Instru-
ment Panel (DIP) (6).

END OF WORK PACKAGE

Change 3 0008-2
 TM 9-2350-264-10-1 0009

OPERATOR MAINTENANCE
FUEL SYSTEM - THEORY OF OPERATION

Engine fuel is stored in three tanks: right front (1), left front (2), and rear. The rear tank is divided
into four connected fuel cells: right sponson (3), right engine (4), left engine (5), and left sponson
(6). The driver can tell how full each tank is by moving the tank selector switch (7) and looking at
fuel gauge (8). Fuel gauge (8) shows the fuel level in the tank selected by the TANK SELECTOR
switch (7). Both the TANK SELECTOR switch (7) and the fuel gauge (8) are on the driver's
instrument panel (9). A LOW FUEL LEVEL light (10) on the driver's instrument panel (9) comes
on when the rear tank is less than 1/8-full. LOW FUEL LEVEL light (10) will go off by the time
3/8-full is indicated.

0009-1
 TM 9-2350-264-10-1 0009

FUEL SYSTEM - THEORY OF OPERATION - Continued

The engine runs on fuel from the rear tank only. The two pumps (11) in the rear tank start auto-
matically when the engine is started, and stop when the engine is shut down. One pump (12)
serves both forward tanks. When LOW FUEL LEVEL light (10) is on and the driver selects a for-
ward tank with TANK SELECTOR switch (7), fuel is transferred from the selected tank to the rear
tank. Vehicle master power must be turned on before fuel can be transferred.

END OF WORK PACKAGE

0009-2
 TM 9-2350-264-10-1 0010

OPERATOR MAINTENANCE
ELECTRICAL SYSTEM - THEORY OF OPERATION

The tank uses a 24-volt direct current electrical system. When the engine is not running, power
is supplied by six 12-volt batteries in the right sponson. Batteries are connected to provide
24-volt power. When the engine is running, power is supplied by an alternator on the powerpack.
The alternator produces between 26-volt and 29-volt direct current power. Circuit breakers (1, 2,
3) on Hull Power Distribution Box (HPDB) (4), Hull Networks Box (HNB) (5), and Turret Networks
Box (TNB) (6), respectively, control distribution of electrical power to the various tank systems.

0010-1
 TM 9-2350-264-10-1 0010

ELECTRICAL SYSTEM - THEORY OF OPERATION - Continued

If tank is equipped with the Redesigned Hull Networks Box (RHNB) (7) and Redesigned Turret
Networks Box (RTNB) (8), electronic and manual circuit breakers control distribution of electrical
power to the various tank systems.

The RTNB (8) enhances the electrical performance of the turret electrical system and improves
the diagnostic capability of the tank. RTNB (8) can be operated in RTNB and Diagnostics
(DIAG) modes. RTNB mode is used for normal operations. DIAG mode is used primarily by
maintenance personnel to troubleshoot and test the tank electrical system. The Status Display
Controller (SDC) (9) on the RTNB (8) is used to control and monitor the status of 31 electronic
Circuit Breakers (CBs), monitor the status of 6 manual CBs, and provide interface for Embedded
Diagnostics (ED). CB status messages are displayed in the Status Message Display (SMD) (10).
The RTNB (8) powers up in RTNB mode and performs a Power-Up-Self-Test (PUST) to verify
the turret electrical system and RTNB (8) are operating correctly.

0010-2
 TM 9-2350-264-10-1 0010

ELECTRICAL SYSTEM - THEORY OF OPERATION - Continued

The RHNB (7) enhances the electrical performance of the hull electrical system in the tank. The
SDC (11) on the RHNB (7) is used to control and monitor the status of 30 electronic CBs and
monitor the status of 5 manual CBs, 1 manual CB on the RHNB (7) and 4 manual CBs on the
HPDB (4). CB status messages are displayed in the SMD (10). The RHNB (7) automatically per-
forms a PUST at power up to verify the hull electrical system and RHNB (7) are operating cor-
rectly.

VEHICLE MASTER POWER switches (12, 13) are mounted on the driver's master panel (14)
and Commander's Panel (15) or the MST pushbutton (16) on the Upgraded Tank Commander's
Panel (UTCP) (17). Either switch (12, 13) or pushbutton (16) will turn electrical power on or off.
Green lights (18, 19, 20) will light when system power is turned on by either switch (12, 13) or
pushbutton (16).

0010-3
 TM 9-2350-264-10-1 0010

ELECTRICAL SYSTEM - THEORY OF OPERATION - Continued

A voltmeter (21) on the driver's instrument panel (22) shows system voltage when vehicle mas-
ter power is on. A LOW BAT CHARGE light (23) under the voltmeter (21) comes on when the
batteries need charging. Circuit breakers in the HNB (5) and Power Distribution Box (PDB) con-
trol power to the various hull systems. The CIRCUIT BREAKER OPEN light (24) warns the
driver if any manual reset hull circuit breaker is open. If RHNB (7) equipped, CIRCUIT
BREAKER OPEN light (24) warns the driver if a hull circuit breaker is TRIPPED or a manual cir-
cuit breaker is turned off.

0010-4
 TM 9-2350-264-10-1 0010

ELECTRICAL SYSTEM - THEORY OF OPERATION - Continued

The TURRET POWER switch (25) on the commander's control panel (15), or the TUR
pushbutton (26) on the UTCP (17), controls electrical power to the turret. TURRET POWER light
(27) and VEHICLE POWER light (19), or the TUR light (28) and MST light (20) on the UTCP
(17), come on when turret power is turned on. Circuit breakers in the TNB (6) control power to
the various turret systems. The CB OPEN light (29) warns the tank commander if any manual
reset turret circuit breaker is open. If RTNB (8) equipped, CB OPEN light (30) on UTCP (17)
warns the tank commander if a turret CB is TRIPPED or a manual CB is turned off. The LOW
BAT CHARGE light (31) or LOW BAT light (32) warns him if battery power is low. The FIRE
CONTROL MALFUNCTION light (33), or the FC MALF light (34), comes on if any major turret
cable is open or disconnected, or if any of the systems monitored by the computer fail.

0010-5
 TM 9-2350-264-10-1 0010

ELECTRICAL SYSTEM - THEORY OF OPERATION - Continued

END OF WORK PACKAGE

0010-6
 TM 9-2350-264-10-1 0011

OPERATOR MAINTENANCE
EMBEDDED DIAGNOSTICS (ED) SYSTEM - THEORY OF OPERATION

The ED system enhances the diagnostics capability of the tank and improves the time it takes
maintenance personnel to troubleshoot electrical malfunctions in the tank. ED system software
is embedded in the Redesigned Turret Networks Box (RTNB) (1). Several small components,
called Sidecar Modules (2), are mounted throughout the hull and turret and are electrically linked
to the RTNB (1). Sidecar Modules process electrical signals from electrical components in the
tank and distribute them to the RTNB (1). The ED system uses the electrical signals to detect
tank electrical system and component malfunctions.

If the ED system detects a fault in the electrical system while the RTNB (1) is in RTNB mode,
RTNB green Diagnostics (DIAG) mode light (3) will flash continuously, and green RTNB mode
light (4) will light. RTNB green DIAG mode light will flash continuously until MODE key (5) is
pressed. Once MODE key is pressed, amber ALERT light (6) will light, green RTNB mode light
will go out, and green DIAG mode light will stop flashing and remain lit indicating RTNB (1) has
switched from RTNB mode to DIAG mode (7). Fault messages will be displayed in the Status
Message Display (SMD) (8) on the Status Display Controller (SDC) (9). Amber ALERT light will
go out once ACK key (10) or ON/OFF key (11) is pressed. The operator can view additional fault
messages in the SMD by pressing Up or Down key (12).

0011-1
 TM 9-2350-264-10-1 0011

EMBEDDED DIAGNOSTICS (ED) SYSTEM - THEORY OF OPERATION - Continued

If the RTNB (1) detects a fault in the electrical system while the RTNB (1) is in the DIAG mode,
green DIAG mode light will be lit and green RTNB mode light will flash continuously until the
MODE key is pressed. Once MODE key is pressed, amber ALERT light will light, green DIAG
mode light will go out, and green RTNB mode light will stop flashing and remain lit, indicating
RTNB (1) has switched from DIAG mode to RTNB mode.

If equipped with Wireless Embedded Diagnostics (WED) system, the system gives the capability
of ED health checks during operations. The hull Diagnostic Controller Assembly (DCA) (13)
communicates wirelessly with the turret DCA (14). The turret DCA is located on the turret wall in
the loader's station. It contains a touch screen display (15) and provides the operator with health
and status information of the tank.

If WED system detects a fault from one of the 19 sidecar modules throughout the tank, a health
check fault will appear on the DCA display (15). The display (15) indicates the number of active
faults. Any fault (16) displayed must be acknowledged before proceeding to the next alert. Once
all of the active alerts have been acknowledged, the system diagnostics screen (17) will be dis-
played.

0011-2
 TM 9-2350-264-10-1 0011

EMBEDDED DIAGNOSTICS (ED) SYSTEM - THEORY OF OPERATION - Continued

The WED is displayed on the DCA touch screen through two system status screens (18, 19).
The DCA 1 status screen (18) reflects the WED components and sidecars in the turret (num-
bered 10 - 16 and 18 - 20). The DCA 2 (19) reflects WED sidecars in the hull (1 thru 9). If the
WED Built-In Test (BIT) identifies one of these components as faulty, the box will be highlighted
in red. Using the touch screen, a detailed status of the faulty sidecar can be displayed.

0011-3
 TM 9-2350-264-10-1 0011

EMBEDDED DIAGNOSTICS (ED) SYSTEM - THEORY OF OPERATION - Continued

The alert history screen (20) displays all of the previously acknowledged faults and the associ-
ated Run ID software versions. The Run ID is sequential and increases by one each time master
power is turned on.

The DCA detailed status screens show the status for the DCAs. The DCA 1 (21) and the DCA 2
(22) status screens show:
1. API version and health check version (turret DCA only) - indicates the software versions
installed on the DCA.
2. DCA configured as a master (turret DCA) or DCA configured as a slave (hull DCA).
3. Data logging run ID = xxxxx (turret DCA only) - Here is another indication of the Run ID. The
number will increase by one each time master power is applied to the DCA.

END OF WORK PACKAGE

0011-4
 TM 9-2350-264-10-1 0012

OPERATOR MAINTENANCE
HYDRAULIC SYSTEM - THEORY OF OPERATION

Hydraulic pressure is used to move main gun in elevation and turret in azimuth, open and close
the ready ammunition bustle door, operate the vehicle brakes, and operate the bilge pump. A
hydraulic pump on the main engine provides hydraulic pressure between 1500 - 1750 psi.

An electrically driven auxiliary hydraulic pump provides hull hydraulic pressure when the main
pump is not operating (engine not running) and vehicle master power is on. The AUX HYDR
POWER switch (1) on the Tank Commander's Panel (TCP) (2), or the AUX HYD pushbutton (3),
on Upgraded Tank Commander's Panel (UTCP) (4), is used to turn on or shut off the auxiliary
hydraulic pump. When auxiliary hydraulic pump is on, AUX HYDR POWER light (5), or the AUX
HYD light (6) on the UTCP (4), will light. Normal pressure is between 1150 psi and 1760 psi.

0012-1 Change 3
 TM 9-2350-264-10-1 0012

HYDRAULIC SYSTEM - THEORY OF OPERATION - Continued

The pressure gage (7) is to left of the Gunner's Primary Sight (GPS) (8) and to the right of Gun-
ner's Auxiliary Sight (GAS) (9). Pressure gage (7) indicates hydraulic system pressure.

Change 3 0012-2
 TM 9-2350-264-10-1 0012

HYDRAULIC SYSTEM - THEORY OF OPERATION - Continued

The parking brake system for the tank is hydraulically applied and mechanically held or
released. The driver's parking brake pedal (10) is connected to the tank hull hydraulic system.
Normal pressure for operating parking brake is between 1000 psi and 1700 psi. A pressure gage
(11) indicates hydraulic system pressure for the driver. The HYDRAULIC SYSTEM MALFUNC-
TION light (12) on the Driver's Instrument Panel (DIP) (13) alerts the driver of possible main
hydraulic system failure.

END OF WORK PACKAGE

0012-3/4 blank Change 3
 TM 9-2350-264-10-1 0013

OPERATOR MAINTENANCE
FIRE EXTINGUISHER SYSTEM - THEORY OF OPERATION

There are eight fire sensors in tank to detect and trip the automatic fire extinguisher system.
Three sensors are mounted in turret, one in the driver's compartment, and four in the engine
compartment. A fire in the crew or engine compartment will trip one or more sensors that send
signals to electrically operate the fire extinguisher bottles. Vehicle master power must be on for
any of the automatic fire warning or extinguishing features to operate.

The fire extinguisher bottles are equipped with a pressure warning label (1) and pressure gage
(2). Pressure warning label (1) indicates amount of pressure needed according to ambient tem-
perature. Pressure gage (2) indicates pressure of fire extinguisher bottle.

Manually operated controls for the fire extinguishing system are provided for crew and engine
compartments. These controls are located in the driver's station and outside on left side of tank.
The manual system is used if the automatic system fails.

The engine fire extinguisher system has two bottles which discharge one at a time. When fire
sensors in the engine compartment detect a fire, one bottle discharges automatically. When this
happens, the 1ST SHOT DISCHARGED LIGHT (3) on the Driver's Instrument Panel (DIP) (4)
comes on. At the same time, the MASTER CAUTION light (5) on the driver's alert panel (6)
comes on.

If the fire still burns, the following lights will be on: the 1ST SHOT DISCHARGED light (3), the
MASTER CAUTION light (5), the MASTER WARNING light (7) on the driver's alert panel (6) will
come on and stay on, and the ENGINE FIRE light (8) on the DIP (4) will flash on and off.

0013-1
 TM 9-2350-264-10-1 0013

FIRE EXTINGUISHER SYSTEM - THEORY OF OPERATION - Continued

When 1st shot bottle has not discharged automatically, the ENGINE FIRE light (8) will be lit and
the 1ST SHOT DISCHARGED light (3) will not be lit. Then the 1st shot bottle must be manually
discharged. Do this by pulling ENGINE-FIRE T-handle (9) on left side. If the fire still burns and
the 1st shot bottle is discharged, set the 2ND SHOT switch (10) to on. This shuts off the engine
and discharges the 2nd shot bottle after an 18-second delay. If 2nd shot bottle does not operate
or crew is outside tank, pull ENGINE-FIRE T-handle (11) on outside of tank to set off 2nd shot
bottle. This does not automatically shut off engine, as outside handle is linked directly to 2nd
shot bottle.

0013-2
 TM 9-2350-264-10-1 0013

FIRE EXTINGUISHER SYSTEM - THEORY OF OPERATION - Continued

The crew compartment fire detection and extinguishing system is a fully automatic system with
manual backup provisions. When sensors detect a fire, they automatically discharge the crew
compartment fire extinguisher bottle. This floods the entire compartment with fire extinguishing
gas. The crew should evacuate and air out the compartment immediately after fire extinguisher
discharge. The crew can enter tank after compartment clears.

The driver can discharge the fire extinguisher bottle by pulling CREW FIRE T-handle (12) if the
bottle fails to discharge automatically.
A portable fire extinguisher is mounted to the left of the tank commander. The crew must use
this extinguisher if the fire still burns after the compartment fire extinguisher is discharged.

END OF WORK PACKAGE

0013-3/4 blank
 TM 9-2350-264-10-1 0014

OPERATOR MAINTENANCE
INDICATOR, CAUTION, AND WARNING LIGHTS - THEORY OF OPERATION

Indicator lights are used to show status or condition of systems. Indicator lights may be green or
white; green means go, white shows status or that a test is in progress. Caution lights alert
crewmembers to a system fault or unsatisfactory condition. All caution lights are yellow. Warning
lights warn crewmembers of dangerous conditions which must be corrected or dealt with imme-
diately. Warning lights are red, with the exception of the SPONSON OVERHEAT IN light, which
may be yellow or red. Caution and warning lights are clearly marked to show their meaning.

When any warning light comes on, the red MASTER WARNING light (1) on the Driver's Alert
Panel (DAP) (2) also comes on. When a caution light comes on, the yellow MASTER CAUTION
light (3) comes on. The MASTER CAUTION light (3) will remain lit until RESET pushbutton (4) is
pushed. When the red MASTER WARNING light (1) is lit due to an engine overspeed or
overtemperature condition, it remains on until RESET pushbutton (4) is pushed. If the red MAS-
TER WARNING light (1) is lit for any other condition, it will remain on until the condition is cor-
rected. The panel dim (PNL DIM) pushbutton (5) allows the brightness of the DAP (2) lights to
be dimmed. When PNL DIM pushbutton (5) is pushed, the panel lights may be adjusted with the
rheostat on the Driver's Master Panel (DMP). The panel lights will always come on with full
brightness whenever vehicle master power is turned on.
Whenever the driver's hatch is open, and the turret power is on, the red Gun/Turret (G/T) Drive
Active light (6) will be lit, and the Driver's Hatch Interlock (DHI) will prevent the commander/
gunner from traversing the turret unless the DHI override is activated by the commander.

0014-1 Change 3
 TM 9-2350-264-10-1 0014

INDICATOR, CAUTION, AND WARNING LIGHTS - THEORY OF

OPERATION - Continued

Lights (1), (3) and (6) on DAP (2) tell the driver to look at the Driver's Instrument Panel (DIP) (7).
A lit warning or caution light (8) on DIP (7) indicates which tank system is in danger or in an
unsatisfactory condition. Red warning lights indicate an engine compartment fire or a dangerous
condition exists for the engine, Nuclear, Biological, and Chemical (NBC) system or transmission.
Yellow caution lights indicate an unsatisfactory condition or fault exists in several systems.
These systems and their related parts include the engine, transmission, and lubrication, electri-
cal, and fuel systems.

Change 3 0014-2
 TM 9-2350-264-10-1 0014

INDICATOR, CAUTION, AND WARNING LIGHTS - THEORY OF

OPERATION - Continued

If Redesigned Turret Networks Box (RTNB) (9) and Redesigned Hull Networks Box (RHNB) (10)
equipped, Circuit Breaker (CB) status and fault messages are displayed in the Status Message
Display (SMD) (11, 12) Amber ALERT light (13, 14) on Status Display Controller (SDC) (15, 16)
will light when one or more CBs are TRIPPED, a manual CB is off, or a fault in the electrical sys-
tem is detected. ALERT light will go out when the tripped CB is acknowledged, the fault mes-
sage is acknowledged, or the manual CB is turned on.

Green Diagnostics (DIAG) mode light (17) will flash when the Embedded Diagnostics (ED) Sys-
tem detects a fault in the tank electrical system or components and the RTNB (9) is operating in
the RTNB mode. Green RTNB mode light (18) will flash indicating a fault is detected in the elec-
trical system when the RTNB (9) is operating in DIAG mode.

END OF WORK PACKAGE

0014-3/4 blank Change 3
 TM 9-2350-264-10-1 0015

OPERATOR MAINTENANCE
FIRE POWER - THEORY OF OPERATION

All tank weapons are mounted in or on turret.

END OF WORK PACKAGE

0015-1/2 blank
 TM 9-2350-264-10-1 0016

OPERATOR MAINTENANCE
FIRE CONTROL MODES - THEORY OF OPERATION

NOTE
In normal fire control mode, when range is added, gun will have superelevation
applied and will elevate while reticle remains on target. When tracking a moving
target, turret will apply automatic lead while reticle remains on target.
The gun and turret can be operated in normal, emergency, or manual mode. The FIRE CON-
TROL MODE switch (1) on the Gunner's Primary Sight (GPS) (2) selects mode of operation.
Indicator lights (3) show which mode is being used. In the normal fire control mode, gun and tur-
ret travel is electrically controlled and hydraulically powered. Either of the gunner's handles (4)
or the commander's handle (5) control direction and rate of travel. Handles (4), (5) produce fire
control signals only if a palm switch (6) is pressed. When the commander's palm switch (7) is
pressed, the commander's handle (5) takes control away from gunner's handles (4).

In normal mode, gunner's and commander's control signals go to the ballistic computer (8). The
ballistic computer (8) also receives sensor inputs from gyroscopes, cant, crosswind, lead, and
range sensors at the same time. Both the handle signals and sensors produce control signals
that hold the gun and turret steady during hull motion. The stabilizing control signals drive valves
which send hydraulic pressure to the gun and turret actuators. When the gunner's handles (4) or
the commander's handle (5) is held still (with palm switch (6) or (7) pressed), the gyroscopes
continue to stabilize the gun and turret.

0016-1
 TM 9-2350-264-10-1 0016

FIRE CONTROL MODES - THEORY OF OPERATION - Continued

Normal mode should be used under all conditions unless a malfunction prohibits operation. Only
normal mode should be used for firing on the move. The following functions occur in normal
mode:
1. Range change entries into ballistic solution cause main gun movement, but GPS reticle
remains stabilized in elevation.
2. Automatic lead inserted for moving targets while reticle remains on target.
3. Azimuth fire inhibit.
4. Turret counterrotation for hull movements.
5. Ballistic computer manual self-test.
In normal mode, the Line-Of-Sight (LOS) system stabilizes the sight mirror in elevation and azi-
muth and Gun/Turret Drive (GTD) system controls the gun so it follows the mirror. The GTD sys-
tem also performs turret stabilization in azimuth only in normal mode. Ballistic solution changes
in this mode cause movement of gun and turret.

When FIRE CONTROL MODE - NORMAL light is lit and palm switches (6, 7) are pressed, the
ballistic computer will not perform boresight, zero, or Muzzle Reference Sensor (MRS) alinement
functions.
Emergency mode is a backup for normal mode. In emergency mode, the gunner's handles (4)
and commander's handle (5) will control gun and turret movement (without stabilization) for firing
with the GPS from a stationary vehicle.
When a change of ammunition or range causes a change in ballistic solution, the GPS reticle
will move. The sight must then be laid on the target using gunner's handles (4) or commander's
handle (5).
Emergency mode should be used for the ballistic computer boresight function.
Manual mode disables gunner's handles (4) and commander's handle (5). In manual mode,
hydraulic power is removed and hydraulic pump handle (9) and manual drive handle (10) must
be used for all gun or turret movement.

0016-2
 TM 9-2350-264-10-1 0016

FIRE CONTROL MODES - THEORY OF OPERATION - Continued

A lever on manual drive handle (10) is squeezed when manual drive handle (10) is grasped. The
manual drive handle (10) shuts off any hydraulic pressure to turret drive assembly. Manual drive
handle (10) will slip if gun strikes a solid object. The gun can be manually elevated if all hydrau-
lic power is lost. Hydraulic pump handle (9) is used for manual elevation.
In addition to the MANUAL position of FIRE CONTROL MODE switch, manual mode can be
selected with GUN/TURRET DRIVE switch on the loader's panel, or by pressing the lever on
manual drive handle (10).

END OF WORK PACKAGE

0016-3/4 blank
 TM 9-2350-264-10-1 0017

OPERATOR MAINTENANCE
STABILIZATION - THEORY OF OPERATION

NOTE
The stabilization function is performed separately for azimuth and elevation.
The azimuth stabilization system keeps turret pointed in same direction relative to the earth,
regardless of hull movement.
The elevation stabilization system keeps gun at same elevation relative to the earth regardless
of hull and turret movement.
The mirror in the top of the Gunner's Primary Sight (GPS) is controlled by Line-Of-Sight (LOS)
subsystem to stabilize scene relative to the earth. The Gun/Turret Drive (GTD) system stabilizes
gun using gyros on the gun and turret wall for sensors.

END OF WORK PACKAGE

0017-1/2 blank
 TM 9-2350-264-10-1 0018

OPERATOR MAINTENANCE
LEAD SYSTEM - THEORY OF OPERATION

The automatic lead system provides continuous lead to the day and night sight reticles for
engaging moving targets. The operator needs only to maintain the center of the reticle on the
center of the target. Automatic lead works only in normal mode, with gunner's handles or com-
mander's handle palm switches squeezed, and after range has been entered (either manually or
by lasing).
The ballistic computer receives target rate information from gunner's handles or commander's
handle motion. The computer calculates the lead offset and positions the Gunner's Primary
Sight (GPS) and Thermal Imaging System (TIS) reticles. The computer detects tank motion as
well as target motion.
When the gunner's handles and commander's handle are centered, the computer automatically
sets lead to zero. This is useful after slewing to a target.
For greatest firing accuracy, keep the center of the reticle on a specific point near the center of
the target. Gunner's handles and commander's handle motion in azimuth must reflect target rate
as closely as possible. If normal mode drift is not zeroed or reticle is allowed to drift on the tar-
get, accuracy will be greatly reduced.

END OF WORK PACKAGE

0018-1/2 blank
 TM 9-2350-264-10-1 0019

OPERATOR MAINTENANCE
TRIGGERS AND INHIBITS - THEORY OF OPERATION

Three devices in the turret fire the main gun or the coaxial machinegun. They are gunner's
handles triggers, commander's trigger, and hydraulic pump handle trigger. The emergency
MANUAL FIRING device (blasting machine) will fire main gun only.
The gunner's and commander's triggers are used whenever Gunner's Primary Sight (GPS) is
used as the sighting device in normal or emergency mode. When they are used, the fire control
system fire inhibit feature is automatically checking to make sure that sight and gun are alined
before it will allow weapon to fire. This is a major factor in the accuracy of the system; therefore,
these triggers should always be used for maximum firing accuracy.
The hydraulic pump handle trigger provides an emergency means of firing the main gun or the
coaxial machinegun when electrical power is still available on the turret. The trigger may be
used when sighting with Gunner's Auxiliary Sight (GAS) in stationary vehicle situations. If the
hydraulic pump handle is used while sighting with the GPS, either gunner's handles or com-
mander's handle palm switch must be depressed to insert the ballistic offset into gun. If the
palm switch is not depressed, the weapon will fire from this trigger but no ballistic offset will be in
the system.
The fire inhibit system monitors superelevation and rate of traverse. The gun will not fire if the
superelevation or tracking error is too great.
The emergency MANUAL FIRING device (blasting machine) is primarily for use when there is no
turret power and with the GAS as a sighting device. If the blasting machine is used when turret
power is on, it bypasses most of trigger circuitry and all fire inhibit functions. If blasting machine
is used while viewing through GPS, it is necessary to depress a palm switch while firing to
ensure that a ballistic solution is present in the fire control system.

END OF WORK PACKAGE

0019-1/2 blank
 TM 9-2350-264-10-1 0020

OPERATOR MAINTENANCE
GUNNER'S PRIMARY SIGHT (GPS) - THEORY OF OPERATION

The GPS (1) is normally the sighting instrument for main and coaxial guns. The eyepiece (2) for
the GPS periscope sight is at the gunner's station. An optical relay extension places a second
eyepiece (3) at the commander's station. Both crewmembers see the same view through the
sight.

The GPS (1) is electrically linked in elevation to main gun. The GPS (1) includes the Laser
Rangefinder (LRF) transceiver and the thermal night vision subsystem. The sight is protected
outside the turret by ballistic doors (4). These doors can be opened and closed from inside the
turret using handles (5) located above the GPS (1).

0020-1
 TM 9-2350-264-10-1 0020

GUNNER'S PRIMARY SIGHT (GPS) - THEORY OF OPERATION - Continued

The GPS (1) offers a range of daylight vision choices. The unity window (6) is used for unity
power (not magnified), close-in viewing. Unity window (6) field-of-view is 6° vertically and 18°
(30° with head movement) horizontally. Magnification powers of 3X and 10X can be selected on
MAGNIFICATION lever (7) when sighting through eyepieces (2, 3).

The fire control system displays three symbols in GPS eyepiece (2). The ready-to-fire symbol
(8), multiple return symbol (9), and malfunction F symbol (10) are generated in the Thermal
Imaging System (TIS).

The lines or marks in the reticle are called STADIA LINES. The lines running up and down are
for the range. The lines running across the reticle are used to determine target lead in the emer-
gency mode.

The ready-to-fire symbol (8) is a square in lower left part of view. The symbol will appear when
all following conditions exist:
1. A ballistic solution has been calculated by the computer.
2. GPS reticle is in position required by ballistic solution.
3. SAFE/ARMED lever in armed position.
4. Gunner's handles or commander's handle palm switch is depressed.

The ready-to-fire symbol (8) does not indicate that correct ammunition type has been selected
or that range display shows correct range. Those decisions must be made by the operator.

0020-2
 TM 9-2350-264-10-1 0020

GUNNER'S PRIMARY SIGHT (GPS) - THEORY OF OPERATION - Continued

The multiple return symbol (9) is a bar that appears above range display. The symbol will appear
when LRF receives more than one return. The range value displayed will be either first or last
return, depending on position of laser RANGE switch.
When multiple return symbol (9) appears, operator must decide whether displayed range
appears valid. If it does not, operator should lase on target again.
If the range value is flashing when the multiple return symbol (9) appears, the operator should
lase again.
The malfunction F symbol (10) indicates that one or more of the following fire control system
malfunctions exist:
1. The computer is self-testing.

2. The last computer manual test failed.

3. No laser rangefinder power.

4. Laser rangefinder failure.

5. Laser RANGE switch not in SAFE position when turret power turned on.

6. No thermal imaging system power.

7. Cant unit failure.

8. LOS electronics failure.

9. GTD system failure.

10. Crosswind sensor failure.

11. One or more critical turret cables not connected.

END OF WORK PACKAGE
0020-3/4 blank
 TM 9-2350-264-10-1 0021

OPERATOR MAINTENANCE
LASER RANGEFINDER (LRF) - THEORY OF OPERATION

The M1A1 tank is equipped with a LRF. The LRF may be an Eyesafe Laser Rangefinder (ELRF)
which is identified by a green eyesafe label next to the ELRF and a yellow caution label above
the ELRF.
The ELRF is operated in the same way as the non-eyesafe LRF. The difference between the two
is that the ELRF functions at a different wavelength which is safe for unaided viewing at any dis-
tance when conducting force on force operations. The ELRF is also safe using aided viewing
magnifying optics, such as binoculars, to within 61 yards (68 meters) of the tank.

WARNING

• Make sure you get laser safety training before you work near an operat-
ing laser.
• All people who work downrange of laser must wear industrial goggles.
Industrial goggles, NSN 4240-00-258-2054, are approved goggles and
will protect your eyes.
• You can be blinded if you look into a laser beam when you are not wear-
ing industrial goggles. Never aim LRF at personnel.
• If laser beam reflects from a flat, mirror-like surface, it can blind you
unless you are wearing industrial goggles. In some cases, viewing a dif-
fused surface reflection is also potentially hazardous.
• Wear industrial goggles, unless range has been cleared by range laser
safety officer.
The LRF can range on targets located 200 meters to 7990 meters from tank, with an accuracy of
± 10 meters. The LRF finds range to a target by sending out a pulse of light, and then measures
time until that light returns to receiver.
If range to target is between 200 meters and 4000 meters, range is automatically placed in the
ballistic solution. The range will appear in range display of Gunner's Primary Sight (GPS). If tar-
get is between 4010 meters and 7990 meters, range is not automatically placed in ballistic com-
puter. The actual range will appear in range display of GPS as flashing numbers.

0021-1
 TM 9-2350-264-10-1 0021

LASER RANGEFINDER (LRF) - THEORY OF OPERATION - Continued

WARNING
If LRF is being used to identify target location and LRF displays flashing 0000,
target location will be identified as your own tank position. Make sure target
location is correct. If not, request for fire will be on your own position.
There are four occasions when range display will show flashing 0000:
1. When all returns are less than 200 meters away.
2. When insufficient light is returned to receiver to calculate range.
3. When target is farther than 8000 meters away.
4. When laser RANGE switch is set to SAFE and LRF power circuit breaker (CB25) in turret
networks box or redesigned turret networks box if equipped, is set to OFF.
5. For M1028 canister (CAN) ammunition, if range is less than 200 meters, flashing 0000
will appear in range display of GPS and will remain for 2 seconds. After 2 seconds,
default range of 150 meters will be displayed in GPS and will be entered into computer
automatically to be used in the ballistic solution. If range is greater than 1100 meters, the
actual range will appear in range display of GPS as flashing numbers and will remain
flashing for 2 seconds. After 2 seconds, default range of 150 meters will be displayed in
GPS and will be entered into computer automatically to be used in ballistic solution.
Multiple returns will be received whenever laser beam strikes more than one object. When this
happens, multiple return bar will appear above range display in GPS. The range displayed will
be either first or last return, depending on position of range switch. Dense fog, dust clouds, or
smoke between LRF and target can cause false returns. Crewmembers should use range esti-
mation or battlesight procedures when there are conditions that might result in false returns.
The GPS day reticle pattern seen in eyepiece is generated in LRF unit. The LRF uses GPS day
optics at all times, even when LRF is used at night with Thermal Imaging System (TIS) optics.
Therefore, day ballistic door of GPS must remain open for day or night operations whenever
LRF is being used. The TIS reticle must be boresighted to day reticle at all times or LRF will not
aline with TIS reticle.

0021-2
 TM 9-2350-264-10-1 0021

LASER RANGEFINDER (LRF) - THEORY OF OPERATION - Continued

The gunner will use ARM LAST RTN position in most combat situations. The ARM LAST RTN
will provide correct range to target (1) if laser beam (2) in field of view is stopped by target (1).
Usually target (1) is larger than laser beam (2). Therefore, laser beam (2) will be reflected from
target (1) and last return will be correct range regardless of number of multiple returns from
other obstructions (3). The last return will be correct over 90% of the time in a combat environ-
ment.

The ARM 1ST RTN should be used when there are no obstacles between ranging tank and
intended target. ARM 1ST RTN can also be used for training targets such as panels or cloth-
type silhouettes. These targets (4) may get holes in them which will allow laser to pass through
and produce multiple returns. ARM 1ST RTN can also be used for training targets (5) that are
situated above ground level. The laser beam (2) can pass underneath them and produce mul-
tiple returns.

END OF WORK PACKAGE

0021-3/4 blank
 TM 9-2350-264-10-1 0022

OPERATOR MAINTENANCE
THERMAL IMAGING SYSTEM (TIS) - THEORY OF OPERATION

WARNING
The anti-reflective coating on all thermal optics in the gunner's primary sight are
coated with Thorium Fluoride (ThF4) which is slightly radioactive. The only
potential hazard involves ingestion or inhalation of this coating material. Dis-
pose of broken lenses IAW AR 385-10. Contact your LRPO for further informa-
tion prior to performing maintenance on subject items. CECOM holds the NRC
license (29-01022-14) for the thorium coating used on the gunner's primary
sight. The LRPO will notify AMCCOM NICP for disposition instructions.
The TIS provides M1A1 fire control system with night vision capability by presenting a thermal
scene in Gunner's Primary Sight (GPS) eyepiece. The TIS picture can be viewed at 3X or 10X
magnification.

The TIS Electronics Unit (EU) generates range and symbol data for GPS. The EU, Image Con-
trol Unit (ICU), and Power Control Unit (PCU) are on whenever turret power is on, i.e., eyepiece
symbols (range, ready to fire, malfunction) are generated whenever turret power is on. In 3X the
TIS generates corner symbols (1) outlining the 10X field of view. In 10X the TIS generates a
non-ballistic aiming square reticle (2).

0022-1
 TM 9-2350-264-10-1 0022

THERMAL IMAGING SYSTEM (TIS) - THEORY OF OPERATION - Continued

Target scene information is detected by heat sensors in TIS Thermal Receiver Unit (TRU). This
scene information is converted to electrical signals processed by EU and sent to Image Control
Unit (ICU) for display on a Cathode Ray Tube (CRT). The CRT image is then optically projected
into GPS eyepiece for view by gunner and commander.
The TIS uses range information from laser rangefinder, which operates through day channel
sight. Therefore, both day and night ballistic doors must be open during operation of TIS. With
day channel ballistic door open, daylight view will appear in GPS eyepiece unless FLTR/CLEAR/
SHTR switch is kept in SHTR position during TIS operation. The shutter also turns off day reticle
illumination.
The TIS uses same range information that day channel does. Because of this, TIS must be
alined/boresighted to main gun point of aim every time day reticle is boresighted or checked. It
is very critical to ensure that day and TIS reticles are not alined by superimposing one upon
other; correct procedure is to refer each reticle to same aim point on a distant target.
It is important that TIS picture is correctly adjusted. Target acquisition and identification can be
seriously degraded with an incorrectly adjusted TIS picture. Misuse of some controls on Image
Control Unit (ICU) can cause TIS picture to disappear.

END OF WORK PACKAGE

0022-2
 TM 9-2350-264-10-1 0023

OPERATOR MAINTENANCE
BALLISTIC COMPUTER - THEORY OF OPERATION

The ballistic computer uses stored (automatic inputs) and manual input data to improve gun aim-
ing accuracy. Automatic inputs include cant, crosswind, range and lead.
These automatic inputs entered from sensors may be manually overridden if desired. Manual
inputs to the ballistic computer include air temperature, ammunition temperature, ammunition
type, barometric pressure, Muzzle Reference System (MRS) (muzzle displacement), and gun/
turret position control inputs. Boresighting and zeroing fire control system (GPS) is accom-
plished by entering data and adjusting reticle alinement at the computer control panel (CCP) (1).
The ballistic computer has the capability of self-testing its automatic inputs and units of the fire
control system. The CCP (1), mounted to the gunner's right, has a protective cover that auto-
matically turns off the display when closed.

END OF WORK PACKAGE

0023-1/2 blank Change 3
 TM 9-2350-264-10-1 0024

OPERATOR MAINTENANCE
FORWARD LOOKING INFRARED (FLIR) - ARMY - THEORY OF OPERATION

The FLIR provides M1A1 fire control system with night vision capability by presenting a thermal
scene in Gunner's Primary Sight (GPS) eyepiece and FLIR Biocular Image Control Unit (BICU)
Cathode Ray Tube (CRT). The FLIR picture can be viewed at 3X, 6X, 13X, 25X, or 50X magnifi-
cation.
The Thermal Receiver Unit (TRU) generates range and symbol data for GPS and BICU. The
Inertial Navigation Unit (INU) and Power Conditioning Unit (PCU) are on whenever master
power is on. The FLIR displays a ballistic solution based on reticle position commands received
from the M1A1 fire control system with Far Target Location (FTL), vehicle location, and range to
target data. In 3X or 6X positions, the FLIR is operating in the optical Wide-Field-Of-View
(WFOV) with either a 1:1 zoom (3X) or a 2:1 zoom (6X) that generates corner symbols (1) outlin-
ing the Narrow-Field-Of-View (NFOV). In 13X position, the FLIR generates a ballistic aiming
square reticle (2) in the optical NFOV 1:1 zoom. When turned to 25X or 50X the FLIR is operat-
ing in an electronically zoomed NFOV 2:1 zoom (25X) or a 4:1 zoom (50X).

Heat sensors in FLIR TRU detect target scene information. This scene information is converted
to electrical signals processed by TRU and sent to BICU for display on a CRT. The CRT image is
then optically projected into GPS eyepiece for view by gunner or commander.
The FLIR uses range information from laser rangefinder, which operates through the day chan-
nel sight. Therefore, both day and night ballistic doors must be open during operation of FLIR.
With day channel ballistic door open, daylight view will appear in GPS's eyepiece unless FLTR/
CLEAR/SHTR switch is kept in SHTR position during FLIR operation. The shutter also turns off
day reticle illumination.
The FLIR uses same range information that day channel does. Because of this, FLIR must be
alined/boresighted to main gun point of aim every time day reticle is boresighted or checked. It
is very critical to ensure that day and FLIR reticles are not alined by superimposing one upon the
other. Correct procedure is to refer each reticle to the same aim point on a distant target.
It is important that FLIR picture is correctly adjusted. Target acquisition and identification can be
seriously degraded with an incorrectly adjusted FLIR picture. Misuse of some controls on TRU
or BICU can cause FLIR picture to disappear.

END OF WORK PACKAGE

0024-1/2 blank
 TM 9-2350-264-10-1 0025

OPERATOR MAINTENANCE
FIREPOWER ENHANCEMENT PROGRAM (FEP) THERMAL IMAGING
SYSTEM (TIS) - MARINE CORPS - THEORY OF OPERATION

The FEP TIS provides M1A1 fire control system with night vision capability by presenting a ther-
mal scene in gunner's primary sight (GPS) eyepiece and FEP TIS Biocular Image Control Unit
(BICU) Cathode Ray Tube (CRT). The FEP TIS picture can be viewed at 3X, 6X, 12X, 25X, or
50X magnification.
The Thermal Receiver Unit (TRU) generates range and symbol data for GPS and BICU. The
North Finding Module (NFM) and Power Conditioning Unit (PCU) are on whenever turret power
is on. The FEP TIS displays a ballistics solution based on reticle position commands received
from the M1A1 fire control system with Far Target Location (FTL), vehicle location, and range to
target data. In 3X or 6X positions, the FLIR is operating in the optical Wide-Field-Of-View
(WFOV) with either a 1:1 zoom (3X) or a 2:1 zoom (6X) that generates corner symbols (1) outlin-
ing the Narrow-Field-Of-View (NFOV). In 12X position, the FEP TIS generates a ballistic aiming
square reticle (2) in the optical NFOV 1:1 zoom. When turned to 25X or 50X the FEP TIS is
operating in an electronically zoomed NFOV 2:1 zoom (25X) or a 4:1 zoom (50X).

Heat sensors in FEP TIS TRU detect target scene information. This scene information is con-
verted to electrical signals processed by TRU and sent to BCIU for display on a CRT. The CRT
image is then optically projected into GPS eyepiece for view by gunner or commander.
The FEP TIS uses range information from laser rangefinder, which operates through the day
channel sight. Therefore, both day and night ballistic doors must be open during operation of
FEP TIS. With day channel ballistic door open, daylight view will appear in GPS's eyepiece
unless FLTR/CLEAR/SHTR switch is kept in SHTR position during FEP TIS operation. The shut-
ter also turns off day reticle illumination.
The FEP TIS uses same range information that day channel does. Because of this, FEP TIS
must be alined/boresighted to main gun point of aim every time day reticle is boresighted or
checked. It is very critical to ensure that day and FEP TIS reticles are not alined by superimpos-
ing one upon the other. Correct procedure is to refer each reticle to the same aim point on a dis-
tant target.
It is important that FEP TIS picture is correctly adjusted. Target acquisition and identification can
be seriously degraded with an incorrectly adjusted FEP TIS picture. Misuse of some controls on
TRU or BICU can cause FEP TIS picture to disappear.

END OF WORK PACKAGE

0025-1/2 blank
 TM 9-2350-264-10-1 0026

OPERATOR MAINTENANCE
REMOTE THERMAL SIGHT (RTS) .50 CAL
THERMAL SIGHT/DAY TV SYSTEM - THEORY OF OPERATION

The CWS (1) enables the tank commander to engage enemy targets with small caliber fire-
power. The RTS is the sighting instrument for the CWS machinegun. The eyepiece for CWS
sight is at the commander's weapon station. The RTS includes a day TV and thermal night
vision subsystem. RTS offers a range of vision choices. The tank commander can select the day
TV, the thermal system, or the GPS FLIR video (if a 2nd generation FLIR is installed in the
M1A1) to be viewed through the eyepiece. The sight provides an optical 3X magnification for
either the day sight or the thermal sight. The system provides 6X and 9X electronic magnifica-
tion for the day sight and the thermal sight when the ZOOM button (2) is pressed.

0026-1 Change 3
 TM 9-2350-264-10-1 0026

REMOTE THERMAL SIGHT (RTS) .50 CAL

THERMAL SIGHT/DAY TV SYSTEM - THEORY OF OPERATION - Continued

The RTS displays three symbols in the RTS eyepiece. The weapon reticle (.50 cal or M240)
selected, the sight selected, and self position information if the PLGR or DAGR are installed in
M1A1.
The lines or marks in the reticle are called STADIA LINES. The lines running up and down are
for range. The lines running across the reticle are used to determine target lead.

END OF WORK PACKAGE

Change 3 0026-2
 TM 9-2350-264-10-1 0027

OPERATOR MAINTENANCE
COMMANDER'S WEAPON STATION REMOTE THERMAL
SIGHT (CWS RTS) - THEORY OF OPERATION

The Commander's Weapon Station Thermal Sight Module (CWS TSM) (1) provides tank com-
mander with night vision capability by presenting a thermal scene in the Commander's Weapon
Station Display Control Module (CWS DCM) (2). The CWS TSM picture can be viewed at 3X,
6X, or 9X magnification.
The CWS DCM (2) is on whenever master power is on. CWS TSM (1) is turned on and off from
the CWS DCM brightness/control knob. In the 3X position the CWS TSM (1) is operating in the
optical Field-Of-View (FOV) in a 1:1 zoom (3X). When turned to 6X or 9X the CWS TSM (1) is
operating in an electronically zoomed FOV 2:1 zoom (6X) or a 3:1 zoom (9X).
Heat sensors in CWS TSM (1) detect target scene information. This scene information is con-
verted to electrical signals processed by the TSM and displayed on the CWS DCM (2).
Every time the M2 or M240 machinegun is installed in the CWS, the TSM and day sight must be
alined/boresighted to the gun point of aim.

END OF WORK PACKAGE

0027-1/2 blank
 TM 9-2350-264-10-1 0028

OPERATOR MAINTENANCE
COMMANDER'S WEAPON STATION (CWS) DAY SIGHT - THEORY OF
OPERATION

The Commander's Weapon Station Display Control Module (CWS DCM) (1) provides tank com-
mander with day vision capability by presenting a day TV picture in the CWS DCM eyepiece (2).
The CWS day sight picture can be viewed at 3X, 6X, or 9X magnification.
The CWS DCM (1) is on whenever master power is on. The day TV is turned on by the bright-
ness control knob on CWS DCM (1). Once turned on, the day TV image should be present in
the DCM within two seconds. In the 3X position, the CWS day sight is operating in the optical
Field-Of-Vision (FOV) in a 1:1 zoom (3X). When turned to 6X or 9X, the CWS day sight is oper-
ating in an electronically zoomed FOV 2:1 zoom (6X) or a 3:1 zoom (9X).
The CWS day sight uses a high resolution day TV. This scene information is converted to electri-
cal signals processed by the day TV and sent for display on CWS DCM (1).
Every time the M2 or M240 machinegun is installed in the CWS, the TSM and day sight must be
alined/boresighted to the gun point of aim.

END OF WORK PACKAGE

0028-1/2 blank
 TM 9-2350-264-10-1 0029

OPERATOR MAINTENANCE
FAR TARGET LOCATION (FTL) - ARMY - THEORY OF OPERATION

WARNING
Tank commander must confirm target heading and target position prior to using
grid information for call for fire.

NOTE
Inertial Navigation Unit (INU) alinement can take up to 5 minutes and the tank
and turret should not be moved during INU alinement.
The Forward Looking Infrared Receiver Far Target Location (FLIR FTL) provides the M1A1 self-
position (POS) (1), provided by the Precision Lightweight GPS Receiver (PLGR) or Defense
Advanced GPS Receiver (DAGR); range to target (2), provided by the laser rangefinder; and tar-
get (TGT) location (3), provided by the INU.
The position data used in the FTL is as follows:
1. PLGR/DAGR position accuracy: ± 16 meters (±52.49 feet), with crypto load.
2. Target position accuracy: 35 meters (114.83 feet) Circular Error Probability (CEP) with
maximum target distance of 7,990 meters (4.96 miles).
3. 35 meter (114.83 feet) CEP: 50% of FTL target solutions will fall within a 35 meter
(114.83 feet) radius at 7,990 meters (4.96 miles).

0029-1
 TM 9-2350-264-10-1 0029

FAR TARGET LOCATION (FTL) - ARMY - THEORY OF OPERATION - Continued

The INU using PLGR/DAGR and Eyesafe Laser Rangefinder (ELRF) information provides the
tank commander/gunner the capability to locate far target locations. The INU powers up when
tank master power is applied and the Redesigned Turret Networks Box (RTNB) circuit breakers
are set to on. The INU requires approximately 5 minutes after tank master power is applied to
complete initialization. If tank or turret is moved within the first 5 minutes after tank master
power is applied, the INU will do an IN MOTION ALIGNMENT which will take several minutes
longer than a stationary initialization. If the Horizontal Field of Merit (HFOM) (4) is greater than
5, the vehicle does not have an accurate position for the FTL and the bearing display (5) will not
appear. The INU uses range data provided by the ELRF and turret direction and tank position
data provided by the PLGR/DAGR to calculate the far target location. Date time group of when
the ELRF was fired is recorded and made available in the GPS eyepiece and BICU CRT along
with location data. If the target location is less than 200 meters (656.17 feet) or greater than
7,990 meters (4.96 miles), no target location data will be provided.

END OF WORK PACKAGE

0029-2
 TM 9-2350-264-10-1 0030

OPERATOR MAINTENANCE
FAR TARGET LOCATION (FTL) - MARINE CORPS - THEORY OF OPERATION

WARNING
Tank commander must confirm target heading and target position prior to using
grid information for call for fire.

NOTE
North Finding Module (NFM) alinement can take up to 4.4 minutes and the tank
and turret cannot be moved during NFM alinement.
The Firepower Enhancement Program (FEP) Thermal Imaging System (TIS) FTL provides the
M1A1 self-position (POS) (1), provided by the Precision Lightweight GPS Receiver (PLGR);
range to target (2), provided by the Eyesafe Laser Rangefinder (ELRF); and target (TGT) loca-
tion (3), provided by the NFM.
The position data used in the FTL is as follows:
1. PLGR position accuracy: ± 16 meters (±52.49 feet) (with crypto load).
2. Target position accuracy: 35 meters (114.83 feet) Circular Error Probability (CEP) with
maximum target distance of 7,990 meters (4.96 miles).
3. 35 meter (114.83 feet) CEP: 50% of FTL target solutions will fall within a 35 meter
(114.83 feet) radius at 7,990 meters (4.96 miles).

0030-1
 TM 9-2350-264-10-1 0030

FAR TARGET LOCATION (FTL) - MARINE CORPS - THEORY OF

OPERATION - Continued

The NFM using PLGR and ELRF information provides the tank commander/gunner the capabil-
ity to locate far target locations. The NFM powers up when tank master power is applied and the
TNB circuit breakers are set to on. The NFM requires approximately 5 minutes after tank master
power is applied to complete initialization. If tank or turret is moved within the first 5 minutes
after tank master power is applied, the NFM needs to complete the initialization process as soon
as possible. NFM will perform a complete initialization at the first opportunity that the tank and
turret remain stationary for 5 minutes. If the Horizontal Field of Merit (HFOM) (4) is greater than
5, the vehicle does not have an accurate position for the FTL and the bearing display (5) will not
appear when the commander or gunner operates the ELRF. The NFM uses range data provided
by the ELRF and turret direction and tank position data provided by the PLGR to calculate the
far target location. Date time group of when the ELRF was fired is recorded and made available
in the GPS eyepiece and BICU CRT along with location data. If the target location is less than
200 meters (656.17 feet) or greater than 7,990 meters (4.96 miles), no target location data will
be provided.

END OF WORK PACKAGE

0030-2
 TM 9-2350-264-10-1 0031

OPERATOR MAINTENANCE
MUZZLE REFERENCE SENSOR (MRS) - THEORY OF OPERATION

The MRS (1) is used to determine amount of change in main gun tube resulting from uneven
heating and cooling. The MRS (1) provides the computer with a relationship (angle) (2) between
Gunner's Primary Sight (GPS) (3) and end of main gun tube. This is established at time of
boresighting, see Vol 3, WP 0516 and refined at zeroing, see Vol 3, WP 0516. Additional heating
and cooling will cause deviation from established boresight. The MRS (1) allows gunner to
quickly enter changed information into the computer and correct lay of main gun.
The MRS (1) should be checked before resuming fire after a period of nonfiring and updated as
necessary. It should be checked frequently during conduct of fire to ensure alinement remains
correct, see Vol 3, WP 0516. MRS (1) part number 12960957-2 contains a battery that illumi-
nates the MRS reticle. This feature makes it possible to aline the MRS (1) with the sights during
limited visibility and at night.

END OF WORK PACKAGE

0031-1/2 blank Change 1
 TM 9-2350-264-10-1 0032

OPERATOR MAINTENANCE
BILGE PUMP - THEORY OF OPERATION

The tank is provided with a hydraulically driven, hull mounted bilge pump (1) for use when water
enters the hull and must be removed. Bilge pump (1) is driven by either the engine hydraulic
pump or the electric auxiliary hydraulic pump. Bilge pump (1) is located on the hull floor in front
of the hull ammunition compartment (2) and has an outlet (3) located on the right side of the
hull. Bilge pump (1) is capable of pumping 115 gallons (435.3 liters) per minute for up to 100
hours continuously. Bilge pump is (1) is operated by placing BILGE PUMP switch (4) on driver's
master panel (5) to on.

END OF WORK PACKAGE

0032-1/2 blank
 TM 9-2350-264-10-1 0033

OPERATOR MAINTENANCE
BORESIGHT AND SCREENING - THEORY OF OPERATION

In combat, it is impossible to fire accurately without accurate sight adjustment. Boresighting pro-
vides a basis for all sight (1) adjustments and establishes a definite relationship between the
axis of the bore, gun, and the sights. The Muzzle Boresight Device (MBD) is used to direct the
main gun (2) onto the aiming point. When the tank is boresighted at a known range the fire con-
trol system provides system parallax corrections to the Gunner's Primary Sight (GPS) and Ther-
mal Imaging Sight (TIS) at all ranges.

The MBD method of boresighting the main gun (2) is preferred. Since tank cannons are long
and heavy, they droop slightly due to gravitational pull. The MBD measures the axis of the gun
at the muzzle end; therefore, muzzle boresighting compensates for this droop and reliably pre-
dicts where rounds will impact.
To ensure tanks can fire accurately using a fleet zero (CCF) method of calibration, a screening
test is conducted. Live-fire screening of the main gun (2) consists of boresighting and inputting
CCF's only; the zeroing process is no longer performed when MBDs are available.
In combat, boresight before anticipated combat and after extensive movement (crews should
boresight frequently in combat, as directed by the tactical situation). Boresighting is not recom-
mended to accommodate minor temperature changes or other environmental changes. If a loss
of accuracy is perceived while firing, the fire control system should be checked for faults and
boresighted at the earliest opportunity.

END OF WORK PACKAGE

0033-1/2 blank Change 3
 TM 9-2350-264-10-1 0034

OPERATOR MAINTENANCE
SMOKE PRODUCING SYSTEMS - THEORY OF OPERATION

WARNING

• Do not remain in smoke cloud more than 5 minutes without use of pro-
tective mask and skin protection. More than 5 minutes of unprotected
exposure to smoke cloud can cause temporary illness and eye and skin
irritation.
• Do not turn on SMOKE GENERATOR switch if tank is using MOGAS or
JP4 for fuel. The MOGAS or JP4 will cause explosions instead of smoke
and could kill you or damage your tank.

NOTE
If using JP8, smoke will not be produced.
The tank has two independent smoke producing systems: smoke generating system and smoke
grenade launcher system.
The smoke generating system is incorporated into exhaust system. Fuel is sprayed into the rear
section of the exhaust duct and vaporized. When exhausted to air, fuel condenses and creates a
smoke cloud. The smoke generator fuel pump will only operate when engine is running. There-
fore, smoke generator will not operate when engine is not running. This prevents possibility of
fire and prevents fuel nozzles from becoming clogged. The smoke generator is operated from
Driver's Master Panel (DMP) (1) by pulling out and setting the SMOKE GENERATOR switch (2)
to ON. Light (3) will light while the smoke generator is operating.

The smoke grenade launcher system is mounted on exterior of turret and controlled from the
commander's panel (4) or the Upgraded Tank Commander's Panel (UTCP) (5), if equipped. On
vehicles equipped with tank commander's panel (4), three (or four) grenades will fire from both
dischargers (6,7) when the READY/SAFE switch (8) is held in the READY position and SALVO 1
pushbutton (9) is pressed. Three (or four) grenades will fire in the same manner when SALVO 2
pushbutton (10) is pressed. Pressing both pushbuttons (9,10) simultaneously, will fire all 12 (or

0034-1
 TM 9-2350-264-10-1 0034

SMOKE PRODUCING SYSTEMS - THEORY OF OPERATION - Continued

16) grenades. On vehicles equipped with the UTCP (5), pressing the SAL 1 pushbutton (11)
simultaneously with the RDY pushbutton (12), three grenades are fired from each discharger (6,
7). When SAL 2 pushbutton (13) is pushed simultaneously with the RDY pushbutton (12), it dis-
charges three grenades from each discharger (6, 7). If both pushbuttons (11, 13) are pushed at
same time with the RDY pushbutton (12), all 12 grenades are discharged.

END OF WORK PACKAGE

0034-2
 TM 9-2350-264-10-1 0035

OPERATOR MAINTENANCE
NUCLEAR, BIOLOGICAL, AND CHEMICAL SYSTEM (NBC) - THEORY OF
OPERATION

The NBC main system performs several functions. It warns crew when it detects nuclear or
chemical contaminants. It provides crew compartment and each crew station's M42A1 mask (1),
or if equipped, M51 mask (1.1) and Air Cooled Vest (ACV) (2) with clean, contaminant-free,
adjustable temperature air to aid survivability during NBC or high heat stress environment. It
also integrates an existing clean, contaminant-free, backup M13A1 air supply system for each
crewman's M42A1 mask (1). The flexible air duct (3) from crewman's M42A1 mask (1) is
plugged into Armor Quick-Disconnect (AQD) (4) on the filter of M42A1 mask (1) or Hose
Assembly Vehicle Connector (HAVC) (3.1), if equipped with M51 mask (1.1). The ACV (2) is
plugged into socket (5) at each crew station. If backup system is in use, socket (5) is kept
capped with cap (6).

The crew compartment will be pressurized by NBC main system when engine is running, system
is on and the tank is in combat configuration. This positive air pressure will vent gun smoke to
outside and also prevent outside air from entering. Pressurization is possible when all hatches
are closed, a round is in the main gun, the coaxial machinegun is installed, front drain valve is
closed, and all periscopes are installed. When all these conditions are met, the tank is in combat
configuration.
There are five configurations of the Tank Commander's Panel (TCP). Part numbers 9376322
and 9377879 will start NBC system when engine starts unless Turret Networks Box (TNB) circuit
breaker CB3 is turned off. Part number 12549797, 12549797-2 and 12549797-3 will not start
NBC system automatically.

0035-1 Change 4
 TM 9-2350-264-10-1 0035

NUCLEAR, BIOLOGICAL, AND CHEMICAL SYSTEM (NBC) - THEORY OF

OPERATION - Continued

If equipped with TCP with part number 12549797-3, NBC main system will be shut down auto-
matically in 2 minutes when OVERHEAT SPONSON IN warning light (7) or OVERHEAT
SPONSON OUT warning light (8) illuminates if not turned off manually using NBC MODE MAIN
switch (9). If equipped with Upgraded Tank Commander's Panel (UTCP) (10) with part number
12473169, NBC main system will be shut down automatically in 2 minutes when SPONSON
OVHT IN warning light (11) or SPONSON OVHT OUT warning light (12) illuminates if not turned
off manually using NBC MAIN pushbutton (13).

With engine running, the NBC main system will come on when GUN SELECT switch (14) on
GPS panel (15) is set to COAX unless NBC main system is disabled.

Change 4 0035-2
 TM 9-2350-264-10-1 0035

NUCLEAR, BIOLOGICAL, AND CHEMICAL SYSTEM (NBC) - THEORY OF

OPERATION - Continued

The NBC main system can be turned on or off manually by using the NBC MODE MAIN switch
(9) or the NBC MAIN pushbutton (13) on the UTCP (10). If the engine is running and NBC main
system is off, the loader can turn the system on to exhaust smoke and fumes from the turret by
setting TURRET BLOWER, or if equipped, NBC MAIN switch (16) on loader's panel (17) to ON
unless NBC main system is disabled. He can also turn the NBC main system off, if he turned it
on, by setting TURRET BLOWER, or if equipped, NBC MAIN switch (16) to off. The NBC main
system will go off automatically whenever the engine is stopped.

A backup system is available for use when the engine is stopped or when OVERHEAT
SPONSON IN (7), FILTER CLOGGED (18), or OVERHEAT SPONSON OUT (8) NBC WARN-
ING lights come on. On the UTCP (10), use the NBC backup system if NBC audible tone alert is
heard in the vehicle intercom and NBC WARN lights SPONSON OVHT IN (11) or SPONSON
OVHT OUT (12) come on, or NBC WARN light FILT CLOG (19) comes on.

0035-3 Change 4
 TM 9-2350-264-10-1 0035

NUCLEAR, BIOLOGICAL, AND CHEMICAL SYSTEM (NBC) - THEORY OF

OPERATION - Continued

If Redesigned Hull Networks Box (RHNB) equipped, use the backup system if OVERHEAT
SPONSON INPUT (20) or OVERHEAT OUTPUT (21), and NBC FILTER (22) CLOGGED
WARNING messages appear in RHNB Status Message Display (SMD).

Backup system can be turned on or off by using the NBC MODE BACKUP switch (23), or NBC
BACK pushbutton (24) on UTCP (10). A CREW PRESS LOW light (25), or PRES LOW light (26)
on UTCP (10), comes on when air pressure is low in the crew compartment. You can either stay
on the NBC main system or switch over to the backup system when engine is running. When
NBC main system is on, air temperature is adjusted warmer or cooler using AIR TEMP control
(27).

END OF WORK PACKAGE

Change 4 0035-4
 TM 9-2350-264-10-1 0036

OPERATOR MAINTENANCE
EXTERNAL AUXILIARY POWER UNIT (EAPU) - THEORY OF OPERATION

The 2 kilowatt (kW) EAPU (1), or 3kW EAPU (2), is a self-contained, diesel-powered, auxiliary
electrical power supply designed to provide sustaining electric power to the vehicle batteries
whenever electrical power to tank systems is required and the powerpack is not running. Both
versions of EAPU are powered by a single-cylinder, air-cooled diesel engine driving a 28 V dc
generators producing an output of 78 to 110 amperes (amps). Both versions of EAPU are simi-
lar in size and functionality. Some major differences between the 2kW EAPU (1) and 3kW EAPU
(2), beyond the more powerful generator in the 3kW EAPU (2), consist of additional sound
dampening material, redesigned air intake system, and separate 12 V dc 20 amp power outlet
used for charging laptop computers and smaller communications equipment.
Engine speed on the EAPU is controlled by its engine control unit. Normal speed when providing
power to the batteries is between 2850-3150 rpm. Water in fuel/water separator, low oil pres-
sure, high current output, or high voltage output are conditions monitored by the engine control
unit. If the fuel/water separator is not serviced as required or low oil pressure, high current out-
put, or high voltage output conditions are detected, the engine control unit will shut the EAPU
down.

The EAPU engine is normally started electrically using an electric starter and the tank batteries,
controlled from either the local control panel on the EAPU, or the remote control panel located in
the loader's station. When necessary, the EAPU can be started manually using the manual fuel
control, compression release, and pulley/rope. A NATO receptacle (3) is located at the rear of
the EAPU. The NATO receptacle (3) can be used to provide auxiliary power to onboard vehicle
tools and to various wheeled vehicles. The NATO connector is not to be used to slave start
vehicles. Damage to equipment will occur.

END OF WORK PACKAGE

0036-1/2 blank Change 3
 TM 9-2350-264-10-1 0037

OPERATOR MAINTENANCE
MISSILE COUNTERMEASURE DEVICE (MCD) - THEORY OF OPERATION

WARNING

• MCD radiates infrared (IR) energy from the front side during operation.
Unprotected exposure to front side during operation can cause burns to
skin or eyes.
• MCD gets extremely hot during operation. MCD will remain dangerously
hot for some time after being shut down. Touching any part of the MCD
can cause injury when MCD is hot.
• Do not look at front side of MCD when MCD is in operation from closer
than 12 feet (3.7 m).
• Do not touch MCD while in operation without protective equipment.
• Do not touch MCD after operation until MCD has cooled to a safe level.
Wait at least 10 minutes and then test before touching.
When installed, the MCD (1) is mounted on shock absorbers on the tank turret. Power is sup-
plied from the remote control box assembly (2). A harness from the remote control box assembly
(2) plugs into the MCD (1). If the MCD (1) is not installed, the harness plugs into the MCD har-
ness cover box (3) and the two utility outlets (4, 5) on it become usable.

0037-1
 TM 9-2350-264-10-1 0037

MISSILE COUNTERMEASURE DEVICE (MCD) - THEORY OF

OPERATION - Continued

The remote control box assembly (2) MCD CONTROL UTILITY OUTLET switch (6) turns on
either the MCD (1) or the utility outlets (4, 5) depending on where the harness is connected.
When the switch (6) is in the ON position, the MCD CONTROL UTILITY OUTLET lamp (7) lights
to indicate that power is on. PUSH TO TEST switch (8) is used to check lamp (7).

When turned on, the MCD (1) radiates infrared energy which can burn eyes and skin if precau-
tions are not followed. The MCD (1) becomes extremely hot during operation and precautions
must be followed to prevent injury.
When the MCD (1) is operating it radiates a beam in a range of the spectrum that confuses cer-
tain missiles aimed at your vehicle causing them to be diverted away from you.

END OF WORK PACKAGE

0037-2
 TM 9-2350-264-10-1 0038

OPERATOR MAINTENANCE
DRIVER'S HATCH INTERLOCK (DHI) - THEORY OF OPERATION

The DHI installed in the M1A1 tank provides for driver's safety during opened hatch operations
while not impairing fightability of the tank. The DHI inhibits operation of the Gun/Turret Drive
(GTD) system when the driver's hatch is opened to prevent the commander or gunner from inad-
vertently moving the gun or turret and potentially injuring or killing the driver. To maintain the
tank's fightability, an override capability is available at the Commander's Alert Panel (CAP) (1) to
override the inhibits. The override capability is also provided, as a backup function, to the gun-
ner's station from the commander.
A switch (2) located in the driver's hatch lifting mechanism (3) sends signals to the CAP (1), indi-
cating either that the hatch is opened (not closed and latched) or that the hatch is closed. If the
signal indicates that the hatch is opened, the CAP (1) then sends a signal to the Turret Networks
Box (TNB) and the TNB uses this information to inhibit GTD operation.
If the gunner depresses the palm switches (4) on the Gunner's Control Handle (GCH) (5) while
the hatch is opened, or if the hatch is opened while the GCH palm switches (4) are depressed,
the TNB will inhibit power to the GTD and the gunner cannot operate the GTD.
The DRIVER'S HATCH OPEN indicator light (6) on the CAP (1) illuminates to alert the com-
mander that the driver's hatch is opened and the GTD is inhibited.

0038-1
 TM 9-2350-264-10-1 0038

DRIVER'S HATCH INTERLOCK (DHI) - THEORY OF OPERATION - Continued

WARNING
Do not override inhibit without first notifying driver and determining that driver is
safely out of the way of any gun/turret movements. Driver could be injured or
killed if turret or gun is moved and driver is not safely out of the way of any gun/
turret movements.
The commander can override the inhibit at the CAP (1) by depressing the palm switch (7) on the
commander's handle (8) and moving the OPEN HATCH OVERRIDE switch (9) to the ON posi-
tion. The G/T DRIVE ACTIVE HATCH OPEN indicator (10) on the DAP (11) will illuminate when
the hatch is opened and the GTD is active.
The override capability can only be handed off to the gunner's control handles from the com-
mander's handle by depressing the commander's palm switch (7) and moving the OPEN HATCH
OVERRIDE switch (9) to the ON position. While holding the commander's palm switch (7) to
maintain override, depress the gunner's palm switches (4), and release the commander's palm
switch (7).

0038-2
 TM 9-2350-264-10-1 0038

DRIVER'S HATCH INTERLOCK (DHI) - THEORY OF OPERATION - Continued

WARNING
If GUN/TURRET DRIVE INHIBIT FAULT indicator light (12) is illuminated on the
CAP (1), do not operate GTD without first notifying driver and determining that
driver is safely out of the way of any gun/turret movements. Driver could be
injured or killed if turret or gun is moved and driver is not safely out of the way
of any gun/turret movements.

0038-3
 TM 9-2350-264-10-1 0038

DRIVER'S HATCH INTERLOCK (DHI) - THEORY OF OPERATION - Continued

If a fault is detected, the GUN/TURRET DRIVE INHIBIT FAULT indicator light (12) will illuminate
on the CAP (1) and/or the G/T DRIVE INHIBIT FAULT indicator light (13) will illuminate on the
Driver's Instrument Panel (DIP) (14), and the DHI will be disabled. The TNB will not inhibit power
to the GTD, and both the commander and the gunner can operate the GTD.

END OF WORK PACKAGE

0038-4
 TM 9-2350-264-10-1 0039

OPERATOR MAINTENANCE
ENHANCED INFORMATION SYSTEM PLUS (EIS+) - THEORY OF OPERATION

The EIS+ is an applique set of hardware and software attached to the tank with digital communi-
cations capability. It consists of a Computer Processing Unit (CPU) (1), when equipped with
Computer Set, Digital AN/UYK-128 (V), or CPU (2) if equipped with Computer Set, Digital
AN/UYK-128D (V)3. Included with both systems is the Display Unit (DU) (3), and keyboard (4).
The Movement Tracking System (5) is found on vehicles equipped with Computer Set, Digital
AN/UYK-128 (V), or the BFT2 MT-2011 Satellite Transceiver (6) on vehicles equipped with Com-
puter Set, Digital AN/UYK-128D (V)3, and Force XXI Battle Command Brigade and Below
(FBCB2) software. Power to operate the applique hardware is available from the Turret Networks
Box (TNB) or, if equipped, Redesigned Turret Networks Box (RTNB) utility outlet. Applique hard-
ware is powered up IAW TM 11-7010-326-10 when equipped with Computer Set, Digital
AN/UYK-128 (V), or IAW TM 11-7010-554-10 when equipped with Computer Set, Digital
AN/UYK-128D (V)3 CPU (2).
The EIS+ provides the tank commander the capability to digitally transmit and receive reports,
overlays, free text messages, field orders, and Situational Awareness (SA) data between other
elements and units. When operating, the EIS+ is capable of processing classified data up to
SECRET level.
The DU (3) and keyboard (4) are the commander's primary interface with the EIS+ and are com-
mon between both EIS+ configurations. The DU (3) is capable of displaying reports and over-
lays as well as a full color map with Military Grid Reference System (MGRS) gridlines. The
keyboard (4) enables the commander to input data and control FBCB2 operations. On vehicles
equipped with Computer Set, Digital AN/UYK-128 (V) EIS+ uses the MTS (5) to transmit and
receive digital messages via satellite. On vehicles equipped with Computer Set, Digital AN/UYK-
128D (V)3 EIS+ uses BFT2 MT-2011 Satellite Transceiver (6) to transmit and receive digital
messages.

0039-1 Change 4
 TM 9-2350-264-10-1 0039

ENHANCED INFORMATION SYSTEM PLUS (EIS+) - THEORY OF

OPERATION - Continued

Global Positioning System (GPS) time provided by the Precision Lightweight GPS Receiver
(PLGR) (7) or, if equipped, Defense Advanced GPS Receiver (DAGR) (8) is used to time stamp
messages. Tank position data provided by PLGR/DAGR is used to process position reports to
develop the friendly SA database.

FBCB2 must be shut down IAW TM 11-7010-326-10 when equipped with Computer Set, Digital
AN/UYK-128 (V), or IAW TM 11-7010-554-10 when equipped with Computer Set, Digital
AN/UYK-128D (V)3 before tank power is cut off, otherwise FBCB2 data may become corrupted.

A complete subsystem description and detailed operating procedures are contained in Equip-
ment Operator's Manual, Force XXI Battle Command Brigade and Below (FBCB2), Digital Com-
puter Set, AN/UYK-128, TB 11-7010-326-10.

Change 4 0039-2
 TM 9-2350-264-10-1 0039

ENHANCED INFORMATION SYSTEM PLUS (EIS+) - THEORY OF

OPERATION - Continued

END OF WORK PACKAGE

0039-3/4 blank Change 4
 TM 9-2350-264-10-1 0040

OPERATOR MAINTENANCE
TANK INFANTRY PHONE (TIP) - THEORY OF OPERATION

The TIP (1) is a fifth full function crew station (2) in the tank's VIC-3 intercom system. The hand-
set (3) is on the end of a 25 ft extension cable (4) so that the user can operate this station away
from the tank by pressing the Push-to-Talk (PTT) button (5) on the handset (3). The TIP (1) can
be operated with the door of the box closed, having the extension cable (4) pass through the
slot (6) on the bottom of the box. There is a drain (7) in the bottom of the box to allow water to
drain from the TIP (1). Turning handle (8) counterclockwise and clockwise allows TIP door (9) to
be opened and latched closed.

END OF WORK PACKAGE

0040-1/2 blank
 TM 9-2350-264-10-1 0041

OPERATOR MAINTENANCE
POWER DISTRIBUTION BOX (PDB) - THEORY OF OPERATION

The PDB (1) provides additional utility jacks in the turret. There are seven manual circuit break-
ers on the PDB (1). The breakers are: one 35 amp, two 15 amp, one 10 amp, and three 6 amp.
The utility jacks on the PDB (1) have the same configuration as other utility jacks in the vehicle.
A decal (2) shows the amperage associated with each utility jack.
The 6, 10, and 15 amp utility jacks are controlled by a toggle switch (3) for each circuit breaker.
The 35 amp circuit breaker (4) needs to be depressed to reset.

END OF WORK PACKAGE

0041-1/2 blank
 TM 9-2350-264-10-1 0042

OPERATOR MAINTENANCE
REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - THEORY OF OPERATION

The RVSS, consisting of the Camera Control Unit (CCU) (1), Driver's Video Display (DVD) (2),
and the Taillight Camera Assembly (TCA) (3), is designed to enhance tank crew situational
awareness by providing the driver the capability of monitoring activity behind the hull of the tank.
This is accomplished through the use of an unmagnified, fixed-focus thermal camera. Provided
with a Horizontal Field-of-View (HFOV) of 54° and a Vertical Field Of View (VFOV) of 40°, the
driver is able to identify targets, i.e., man-sized infantry targets, from 6 to 225 meters.

0042-1 Change 4
 TM 9-2350-264-10-1 0042

REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - THEORY OF

OPERATION - Continued

Power to the RVSS is provided through the utility outlet (UTIL OUT) jack located on the Rede-
signed Hull Networks Box (RHNB). RVSS operates on 28 V dc vehicle-supplied power, with a
maximum amount of power consumption of 35 watts. The LED indicators are Night Vision Imag-
ing System (NVIS) compatible and the switches are compatible with Nuclear, Biological, Chemi-
cal (NBC) equipment (gloves).

END OF WORK PACKAGE

Change 4 0042-2
 TM 9-2350-264-10-1 0042.1

OPERATOR MAINTENANCE
COUNTER RCIED ELECTRONIC WARFARE II (CREW II) SYSTEM THEORY OF
OPERATION

The CREW II system is an Electronic Warfare (EW) countermeasures set that provides continu-
ous threat detection against a wide range of high and low power Radio Controlled Improvised
Explosive Devices (RCIEDs). The system combines active and responsive EW components to
counter both the low-power and high-power classes of RCIED threats. The active subsystem is
used to counter low-power threats and the responsive subsystem is used to counter high-power
threats. The system can, at the same time, counter a variety of threats over a broad frequency
range. Upon detection of a threat emitter, the active subsystem will generate the appropriate
jamming signal. CREW II consists of three major components, the primary unit (1), the Remote
Control Unit (RCU) (2), and the Personal Digital Assistant (PDA) (3).

The primary unit (1) is mounted in the turret bustle rack. It consists of an AN/VLQ-12 Counter-
measures Set that is mounted in an armored enclosure, and an Radio Frequency (RF) antenna
mounted to the top of the enclosure. The primary unit provides threat detection and generates
the EW countermeasures.

The RCU (2) is located inside the crew compartment on the turret wall beside the loader's panel.
The RCU provides the crew the ability to turn the system on and off from inside the turret when
the main power switch on the primary unit is set to remote. It also monitors the status of the sys-
tem.

0042.1-1 Change 1
 TM 9-2350-264-10-1 0042.1

COUNTER RCIED ELECTRONIC WARFARE II (CREW II) SYSTEM THEORY OF

OPERATION - Continued
The PDA (3) is located inside the crew compartment on the wall above the loader's tray. The
PDA (3) provides feedback when the system detects EW attacks and what countermeasures
were employed. The PDA (3) is not required to operate the CREW II system.

The CREW II system is operated from the loader's station using the RCU (2) and PDA (3). Turret
power must be on, and the turret utility outlet must be powered up for the CREW II system to
operate.

END OF WORK PACKAGE

Change 1 0042.1-2
 TM 9-2350-264-10-1 0042.2

OPERATOR MAINTENANCE
STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF
OPERATION

The SCWS (1) is an electrically powered, fully stabilized weapon platform that is capable of
engaging moving and stationary targets from a moving platform out to 2000 meters when the
primary weapon, the M2 .50 caliber M48 turret type machine gun is mounted, or 900 meters
when the alternate weapon, the 7.62 mm M240 machinegun is mounted. The .50 Cal Day
TV/Thermal Sight System, also known as the Remote Thermal Sight (RTS) is utilized to acquire
and accurately engage targets with the SCWS. The SCWS (1) can be traversed 360 degrees
and elevated between -10 to +65 degrees. The SCWS (1) can be fired under armor, from the
open-protected position, and from the open hatch position. Enhanced ballistic protection is pro-
vided to the commander when performing open hatch operations from ballistic shields on the
side of, and a counterweight at the rear of the cupola. The SCWS (1) contains six unity vision
periscopes that provide 360 degrees field of view when the hatch is closed. The external fixed
ring sights under the weapon mount are used to engage targets whenever using the manual trig-
ger, and to assist the commander in acquiring the target in azimuth and elevation when operat-
ing in the open-protected hatch position.

Power for the SCWS (1) is provided by the Power Distribution Unit (PDU) and is energized
whenever vehicle master power is switched on. During power up of the system the elevation
electrical feed forward and azimuth/elevation reference gyros, which require 5 - 10 seconds for
initialization, send Built-in-Test (BIT) pass (0 V dc) or fail (5 V dc) signals to the SAFE/ARM
MODULE (SAM) (2). During the BIT, the yellow EMERGENCY mode indicator (3) on the SAM
(2) will be lit, and will remain lit completion of the BIT. Upon completion of the BIT, and if the
Power Azimuth Drive Assembly (PADA) (4), Manual Azimuth Drive Assembly (MADA) (5), and
the Elevation Mode Select Lever (EMSL) (6) are in their power positions, the green NORMAL
mode indicator (7) on the SAM (2) will light. This is the default power up mode for SCWS (1). If
one or more faults were detected during the power up BIT, the yellow EMERGENCY mode indi-
cator light (3) will remain lit and the green NORMAL mode indicator (7) would remain unlit.

0042.2-1 Change 4
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued
Once power up is complete, the commander has power elevation and azimuth control of the
SCWS with the SCWS Control Handle Assembly (SCHA) (8). Turret power is required in order
for the trigger (9) on the SCHA (8) to be activated.

Change 4 0042.2-2
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued

During normal mode operation the gyros for SCWS (1) will stabilize the platform in azimuth and
elevation whenever the palm switch (10) on the SCHA (8) is engaged. Stabilized tracking of tar-
gets is possible whenever the TRACK/SLEW switch (11) on the SCHA (8) is in the track (up)
position. SCWS (1) will provide smooth elevation rates from 0.25 mils/sec to 50 mils/sec and
traverse rates from 0.25 mils/sec to 100 mils/sec using the SCHA 4-Way Position switch (12) to
control movement. When it is necessary to rapidly move the gun to acquire new targets, placing
the TRACK/SLEW switch (11) in the slew (down) position will provide a coarse slew control of
the SCWS (1) in both elevation and traverse at a minimum rate of 10 - 900 mils/sec. Firing the
weapon requires the SAFE/ARM switch to be placed momentarily in the ARM position. The
ARMED indicator (13) will light when the weapon has been armed at the SAM (2).

0042.2-3 Change 4
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued

When the SCWS is operated in EMERGENCY mode, the gyros that provide a stabilized plat-
form, and the tracking rate in elevation and azimuth of 0.25 - 50 mils/sec, are no longer avail-
able. In EMERGENCY mode the SCWS will operate only at the slew rate of 10 - 900 mils/sec,
regardless if the TRACK/SLEW switch (11) is in the Track (up) position. The commander may
select EMERGENCY as the mode of operation, or the SAM (2) will default to EMERGENCY
mode when the following conditions exits:

• A cable disconnect is present between the SAM (2) and the elevation or azimuth/elevation ref-
erence gyros.

• The azimuth/elevation reference gyros did not initialize when SCWS (1) was powered up.
Traverse movement and weapon firing inhibit zones are active with the SAM (2) in either NOR-
MAL or EMERGENCY modes. Whenever the SCWS (1) enters the inhibit zone, which encom-
passes the loader's station between 335 degrees (14) and 188 degrees (15), power to the
azimuth and elevation motors is interrupted, the elevation and azimuth brakes are engaged, and
commander's weapon is inhibited from being fired electrically. The movement and firing inhibits
can be overridden by the commander's engaging the COMBAT OVERRIDE switch (16) on the
SAM (2). When the combat override is engaged, the red COMBAT OVERRIDE ACTIVE indicator
(17) will light, and all movement and firing inhibits are then disabled. The commander is then
able to traverse, elevate and electrically fire the weapon while operating in the inhibit zone. The
combat override will remain active until the palm switch (10) on the SCHA (8) is released, or if
the COMBAT OVERRIDE switch (16) is switched off. No movement or firing inhibits are associ-
ated with the manual traverse, manual elevation, or manual trigger control on the SCWS (1).

Change 4 0042.2-4
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued

Manual control of the SCWS (1), and firing of the weapon, is accomplished with the command-
er's hatch open and PADA (4), MADA (5), and EMSL (6) in their manual positions. Gun elevation
and firing is then controlled using the Manual Trigger Assembly (MTA) (18) on the Manual Eleva-
tion Control Handle (MECH) (19), and traverse is controlled using the hand crank on the MADA
(5). The MTA (18) is connected by a cable to the gun trigger roller (20). Before manual controls
can be used, all powered mechanical linkages must be disengaged and all manual mechanical
linkages must be engaged. When PADA (4), MADA (5), and EMSL (6) are disengaged from
power, both FIRE CONTROL MODE NORMAL (7) and EMERGENCY (3) indicator lights on the
SAM (2) will turn off, and powered mode azimuth and elevation drive motor brakes are disabled.

On tanks equipped with Slew to Cue (STC), the function of STC provides the tank commander
the capability of alining the main gun in azimuth and elevation to within 5 (+/-.5) mils between
the lay of the GPS reticle and the RTS reticle boresight cross.

Initial alinement of STC is performed in conjunction with boresighting the main gun. This estab-
lishes the angles of the SCWS STC azimuth position sensor (21) and elevation position sensor
(22), and GPS elevation line of sight resolver as the home position for all future STC engage-
ments.

0042.2-5 Change 4
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued

With the fire control system in boresight mode, the SAM (2) in normal mode, and the RTS
boresight cross (23) alined on the same aiming point on the boresight target (24) as the main
gun and GPS reticle (25), the commander establishes STC zero by depressing the zero
pushbutton (26) on the Weapon Station Control Unit (WSCU) (27).

Once STC alinement has been established, operation of the STC requires the following:
1. SCWS and main gun operating in normal mode.
2. Gunner's Control Handle (GCH) palm switch (28) or commander's handle palm switch
(29) is engaged.
3. SCHA palm switch (10) is engaged.

Change 4 0042.2-6
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued

The commander alines the RTS boresight cross (23) onto a target, depresses and releases the
STC pushbutton (30) on the SCHA (8). The WSCU (27) will override GCH (31) commands,
inhibit main gun and coax firing, calculate the offset required to aline the gun in elevation and
turret in azimuth, and aline the gun until the GPS reticle (25) is within 5 (+/- .5) mils of the target
in elevation and azimuth.

The direction the turret will slew in is dependent upon the positioning of SCWS (1), in relation to
the main gun. Any time SCWS (1) is alined to the left of 0°, whether in zone 1 or 4, the turret
movement will be counterclockwise up to 335° (Zone 1), and up to 203° (Zone 4) when combat
override on SAM (2) has been activated. When SCWS (1) is pointing to the right of 0°, the turret
will traverse clockwise to 180° (Zone 2), and up to 203° (Zone 3) when combat override on SAM
(2) has been activated. STC will deactivate if either the SCWS system or main gun is not in nor-
mal mode, or if the SCWS (1) enters the inhibit zone. STC will also deactivate if SCHA palm
switch (10), GCH palm switch (28) or commander's handle palm switch (29) are released.

0042.2-7 Change 4
 TM 9-2350-264-10-1 0042.2

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - THEORY OF

OPERATION - Continued

END OF WORK PACKAGE

Change 4 0042.2-8
 TM 9-2350-264-10-1

CHAPTER 2

OPERATOR INSTRUCTIONS: DESCRIPTION AND USE OF

OPERATOR CONTROLS AND INDICATORS
DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

TM 9-2350-264-10-1 0043

OPERATOR MAINTENANCE
DESCRIPTION AND USE OF CONTROLS AND INDICATORS

DRIVER'S CONTROLS AND INDICATORS

Key Control or Indicator Function

1 Driver's Alert panel Gives the driver the first sign of any system fault or
cautionary or emergency condition, see REDESIGNED
HULL NETWORKS BOX.
2 Steer-throttle control Steers tank when moved left or right as a steering bar.
Twist grips control engine speed.
3 Shift control Sets transmission to N (neutral), PVT (pivot), R (reverse),
D (drive-normal forward speed range), or L (low forward
speed range).
4 Service brake pedal Controls hydraulic operation of brakes in transmission.
5 Parking brake pedal Operates the brakes in transmission.
6 Hatch opening crank Rotates driver's hatch clear of hatch opening. Used only
when hatch lifting handle is set to raised position.
7 Parking brake system Shows parking brake system pressure.
hydraulic pressure gage
8 Hatch lifting handle Lifts or lowers driver's hatch to raised or closed (locked)
position.

0043-1 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

9 Driver's Master Panel Contains control switches and indicator lights for engine
(DMP) starting and for vehicle electrical, lighting, and auxiliary
systems, see REDESIGNED HULL NETWORKS BOX.
10 Periscope adjustment Raise or lower periscope viewing angle. Total adjustment
knobs range is 8°. Two adjustment knobs are on each
periscope.
11 Fire sensor Monitors driver's area for fire.
12 Driver's Instrument Panel Provides gages to show driver engine rpm, vehicle
(DIP) speed, fuel quantity, and electrical system voltage. It also
includes caution and warning lights to tell driver of faults
or emergency conditions in major tank systems, see
DRIVER'S MASTER PANEL.
13 Remote intercom switches Allow driver to transmit on intercom without using switch
on CVC helmet.
14 Fire extinguisher bottle Shows pressure of fire extinguisher bottle.
pressure gage
15 Camera Control Unit (if Provides power and control signaling to Taillight Camera
equipped) Assembly (TCA), and relays video signals to Driver's
Video Display.
16 Driver's Video Display (if Displays video signals provided by the TCA via the CCU.
equipped) Images are presented in infrared only.

Change 4 0043-2
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

17 Parking brake release Releases parking brake.

handle
18 Driver's periscope wiper Operates wiper blades on driver's center periscope.
lever
19 Periscope washer pump Squirts washing fluid onto driver's center periscope when
rubber foot button is pressed.
20 Hull Power Distribution Box Distributes battery/alternator electrical power between
(HPDB) hull and turret; provides automatic and manual reset of
circuit breakers.
21 Drain valve handle Operates drain valve to drain crew compartments. Your
tank may also be equipped with engine compartment
drain valve handle.
22 Battle override handle (if In combat emergency, when normal engine electrical
equipped) control is lost, battle override will provide manual throttle.
23 Intercommunication Provides driver intercommunication and radio operation.
control (C-10456/VRC)
or
Intercommunication
control set (C-12357/VRC)
24 Hull Networks Box Provides manually reset circuit breakers for hull electrical
circuits and distributes electrical power to hull circuits.
Inside of cover lists each circuit breaker and the circuit it
controls. If equipped with Redesigned Hull Networks Box
(RHNB), go to REDESIGNED HULL NETWORKS BOX.

0043-3 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

25 UTIL OUT jack Provides an electrical outlet for connecting light

extension cord, (Vol 3, WP 0499, Item 46).
26 UTIL OUT Circuit Breaker Provides electrical power to UTIL OUT jack.
(CB30)
27 Engine hour meter Records the turbine engine hours of operation.
28 Inflatable seal pressure Shows air pressure in turret seal.
gage (if equipped)
29 Inflatable seal pressure Inflates turret seal for tank fording operations.
pump (if equipped)
30 Personnel heater duct Controls distribution of air to driver's and turret crew
control lever stations.
31 Open/closed hatch seat Moves driver's seat up or down for open or closed hatch
control lever operations.
32 ENGINE FIRE T-handle Manually discharges engine compartment 1st shot fire
extinguisher bottle.
33 CREW FIRE T-handle Manually discharges crew compartment fire extinguisher
bottle.
34 Air direction control knob Controls flow of air to driver's station.

Change 4 0043-4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

WIRELESS EMBEDDED DIAGNOSTICS (ED) SYSTEM

Key Control or Indicator Function

1 Turret Diagnostic Detects faults from 10 sidecars in turret and contains

Controller Assembly (DCA) LCD display.
2 LCD Touch Screen Display Displays sidecar status and fault messages. Allows
operator to access function menus using touch screen.
3 Hull Diagnostic Controller Detects faults from 9 sidecars in hull.
Assembly (DCA)

0043-5 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

REDESIGNED HULL NETWORKS BOX (RHNB)

Key Control or Indicator Function

1 Redesigned Hull Networks Provides 30 electronic and one manual Circuit Breaker
Box (RHNB) (CB) for hull electrical circuits and distributes electrical
power to hull circuits.
2 Status Display Controller Located on RHNB, allows operator to monitor and control
(SDC) CB status.
3 RHNB mode light Lights green when RHNB is operating in RHNB mode.
4 ALERT light Lights amber when a fault is detected, a CB is tripped, or
a manual CB is turned off.
5 Status Message Display Displays CB status and fault messages.
(SMD)
6 MODE key Allows operator to interrupt the Power-Up Self Test
(PUST).
7 ON/OFF key Allows operator to turn CBs ON or OFF.
8 Acknowledge (ACK) key Allows operator to acknowledge CB status of OFF and
acknowledge fault messages in the SMD.
9 Up/down arrow keys Allows operator to scroll up or down through the
messages in the SMD.
10 Manual CB 30 (Utility Allows operator to turn CB 30 (utility outlet) ON or OFF.
outlet) toggle switch

Change 4 0043-6
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S ALERT PANEL

Key Control or Indicator Function

1 MASTER WARNING light Lights red to warn driver to look at the instrument panel
for warning of critical condition in engine or transmission;
lights in case of engine fire; lights if PARKING/SERVICE
BRAKES light on Driver's Master Panel (DMP) is lit.
2 RESET pushbutton Turns off MASTER CAUTION light when pressed, and
turns off MASTER WARNING light when pressed after
engine overspeed condition, (WP 0078).
3 PANEL DIM pushbutton Permits PANEL LIGHTS knob on DMP to control
brightness of alert panel lights when pressed after
VEHICLE MASTER POWER switch is set to ON.
4 MASTER CAUTION light Lights yellow to alert driver to look for vehicle fault
indication on his instrument panel. If equipped with
RHNB, alerts driver to look for vehicle fault indication on
the RHNB.
5 G/T DRIVE ACTIVE Lights red to warn driver that hatch is opened and GTD
HATCH OPEN light is active.

0043-7 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S MASTER PANEL (DMP)

Key Control or Indicator Function

1 VEHICLE MASTER Lights green when power is on in tank electrical system.

POWER light
2 VEHICLE MASTER Connects batteries/alternator to tank electrical system.
POWER switch
3 PARKING/SERVICE Lights red when parking brake is set, or not fully
BRAKES light released, or service brake is fully or partially engaged for
more than 2 minutes when vehicle engine is running.
4 PERSONNEL HEATER Selects high or low temperature output from personnel
temperature switch heater.
5 PERSONNEL HEATER Lights green when personnel heater is on.
light
6 PERSONNEL HEATER Starts, stops, and runs personnel heater and permits use
RUN FAN switch of fan for ventilation.
7 NIGHT PERISCOPE light Lights green when power is applied to either the night
vision viewer or DVE.
8 NIGHT PERISCOPE Turns power on/off to either the night vision viewer or
switch DVE.
9 BILGE PUMP light Lights green when power is applied to bilge pump.
10 BILGE PUMP switch Turns power on/off to bilge pump.
11 SMOKE GENERATOR Lights green when power is applied to smoke generator
light in engine exhaust duct.
12 SMOKE GENERATOR Turns power on/off to smoke generator.
switch

Change 4 0043-8
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S MASTER PANEL (DMP) - Continued

Key Control or Indicator Function

13 LIGHTS switch Turns power on/off to outside blackout markers, stop

light, and service lights (headlights).
14 HI BEAM light Lights green when service lights high beam lamps are lit.
15 HI BEAM switch Turns power on/off to service light high beam lamps.
16 PANEL LIGHTS TEST Turns on all panel lights and internal gage lights to full
pushbutton brightness when pressed.
17 PANEL LIGHTS knob Controls brightness of all driver's panel lights and
internal gage lights except ENGINE FIRE light on DIP,
but controls brightness of DAP lights only after PNL DIM
pushbutton is pressed, see DRIVER'S ALERT PANEL.
18 STARTER ONLY Provides power to turn engine starter without ignition.
ENGAGED switch Engine will not start using this switch.
19 SHUTOFF switch Shuts off fuel to engine.
20 TACTICAL IDLE switch Selects engine tactical idle speed of 1200-1400 rpm.
21 PUSH TO START Provides automatic engine start.
pushbutton
22 ABORT light Lights yellow to show that engine Electronic Control Unit
(ECU) has aborted start. When engine stops turning,
light will go out only after VEHICLE MASTER POWER
switch (2) is set to OFF.
23 STARTED light Lights green for 10 seconds when engine has started
successfully.

0043-9 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S INSTRUMENT PANEL (DIP)

Key Control or Indicator Function

1 ENGINE OIL TEMP HIGH Lights red if engine oil is too hot.
light
2 ENGINE OIL PRESS LOW Lights red if engine oil pressure is too low.
3 ENGINE OVERSPEED Lights red if engine rpm is too high.
light
4 ENGINE FIRE light Flashes red to warn that fire is in engine compartment.
5 1ST SHOT DISCHARGED Lights yellow when first shot engine fire extinguisher
light bottle circuit is energized.
6 RPM gage Shows engine speed in hundreds of revolutions per
minute.
7 GAS OVERTEMP light Lights red when engine power turbine input gas is too
hot.
8 2ND SHOT switch Starts engine shutdown, then discharges second shot
fire extinguisher bottle after 18-second delay.

Change 4 0043-10
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S INSTRUMENT PANEL (DIP) - Continued

Key Control or Indicator Function

9 TRANSMISSION OIL Lights red if transmission oil is too hot.

TEMP HIGH light
10 TRANSMISSION OIL Lights red if TRANSMISSION oil pressure is too low.
PRESS LOW
11 TRANSMISSION Lights red when transmission is damaged.
DAMAGED-INSPECT light
12 VEHICLE SPEED gage Shows tank speed in miles per hour (mph) and
kilometers per hour (km/h) for forward or reverse tank
movement. Also shows distance traveled in kilometers.
13 ELECTRICAL SYSTEM Shows electrical system voltage. With engine shutdown
voltmeter and VEHICLE MASTER POWER switch ON, voltmeter
shows battery voltage. With engine running, voltmeter
shows alternator output voltage.
14 LOW BAT CHARGE light Lights yellow when battery charge is too low.
15 FUEL gage Shows fuel level in tank selected on TANK SELECTOR
switch.

0043-11 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S INSTRUMENT PANEL (DIP) - Continued

Key Control or Indicator Function

16 LOW FUEL LEVEL light Lights yellow when fuel level in rear tank drops below 1/8
full.
17 TANK SELECTOR switch Selects tanks for fuel level check on FUEL gage (15).
Turns on front fuel pump when LOW FUEL LEVEL light
(16) is lit.
18 ENGINE OIL LOW light Lights yellow if engine oil level is low.
19 CABLE DISCONNECTED Lights yellow if major hull electrical cables are not
light connected (except: battery power, starter, alternator, and
test sensors).
20 CIRCUIT BREAKER Lights yellow if any manually reset hull CB is opened.
OPEN light
21 HYDRAULIC SYSTEM Lights yellow if hydraulic system malfunctions.
MALFUNCTION light
22 G/T DRIVE INHIBIT Lights yellow if gun/turret drive (GTD) inhibit
FAULT light malfunctions.

Change 4 0043-12
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S INSTRUMENT PANEL (DIP) - Continued

Key Control or Indicator Function

23 ENGINE OIL CLOGGED Lights yellow if engine oil filter is clogged.

FILTER light
24 TRANSMISSION OIL Lights yellow if transmission oil filter is clogged.
CLOGGED FILTER light
25 PRIMARY FUEL Lights yellow if fuel filter is clogged.
CLOGGED FILTER light.
26 AIR CLEANER CLOGGED Lights yellow if engine air intake filters are clogged.
FILTER light
27 REAR FUEL PUMP-R Lights yellow if right pump in rear fuel tank will not run.
INOPERATIVE light
28 REAR FUEL PUMP-L Lights yellow if left pump in rear fuel tank will not run.
INOPERATIVE light
29 FUEL CONTROL FAULTY Lights yellow if fuel control malfunctions. If light is
light flashing and if vehicle has Digital Electronic Control Unit
(DECU), vehicle power to DECU is malfunctioning.
30 SPARE (Currently nonoperational).

0043-13 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

CAMERA CONTROL UNIT (CCU) (IF EQUIPPED)

Key Control or Indicator Function

1 SHIELD Opens and closes the debris shield covering the camera
lens.
2 BRIGHT Increases or decreases brightness on the display.
3 CNTRST Increases or decreases contrast on the display.
4 POL Change the polarity between white-hot/black-hot
(white-hot is the power-on default)
5 LAMP TEST Test LEDs on the CCU.
6 SYSTEM MAIN POWER Provides power to the CCU and RVSS system, and is
protected by a switch guard. Switch will remain in ON
position even with guard closed.
7 RESET/CONFIG Used to configure the Driver's Video Display to display an
overlay over the image, or to reset it to the default image
with no overlay.
8 PWR Indicates when system power is on (illuminated green
indicator).
9 VIDEO IN/OUT Display of video faults (Built-in Test (BIT) and
diagnostics): VID IN: video signal is not coming into
video splitter; VID OUT: video splitter not passing signal

Change 4 0043-14
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DRIVER'S VIDEO DISPLAY (DVD) (IF EQUIPPED)

Key Control or Indicator Function

1 PWR Turns DVD on/off.

2 BLK OUT Turns off all bezel backlighting, indicators, and display
backlight, without turning off the display or dimming
through all brightness levels.
3 N/A Non-functioning switch.
4 Video False Color Enables user to utilize edge-enhanced color mode with
the incoming video.
5 Brightness up Increases brightness of display backlight.
6 Brightness down Decreases brightness of display backlight.

0043-15 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMMANDER'S CONTROLS AND INDICATORS

Key Control or Indicator Function

1 Unity periscopes Provide nonmagnified field of vision. Full 360° field

covered by six periscopes around commander's hatch.
2 Frequency selector control Turns radio set on and off with radio in REMOTE mode
(C-2742/VRC) and selects operating frequency channel.
or
Frequency control monitor
(C-11291/VRC)
3 Basic User Unit (BUU) Sends and receives messages on the Position Location
Receiver/Transmitter Reporting System (PLRS) network.
4 User Readout (URO) Data entry and readout.
5 Selectable Power Adapter Provides power to Position Location Reporting System
(SPA) (PLRS).
6 Intercommunication Provides commander intercommunication and radio
control set (C-12357/VRC) operation.
7 Commander's panel Contains commander's control switches and indicator
lights, see COMMANDER'S ALERT PANEL.
8 POWER/MANUAL lever Selects powered or manual azimuth operation of
commander's weapon station.
9 Commander's Weapon Allows commander to aim commander's weapon using a
Sight (CWS) ballistic reticle. This reticle is designed for use with the
caliber .50 machinegun. Sight provides 3X magnification.

Change 4 0043-16
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMMANDER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

10 Remote Thermal Sight Allows commander to aim commander's weapon using a

(RTS) with thermal ballistic reticle. Tank commander can select either a .50
sight/day TV system cal or M240 reticle based on which machinegun is in
installed (if equipped) commander's weapon station. Sight provides an optical
3X magnification for either day sight or thermal sight.
System provides 6X and 9X electronic magnification for
day sight and thermal sight.
11 Forward unity periscope Allows commander to aim commander's weapon using
fixed-ring sights under weapon mount.
12 Commander's handle Controls main gun elevation and traverses turret during
powered operation. Button on handle controls laser
rangefinder; trigger fires main gun or coaxial
machinegun.
13 CWS power control handle Traverses CWS during power operations when palm
switch is depressed and button on handle is moved. Also
contains an intercom/radio switch.
14 Commander's GPS Shows tank commander the target and gun sighting view
extension eyepiece and data in the Gunner's Primary Sight (GPS).
15 CWS manual traverse ring Traverses CWS during manual operation.
16 Commander's remote Permits commander to transmit on intercom or radio
intercom switch without using switch on CVC helmet.

0043-17 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMMANDER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

17 CWS elevation crank Controls elevation of commander's weapon. Button on

handle handle fires weapon.
18 Commander's weapon When set to right (ARMED) position, arms weapon firing
SAFE/ARMED switch circuit. When set to left (SAFE) position, disarms weapon
firing circuit.
19 Commander's weapon Lights red when commander's weapon is armed.
SAFE/ARMED light
20 Seat height adjustment Locks commander's seat in desired height position.
knob
21 Platforms height Locks commander's platforms in desired height position.
adjustment knob
22 Operating handle Latches and unlatches commander's hatch in closed
position.
23 Locking lever Unlocks hatch from protected open and full open
positions.
24 T-handle Locks and unlocks hatch in yoke assembly.

Change 4 0043-18
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMMANDER'S ALERT PANEL

Key Control or Indicator Function

1 DRIVER'S HATCH OPEN Lights red to warn commander that driver's hatch is
light opened and Gun/Turret Drive (GTD) is inhibited.
2 OPEN HATCH OVERRIDE Used to override gun/turret drive inhibit caused when
switch driver's hatch is opened.
3 GUN/TURRET DRIVE Lights yellow to alert commander if a gun/turret drive
INHIBIT FAULT light inhibit malfunction has been detected.
4 RAD/INT switch Used to shift operation between radio and intercom.

0043-19 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

TANK COMMANDER'S PANEL (TCP)

Key Control or Indicator Function

1 GRENADES READY/ Arms or disarms smoke grenade firing circuit.

SAFE switch
2 GRENADES SALVO 1 Fires grenades, half from each side.
pushbutton
3 GRENADES SALVO 2 Fires grenades, half from each side.
pushbutton
4 PANEL LIGHTS TEST Turns on all commander's and loader's panel lights to
pushbutton maximum brightness.
5 PANEL LIGHTS knob Controls brightness of commander's and loader's panel
lights.
6 WARNING ENGINE FIRE Flashes red to warn that fire is in engine compartment.
light
7 WARNING CKT BKR Lights yellow if any manually reset turret CB is open.
OPEN light
8 WARNING FIRE Lights red if malfunction occurs in fire control system, or
CONTROL electrical cable is disconnected.
MALFUNCTION light
9 WARNING LOW BAT CHG Lights yellow when battery charge is low.
light

Change 4 0043-20
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

TANK COMMANDER'S PANEL (TCP) - Continued

Key Control or Indicator Function

10 NBC WARNING Lights red when bleed air temperature from precooler is
OVERHEAT SPONSON IN too high. Some panels may be equipped with yellow
light light.
11 NBC WARNING Lights red when air temperature to filter is too high.
OVERHEAT SPONSON Some panels may be equipped with yellow light.
OUT light
12 NBC WARNING CREW Lights red when crew compartment is not pressurized.
PRESS LOW light Some panels may be equipped with yellow light.
13 NBC WARNING FILTER Lights yellow when filters are dirty (clogged).
CLOGGED light
14 NBC ALARM NUCLEAR Not in service.
light
15 NBC ALARM MUTE switch Not in service.
16 NBC ALARM CHEMICAL Not in service.
light
17 AIR TEMP WARMER/ Controls filtered air temperature.
COOLER

0043-21 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

TANK COMMANDER'S PANEL (TCP) - Continued

Key Control or Indicator Function

18 NBC MODE BACKUP ON Lights green when NBC BACKUP MODE is ON and
light MAIN MODE is off.
19 NBC MODE BACKUP Controls NBC BACKUP MODE when MAIN MODE is off.
switch
20 NBC MODE BACKUP OFF Lights red when NBC BACKUP MODE is OFF.
light.
21 NBC MODE MAIN OFF Lights red when NBC MAIN MODE is OFF.
light
22 NBC MODE MAIN switch Controls NBC MAIN MODE.
23 NBC MODE MAIN ON Lights green when NBC MAIN MODE is ON.
light
24 VEHICLE MASTER Turns vehicle electrical power on and off.
POWER switch
25 VEHICLE MASTER Lights green when power is on in tank electrical system.
POWER light

Change 4 0043-22
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

TANK COMMANDER'S PANEL (TCP) - Continued

Key Control or Indicator Function

26 TURRET POWER light Lights green when turret power is on.

27 TURRET POWER switch Turns electrical power to turret on and off. Turret power
automatically resets to off if vehicle master power is lost.
Also turns vehicle master power on.
28 MANUAL RANGE BATTLE Directs ballistic computer to use preset range value for
SGT pushbutton selected ammunition instead of automatic range inputs.
29 MANUAL RANGE Manually adjusts range input to ballistic computer after
ADD-DROP switch BATTLE SGT is pressed.
30 AUX HYDR POWER light Lights green when auxiliary hydraulic system is on.
31 AUX HYDR POWER Used to turn on or shut off auxiliary hydraulic system
switch when vehicle master power is on and vehicle engine is
not running.

0043-23 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

UPGRADED TANK COMMANDER'S PANEL (UTCP) (IF EQUIPPED)

Key Control or Indicator Function

1 RDY pushbutton Arms or disarms smoke grenade firing circuit.

2 SAL 1 pushbutton Fires grenades, half from each side.
3 SAL 2 pushbutton Fires grenades, half from each side.
4 PNL LGTS TEST Turns on all commander's and loader's panel lights to
pushbutton maximum brightness, and tests NBC audible tone alert
(tone alert should be heard through the vehicle intercom
system). If RHNB equipped, illuminates character lights
in Status Message Display (SMD) to full brightness.
5 PNL LGTS up/down Controls brightness of commander's and loader's panel
arrows lights.
6 WARNING ENG FIRE light Lights red to warn that fire is in engine compartment.
7 WARNING CB OPEN light Lights amber if any manually reset turret circuit breaker
is open on Turret Network Box (TNB). If Redesigned Hull
Network Box (RHNB) equipped, lights amber if a manual
or electronic CB is tripped, or a manual CB is turned off.
8 WARNING FC MALF light Lights red if malfunction occurs in fire control system, or
electrical cable is disconnected.
9 WARNING LOW BAT light Lights amber when battery charge is low.

Change 4 0043-24
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

UPGRADED TANK COMMANDER'S PANEL (UTCP) (IF EQUIPPED) - Continued

Key Control or Indicator Function

10 NBC WARN SPONSON Lights red when bleed air temperature from precooler is
OVHT IN light too high.
11 NBC WARN SPONSON Lights red when air temperature to filter is too high.
OVRHT OUT light
12 NBC WARN PRES LOW Lights red when crew compartment is not pressurized.
light
13 NBC WARN FILT CLOG Lights amber when filters are dirty (clogged).
light
14 NBC ALARM NUC light Lights RED if nuclear radiation is detected.
15 ALM MUTE pushbutton Both audio NBC alarms, NBC WARN SPONSON
OVRHT IN audible tone alert, and NBC WARN
SPONSON OVERHT OUT audible tone alert can be
muted by pressing ALM MUTE pushbutton.
16 NBC ALARM CHEM light Lights RED if NBC agents are detected.
17 AIR TEMP up/down Controls filtered air temperature.
arrows

0043-25 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

UPGRADED TANK COMMANDER'S PANEL (UTCP) (IF EQUIPPED) - Continued

Key Control or Indicator Function

18 NBC BACK on light Lights green when NBC BACKUP mode is on and MAIN
mode is off.
19 NBC BACK pushbutton Controls NBC BACKUP mode when MAIN mode is off.
20 NBC BACK pushbutton Lights when NBC BACK system is on.
light
21 NBC BACK off light Lights red when NBC BACKUP mode is off.
22 NBC MAIN off light Lights red when NBC MAIN mode is off.
23 NBC MAIN pushbutton Controls NBC MAIN mode.
24 NBC MAIN pushbutton Lights when NBC MAIN system is on.
light
25 NBC MAIN on light Lights green when NBC MAIN mode is on.
26 MST pushbutton Turns vehicle electrical power on and off.
27 MST light Lights green when power is on in tank electrical system.

Change 4 0043-26
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

UPGRADED TANK COMMANDER'S PANEL (UTCP) (IF EQUIPPED) - Continued

Key Control or Indicator Function

28 TUR light Lights green when turret power is on.

29 TUR pushbutton Turns electrical power to turret on and off. Turret power
automatically resets to off if vehicle master power is lost.
Also turns vehicle master power on.
30 BTL SITE pushbutton Directs ballistic computer to use preset range value for
selected ammunition instead of automatic range inputs.
31 ADD-DROP pushbutton Manually adjusts range input to ballistic computer after
BTL SITE is pressed.
32 AUX HYD light Lights green when auxiliary hydraulic system is on.
33 AUX HYD pushbutton Used to turn on or shut off auxiliary hydraulic system
when vehicle master power is on and vehicle engine is
not running.
34 SMOKE GRENADES Cover is to ensure there is no accidental discharge of
cover smoke grenades launchers. Cover must be lifted to
operate pushbuttons.
35 POWER cover Cover is to ensure there is no accidental engagement of
turret power or master power. Cover must be lifted to
operate pushbuttons.

0043-27 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

REMOTE THERMAL SIGHT (RTS) DISPLAY CONTROL MODULE (DCM)

(IF EQUIPPED)

Key Control or Indicator Function

1 Power/Brightness Switch Rotary position switch that powers DCM on/off and
regulates image brightness.
2 4-Way Position Switch NEAR/FAR: Up/down toggle of 4-way switch focuses
thermal video image target. MENU: Left toggle of 4-way
switch enables commander to select menu options
(reticle selection, boresight, BIT results and self
position). Right toggle of 4-way switch selects option
highlighted.
3 ZOOM Switch When depressed, toggles between zero magnification,
2X power magnification, 3X power magnification.
Depress ZOOM switch a fourth time to return operator to
zero magnification.
4 VID SEL (Video Select) Commander can select thermal video, day TV video or
Switch 2nd generation FLIR video from GPS (USMC only).
5 POL (Polarity) Switch When selected, changes thermal image from white hot
(default) to black hot. Switch is not functional when DCM
is in Day TV or FEP (USMC only) video mode.
6 LEDs Located on right side of DCM, LEDs are used for fault
isolation. They indicate receipt of power control unit +15
V dc, generation of internal power forms and the DCM
processor clock is running.

Change 4 0043-28
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

DISPLAY UNIT (APPLIQUE)

Key Control or Indicator Function

1 Display Unit Displays reports, overlays, and full color map with
Military Grid Reference System (MGRS).
2 Commander's weapon Lights red when commander's weapon is armed.
ARMED light on display tilt
bracket
3 Display tilt bracket handle Allows tank commander to tilt display unit for view while
standing.

0043-29 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

GUNNER'S CONTROLS AND INDICATORS

Key Control or Indicator Function

1 Gunner's Primary Sight Provides primary optical sight for gunner. Reticle
(GPS) controlled by ballistic computer for day or night vision,
see item 17.
2 GPS ballistic door actuator Opens and closes GPS ballistic doors.
handles
3 Intercommunication Provides gunner intercommunication and radio
control set (C-12357/VRC) operation.
4 Computer Control Panel Controls inputs to ballistic computer and shows readouts
(CCP) of inputs, see GUNNER'S PRIMARY SIGHT (door
shown open).
5 Manual drive handle Traverses turret when lever is squeezed and manual
drive handle is rotated.
6 Gunner's handles Move gun in elevation and traverse turret. Buttons on
each handle fire laser rangefinder and main gun or
coaxial machinegun.
7 Gunner's remote (foot) Allows gunner to transmit on intercom without using
intercom switch switch on CVC helmet.
8 Hydraulic pump handle Elevates and depresses main and coaxial guns when
rotated with palm switch squeezed. Contains emergency
trigger.

Change 4 0043-30
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

GUNNER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

9 Emergency MANUAL Fires main gun if all electrical power is lost or if gun
FIRING device (blasting cannot be fired using normal or emergency triggers.
machine)
10 Gunner's Auxiliary Sight Allows gunner to aim main gun if primary sight is not
(GAS) operating.
11 GAS control panel Contains controls to select GAS reticle and filter, and to
light and control reticle brightness.
12 GAS reticle boresight Adjusts GAS reticle during boresighting.
adjustment knobs
13 Hydraulic pressure gage Shows system hydraulic pressure.
14 Unity window Provides nonmagnified Field of View (FOV).
15 DEFROSTER SWITCH Controls GPS defroster operation for day channel only.
16 DEFROSTER light Lights white when defroster is in operation.
17 RETICLE knob Controls GPS reticle brightness.

0043-31 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

GUNNER'S PRIMARY SIGHT (GPS)

Key Control or Indicator Function

1 FIRE CONTROL MODE Show NORMAL, EMERGENCY, or MANUAL fire control

lights mode.
2 FIRE CONTROL MODE Selects NORMAL, EMERGENCY, or MANUAL fire
switch control mode. Resets to NORMAL when power is turned
off.
3 FLTR/CLEAR/SHTR Positions filter, clear window, or shutter in GPS day optic
switch system.
4 GUN SELECT lights Show GUN SELECT switch setting.
5 GUN SELECT switch Selects main gun or coaxial machinegun firing circuit for
firing, or trigger safe so neither gun will fire. Resets to
safe when power is turned off. Turns NBC main system
on if set to COAX when engine is running.
6 AMMUNITION SELECT Inputs ammunition type data into ballistic computer when
switch GUN SELECT switch (5) is set to MAIN.
7 MAGNIFICATION lever Selects optical 3X or 10X magnification for GPS day
optical system.
8 AMMUNITION SELECT Show ammunition type selected on AMMUNITION
lights SELECT switch (6) when GUN SELECT switch (5) is set
to MAIN or TRIGGER SAFE.
9 GPS eyepiece Allows gunner to use GPS for aiming LRF, main gun, and
coaxial machinegun.

Change 4 0043-32
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

GUNNER'S PRIMARY SIGHT (GPS) - Continued

Key Control or Indicator Function

10 NORMAL MODE DRIFT, Corrects for elevation drift in stabilized (normal) sighting
EL knob system.
11 NORMAL MODE DRIFT, Corrects for turret azimuth drift in stabilized (normal)
AZ knob sighting system.
12 RANGE switch Sets first or last return, or safe mode of LRF. LRF
internally returns to safe when turret power is turned off
(Switch does not reset to safe position.)
13 Diopter adjustment Adjusts GPS eyepiece to bring reticle into sharp focus.
14 PANEL LIGHTS knob Controls brightness of GPS and Thermal Imaging
System (TIS) indicator lights.
15 PANEL LIGHTS, TEST Turns on all GPS and TIS indicator lights to full
pushbutton brightness.
16 MRS OUT/IN lever Controls mirror that allows Muzzle Reference Sensor
(MRS) reticle to appear in GPS optical system.
17 THERMAL Selects 3X or 10X magnification for TIS image (two
MAGNIFICATION lever configurations).
18 FOCUS knob A press to turn knob that adjusts focus of TIS image.
19 ANTI-GLARE knob Selects 1 of 5 positions. Position 1: no filter; positions 2,
3, and 4: used to improve thermal image; position 5:
shutter, used when TIS is in standby and off.

0043-33 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

GUNNER'S PRIMARY SIGHT (GPS) - Continued

Key Control or Indicator Function

20 CONTRAST knob Adjusts contrast of TIS image.

21 POLARITY switch Selects white or black presentation of hot objects in TIS
image.
22 RETICLE knob Adjusts reticle intensity in TIS image continuously from
white to black.
23 TRU READY light Lights green to indicate that TIS is cooling and is
beginning to receive a thermal image.
24 SYMBOLS knob Adjusts brightness of range, multiple returns,
ready-to-fire symbol, and fire control fault F symbol in the
GPS field of view. Used for both day and TIS operation.
25 FAULT light Indicates a variety of malfunctions in TIS when there is
turret power to the TIS.
26 Lock levers Locks AZ and EL BORESIGHT knobs.
27 BORESIGHT knobs Sets TIS reticle in elevation (EL) and azimuth (AZ) to
GPS aiming position during TIS alinement.
28 UNIT TEST PATTERN Selects TIS unit for built-in test.
switch
29 SENSITIVITY knob Adjusts brightness of TIS image.
30 THERMAL MODE switch Selects OFF, ON, or STBY mode of TIS.

Change 4 0043-34
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

FORWARD LOOKING INFRARED (FLIR) BIOCULAR IMAGE CONTROL UNIT

(BICU) - ARMY (IF EQUIPPED)

Key Control or Indicator Function

1 THERMAL MODE knob Selects OFF, SDBY, BIOC OFF, or ON mode of TIS.
2 Biocular assembly display Shows gunner thermal channel image.
3 FAULT light Indicates a variety of malfunctions in TIS when there is
turret power to the TIS.
4 RETICLE knob Adjust reticle intensity in TIS image from white to black.
5 BRIGHTNESS/ Selects automatic or operator control of TIS image
CONTRAST switch brightness and contrast.
6 BRIGHTNESS knob Adjusts brightness of BICU image when in the manual
mode.
7 CONTRAST knob Adjusts contrast of BICU image when in the manual
mode.
8 FOCUS switch Focuses TIS image target.
9 MAGNIFICATION knob Selects 3X, 6X, 50X, 25X, or 13X magnification of TIS
image.
10 SYMBOL knob Adjusts brightness of range, multiple returns,
ready-to-fire symbol, and fire control fault -F- symbol in
the GPS Field of View (FOV). Used for both day and TIS
operation.
11 POLARITY switch Selects white or black presentation of hot objects in TIS
image.

0043-35 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

FORWARD LOOKING INFRARED (FLIR) THERMAL RECEIVER UNIT (TRU) CON-

TROL PANEL - ARMY (IF EQUIPPED)

Key Control or Indicator Function

1 SEARCH/STARE knob Turn to select SEARCH, used for observation/target

acquisition when tank or turret is moving. STARE
settings 1 thru 5 used for detecting moving targets when
tank and turret are stationary.
2 MODE knob Selects MENU options, NORM (normal operation), BS
(boresight) or MENU/BIT of TIS.
3 BORESIGHT control When MODE knob is set to BS, adjusts reticle position
vertically (UP or DOWN) and horizontally (L or R).
Depress center of the switch to accept the updated
boresight coordinates.
When MODE switch is set to MENU, scrolls Up or Down
to select a top-level system menu item, then toggles R to
select the sub-menu options available within the selected
menu item. Depressing the center of the BORESIGHT
switch executes a menu item.
4 TRU READY light Lights green to indicate that TIS is ready to receive a
thermal image.
5 ANTI-GLARE knob Turn to select ANTI-GLARE filter settings: AUTO CLR,
AUTO 1, MAN CLR, MAN 1, or MAN 2.

Change 4 0043-36
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

FIREPOWER ENHANCEMENT PROGRAM (FEP) THERMAL IMAGING SYSTEM

(TIS) BIOCULAR IMAGE CONTROL UNIT (BICU) - MARINE CORPS

Key Control or Indicator Function

1 THERMAL MODE knob Selects OFF, SDBY, BIOC OFF, or ON mode on FEP TIS.
2 FAULT light Illuminates red if any mission critical failures occur in
FEP TIS.
3 BRIGHTNESS/ Selects AUTO, MAN, or LACE for brightness and
CONTRAST switch contrast adjustment.
4 BRIGHTNESS knob Manual brightness adjustment of the Cathode Ray Tube
(CRT) or level of the thermal image. Active only when the
BRIGHTNESS/CONTRAST knob is set to MAN (manual)
position.
5 RETICLE knob Adjust reticle brightness in FLIR display (black to white).

0043-37 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

FIREPOWER ENHANCEMENT PROGRAM (FEP) THERMAL IMAGING SYSTEM

(TIS) BIOCULAR IMAGE CONTROL UNIT (BICU) - MARINE CORPS - Continued

Key Control or Indicator Function

6 CONTRAST knob Manual contrast adjustment of the CRT or level of the

thermal image. Active only when the BRIGHTNESS/
CONTRAST knob is set to MAN (manual) position.
7 SYMBOL knob Adjusts symbology brightness in the monocular/Biocular
Image Control Unit (BICU) displays (black to white).
8 FOCUS knob Adjusts sharpness of image in each of the video
processing modes.
9 MAGNIFICATION knob Selects 3X, 6X, 50X, 25X, or 12X magnification that
defines field of view (Wide Field of View (WFOV) or
Narrow Field of View (NFOV)) for FEP TIS image.
10 POLARITY switch Selects WH (white hot) or BH (black hot) to designate
hot objects in FEP TIS thermal scene.

Change 4 0043-38
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

FIREPOWER ENHANCEMENT PROGRAM THERMAL IMAGING SYSTEM (FEP

TIS) (TRU CONTROL PANEL) - MARINE CORPS

Key Control or Indicator Function

1 SEARCH/STARE knob Selects STARE, LOW, HIGH, or SEARCH, for

optimization control of FEP TIS imagery.
2 MODE knob Selects MENU (FTL, BIT, Maintain), NORM (normal
operations), and BS (boresight).
3 BORESIGHT switch When MODE knob is set to BS, adjusts reticle position
vertically (UP or DOWN) and horizontally (L or R).
Depress center of the switch to accept the updated
boresight coordinates.
When MODE switch is set to MENU, scrolls Up or Down
to select a top-level system menu item, then toggles R to
select the sub-menu options available within the selected
menu item. Depressing the center of the BORESIGHT
switch executes a menu item.
4 TRU READY light Illuminates green to indicate that TRU detector has
achieved cool down.
5 FILTER knob Selects AUTO-1, AUTO-CLR, MAN-CLR, MAN-1 or
MAN-2 for control of the optical filter used for infrared
imagery.

0043-39 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMPUTER CONTROL PANEL (CCP)

Key Control or Indicator Function

1 TEST pushbutton Starts self-test of fire control system and is used for
testing computer panel lights.
2 NO GO light Lights red if failure occurs during self-test and self-test
stops.
3 AMMO TEMP pushbutton Sets computer for manual input of ammunition
temperature data, and shows previous data (if any) on
display.
4 AMMO SUBDES Sets computer for manual input of ammunition
pushbutton subdesignation code and shows previous code (if any)
on display.
5 BS ADJUST pushbutton Sets computer for manual input of battle sight range
data, and shows previous data (if any) on display.
6 MAINT DATA pushbutton For field maintenance use only.
7 ON/OFF switch Turns CCP on and off.
8 PWR light Lights green when CCP power is on.

Change 4 0043-40
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMPUTER CONTROL PANEL (CCP) - Continued

Key Control or Indicator Function

9 BARO PRESS pushbutton Sets computer for manual input of barometric pressure
data, and shows previous data (if any) on display.
10 AIR TEMP pushbutton Sets computer for manual input of air temperature data,
and shows previous data (if any) on display.
11 MRS light Indicates MRS is set in manual adjustment of fire control
system and computer to compensate for gun tube droop.
12 RANGE pushbutton Cancels automatic range data and sets computer for
manual range input and shows previous data (if any) on
display.
13 LEAD pushbutton Cancels automatic lead data and sets computer for
manual input of lead data, and shows previous data (if
any) on display.
14 CANT pushbutton Cancels automatic cant data and sets computer for
manual input of cant data, and shows previous data (if
any) on display.
15 CROSSWIND pushbutton Cancels automatic crosswind data and sets computer for
manual input of crosswind data, and shows previous
data (if any) on display.

0043-41 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COMPUTER CONTROL PANEL (CCP) - Continued

Key Control or Indicator Function

16 CCP display Shows previously stored information when input

pushbutton is pressed. Shows new information entered
using numbered pushbuttons or RETICLE ADJUST
toggle switch (20). Display will flash if input is higher or
lower than preset limits.
17 ZERO pushbutton Sets computer for input of zero corrections.
18 BORESIGHT pushbutton Sets computer for input of boresight corrections.
19 Numbered pushbuttons Enter data on computer display after an input button is
pressed.
20 RETICLE ADJUST toggle Moves GPS reticle up, right, down, or left during
switch boresighting, zeroing, or MRS correction operation.
21 ENTER pushbutton Enters data on computer display into computer memory
for use in ballistic solutions.
22 CLEAR pushbutton Clears display of any manual-entry numbers before
ENTER pushbutton has been pushed. Display resets to
original numbers. Used to correct an incorrect manual
entry, but must be used before ENTER is pushed.

Change 4 0043-42
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS

Key Control or Indicator Function

1 Intercommunication Provides loader intercommunication and radio operation.

control set (C-12357/VRC) (Can also be used by training monitor to communicate
through intercom.)
2 Turret Networks Box (TNB) Provides manually reset CB for turret electrical circuits;
distributes electrical power to turret circuits; cover lists
each CB and the circuit it controls; provides UTILITY
OUTLET for connecting light extension cord (Vol 3,
WP 0499, Item 46) and cable assembly (Vol 3, WP 0499,
Item 15). If equipped with Redesigned Turret Networks
Box (RTNB), see REDESIGNED TURRET NETWORKS
BOX.
3 Receiver (R-442/VRC) Monitors selected communication channel (if equipped).
4 Receiver-Transmitter Provides radio communication capability (one RT-1439/
(RT-246/VRC) VRC receiver-transmitter is an AN/VRC-87 (short range)
or One or radio, two RT-1439/VRC receiver-transmitters can be
Two Receiver- connected as AN/VRC-89 (long range/short range) radio
Transmitters (RT-1439/ sets (SINCGARS)).
VRC)
5 SAFE/ARMED switch When in up (ARMED) position, arms main gun firing
handle circuit. When in down (SAFE) position, disarms main gun
firing circuit.
6 Breechblock operating Opens 120 mm gun breechblock. Normally stowed in
handle stowage clip (Vol 2, WP 0205).
7 Manual breechblock Closes 120 mm gun breechblock.
closing lever
8 Power Distribution Box Provides additional utility jacks in the turret.
(PDB)

0043-43 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

9 MAIN GUN STATUS lights Show armed or safe status of main gun firing circuit.
10 Fire sensor Monitors turret area for fire.
11 TURRET BLOWER, or if Turns NBC main system on. Will turn system off unless
equipped, NBC MAIN NBC MODE MAIN switch on commander's panel is on or
switch. unless a chemical or nuclear alarm is detected.
12 GUN/TURRET DRIVE Show operating mode of gun/turret drive system.
lights
13 GUN/TURRET DRIVE Sets gun/turret drive system to powered, manual, or
switch elevation uncoupled mode.
14 Ready ammunition door Locks ready ammunition door open for loading
lock ammunition.
15 Stowage ammunition door Locks ready ammunition door closed during normal
latch handle operation.
16 Loader's knee switch Opens and closes ready ammunition bustle door (stowed
in up position).
17 Turret lock lever Mechanically locks turret to prevent traversing.

Change 4 0043-44
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

18 Fire sensor Monitors turret area for fire.

19 Hatch-latch lock Locks loader's hatch in full open position.
20 Loader's hatch Permits crew entry into or exit from tank.
21 Periscope Provides nonmagnified Field of View (FOV); rotates
through 360°.
22 Hatch-closed handle Latches and unlatches loader's hatch in closed position.
23 Audio frequency amplifier Amplifies crew intercommunication and external radio
(AM1780/VRC) signals. Controls radio intercom operation.
or
Indicator control
(CD-82/VRC)
24 Loudspeaker (LS-688/ Used in place of CVC helmet. Can be used outside tank
VRC) by connecting 30 ft (9.15 m) cable issued with Vehicle
Intercommunications System (VIS).
25 Ready ammunition door Firmly secures ready ammunition door after normal
closing actuator closing cycle is completed.

0043-45 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

26 Skate Provides traversing movement for gun along track. Also

mounts gun cradle pintle and allows rotational motion.
27 Track Provides stable base for traversing gun movement.
28 Gun cradle Securely holds gun. Pintle is welded to bottom of gun
cradle and mounts in skate.

Change 4 0043-46
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

29 Gun shield assembly Protects loader from ballistic threats.

30 Ballistic glass Removable glass for ballistic protection.
31 Locking lever Retains ballistic glass. It is hinged to facilitate easy
removal.
32 Snap pin Secures locking lever to gun shield assembly.

0043-47 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

33 Fence Protects loader from ballistic threats.

34 Fence gate Allows unobstructed access to loader's hatch.
35 Fence gate latch Locks fence gate in closed position.

Change 4 0043-48
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

36 Control grips Allows manual control for gun movement.

37 Elevation lockpin Locks loader's machinegun in selected elevation.
38 Azimuth locking lever Locks/releases skate to track. Prevents or allows gun to
traverse on track.

0043-49 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

39 Control grip stowage block Stowage location for control grips when M240B is being
used.
40 Pintle lock Locks gun shield assembly to skate pintle mount.
Prevents rotation. Used for stowage position.

Change 4 0043-50
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

LOADER'S CONTROLS AND INDICATORS - Continued

Key Control or Indicator Function

41 Mounting pins Securely mounts gun to cradle.

42 Trigger assembly Controls firing of weapon.

0043-51 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

REDESIGNED TURRET NETWORKS BOX (RTNB)

Key Control or Indicator Function

1 Redesigned Turret Provides 31 electronic and six manual CBs for turret
Networks Box (RTNB) electrical circuits and distributes electrical power to turret
circuits. Also provides utility outlet power and interface
for Embedded Diagnostics (ED).
2 Status Display Controller Located on RTNB, allows operator to monitor and control
(SDC) CB status and acknowledge fault messages.
3 RTNB mode light Lights green when RTNB is operating in RTNB mode.
Flashes green when RTNB is operating in DIAG mode
and a fault is detected.
4 DIAG mode Light Flashes green when Embedded Diagnostics (ED)
detects a fault and RTNB is in RTNB mode. Lights solid
green when RTNB is operating in DIAG mode.
5 ALERT light Lights amber when a fault is detected, a CB is tripped, or
a manual CB is turned off.
6 Status Message Display Displays CB status and fault messages.
(SMD)
7 MODE key Allows operator to change between the RTNB and DIAG
modes and to interrupt the Power-Up Self Test (PUST).
8 ON/OFF key Allows operator to turn electronic CBs ON or OFF.
9 Acknowledge (ACK) key Allows operator to acknowledge CB status of OFF and
acknowledge fault messages in the SMD.
10 Up/down arrow keys Allows operator to scroll up or down through the
messages in the SMD.
11 Manual CB toggle Allows operator to turn manual CBs ON or OFF.
switches
12 Utility outlet jacks Allows operator to connect light extension (Vol 3,
WP 0499, Item 46) and cable assembly (Vol 3, WP 0499,
Item 15). Provides power for auxiliary equipment.

Change 4 0043-52
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

2kW EXTERNAL AUXILIARY POWER UNIT (EAPU) CONTROLS AND INDICATORS

(LOCAL CONTROL PANEL)

Key Control or Indicator Function

1 MANUAL FUEL handle Feeds fuel to engine during manual start.

2 MANUAL START handle Turns engine over during manual start.
3 ENGINE HOURS meter Measures accumulated running time for maintenance
purposes.
4 EAPU START/ON/STOP Moved to START position, starts electric starter motor
switch turning while injecting fuel. Moved to ON position, allows
EAPU to run. Moved to STOP position, shuts off fuel
flow.
5 OUTPUT POWER Connects generator 24 V dc output to tank circuits.
ON/OFF switch Power circuit is protected by CB,
see item 7.
6 REMOTE/LOCAL switch Allows EAPU to be operated from local or remote control
panels.
7 CIRCUIT BREAKER Shifts from ON to OFF when current drawn by EAPU
ON/OFF switch circuits exceeds safe level.

0043-53 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

3kW EXTERNAL AUXILIARY POWER UNIT (EAPU) CONTROLS AND INDICATORS

(LOCAL CONTROL PANEL)

Key Control or Indicator Function

1 MANUAL FUEL handle Feeds fuel to engine during manual start.

2 MANUAL START handle Turns engine over during manual start.
3 ENGINE HOURS meter Measures accumulated running time for maintenance
purposes.
4 EAPU START/ON/STOP Moved to START position, starts electric starter motor
switch turning while injecting fuel. Moved to ON position, allows
EAPU to run. Moved to STOP position, shuts off fuel
flow.
5 OUTPUT POWER Connects generator 24 V dc output to tank circuits.
ON/OFF switch Power circuit is protected by CB,
see item 7.
6 REMOTE/LOCAL switch Allows EAPU to be operated from local or remote control
panels.
7 CIRCUIT BREAKER Shifts from ON to OFF when current drawn by EAPU
ON/OFF switch circuits exceeds safe level.
8 12V CIRCUIT BREAKER Shifts from ON to OFF when current drawn by 12V DC
switch outlet (10) exceeds safe level.
9 12V VOLT POWER Connects power to the 12V DC outlet (10).
ON/OFF switch
10 12V DC OUTLET Provides a regulated DC output to auxiliary devices.

Change 4 0043-54
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

EXTERNAL AUXILIARY POWER UNIT (EAPU) CONTROLS AND INDICATORS

(ENGINE)

Key Control or Indicator Function

1 Compression release lever Relieves cylinder compression prior to manual start of

EAPU.

0043-55 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

REMOTE CONTROL PANEL

Key Control or Indicator Function

1 APU CONTROL START/ Moved to START position, starts electric motor turning
ON/STOP switch while injecting fuel. Moved to ON position, allows EAPU
to run. Moved to STOP position, shuts off fuel flow.
2 APU CONTROL light Lights when EAPU is running. Flashes when cold
weather (below 20°F (-7°C)) start cycle is being
performed.
3 APU CONTROL ON/OFF Connects and disconnects 24 V dc output to turret
switch circuits. Protected by CB.
4 APU CONTROL OUTPUT Lights when power is being provided to turret.
POWER light
5 APU LOCAL CONTROL Lights when REMOTE/LOCAL switch on APU panel is in
ONLY light LOCAL position.
6 WARNING APU Lights when EAPU has shut down due to excess water in
SHUTDOWN fuel-water separator.
FUEL-WATER
SEPARATOR light

Change 4 0043-56
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

REMOTE CONTROL PANEL - Continued

Key Control or Indicator Function

7 WARNING APU Lights when EAPU has shut down because of low oil
SHUTDOWN OIL PRESS pressure.
LOW light
8 PANEL LIGHTS PUSH TO Lights all panel lamps on EAPU section of remote control
TEST switch panel when pushed.
9 PANEL LIGHTS dimmer Brightens and dims panel lamps in EAPU section of
switch remote control panel.
10 PUSH TO TEST switch Lights MCD CONTROL UTILITY OUTLET lamp when
pushed. Cannot be dimmed.
11 MCD CONTROL UTILITY Lights when power is applied to Missile
OUTLET light Countermeasuring Device (MCD) utility outlet.
12 MCD CONTROL UTILITY Connects and automatically disconnects power to MCD
OUTLET ON/OFF CB control utility outlet. If CB trips, MCD CONTROL UTILITY
OUTLET light (11) will not come on.

0043-57 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

EXTERNAL AUXILIARY POWER UNIT (EAPU) CONTROLS AND INDICATORS

(POWER INTERFACE BOX)

Key Control or Indicator Function

1 ON/CB2/OFF switch Connects and automatically disconnects power to MCD

control utility outlet.
2 CB2 OPEN light Lights when CB2 is open.
NOTE: CB1 is internal and is automatic. No manual
action is required except to correct for fault or overload
condition.

Change 4 0043-58
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

MISCELLANEOUS CONTROLS AND INDICATORS

Key Control or Indicator Function

1 Gun travel lock Mechanically locks main gun for travel (prevents main
gun from elevating or depressing).
2 Replenisher Contains hydraulic fluid and shows fluid level of main
gun recoil mechanism.
3 Emergency ENGINE Allows tank engine to be shut down if SHUTOFF switch
shutoff T-handle on DMP, see REDESIGNED HULL NETWORKS BOX,
does not work (main gun must be positioned over left
front fender).

0043-59 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

COUNTER RCIED (RADIO CONTROLLED IMPROVISED EXPLOSIVE DEVICE)

ELECTRONIC WARFARE (CREW II)

Key Control or Indicator Function

1 CREW II RCU Provides ability to turn system on and off from inside
turret.
2 CREW II system indicator Indicates when power to CREW II system is on, when
lights system is actively jamming, and when system has a fault.
3 Zeroize Switch Used to Zeroize CREW II system.
4 Run/Standby Switch Turns primary unit into Run or Standby mode.
5 Power Switch Turns power on and off or places CREW II system in
remote.
6 CREW II PDA Provides feedback on when system detects Electronic
Warfare (EW) attacks, and what countermeasures were
employed.

Change 4 0043-60
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

STABILIZED COMMANDER'S WEAPON STATION (SCWS)

Key Control or Indicator Function

1 Elevation Mode Select Provides the commander capability to select between

Lever (EMSL) manual and power elevation control of the commander's
weapon.
2 Manual Elevation Control Provides the commander manual control of weapon
Handle (MECH) elevation whenever EMSL is in MANUAL (down)
position.
3 Manual Trigger Assembly Provides the commander ability to fire the weapon
(MTA) manually.
4 Manual Azimuth Drive Enables the commander to traverse SCWS manually
Assembly (MADA) when MADA is placed in manual mode.

0043-61 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

STABILIZED COMMANDER'S WEAPON STATION (SCWS) - Continued

Key Control or Indicator Function

5 Power Azimuth Drive Provides the commander the capability to engage or

Assembly Select Lever disengage the power azimuth drive assembly's mesh
(PADASL) with the cupola ring gear.
6 SCWS Control Handle Enables the commander to operate the SCWS in
Assembly (SCHA) powered mode.
7 Safe/Arm Module (SAM) Provides the commander the capability to arm or safe
the commander's weapon, select normal and emergency
modes of operation, adjust normal mode drift, and
combat override system inhibits.

Change 4 0043-62
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

SCWS SAFE/ARM MODULE (SAM)

Key Control or Indicator Function

1 WEAPON MODE SAFE/ The SAFE/ARM toggle switch is a three-position switch

ARM Switch with return-to-center momentary positions. When the
SAFE/ARM switch is moved up to the ARM position, the
commander's weapon is armed, and the SCHA trigger is
activated. When the SAFE/ARM switch is moved down to
the SAFE position, the electrical circuit to the SCHA is
switched off.
2 ARMED Indicator Light Illuminates whenever SAFE/ARM switch is moved to
ARM position, SAM firing circuit to commander's weapon
is armed.
3 FIRE CONTROL MODE Provides the commander the option of operating SCWS
NORMAL/EMERGENCY in NORMAL mode (stabilized) or EMERGENCY mode
Switch (powered, but not stabilized).
4 FIRE CONTROL MODE Indicates to commander which mode, green for
Indicator Lights NORMAL, yellow for EMERGENCY, the SCWS is
operating in.
5 COMBAT OVERRIDE Provides commander the ability to override SCWS
Pushbutton movement and firing inhibits.
6 COMBAT OVERRIDE Lights when COMBAT OVERRIDE has been activated.
Indicator Light

0043-63 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

SCWS SAFE/ARM MODULE (SAM) - Continued

Key Control or Indicator Function

7 NORMAL MODE DRIFT Provides commander the means to compensate for

Adjustment Knobs SCWS normal mode drift. This is accomplished using
one control knob for elevation, and one for azimuth. Both
knobs have push-to-turn functionality.
8 PANEL LIGHTS PUSH TO Depression of PANEL LIGHTS PUSH TO TEST
TEST Pushbutton pushbutton causes all panel indicator lights to illuminate.
9 PANEL LIGHTS Clockwise rotation of PANEL LIGHTS brightness
Brightness Adjustment adjustment knob increases the intensity of all the SAM
Knob panel indicator lights. Counterclockwise rotation of
PANEL LIGHTS knob shall decrease the intensity of all
the assembly panel indicator lights. Full
counterclockwise rotation shall extinguish all indicator
lights.

Change 4 0043-64
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

SCWS CONTROL HANDLE ASSEMBLY (SCHA)

Key Control or Indicator Function

1 4-Way Position Switch Enables commander to traverse and elevate SCWS

when in normal or emergency power mode. Moving the
switch to the left traverses SCWS left. Moving the switch
to the right traverses the SCWS right. Moving the switch
up depresses the weapon. Moving the switch down
elevates the weapon.
2 Control Handle Track/Slew Enables commander to select between tracking and
Switch slewing of SCWS in elevation or azimuth. When Track/
Slew switch is in Track (up) position, the rate of weapon
elevation/depression is from 0.25 mils/sec to 50 mils/sec,
and the rate of azimuth movement clockwise and
counterclockwise is from 0.25 mils/sec to 100 mils/sec.
When Track/Slew switch is in Slew (down) position, the
rate of elevation/depression is at minimum rate 900
mils/sec, and the rate of azimuth movement clockwise
and counterclockwise is also at a minimum rate 900
mils/sec.
3 Intercom/Radio Control Enables commander to communicate internally with
Switch crewmembers, or transmit.

0043-65 Change 4
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

SCWS CONTROL HANDLE ASSEMBLY (SCHA) - Continued

Key Control or Indicator Function

4 Palm Switch Activates SCWS, enabling commander to operate and

fire SCWS under power, and in NORMAL or
EMERGENCY modes.
5 Trigger Switch Enables commander to electrically fire the commander's
weapon whenever palm switch is engaged.
6 Slew Pushbutton (If When pressed and released, activates Slew To Cue
Equipped) (STC) function. Main gun and turret will traverse and
aline onto designated point in alinement with reticle in
CWS/RTS.

Change 4 0043-66
 TM 9-2350-264-10-1 0043

DESCRIPTION AND USE OF CONTROLS AND INDICATORS - Continued

SCWS MANUAL CONTROLS

Key Control or Indicator Function

1 Manual Azimuth Drive Enables commander to traverse and elevate SCWS

Assembly Handle when in normal or emergency power mode.
(MADAH)
2 Manual Azimuth Mode Enables the commander to traverse the SCWS manually.
Select Lever (MAMSL) Pushing MAMSL forward disengages Manual Azimuth
Driver Assembly (MADA) from the cupola race ring.
Pulling MAMSL rearward re-engages MADA with cupola
race ring.
3 Manual Trigger Assembly Enables commander to fire weapon manually.
(MTA)
4 Manual Elevation Control Retains manual elevation control handle in the stowed
Handle Lock (MECHL) position (shown above) to ensure handle does not move
freely. Disengages when SCWS is in manual mode.

END OF WORK PACKAGE

0043-67/68 blank Change 4
 TM 9-2350-264-10-1

CHAPTER 3

OPERATOR INSTRUCTIONS: ALL STATIONS

 ENTER TANK THROUGH LOADER'S HATCH - Continued

TM 9-2350-264-10-1 0044

OPERATOR MAINTENANCE
ENTER TANK THROUGH LOADER'S HATCH

INITIAL SETUP:
References
Vol 2, WP 0179

WARNING
If main gun is to the front of tank, climb on tank from left side only to keep from
getting in laser or machinegun firing path. Notify driver before climbing on tank
if engine is running.

1. Climb on tank using track skirt step (1) and hand hold (2) at left front (3), or using skirt step
(1) at right front (4) of hull.

CAUTION

If transponder antenna (5) is stepped on, it may break. While climbing on tank,
do not step on transponder antenna (5).

2. Open loader's hatch (Vol 2, WP 0179).

3. Enter tank through loader's hatch feet first. Step on loader's seat post, then on turret floor.
END OF TASK

END OF WORK PACKAGE

0044-1/2 blank Change 1
 OPERATE INTERCOM - Continued

TM 9-2350-264-10-1 0045

OPERATOR MAINTENANCE
OPERATE INTERCOM

INITIAL SETUP:
References References (continued)
WP 0046 Vol 2, WP 0237
Vol 2, WP 0236

NOTE
If your tank has intercommunication control set (1), go to (WP 0046) Intercom
(C-12357/VRC).

1. Operate amplifier AM 1780/VRC (Vol 2, WP 0236).

NOTE
If the Combat Vehicle Crewman (CVC) cord (2) has only one plug, it can be
attached to either connector (3) or (4).

2. Put on CVC helmet (5) and connect cables (6) to intercom control box (7) (Vol 2, WP 0237).

3. Set intercom MONITOR switch lever (8) to INT ONLY.

4. Set CVC helmet switch (9) in rear position.

0045-1
 TM 9-2350-264-10-1 0045

OPERATE INTERCOM - Continued

5. If you are in driver's station, press either button (10) on steer-throttle control (11).
6. If you are in gunner's station, press foot switch (12) on foot rest (13).

7. If you are in commander's station, grasp commander's protective guard (14) with left hand,
push and hold switch (15) with left thumb to INT.
8. Talk into CVC microphone and turn knob (16) to adjust volume.
9. Release switch (10, 12, or 15).
10. Set intercom MONITOR switch lever (8) to position for use as ordered by tank commander.

END OF TASK

END OF WORK PACKAGE

0045-2
 OPERATE INTERCOM (C-12357/VRC) - Continued

TM 9-2350-264-10-1 0046

OPERATOR MAINTENANCE
OPERATE INTERCOM (C-12357/VRC)

INITIAL SETUP:
References References (continued)
Vol 2, WP 0241 Vol 2, WP 0242

1. Operate indicator control CD-82/VRC (Vol 2, WP 0241).

2. Put on Combat Vehicle Crewman (CVC) helmet (1). To connect cable (2) to intercommuni-
cation control set (3), go to OPERATE COMMUNICATIONS SYSTEM (CONNECT CVC
HELMET TO INTERCOMMUNICATION CONTROL SET C-12357/VRC) (Vol 2, WP 0242).

3. If equipped with Tank Infantry Phone (TIP), grasp handle and turn counterclockwise
3/4-turn to open TIP access door. Connect cable (4) to intercommunication control set (3).

4. Set WORK switch (5) on intercommunication control set (3) to INT.

5. Set INTERCOM switch (6) on intercommunication control set (3) as needed:

a. Push-To-Talk (PTT) position (7) - Requires setting CVC PTT helmet switch (8) to rear
position.

NOTE
The following are not options for TIP.

b. LIVE position - Microphone continuously active for intercom.

c. VOX position - Microphone activated for intercom by crewman's voice.

d. O/R position - Hold to operate intercom, overrides all other traffic.

6. Set VOLUME switch (9) on intercommunication control set (3) to yellow position.

0046-1
 TM 9-2350-264-10-1 0046

OPERATE INTERCOM (C-12357/VRC) - Continued

7. If operating from loader's station, set CVC PTT helmet switch (8) in rear position if PTT is
selected.

8. If you are in driver's station and PTT (7) on intercommunication control set (3) has been
selected, press either button (10) on steer-throttle control (11).

9. If you are in gunner's station and PTT (7) on intercommunication control set (3) has been
selected, press foot switch (12) on foot rest (13).

10. If you are in commander's station and PTT (7) on intercommunication control set (3) has
been selected, grasp commander's protective guard (14) with left hand, push and hold
switch (15) with left thumb to INT.

0046-2
 TM 9-2350-264-10-1 0046

OPERATE INTERCOM (C-12357/VRC) - Continued

11. If you are at tank infantry phone, and PTT (7) on intercommunication control set (3) has
been selected, grasp the handset (16) and push and hold button (17) to talk.

12. Talk into CVC microphone or handset and turn switch (9) to adjust volume.

13. Release switch (10, 12, 15), or button (17).

NOTE
To operate intercom in PTT mode (7) with WORK switch (5) in A or B, CVC hel-
met PTT switch (8) must be in rear position.

14. Set WORK switch (5) on intercommunication control set (3) to position for use as needed:

a. INT position - Operator can listen and talk on intercom; no radio transmission.

b. A position - Operator can listen and talk on intercom and Radio A (if radio access is
programmed on indicator control CD-82/VRC).

c. B position - Operator can listen and talk on intercom and Radio B (if radio access is
programmed on indicator control CD-82/VRC).

0046-3
 TM 9-2350-264-10-1 0046

OPERATE INTERCOM (C-12357/VRC) - Continued

15. Set MONITOR switch (18) on intercommunication control set (3) to position for use as
needed:

a. WK position - Deactivates monitor function.

b. A position - Operator monitors Radio A (if radio access is programmed on indicator

control CD-82/VRC).

c. B position - Operator monitors Radio B (if radio access is programmed on indicator

control CD-82/VRC).

d. ALL position - Operator monitors Radios A and B (if radio access is programmed on
indicator control CD-82/VRC).
END OF TASK

END OF WORK PACKAGE

0046-4
 OPERATE DOME LIGHT - Continued

TM 9-2350-264-10-1 0047

OPERATOR MAINTENANCE
OPERATE DOME LIGHT

INITIAL SETUP:
Not Applicable

NOTE
• Vehicle master power and turret power must be on to operate driver's dome
light (1).

• Make sure knob (2) on dome light (1) is fully counterclockwise.

1. Turn knob (2) clockwise to turn dome light (1) on. Continue to turn knob (2) clockwise until
light is bright enough.

2. Turn knob (2) counterclockwise to dim the light.

3. Turn knob (2) all the way counterclockwise to turn dome light (1) off.

END OF TASK

END OF WORK PACKAGE

0047-1/2 blank
 TM 9-2350-264-10-1 0048

OPERATOR MAINTENANCE
OPERATE PORTABLE FIRE EXTINGUISHERS

INITIAL SETUP:
Not Applicable

WARNING

• Do not use water to put out tank fires.

• Metal objects may be hot. Use care not to burn hands.

NOTE
Use portable fire extinguisher (1) to fight fire if engine or crew compartment
extinguishers did not work or did not put fire out completely.

1. Get portable fire extinguisher (1) from rack (2) next to commander's seat (3) or from left
cargo rack box (4).

2. Break wire and pull out pin (5).

3. Take portable fire extinguisher (1) as close to fire as possible and point nozzle (6) directly at
base of flames.

0048-1
 TM 9-2350-264-10-1 0048

OPERATE PORTABLE FIRE EXTINGUISHERS - Continued

WARNING
• Fire extinguisher agent will irritate eyes and throat. Avoid contact with fire
extinguisher agent.

• If fire is outside tank, approach fire with wind at your back to avoid burns.

4. Press down and hold trigger (7) to shoot portable fire extinguisher (1) at fire.

NOTE
If fire was inside tank, open all hatches and let tank air out for 5 minutes to
remove all extinguisher fumes.

5. Put pin (5) back into trigger (7).

6. Tag portable fire extinguisher (1) with word EMPTY.

7. Replace empty portable fire extinguisher (1).

END OF TASK

END OF WORK PACKAGE

0048-2
 EXIT TANK - Continued

TM 9-2350-264-10-1 0049

OPERATOR MAINTENANCE
EXIT TANK

INITIAL SETUP:
References
Vol 2, WP 0234

1. Exit tank through loader's hatch.

2. Close and lock loader's hatch (Vol 2, WP 0234).

CAUTION

If transponder antenna (1) is stepped on, it may break. While climbing on tank,
do not step on transponder antenna (1).

3. Dismount tank over front slope.

END OF TASK

END OF WORK PACKAGE

0049-1/2 blank
 TM 9-2350-264-10-1

CHAPTER 4

OPERATOR INSTRUCTIONS: DRIVER'S STATION

PREPARE STATION FOR OPERATION (ENTER DRIVER'S STATION) - Continued

TM 9-2350-264-10-1 0050

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ENTER DRIVER'S STATION)

INITIAL SETUP:
References References (continued)
WP 0044 Vol 2, WP 0194
WP 0089

1. Mount and enter tank through loader's hatch (WP 0044).

NOTE
Main gun must be over rear deck to enter driver's station from turret.

2. Make sure turret lock is set to LOCKED (Vol 2, WP 0194).

3. Swing loader's safety guard open (WP 0089).

WARNING
Do not extend any part of body from turret into driver's station unless turret lock
is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is traversed while
you are between turret and driver's station.

4. Make sure headrest (1) is in up position. If not, move to up position.

5. Make sure upper seat back (2) is down. If seat back (2) is up, push lever (3) in and pull seat
back (2) down.

6. Move into driver's station feet first and sit in seat (4).

0050-1
 TM 9-2350-264-10-1 0050

PREPARE STATION FOR OPERATION (ENTER DRIVER'S STATION) - Continued

7. Make sure parking brake is set by pressing parking brake pedal (5) with foot.

8. Make sure CREW FIRE extinguisher T-handle (6) and ENGINE FIRE extinguisher T-handle
(7) are seated in mount. If not, notify field maintenance.

END OF TASK

END OF WORK PACKAGE

0050-2
PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

TM 9-2350-264-10-1 0051

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS)

INITIAL SETUP:
References References (continued)
WP 0047 Vol 3, WP 0375
WP 0064 Vol 3, WP 0407
WP 0087 Vol 3, WP 0473
Vol 2, WP 0269
Vol 2, WP 0350

WARNING
If equipped with the Stabilized Commander's Weapon Station (SCWS), the
SCWS is powered when vehicle master power is turned on. SCWS can move
suddenly and injure personnel or damage equipment.

CAUTION

Ensure External Auxiliary Power Unit (EAPU) OUTPUT POWER switch is set to
OFF to prevent electrical system lock-up (Vol 2, WP 0269).

1. Make sure the following switches on the Driver's Master Panel (DMP) (1) are in the OFF
position:

a. PERSONNEL HEATER (2)

b. NIGHT PERISCOPE (3)

c. BILGE PUMP (4)

d. SMOKE GENERATOR (5)

e. LIGHTS (6)

f. HI BEAM (7)

g. TACTICAL IDLE (8)

0051-1 Change 3
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

2. Make sure the following conditions on the Driver's Instrument Panel (DIP) (9) are OK:

a. TANK SELECTOR SWITCH (10) is set to REAR.

b. FIRE EXTINGUISHER 2ND SHOT red switch cover (11) is closed.

c. All gages show the lowest (left) position. If not, notify field maintenance.

3. Set dome light to off position (WP 0047).

NOTE
If parking brake hydraulic system pressure is below 1000 psi, auxiliary hydrau-
lic pump will come on.

4. Pull out and set VEHICLE MASTER POWER switch (12) to ON.

NOTE
When VEHICLE MASTER POWER switch (12) is turned on, VEHICLE MAS-
TER POWER light (13) and MASTER CAUTION light (14) will light. If brakes
are applied the PARKING/SERVICE BRAKES light (15) and MASTER WARN-
ING light (16) will also light. These are the only lights that will light, unless a
malfunction has occurred.

5. When VEHICLE MASTER POWER light (13) lights, let go of VEHICLE MASTER POWER
switch (12). VEHICLE MASTER POWER switch (12) will go back to center position. If
VEHICLE MASTER POWER light (13) does not light, do Troubleshooting, (Vol 2, WP 0350).

Change 3 0051-2
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

6. Check Hull Networks Box (HNB) (17) as follows:

NOTE
• If vehicle is equipped with Redesigned Hull Networks Box (RHNB) (18), go
to step 7.

• Chart (19) inside cover (20) of HNB (17) shows which circuit each circuit
breaker protects.

a. Open cover (20) of HNB (17).

b. Make sure all circuit breakers including UTILITY OUTLET circuit breaker are set to ON.
If circuit breaker will not stay to ON after being set one time, notify field maintenance.

c. Go to step 8.

0051-3 Change 3
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

7. Check RHNB (18).

NOTE
• A Power-Up Self-Test (PUST) is performed automatically when power is
applied to RHNB (18). Do not press MODE key (21) on Status Display Con-
troller (SDC) (22) before PUST is complete.

• During the PUST, Status Message Display (SMD) character lights (23),
ALERT light (24), and module indicator lights (25) will be lit. The RHNB (18)
indicator light (26) will remain lit upon completion of the PUST. ALERT light
(24) will remain lit only if an electronic or manual circuit breaker is off or
tripped, or a fault is detected. If all circuit breakers are on and no faults are
detected, SMD (27) will display SYSTEM VOLTAGE = 23.4v ENGINE ETI =
X. Xhr (28).

• If nothing is displayed on SMD (27)

Change 3 0051-4
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

a. If ALERT light is lit, go to step 7c.

b. If SYSTEM VOLTAGE = 23.4v ENGINE ETI = X. Xhr (28) is displayed on SMD (27) and
ALERT light (24) is not lit, go to step 8.

NOTE
• Down key (29) must be pressed to display fault messages first on SMD (27).
Pressing up key (30) will display circuit breaker status first, and you must
scroll through all the circuit breakers to view the fault messages.

• If any key on the SDC (22) does not work correctly, perform manual key test
(Vol 3, WP 0473).

c. If ALERT light (24) is lit, press down key (29) on SDC (22) and do the following:

d. If any one of six fault messages (31) appear on SMD (27), press ACK key (32) to
acknowledge fault message. Check for other fault messages by pressing down key
on SDC (22), record fault message, then do Troubleshooting (Vol 2, WP 0350).

e. If an electronic circuit breaker is tripped, press ON/OFF key (33) to turn circuit breaker
off. When OFF is displayed on the SMD (27), press ON/OFF key (33) to turn circuit
breaker on. If circuit breaker does not turn on, power down hull systems (WP 0087),
then do Troubleshooting, (Vol 2, WP 0350).

f. If a manual circuit breaker is off, turn circuit breaker on. If manual circuit breaker can-
not be turned on, do Troubleshooting, (Vol 2, WP 0350).

0051-5 Change 3
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

g. If any circuit breaker is to be left off, press ACK key (32) to acknowledge circuit breaker
status. Circuit breaker will remain in the off state, and ALERT light (24) will go out.

8. Check Hull Power Distribution Box (HPDB) (34) as follows:

NOTE
Chart (35) on HPDB (34) shows which circuit each circuit breaker protects.

a. Open cover (36) of HPDB (34).

b. Make sure all circuit breakers are set to ON. If circuit breaker will not stay to ON after
being set one time, notify field maintenance.

c. Close cover (36).

Change 3 0051-6
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

9. Check that following lights are not lit: PERSONNEL HEATER (37), NIGHT PERISCOPE
(38), BILGE PUMP (39), SMOKE GENERATOR (40), and HI BEAM (41). If lit, notify field
maintenance.

10. Check that red PARKING/SERVICE BRAKES light (15) on DMP (1) and MASTER WARN-
ING light (16) on Driver's Alert Panel (DAP) (42) are lit. If not, do Troubleshooting (Vol 2,
WP 0350).

11. Press and hold PANEL LIGHTS TEST pushbutton (43).

12. Look at DMP (1), DIP (9), and DAP (42). All panel lights in operation on DMP (1), DIP (9),
and DAP (42) should be lit. On RHNB (18) equipped tanks, SMD character lights (23)
should illuminate to full brightness.

0051-7 Change 3
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

13. Release PANEL LIGHTS TEST pushbutton (43) and replace lights that failed test (Vol 3,
WP 0375). The MASTER CAUTION light (14) will remain lit.

14. Depress RESET pushbutton (44) on DAP (42). MASTER CAUTION light (14) will shut off. If
not, notify field maintenance.

15. Adjust brightness of lights on DMP (1), DIP (9), and DAP (42):

a. Watch VEHICLE MASTER POWER light (13).

Change 3 0051-8
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

b. Turn PANEL LIGHTS knob (45) clockwise to make lights brighter. If lights do not get
brighter, notify field maintenance.

c. Turn PANEL LIGHTS knob (45) counterclockwise to dim lights. If lights do not dim,
notify field maintenance.

NOTE
DAP lights are reset to bright when VEHICLE MASTER POWER switch (13) is
set to ON.

16. Adjust brightness of lights on DAP (42):

a. Watch MASTER WARNING light (16).

b. If light (16) is too bright, push PNL DIM pushbutton (46). This will allow PANEL LIGHTS
knob (45) to control brightness of DAP (42) lights.

c. Turn PANEL LIGHTS knob (45) clockwise to make lights brighter. If lights do not get
brighter, notify field maintenance.

d. Turn PANEL LIGHTS knob (45) counterclockwise to dim lights. If lights do not dim,
notify field maintenance.

17. Look at ELECTRICAL SYSTEM voltmeter gage (47):

a. Needle (48) should show 23 to 29 volts (in the green band).

b. If needle (48) shows 18 to 23 volts (in the yellow band), yellow LOW BAT CHARGE
light (49) will be lit. Do Troubleshooting (Vol 2, WP 0350).

0051-9 Change 3
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

c. If needle (48) shows below 18 volts (in the red band), or more than 29 volts (in the yel-
low band), notify field maintenance.

18. Check that CABLE DISCONNECTED light (50) is not lit. If light (50) is lit, do Troubleshoot-
ing (Vol 2, WP 0350).

19. Check that CIRCUIT BREAKER OPEN light (51) is not lit. If light (51) is lit, do Troubleshoot-
ing (Vol 2, WP 0350).

20. Check fuel level:

a. Push in and set TANK SELECTOR switch (10) to RIGHT FRONT.

b. Read amount of fuel in right front tank on gage (52).

c. Push in and set TANK SELECTOR switch (10) to LEFT FRONT.

d. Read amount of fuel in left front tank on gage (52).

Change 3 0051-10
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

e. Push in and set TANK SELECTOR switch (10) to REAR.

NOTE
LOW FUEL LEVEL light (53) should light when rear tank level is down to 1/8-full.
If LOW FUEL LEVEL light (53) is not lit when gage (52) shows rear tank level of
less than 1/8-full, or if LOW FUEL LEVEL light (53) is lit when gage (52) shows
rear tank level of more than 1/8-full, notify field maintenance.

f. Read amount of fuel in rear tank on gage (52).

g. Fuel tank if necessary (Vol 3, WP 0407).

h. If LOW FUEL LEVEL light (53) lights and fueling cannot be done now, transfer fuel
(WP 0064).

0051-11 Change 3
 TM 9-2350-264-10-1 0051

PREPARE STATION FOR OPERATION (POWER UP HULL SYSTEMS) - Continued

CAUTION
If tank must be operated before a parking brake system bleed-off problem is
corrected, set VEHICLE MASTER POWER switch (12) to ON before releasing
parking brake . The auxiliary hydraulic pump will come on and this will keep
hydraulic pressure from dropping too low to set parking brake.

NOTE
Some drop, or bleed-off, in the parking brake system hydraulic pressure is nor-
mal. However, this bleed-off should be so slow that driver cannot see a change
on parking brake system hydraulic pressure gage (54) if tank has been parked
for 4 hours or less.

21. Check hydraulic pressure gage (54) for bleed-off. If tank has been parked for less than 4
hours and hydraulic pressure gage (54) shows a drop in pressure, notify field maintenance.
Normal reading on hydraulic pressure gage (54) during operation is 1200 psi to 1800 psi.

END OF TASK

END OF WORK PACKAGE

Change 3 0051-12
PREPARE STATION FOR OPERATION (CHECK INFLATABLE SEAL) - Continued

TM 9-2350-264-10-1 0052

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (CHECK INFLATABLE SEAL)

INITIAL SETUP:
Not Applicable

1. Look at pressure gage (1). Pressure gage (1) shows seal pressure.

2. To inflate seal, close bleed cock (2) and pump handle (3) until gage (1) reads 25 psi. If seal
will not inflate to 25 psi, notify field maintenance.

3. To deflate seal, unscrew bleed cock (2) to bleed air. Pressure on gage (1) should drop to
zero. If pressure does not drop to zero, notify field maintenance.
END OF TASK

END OF WORK PACKAGE

0052-1/2 blank
PREPARE STATION FOR OPERATION (ADJUST SEAT) - Continued

TM 9-2350-264-10-1 0053

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST SEAT)

INITIAL SETUP:
Not Applicable

1. To adjust seat (1) to desired height:

a. Push lever (2) in to unlock seat (1).

b. Use body weight to control seat (1) movement.

c. Let go of lever (2) to lock seat (1).

2. To adjust upper seat back (3):

a. Push lever (4) on left side of seat (1) in to unlock upper seat back (3).

b. Use body weight to control seat back (3) movement.

c. Let go of lever (4) to lock upper seat back (3).

3. To adjust lower back (lumbar) support (5):

a. Turn knob (6) counterclockwise to increase lower back support.

b. Turn knob (6) clockwise to decrease lower back support.

0053-1
 TM 9-2350-264-10-1 0053

PREPARE STATION FOR OPERATION (ADJUST SEAT) - Continued

NOTE
If tank has old style headrest (7), do steps 4a and 4b only. If tank has new style
headrest (8), do steps 4a, 4c, 4d, and 4e only.

4. To adjust headrest (7) or (8):

a. Pull down spring-loaded headrest (7) or (8) from stowed position.

b. Turn knob (9) to adjust headrest (7).

c. Squeeze spring latch (10).

NOTE
• Headrest (8) will lock in place when spring latch (10) is released.

• Headrest (8) will bind if even pressure is not applied when headrest (8) is
moved along posts (11).

d. With a hand on each side of headrest (8), slide headrest (8) up or down along posts
(11) to desired position. Release spring latch (10).

0053-2
 TM 9-2350-264-10-1 0053

PREPARE STATION FOR OPERATION (ADJUST SEAT) - Continued

e. Turn knob (12) to adjust headrest (8) forward or backward to desired position.

NOTE
Before placing headrest (8) in stowed position, adjust headrest (8) upward
along posts (11). This will allow headrest (8) to stow securely in the roof cavity.
END OF TASK

END OF WORK PACKAGE

0053-3/4 blank
PREPARE STATION FOR OPERATION (ADJUST PERISCOPES) - Continued

TM 9-2350-264-10-1 0054

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST PERISCOPES)

INITIAL SETUP:
Not Applicable

1. Grasp knobs (1) on sides of periscope (2).

2. Turn knobs (1) counterclockwise to loosen mirror (3).

3. Move mirror (3) so that front slope of tank shows in bottom of view through periscope (2).

4. Turn knobs (1) clockwise to tighten mirror (3).

5. Repeat steps 1 thru 4 for periscopes (4, 5) using similar knobs.

END OF TASK

END OF WORK PACKAGE

0054-1/2 blank
PREPARE STATION FOR OPERATION (OPEN HATCH) - Continued

TM 9-2350-264-10-1 0055

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (OPEN HATCH)

INITIAL SETUP:
Not Applicable

WARNING
• Driver's hatch (1) must be closed when firing main gun or when either azi-
muth or elevation turret stabilization mode is in operation to prevent personal
injury to driver.

• Do not operate driver's hatch (1) while vehicle is moving except in case of
emergency. Driver's hatch (1) is heavy and can injure you.

1. Reach over right shoulder with right hand and grasp hatch lifting handle (2).

2. Push and hold button (3).

3. Raise handle (2) until it engages in the stop, then let go of button (3) and handle (2).

4. Grasp hatch opening crank (4).

5. Squeeze hatch opening crank (4).

WARNING
Make sure hatch (1) locks in open position. Driver can be severely injured if
hatch (1) closes unexpectedly.

6. Turn hatch opening crank (4) clockwise until hatch (1) locks open.

7. Make sure hatch hold (5) is down.

0055-1
 TM 9-2350-264-10-1 0055

PREPARE STATION FOR OPERATION (OPEN HATCH) - Continued

WARNING
Maintain firm grip on ball (6) at end of seat manual control lever (7) and on
handle (8) when raising or lowering driver's seat (9). Lost fingers or other inju-
ries on driver's left hand may result if seat parts fail and hand slips off ball (6).

8. Grasp handle (8) and raise body weight from seat (9). Raise seat (9) for open hatch use by
firmly grasping ball (6) at end of seat manual control lever (7). Pull seat manual control
lever (7) toward seat (9) and back making sure seat manual control lever (7) is in locked
position, then let go of seat manual control lever (7) and lock seat (9).

END OF TASK

END OF WORK PACKAGE

0055-2
PREPARE STATION FOR OPERATION (ADJUST STEER-THROTTLE
CONTROL) - Continued
TM 9-2350-264-10-1 0056

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST STEER-THROTTLE CONTROL)

INITIAL SETUP:
References
WP 0080

NOTE
Steer-throttle control (1) can be adjusted to three operational positions and one
stow position. Do not operate the tank with steer-throttle control (1) in stow
position.

1. Grasp and hold center housing (2).

2. Pull out and hold large knob (3).

3. Pull or push steer-throttle control (1) to desired position.

4. Let go of large knob (3) to lock steer-throttle control (1).

5. Shake steer-throttle control (1) to make sure it is locked in place.

6. Twist throttle grips (4) and release to check springs. Grips should return to idle position
when released. If not, notify field maintenance.

7. Make sure shift control (5) is set to N (WP 0080).

END OF TASK

END OF WORK PACKAGE

0056-1/2 blank
PREPARE STATION FOR OPERATION (OPERATE DRAIN VALVES) - Continued

TM 9-2350-264-10-1 0057

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (OPERATE DRAIN VALVES)

INITIAL SETUP:
Not Applicable

NOTE
• Drain valves are normally left open when the tank is not being operated.
Drain valves must be closed before tank is operated.

• If your tank is equipped with dual drain valve handles (1), go to step 2.

1. Lift drain valve handle (2) upward to open drain valve. Go to step 3.

2. Lift both drain valve handles (1) to notches (3) to open drain valves.

3. Have other crewmember look under tank for liquid coming from drain valves.

4. Close drain valve by moving drain valve handle (2) downward to closed position, or if
equipped with dual handles, move both handles (1) out of notches (3) and push down.

END OF TASK

END OF WORK PACKAGE

0057-1/2 blank
 PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR
MISSION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL
UNIT (DECU) ENGINE HEALTH CHECK) - Continued
TM 9-2350-264-10-1 0058

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR
MISSION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL
UNIT (DECU) ENGINE HEALTH CHECK)

INITIAL SETUP:
Personnel Required References (continued)
Two WP 0090.1
References Vol 2, WP 0142
WP 0065 Vol 2, WP 0144
WP 0080 Vol 2, WP 0194
WP 0086

PREPARE FOR DECU ENGINE HEALTH CHECK

CAUTION
Do not apply parking or service brakes longer than one minute when vehicle is
operating at tactical idle (ENGINE TACTICAL IDLE switch set to ON or shift
control set to PIVOT) with shift control in any position except N. Transmission oil
temperature increases rapidly under those conditions and could cause damage
to transmission.

NOTE
This procedure is only for vehicles with DECU J5 (1), or if equipped, J7 (2). An
engine health check calculates the percentage of power available (Day Power)
and Mission Capability Power (MCP).

Day Power represents engine output power based on sea level barometric pressure (29.92 in
hg) and engine inlet air temperature (T1) for ambient temperatures below 87°F (31°C). For ambi-
ent temperature above 87°F (31°C), it is based on (T1) = 87°F (31°C). Day Power is provided in
percent.

0058-1 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PREPARE FOR DECU ENGINE HEALTH CHECK - Continued

MCP (MCP NO.) represents the percentage of engine power available. Once MCP NO. has
been provided, the affects of altitude (elevation) and ambient temperature for time of mission
are factored in and number is adjusted. This results in an MCP number for a specific tempera-
ture at a specified elevation, which can differ from Day Power percentage.

Change 3 0058-2
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PREPARE FOR DECU ENGINE HEALTH CHECK - Continued

1. Set VEHICLE MASTER POWER switch (3) on Driver's Master Panel (DMP) (4) to ON.

2. Ensure parking brake is set (WP 0080). PARKING/SERVICE BRAKES light (5) on DMP (4)
should be lit.

3. Traverse turret (Vol 2, WP 0142) or (Vol 2, WP 0144) and position the main gun over right
rear fuel cap. This provides access to DECU J5 (1), or if equipped DECU J7 (2).

4. Lock turret lock (Vol 2, WP 0194).

5. Perform Built-in Test (BIT) on DECU J5 (1), or if equipped, DECU J7 (2).

a. Hold ENGINE SHUTOFF switch (6) on DMP (4) in OFF (down) position.

0058-3 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PREPARE FOR DECU ENGINE HEALTH CHECK - Continued

b. Wait until FUEL CONTROL FAULTY light (7) on Driver's Instrument Panel (DIP) (8)
comes on.

Change 3 0058-4
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PREPARE FOR DECU ENGINE HEALTH CHECK - Continued

c. Press either pushbutton (9) in shorting cap (10), or inline pushbutton (11) when
equipped with Embedded Diagnostics (ED) harness 2W520-E (12) on DECU J5 (1) or
if equipped, J7 (2).

0058-5 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PREPARE FOR DECU ENGINE HEALTH CHECK - Continued

d. Release ENGINE SHUTOFF switch (6) on DMP (4).

NOTE
• If DECU does not display BIT results after pressing pushbutton (9) in short-
ing cap (10), or the inline pushbutton (11) when equipped with harness
2W520-E (12), repeat steps 5a thru 5d. If DECU BIT results are not dis-
played a second time, notify field maintenance.

• If fault is detected, fault code(s) will be displayed, followed by no more faults

(NO MORE FLTS). Record fault codes on DA Form 2404 or DA Form
5988-E, notify field maintenance and perform PREPARE STATION FOR
OPERATION (CLEAR DECU DISPLAY/CLEAR FAULT HISTORY)
(WP 0090.1) before proceeding to step 6.

• If Day Power is less than 60%, record percentage on DA Form 2404 or DA

Form 5988-E and notify field maintenance.

Change 3 0058-6
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PREPARE FOR DECU ENGINE HEALTH CHECK - Continued

e. If DECU J5 (1), or if equipped, J7 (2) is programmed with older software, BIT results
will be displayed as follows:

(1) Software issue (S/W ISS XXX).

(2) Percent Day Power (XX%).

(3) Mission Capability Power Number (MCP NO. XX).

(4) NO FAULTS, which indicates that fault history is clear, will be displayed.

f. If DECU J5 (1), or if equipped, J7 (2) is programmed with newer software, BIT results
will be displayed as follows:

(1) Software issue (S/W XXXX).

(2) Percent Day Power and date (XXX% DDMMYY).

(3) Mission Capability Power Number (MCP NO XX). Record the MCP number.

(4) NO FAULTS, which indicates that fault history is clear, will be displayed.

6. Make sure NBC MODE MAIN switch (14) on commander's panel (15) is set to off. If
equipped with Upgraded Tank Commander's Panel (UTCP) (16), make sure NBC MAIN
switch (17) is set to OFF.

END OF TASK

0058-7 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM DECU ENGINE HEALTH CHECK

1. Start engine (WP 0065).

2. Apply service brake (WP 0080).

3. Set ENGINE TACTICAL IDLE switch (18) on DMP (4) to ON.

NOTE
The FUEL CONTROL FAULTY light (7) on DIP (8) will light during DECU
ENGINE HEALTH CHECK procedure. When procedure is complete, FUEL
CONTROL FAULTY light (7) will go out.

4. Set shift selector (19) to Drive (D).

Change 3 0058-8
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM DECU ENGINE HEALTH CHECK - Continued

5. Press and release RESET pushbutton (20) on Driver's Alert Panel (DAP) (21). FUEL CON-
TROL FAULTY light (7) will come on.

6. Set shift selector (19) to Neutral (N).

7. Set ENGINE TACTICAL IDLE switch (18) on DMP (4) to OFF.

8. Release service brakes (WP 0080).

9. Shut down engine (WP 0086).

END OF TASK

0058-9 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT)

NOTE
Failure to hold ENGINE SHUTOFF switch (6) in SHUTOFF (down) position will
result in BIT failure. Ensure that ENGINE SHUTOFF switch (6) is held in SHUT-
OFF (down) position for duration of BIT.

1. Move shift selector (19) from Neutral (N) to pivot (PVT) and back to Neutral (N).

2. Hold ENGINE SHUTOFF switch (6) on DMP (4) in SHUTOFF (down) position.

NOTE
Messages in DECU display window (13) will scroll at five-second intervals end-
ing with the message NO MORE FLTS or NO FAULTS. If necessary, messages
can be displayed again by performing step 3 again.

Change 3 0058-10
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT) - Continued

3. Press either pushbutton (9) in shorting cap (10), or inline pushbutton (11) when equipped
with ED harness 2W520-E (12). Release pushbutton immediately upon hearing engine
starter engage or engine will not start.

0058-11 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT) - Continued

NOTE
• If DECU BIT results are not displayed in window (13) after pressing push-
button (9) in shorting cap (10) or inline pushbutton (11) when equipped with
harness 2W520-E (12), repeat steps 1 thru 3. If DECU BIT results are not
displayed a second time, notify field maintenance.

• If Day Power is less than 60%, record percentage on DA Form 2404 or DA

Form 5899-E and notify field maintenance.

4. Observe information displayed in window (13) on DECU and record results of BIT.

a. If DECU J5 (1), or if equipped, J7 (2) is programmed with older software, BIT results
will be displayed as follows:

(1) Software issue (S/W ISS XXX).

(2) Percent Day Power number (XX%). If Day Power is less than 60%, record percent-
age on DA Form 2404 or DA Form 5899-E and notify unit maintenance.

(3) Mission Capability Power number (MCP NO. XX).

(4) If a fault is detected, fault code(s) will be displayed, followed by no more faults (NO
MORE FLTS). Record fault codes on DA Form 2404 or DA Form 5899-E and notify
unit maintenance.

(5) If no faults were detected, NO FAULTS will be displayed.

b. If DECU J5 (1), or if equipped, J7 (2) is programmed with newer software, BIT results
will be displayed as follows:

(1) Software issue (S/W J7_XX_XX).

(2) Percent Day Power and date (XXX % DDMMYY). If Day Power is less than 60%,
record percentage on DA Form 2404 or DA Form 5899-E and notify unit mainte-
nance.

(3) Mission Capability Power number (MCP NO. XX).

(4) If a fault is detected, fault codes(s) will be displayed, followed by no more faults
(NO MORE FLTS). Record fault codes on DA Form 2404 or DA Form 5899-E and
notify unit maintenance.

(5) If no faults were detected, NO FAULTS will be displayed.

Change 3 0058-12
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT) - Continued

5. Use results from BIT and following procedure to determine engine's MCP at time of mis-
sion.

a. Determine altitude your location by referring to Table 1 below.

0058-13 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT) - Continued

b. From Table 2, locate along the top row the MCP NO. obtained from the BIT. Next, find
the anticipated ambient temperature where the mission will be performed. Where these
two numbers intersect is the MCP number adjusted for temperature. For example, if
the MCP number is 09, and expected temperature is 50 °, MCP corrected for tempera-
ture is 79%.
c. Next, find on Table 3 (Altitude Correction), the altitude you will be operating along the
top row. Locate the MCP along the left side of Table 3, and where the altitude and MCP
intersect is the MCP adjusted for that altitude. For example, you have determined that
your mission MCP corrected for temperature is 79%. If the mission takes place at
an altitude of 3500 feet, the MCP then becomes 70%.

Change 3 0058-14
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT) - Continued

0058-15 Change 3
 TM 9-2350-264-10-1 0058

PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER OR MIS-

SION CAPABILITY POWER - PERFORM DIGITAL ELECTRONIC CONTROL UNIT
(DECU) ENGINE HEALTH CHECK) - Continued

PERFORM BUILT-IN TEST (BIT) - Continued

END OF TASK

END OF WORK PACKAGE

Change 3 0058-16
OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

TM 9-2350-264-10-1 0059

OPERATOR MAINTENANCE
OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED)

INITIAL SETUP:
References References (continued)
WP 0051 WP 0085

POWER UP RVSS

1. Power up hull systems (WP 0051).

2. Power up Camera Control Unit (CCU) (1):

a. Lift protective cover (2) and move PWR switch to ON position.

b. Observe that PWR lamp (3) is illuminated.

c. Lower protective cover (2) (PWR switch will remain in ON position).

d. Check lamp operation by pressing LAMP TEST switch (4) on CCU (1). Observe that all
lamps illuminate. Report failed lamps to maintenance.

3. Power up and position Driver's Video Display (DVD) (5) for viewing:

a. Depress power (PWR) button (6).

b. Pull down and hold retaining knob (7).

c. Rotate DVD (5) horizontally from stowed position to viewing position.

0059-1 Change 4
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

POWER UP RVSS - Continued

d. Release retaining knob (7) to lock viewer in place.

NOTE
Ensure that camera debris shield (8) is closed whenever RVSS is not in use.
Failure to do so may result in damage to the camera lens.

Change 4 0059-2
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

POWER UP RVSS - Continued

4. Open camera debris shield (8) by depressing SHIELD open button (9) on CCU (1) momen-
tarily (1-2 seconds).

END OF TASK

CONFIGURE DRIVER'S VIDEO DISPLAY (DVD) FOR VIEWING

NOTE
CCU (1) default settings are set for Abrams variants. The CCU (1) does not
retain memory of user settings upon shut down, and will revert to default set-
tings when powered up.

1. Adjust screen image from CCU (1).

a. Adjust image polarity (POL) by depressing POL (10) once to select black hot and again
for white hot. Default polarity is white hot.

b. Adjust image brightness (BRIGHT) by depressing and holding (+) arrow (11) to
brighten image, and (-) down arrow (12) to dim image. BRIGHT +/- (13) will appear in
the right margin of the DVD screen (14).

0059-3 Change 4
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

CONFIGURE DRIVER'S VIDEO DISPLAY (DVD) FOR VIEWING - Continued

c. Adjust image contrast (CNTRST) from CCU (1) by depressing and holding (+) arrow
(15) to increase image contrast, and down (-) arrow (16) to decrease image contrast.
CNTRST +/- (17) will appear in the upper right margin of the DVD screen (14).

2. Adjust screen image with control options on DVD (5).

a. Adjust image brightness by repeatedly depressing up arrow (18) to increase bright-

ness, or down arrow (19) to decrease brightness.

Change 4 0059-4
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

CONFIGURE DRIVER'S VIDEO DISPLAY (DVD) FOR VIEWING - Continued

b. To black out the screen image and bezel display backlighting, depress the blackout but-
ton (BLK OUT) (20). To turn image and bezel display backlighting on, depress BLK
OUT button (20) once again.

NOTE
• If the variant identified in upper right hand corner of DVD screen (14) is not
ABRAMS (21), you will not get the correct overlay superimposed on the
screen. If this is the case, go to step 4 and reset the CCU to display the
Abrams overlay (22).

• When resetting the overlay to Abrams, if more than 5 seconds of inactivity

elapse between selection and storing a selected variant, the system will
automatically return to NORMAL mode.

3. Display overlay on DVD (5) screen image:

a. Depress/hold RESET/CONFIG button (23) momentarily on CCU (1). OVERLAY

SELECT (24) will appear on the DVD screen (14). It will flash on and off for a couple of
seconds and the overlay for Abrams (22) will appear on the DVD screen (14).

0059-5 Change 4
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

CONFIGURE DRIVER'S VIDEO DISPLAY (DVD) FOR VIEWING - Continued

b. To remove the overlay (22) from the DVD screen (14), repeat step 3a.

NOTE
There are eight overlays programmed into the CCU (1): four for a right-mounted
TCA, and four for a left-mounted TCA. Since the Abrams TCA is installed on the
right rear of the vehicle, if any variant other than ABRAMS (21) is shown on the
DVD (5), proceed with step 4.

4. Reset overlay to ABRAMS configuration:

a. Depress/hold RESET/CONFIG button (23) on CCU (1) until OVERLAY SELECT (24)
appears flashing on/off on DVD screen (14). Continue holding RESET/CONFIG button
(23) until OVERLAY SELECT (24) stops flashing on/off.

b. Once OVERLAY SELECT (24) stops flashing on/off, release RESET/CONFIG button
(23) momentarily, then depress RESET/CONFIG button (23) again to toggle through
the four variant choices (ABRAMS, BRADLEY, M113, and USMC), stopping when
ABRAMS (21) is visible in the upper right corner of DVD screen (14).

c. To save the selected variant configuration, repeat step 4a.

END OF TASK

Change 4 0059-6
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

UTILIZE DRIVER'S VISION ENHANCER (DVE) FOR REARWARD VIEWING

WARNING
Do not attempt to drive the tank forward while using the DVE (25) in the EXT
mode for rear viewing purposes. Serious injury or death to personnel, or dam-
age to equipment can result from improper usage.

1. Install and power up DVE (WP 0085).

2. To view RVSS TCA image on DVE (25), set VIDEO switch (26) on DVE (25) to EXT posi-
tion.

3. To drive the vehicle forward, or to observe activity to the front of the vehicle, set VIDEO
switch (26) on DVE (25) to SENSOR position.

END OF TASK

0059-7 Change 4
 TM 9-2350-264-10-1 0059

OPERATE REAR VIEW SENSOR SYSTEM (RVSS) (IF EQUIPPED) - Continued

POWER DOWN RVSS

NOTE
Ensure that camera debris shield remains closed whenever RVSS is not in use.

1. Depress debris SHIELD close button (27) on CCU (1), holding it momentarily (1-2 seconds).

2. Depress PWR button (6) to turn off DVD (5).

3. Lift protective cover (2) on CCU (1) and move PWR switch to OFF position.

4. Return DVD (5) to stowed position.

END OF TASK

END OF WORK PACKAGE

Change 4 0059-8
 TM 9-2350-264-10-1 0060

OPERATOR MAINTENANCE
OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE
EXTINGUISHER-AUTOMATIC MODE)

INITIAL SETUP:
Personnel Required References
Two WP 0080

NOTE
• VEHICLE MASTER POWER switch (1) must be set to ON for fire extin-
guisher system to operate automatically.

• 1st shot fire extinguisher bottle discharges automatically when engine fire is
detected.

1. When MASTER CAUTION light (2) and 1ST SHOT DISCHARGED light (3) light, notify tank
commander of engine fire.

2. If ENGINE FIRE light (4) is flashing and MASTER WARNING light (5) is lit, notify tank com-
mander that fire is still burning.

3. Turn tank to face into wind, if possible.

4. Have turret and gun moved so gun tube is over either side and driver can exit.

0060-1
 TM 9-2350-264-10-1 0060

OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE

EXTINGUISHER-AUTOMATIC MODE) - Continued

5. Twist throttle handgrips (6) forward to idle position.

6. Press service brake pedal (7) to stop tank.

7. Set shift control (8) to N (WP 0080).

8. Press parking brake pedal (9).

NOTE
• When 2ND SHOT switch (10) is moved to rear, engine will be shut off.

• 2nd shot fire extinguisher bottle will discharge about 18 seconds after 2ND
SHOT switch (10) is moved to rear.

9. On tank commander's order, open cover (11) over 2ND SHOT switch (10) and move 2ND
SHOT switch (10) to rear.

0060-2
 TM 9-2350-264-10-1 0060

OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE

EXTINGUISHER-AUTOMATIC MODE) - Continued

WARNING
If 2ND SHOT switch (10) is moved forward before 18 seconds have passed,
2nd shot fire extinguisher bottle will not discharge.

NOTE
If 2nd shot fire extinguisher bottle does not discharge or fire is still burning, do
steps 10, 11, 12, and 13.

10. Pull out and set engine SHUTOFF switch (12) to SHUTOFF and then let go.

11. Close cover (11) to move 2ND SHOT switch (10) forward.

12. After tank commander orders crew to exit tank, set VEHICLE MASTER POWER switch (1)
to OFF.

13. Exit tank.

0060-3
 TM 9-2350-264-10-1 0060

OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE

EXTINGUISHER-AUTOMATIC MODE) - Continued

NOTE
If 2nd shot fire extinguisher bottle does not discharge or fire is still burning, go
to step 14.

14. If 2nd shot fire extinguisher bottle does not discharge, pull ENGINE FIRE T-handle (13) to
discharge 2nd shot fire extinguisher bottle.

END OF TASK

END OF WORK PACKAGE

0060-4
 TM 9-2350-264-10-1 0061

OPERATOR MAINTENANCE
OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE
EXTINGUISHER-MANUAL MODE)

INITIAL SETUP:
Personnel Required References (continued)
Two WP 0080
References Vol 3, WP 0421
WP 0048

NOTE
Use manual mode when MASTER WARNING light (1) is on and ENGINE FIRE
light (2) is flashing and 1ST SHOT DISCHARGED light (3) did not come on.

1. Notify tank commander of engine fire.

2. Pull ENGINE FIRE T-handle (4).

3. Turn tank to face into wind, if possible.

4. Have turret and gun moved so gun tube is over either side and driver can exit.

5. Twist throttle handgrips (5) forward to idle position.

0061-1
 TM 9-2350-264-10-1 0061

OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE

EXTINGUISHER-MANUAL MODE) - Continued

6. Press service brake pedal (6) to stop tank.

7. Set shift control (7) to N (WP 0080).

8. Press parking brake pedal (8).

NOTE
• If fire still burns, notify tank commander and do steps 9 thru 13.

• VEHICLE MASTER POWER switch (9) must be set to ON for fire extin-
guisher to discharge electrically.

9. On tank commander's order, open cover (10) and move 2ND SHOT switch (11) to rear.

0061-2
 TM 9-2350-264-10-1 0061

OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE

EXTINGUISHER-MANUAL MODE) - Continued

WARNING
If 2ND SHOT switch (11) is moved forward before 18 seconds have passed,
2nd shot fire extinguisher bottle will not discharge.

NOTE
If 2nd shot fire extinguisher bottle does not discharge or fire is still burning, do
steps 10, 11, 12, and 13.

10. Pull out and set engine SHUTOFF switch (12) to SHUTOFF and then let go.

11. Close cover (10) to move 2ND SHOT switch (11) forward.

12. After tank commander orders crew to exit tank, set VEHICLE MASTER POWER switch (9)
to OFF.

0061-3
 TM 9-2350-264-10-1 0061

OPERATE FIRE EXTINGUISHERS (OPERATE ENGINE COMPARTMENT FIRE

EXTINGUISHER-MANUAL MODE) - Continued

13. Exit tank.

NOTE
If 2nd shot fire extinguisher bottle does not discharge or fire is still burning, go
to step 14.

14. If 2nd shot fire extinguisher bottle does not discharge, pull ENGINE-FIRE T-handle (13) to
discharge 2nd shot fire extinguisher bottle.

NOTE
If 2nd shot fire extinguisher bottle still does not discharge or fire is still burning,
use portable fire extinguishers (WP 0048).

15. If equipped, on tank commander's order, disconnect negative emergency disconnect link
(Vol 3, WP 0421).

16. Notify field maintenance as soon as possible.

END OF TASK

END OF WORK PACKAGE

0061-4
 TM 9-2350-264-10-1 0062

OPERATOR MAINTENANCE
OPERATE FIRE EXTINGUISHERS (OPERATE CREW COMPARTMENT FIRE
EXTINGUISHER-AUTOMATIC MODE)

INITIAL SETUP:
Personnel Required References (continued)
Two WP 0080
References Vol 3, WP 0421
WP 0048

WARNING
Tank must be evacuated within 5 minutes after fire extinguisher gas is released
in crew compartment. Extinguisher gas will irritate eyes and throat. Large
amounts of gas over long periods of time are hazardous for crewmembers.

NOTE
Crewmembers will know that crew compartment fire extinguisher has dis-
charged automatically by loud noise and cloud of gas in crew compartment.

1. When fire is detected in crew compartment or when crew compartment fire extinguisher dis-
charges, twist throttle handgrips (1) forward to idle position.

2. Notify tank commander and have turret and gun moved so gun tube is over either side, so
driver can exit.

3. Press service brake pedal (2) to stop tank.

4. Set shift control (3) to N (WP 0080).

5. Press parking brake pedal (4).

0062-1
 TM 9-2350-264-10-1 0062

OPERATE FIRE EXTINGUISHERS (OPERATE CREW COMPARTMENT FIRE

EXTINGUISHER-AUTOMATIC MODE) - Continued

NOTE
If electrical fire is suspected or detected within crew compartment, set
VEHICLE MASTER POWER switch (5) to OFF immediately and disconnect
engine fuel line quick-disconnect coupling (6).
6. Pull out and set engine SHUTOFF switch (7) to SHUTOFF and then let go.
7. Set VEHICLE MASTER POWER switch (5) to OFF.
8. Upon tank commander's order, exit tank.
9. If equipped, on tank commander's order, disconnect negative emergency disconnect link
(Vol 3, WP 0421). Use portable fire extinguisher to put fire out (WP 0048).
10. When fire is out, open all hatches and let tank air out for 5 minutes to remove all extin-
guisher gas. Notify field maintenance as soon as possible.

END OF TASK

END OF WORK PACKAGE

0062-2
 TM 9-2350-264-10-1 0063

OPERATOR MAINTENANCE
OPERATE FIRE EXTINGUISHERS (OPERATE CREW COMPARTMENT FIRE
EXTINGUISHER-MANUAL MODE)

INITIAL SETUP:
Personnel Required References (continued)
Two WP 0080
Vol 2, WP 0342
References
Vol 3, WP 0421
WP 0048

WARNING
Tank must be evacuated within 5 minutes after fire extinguisher gas is released
in crew compartment. Extinguisher gas will irritate eyes and throat. Large
amounts of gas over long periods of time are hazardous for crewmembers.

NOTE
Crew compartment fire extinguisher should discharge automatically. If crew
compartment fire is seen and fire extinguisher does not discharge automati-
cally, set extinguisher off manually.

1. Pull CREW FIRE T-handle (1).

2. Notify tank commander that there is a fire and have turret and gun moved to either side so
driver can exit.

3. Twist throttle handgrips (2) forward to idle position.

4. Press service brake pedal (3) to stop tank.

5. Set shift control (4) to N (WP 0080).

6. Press parking brake pedal (5).

0063-1
 TM 9-2350-264-10-1 0063

OPERATE FIRE EXTINGUISHERS (OPERATE CREW COMPARTMENT FIRE

EXTINGUISHER-MANUAL MODE) - Continued

NOTE
If electrical fire is suspected or detected within crew compartment, set
VEHICLE MASTER POWER switch (6) to OFF immediately and disconnect
engine fuel line quick-disconnect coupling (Vol 2, WP 0342).

7. Pull out and set engine SHUTOFF switch (7) to SHUTOFF and then let go.

8. Set VEHICLE MASTER POWER switch (6) to OFF.

9. Exit tank.

10. If equipped, on tank commander's order, disconnect negative emergency disconnect link
(Vol 3, WP 0421). Use portable fire extinguisher to put fire out (WP 0048).

11. When fire is out, open all hatches and let tank air out for 5 minutes to remove all extin-
guisher gas. Notify field maintenance as soon as possible.

END OF TASK

END OF WORK PACKAGE

0063-2
 TRANSFER FUEL - Continued

TM 9-2350-264-10-1 0064

OPERATOR MAINTENANCE
TRANSFER FUEL

INITIAL SETUP:
Not Applicable

CAUTION

• Transfer fuel only when LOW FUEL LEVEL light (1) comes on with tank on
level ground. FUEL gage (2) may falsely indicate low fuel if tank is not level,
allowing rear fuel tank to be overfilled.

• When fuel transfer is completed, or FUEL gage (2) reads between 1/4-full
and E, set TANK SELECTOR switch (3) to REAR to avoid running fuel pump
dry. Running fuel pump dry will damage it.

NOTE
• VEHICLE MASTER POWER switch (4) must be set to ON before fuel can be
transferred.

• The front fuel pump will start when TANK SELECTOR switch (3) is set to
RIGHT FRONT or LEFT FRONT and LOW FUEL LEVEL light (1) is lit. The
front fuel pump will automatically shut off when rear tank is 3/4-full.

• LOW FUEL LEVEL light (1) will light when rear fuel tank is 1/8-full. Light (1)
will go out by the time 3/8-full is indicated.

• FUEL gage (2) shows fuel level in tank selected with TANK SELECTOR
switch (3).

• Fuel from right front tank should be used before left front tank. Personnel
heater is supplied with fuel only from left front fuel tank and will not work
when left front tank is empty.

0064-1
 TM 9-2350-264-10-1 0064

TRANSFER FUEL - Continued

1. Push in and set TANK SELECTOR switch (3) to RIGHT FRONT to transfer fuel to rear tank
when LOW FUEL LEVEL light (1) is lit.

2. Push in and set TANK SELECTOR switch (3) to LEFT FRONT to transfer fuel to rear tank
when right front tank is nearly empty.

NOTE
When TANK SELECTOR switch (3) is set to REAR, fuel cannot be transferred
until LOW FUEL LEVEL light (1) comes on again.

3. Push in and set TANK SELECTOR switch (3) to REAR during engine start and normal
operation.

END OF TASK

END OF WORK PACKAGE

0064-2
 START ENGINE (START ENGINE - NORMAL) - Continued

TM 9-2350-264-10-1 0065

OPERATOR MAINTENANCE
START ENGINE (START ENGINE - NORMAL)

INITIAL SETUP:
Personnel Required References (continued)
Two Vol 2, WP 0263
Vol 2, WP 0269
References
WP 0051 Vol 2, WP 0275
WP 0066 Vol 2, WP 0284
WP 0067 Vol 2, WP 0350
Vol 2, WP 0225 PAM 40-501

WARNING
When inside the tank, within six ft (2 m) from in front of the turret, 50 ft (15 m)
from the side of the tank, or 100 ft (30.5 m) from the rear of the tank and the
engine is running, double hearing protection is required. Double hearing protec-
tion includes approved earplugs, earmuffs, CVC helmet, or headset. PAM
40-501, Table 6-1 provides additional guidance on approved earplugs.

CAUTION

• Muzzle Reference Sensor (MRS) can be damaged by exhaust heat if main

gun is over rear of tank when engine is running. If main gun is over rear of
tank when engine is started, make sure gunner moves main gun before two
minutes have passed.

• External Auxiliary Power Unit (EAPU) must be shut down (Vol 2, WP 0269)
or OUTPUT power ON/OFF switch in the OFF position (Vol 2, WP 0263)
prior to starting or slave starting vehicle. Damage to EAPU could occur while
starting or slave starting vehicle.

NOTE
If weather is extremely cold (below 0°F, -18°C), see (Vol 2, WP 0284) before
doing the steps below:

1. Power up hull systems (WP 0051).

2. Check with tank commander and make sure no one is behind the tank or near Nuclear, Bio-
logical, and Chemical (NBC) system exhaust area.

0065-1 Change 1
 TM 9-2350-264-10-1 0065

START ENGINE (START ENGINE - NORMAL) - Continued

3. Make sure shift control (1) is set to N.

NOTE
• If tank commander's panel is part number 12549797, NBC main system will
not turn on automatically when engine starts.

• Have tank commander check tank commander's panel for CKT BKR OPEN
light to insure it is not lit.

4. If tank commander's panel is part number 9376322 or 9377879 have loader set Turret Net-
works Box (TNB) circuit breaker CB3 to OFF (Vol 2, WP 0225).

Change 1 0065-2
 TM 9-2350-264-10-1 0065

START ENGINE (START ENGINE - NORMAL) - Continued

WARNING

• Do not start engine unless tank commander has clear view of area around
tank. Tank commander must warn personnel to stay away from rear of tank
and NBC system exhaust area on left side of tank. Personnel can be burned
by engine and NBC system exhaust.

• Make sure steer-throttle control (2) is centered before starting engine. If

steer-throttle control (2) is turned left or right, tank will pivot when PUSH TO
START pushbutton (3) is pressed and might injure someone.

• Do not leave driver's station after engine is started.

• If hatches are closed with engine running, turn NBC main system on (Vol 2,
WP 0275) for about 5 minutes every hour. When hatches are closed, carbon
monoxide can build up causing injury or death.

CAUTION

Make sure TURRET POWER switch (4) on commander's panel (5) has been
set to OFF. If equipped with Upgraded Tank Commander's Panel (UTCP) (6),
make sure TUR pushbutton (7) is OFF. Damage to electrical components can
result from using engine starter when turret power is on.

0065-3 Change 1
 TM 9-2350-264-10-1 0065

START ENGINE (START ENGINE - NORMAL) - Continued

NOTE
• Notify tank commander before starting engine.

• Start sequence is automatic after PUSH TO START pushbutton (3) is

pressed.

5. Press in and hold PUSH TO START pushbutton (3) no less than 3 seconds and then let go.

CAUTION

Do not attempt any further starts of vehicle with the following symptoms. Seri-
ous engine damage may result.
• Engine aborts start but ABORT light (8) does not come on.

• Engine starts but no throttle (9) response, no rpms on rpm gage (10), and no
FUEL CONTROL FAULTY light (11) on.

• If you get these symptoms during engine start-up, shut down tank and notify
field maintenance immediately.

Change 1 0065-4
 TM 9-2350-264-10-1 0065

START ENGINE (START ENGINE - NORMAL) - Continued

NOTE
STARTED light (12) should come on within 25 seconds to 60 seconds after
PUSH TO START pushbutton (3) is pressed, and should stay lit for about 10
seconds. If not, do Troubleshooting (Vol 2, WP 0350).

6. If ABORT light (8) lights, do steps to start engine after aborted start (WP 0066).

WARNING
If TNB circuit breaker CB3 is off, NBC main system cannot be turned on and
protection from fumes, smoke, and contamination will be lost. Be sure CB3 is
turned on after starting.

7. If TNB CB3 was turned off, wait 2 minutes and then have loader set TNB circuit breaker
CB3 to ON and reset LAMP RESET pushbutton (Vol 2, WP 0225).

CAUTION

Do not apply parking or service brakes longer than one minute when vehicle is
operating at tactical idle (ENGINE TACTICAL IDLE switch set to ON or shift
control set to PVT) with shift control in any position except N. Transmission oil
temperature increases rapidly under those conditions and could cause damage
to the transmission.

8. Make AFTER-START CHECKS (WP 0067).

END OF TASK

END OF WORK PACKAGE

0065-5/6 blank Change 1
START ENGINE (START ENGINE - AFTER ABORTED START) - Continued

TM 9-2350-264-10-1 0066

OPERATOR MAINTENANCE
START ENGINE (START ENGINE - AFTER ABORTED START)

INITIAL SETUP:
References References (continued)
WP 0067 Vol 2, WP 0284
WP 0124 Vol 2, WP 0302
Vol 2, WP 0225 Vol 2, WP 0350
Vol 2, WP 0263

NOTE
• ABORT light (1) will light and engine will coast to a stop if engine start cycle
is not completed. When engine has stopped turning, set VEHICLE MASTER
POWER switch (2) to OFF for about 10 seconds to turn off ABORT light (1).
Then set VEHICLE MASTER POWER switch (2) to ON.

• If weather is below 0°F (-18°C), OPERATE TANK IN EXTREME COLD

(START ENGINE) (Vol 2, WP 0284).

• When starting tank with 23.5 volts or less, ABORT light (1) will light. Set
VEHICLE MASTER POWER switch (2) to OFF to turn off ABORT light (1).
Set VEHICLE MASTER POWER switch (2) to ON and watch ELECTRICAL
SYSTEM voltmeter gage (3). If needle (4) on ELECTRICAL SYSTEM volt-
meter gage (3) moves to red, tank must be slave started (Vol 2, WP 0302).

• If voltmeter reads between 23.5 volts and 18 volts, make sure vehicle mas-
ter power switch is set to off, Emergency Auxiliary Power Unit (EAPU)
started and vehicle batteries charged (Vol 2, WP 0263), and auxiliary pump
is set to off (WP 0124).

• If EAPU shuts down when output power is set to on, tank must be slave
started (Vol 2, WP 0302).

0066-1 Change 1
 TM 9-2350-264-10-1 0066

START ENGINE (START ENGINE - AFTER ABORTED START) - Continued

1. Press and hold PUSH-TO-START pushbutton (5) no longer than 1 second and then let go.

2. If engine does not start, wait 1 minute.

3. Set and hold STARTER ONLY switch (6) to ENGAGED for 20 seconds to 30 seconds and
then let go.

4. Wait until engine stops turning and RPM gage (7) shows 0 rpm.

5. Press and hold PUSH-TO-START pushbutton (5) no less than 3 seconds and then let go.

6. If engine does not start, do Troubleshooting (Vol 2, WP 0350).

WARNING
If Turret Networks Box (TNB) circuit breaker CB3 is off, NBC main system can-
not be turned on and protection from fumes, smoke, and contamination will be
lost. Be sure CB3 is turned on after starting.

7. If TNB CB3 was turned off, wait two minutes after STARTED light (8) lights and then have
loader set CB3 to ON and reset LAMP RESET pushbutton on TNB (Vol 2, WP 0225).

8. Make AFTER-START CHECKS (WP 0067).

END OF TASK

END OF WORK PACKAGE

Change 1 0066-2
MAKE AFTER-START CHECKS (CHECK ENGINE INDICATORS) - Continued

TM 9-2350-264-10-1 0067

OPERATOR MAINTENANCE
MAKE AFTER-START CHECKS (CHECK ENGINE INDICATORS)

INITIAL SETUP:
References
Vol 2, WP 0350

1. Make sure TACTICAL IDLE switch (1) is OFF.

CAUTION

If tank has Digital Electronic Control Unit (DECU), idle speed may start low and
increase to normal idle upon warm-up. This reduces chance of recuperator
damage. Unless immediate operation is required, allow normal warm-up. Put-
ting transmission in gear or rotating throttle handgrips will give normal response
but defeats the purpose of the normal warm-up period.

2. Look at RPM gage (2) when engine has been running for 1 minute or longer. Needle (3) on
RPM gage (2) should be steady and show 850 rpm to 950 rpm. If engine has warmed up
and moving throttle handgrips slightly does not cause idle rpm to show 850-950, notify field
maintenance.

3. Set TACTICAL IDLE switch (1) to ON.

4. Look at RPM gage (2). Needle (3) on RPM gage (2) should move to show 1200 rpm to 1400
rpm. If it does not, notify field maintenance.

NOTE
If tank will be operating with NBC main system on, leave TACTICAL IDLE
switch (1) on, notify tank commander, and go to step 6.

5. Set TACTICAL IDLE switch (1) to OFF.

0067-1
 TM 9-2350-264-10-1 0067

MAKE AFTER-START CHECKS (CHECK ENGINE INDICATORS) - Continued

6. Look at RPM gage (2). Needle (3) on RPM gage (2) should show 850 rpm to 950 rpm
again. If moving throttle handgrips slightly does not cause idle rpm to show 850-950, notify
field maintenance.

7. Look at ELECTRICAL SYSTEM voltmeter gage (4). Needle (5) on ELECTRICAL SYSTEM
voltmeter gage (4) should be steady and show 26 volts to 29 volts. If gage reads less than
26 volts, do Troubleshooting (Vol 2, WP 0350). If gage reads more than 29 volts, notify field
maintenance.

END OF TASK

END OF WORK PACKAGE

0067-2
MAKE AFTER-START CHECKS (CHECK WARNING AND CAUTION
LIGHTS) - Continued
TM 9-2350-264-10-1 0068

OPERATOR MAINTENANCE
MAKE AFTER-START CHECKS (CHECK WARNING AND CAUTION LIGHTS)

INITIAL SETUP:
References References (continued)
WP 0051 WP 0079
WP 0078 Vol 2, WP 0350

CHECK WARNING LIGHTS

NOTE
MASTER WARNING light (1) and PARKING/SERVICE BRAKES light (2)
should be lit.

1. Check that MASTER WARNING light (1) is lit. If MASTER WARNING light (1) does not
light, do Troubleshooting (Vol 2, WP 0350).

2. Check that PARKING/SERVICE BRAKES light (2) is lit. If PARKING/ SERVICE BRAKES
light (2) does not light, do Troubleshooting (Vol 2, WP 0350).

0068-1
 TM 9-2350-264-10-1 0068

MAKE AFTER-START CHECKS (CHECK WARNING AND CAUTION

LIGHTS) - Continued

CHECK WARNING LIGHTS - Continued

3. Check that ENGINE warning lights (3), TRANSMISSION warning lights (4), and FIRE light
(5) are not lit. If ENGINE, TRANSMISSION, or FIRE warning lights (3), (4), or (5) are lit, do
immediate action for light(s) (WP 0078).

END OF TASK

CHECK CAUTION LIGHTS

NOTE
• MASTER CAUTION light (6) may stay on briefly after start until oil warms up.

• MASTER CAUTION light (6) may light briefly when shift selector is moved
from R, D, or L, to N.

0068-2
 TM 9-2350-264-10-1 0068

MAKE AFTER-START CHECKS (CHECK WARNING AND CAUTION

LIGHTS) - Continued

CHECK CAUTION LIGHTS - Continued

Check that MASTER CAUTION light (6) is not lit. If MASTER CAUTION light (6) is lit:

a. Check driver's instrument panel (7) to see which yellow light is lit.

b. Do steps for that caution light(s) (WP 0079).

c. On Redesigned Hull Networks Box (RHNB) equipped tanks, if ALERT light (8) on Sta-
tus Display Controller (SDC) (9) is lit go to (WP 0051).

END OF TASK

END OF WORK PACKAGE

0068-3/4 blank
MAKE AFTER-START CHECKS (CHECK PULSE JET SYSTEM (PJS) IF
EQUIPPED) - Continued
TM 9-2350-264-10-1 0069

OPERATOR MAINTENANCE
MAKE AFTER-START CHECKS (CHECK PULSE JET SYSTEM (PJS) IF
EQUIPPED)

INITIAL SETUP:
Personnel Required References
Two Vol 2, WP 0350

NOTE
• Make sure main Nuclear, Biological, and Chemical (NBC) system is OFF.
Pulses cannot be heard if NBC system is on.

• If the air pulse check needs to be repeated, return to idle, set Hull Networks
Box (HNB) Circuit Breaker (CB) 27 or if Redesigned Hull Networks Box
(RHNB) equipped, RHNB 27 to OFF and back to ON. This ensures the PJS
pulse control unit is reset and the two minute initialization and solenoid fir-
ing sequence starts at the beginning.

• PJS should start when engine speed stays above 1550 rpm for 2 minutes
(+/- 15 seconds). After two minute initialization period, you should hear the
sound of a short pulse of air, repeating at 10 second (+/-1 second) intervals,
and continuing for one cycle (9 pulses).

• Pulses are best heard when standing by sponson air intake grille on left side
of vehicle.

1. Have loader listen for air pulses at air cleaner inlet. When engine speed is increased, check
for the following:

a. Pulses begin after rpm stays above 1550 for a period of 1 minute 45 seconds to 2 min-
utes 15 seconds.

b. When pulses begin, a pulse is heard every 9 - 11 seconds.

c. At least 9 consecutive pulses are heard.

d. Check for scavenge fan blowing air at exhaust duct in left grille door.

0069-1 Change 3
 TM 9-2350-264-10-1 0069

MAKE AFTER-START CHECKS (CHECK PULSE JET SYSTEM (PJS) IF

EQUIPPED) - Continued

2. Obtain engine speed of 1550 rpm and hold.

3. Monitor Driver's Instrument Panel (DIP) (1) for AIR CLEANER CLOGGED FILTER caution
light (2). If caution light (2) appears, do Troubleshooting (Vol 2, WP 0350).

4. If air pulses, two minute initialization period, or 10 second interval between pulses is not
correct, do Troubleshooting (Vol 2, WP 0350).

5. If scavenge fan is not blowing air at exhaust duct in left grille door, notify field maintenance.

END OF TASK

END OF WORK PACKAGE

Change 3 0069-2
MAKE AFTER-START CHECKS (CHECK HYDRAULICS) - Continued

TM 9-2350-264-10-1 0070

OPERATOR MAINTENANCE
MAKE AFTER-START CHECKS (CHECK HYDRAULICS)

INITIAL SETUP:
References References (continued)
WP 0086 WP 0094

CAUTION

• If loud, high-pitched, squealing noise is heard, or hydraulic pressure drops

suddenly to 500 psi, or less, large hydraulic leak could be present. Inform
tank commander that turret power should be shut off immediately and then
shut down engine (WP 0086) as soon as possible to prevent damage to
engine-driven hydraulic pump.

• Repeated use of parking brake system without turret power on could cause
lack of hydraulic pressure and failure of parking brake system.

Check parking brake system hydraulic pressure gage (1).

a. Make sure turret power is on (WP 0094).

b. Parking brake system hydraulic pressure gage (1) should be steady and show 1200 psi
to 1800 psi pressure (green band).

c. If parking brake system hydraulic pressure gage (1) shows more than 1800 psi, con-
tinue mission, but notify field maintenance as soon as possible.

d. If parking brake system hydraulic pressure gage (1) shows less than 1200 psi, shut
down engine (WP 0086) and notify field maintenance.

END OF TASK

END OF WORK PACKAGE

0070-1/2 blank
MAKE AFTER-START CHECKS (CHECK BRAKES) - Continued

TM 9-2350-264-10-1 0071

OPERATOR MAINTENANCE
MAKE AFTER-START CHECKS (CHECK BRAKES)

INITIAL SETUP:
References
Vol 2, WP 0350

WARNING
Inform all personnel inside and outside tank before doing brake check. People
standing around tank could be injured if tank moves.

CAUTION

Do not apply parking or service brakes longer than 1 minute when vehicle is
operating at tactical idle (ENGINE TACTICAL IDLE switch set to ON or shift
control set to PVT) with shift control in any position except N. Transmission oil
temperature increases rapidly under those conditions and could cause damage
to the transmission.

NOTE
Steps 1 thru 3 must be done within 2 minutes after pressing service brake pedal
(1) for check to work.

1. Press and hold service brake pedal (1) as far as it will go.

a. Check that service brake pedal (1) feels solid. If not, notify field maintenance.

b. Check that service brake pedal (1) does not touch hull (2). If it does, notify field mainte-
nance.

2. Pull PARKING BRAKE RELEASE handle (3) and then push it back.

0071-1
 TM 9-2350-264-10-1 0071

MAKE AFTER-START CHECKS (CHECK BRAKES) - Continued

NOTE
PARKING/SERVICE BRAKES light (4) will light again when service brake pedal
(1) has been pressed for more than 2 minutes with engine running.

3. Check that PARKING/SERVICE BRAKES light (4) is not lit. If light is lit:

a. Press parking brake pedal (5) as far as it will go and then let it go.

b. Let go of service brake pedal (1).

c. Repeat steps 1 thru 3 if PARKING SERVICE BRAKES light (4) is still lit, press parking
brake pedal (5), let go of service brake pedal (1), set SHUTOFF switch (6) to SHUT-
OFF and then notify field maintenance.

0071-2
 TM 9-2350-264-10-1 0071

MAKE AFTER-START CHECKS (CHECK BRAKES) - Continued

4. Check that PARKING/SERVICE BRAKES light (4) lights when service brake pedal (1) has
been held for more than 2 minutes. If PARKING/SERVICE BRAKES light (4) does not light,
do Troubleshooting (Vol 2, WP 0350).

5. Set shift control (7) to D, while holding service brake.

6. Look at RPM gage (8).

7. Twist throttle handgrips (9) slowly rearward until RPM gage (8) shows 1450 rpm to 1550
rpm and then hold for not more than 10 seconds.

8. Check that tank does not creep forward. If it does:

a. Twist throttle handgrips (9) forward as far as they will go.

b. Press parking brake pedal (5) as far as it will go.

c. Set shift control (7) to N.

d. Press and hold service brake pedal (1).

e. Let go of brake pedals (1, 5).

f. Set SHUTOFF switch (6) to SHUTOFF.

g. Notify field maintenance.

9. Twist throttle handgrips (9) forward as far as they will go.

10. Set shift control (7) to N.

11. Press parking brake pedal (5) as far as it will go and then let it go.

12. Inform personnel inside and outside tank that brake check is finished.

END OF TASK
END OF WORK PACKAGE
0071-3/4 blank
 MAKE AFTER-START CHECKS (CHECK TRANSMISSION
DOWNSHIFT) - Continued
TM 9-2350-264-10-1 0072

OPERATOR MAINTENANCE
MAKE AFTER-START CHECKS (CHECK TRANSMISSION DOWNSHIFT)

INITIAL SETUP:
References
Vol 2, WP 0350

CAUTION
Do not apply parking or service brakes longer than 1 minute when vehicle is
operating at tactical idle (ENGINE TACTICAL IDLE switch set to ON or shift
control set to PVT) with shift control in any position except N. Transmission oil
temperature increases rapidly under those conditions and could cause damage
to the transmission.

1. Press and hold service brake pedal (1).

2. Set shift control (2) to D.

3. While listening for clunking sound from transmission, turn steer-throttle control (3) all the
way to the right.

4. While listening for clunking sound from transmission, turn steer-throttle control (3) all the
way to the left.

5. Turn steer-throttle control (3) back to center position.

6. If a clunking sound was heard in steps 3 and 4, steer-throttle control (3) is correctly
adjusted. Go to step 17. If clunking sound was not heard, go to step 7.

0072-1
 TM 9-2350-264-10-1 0072

MAKE AFTER-START CHECKS (CHECK TRANSMISSION

DOWNSHIFT) - Continued

7. Pull PARKING BRAKE RELEASE handle (4) and then push it back.

8. Put both hands on throttle handgrips (5).

9. Release service brake pedal (1).

10. Twist throttle handgrips (5) back to move tank forward at a speed of 1 mph or 2 mph.

11. Turn steer-throttle control (3) gradually to the right until it is all the way to the right. As down-
shift occurs, tank will make a tighter turn.

12. Turn steer-throttle control (3) gradually to the left until it is all the way to the left. As down-
shift occurs, tank will make a tighter turn.

0072-2
 TM 9-2350-264-10-1 0072

MAKE AFTER-START CHECKS (CHECK TRANSMISSION

DOWNSHIFT) - Continued

13. Turn steer-throttle control (3) back to center position and twist throttle handgrips (5) forward
as far as they will go.

NOTE
If transmission does not downshift automatically and the vehicle must be oper-
ated, it can be downshifted manually by moving shift control (2) from D to L.

14. If no change in tightness of turn was noticed in steps 11 and 12, notify field maintenance
after doing steps 15 thru 18.

0072-3
 TM 9-2350-264-10-1 0072

MAKE AFTER-START CHECKS (CHECK TRANSMISSION

DOWNSHIFT) - Continued

15. Press and hold service brake pedal (1) to stop tank.

16. Press parking brake pedal (6) as far as it will go and then let it go. PARKING/ SERVICE
BRAKES light (7) should light. If not, do Troubleshooting (Vol 2, WP 0350).

17. Set shift control (2) to N.

18. Release service brake pedal (1).

END OF TASK

END OF WORK PACKAGE

0072-4
 OPERATE PERISCOPE WIPER AND WASHER - Continued

TM 9-2350-264-10-1 0073

OPERATOR MAINTENANCE
OPERATE PERISCOPE WIPER AND WASHER

INITIAL SETUP:
Not Applicable

NOTE
Only center periscope (1) is equipped with wiper and washer.

1. Push rubber foot button (2) to squirt fluid on periscope (1).

2. Grasp lever (3).

3. Move lever (3) left and right until view through periscope (1) is clear.

4. Repeat steps 1 thru 3, as needed, until periscope (1) is clear.

END OF TASK

END OF WORK PACKAGE

0073-1/2 blank
 OPERATE BILGE PUMP - Continued

TM 9-2350-264-10-1 0074

OPERATOR MAINTENANCE
OPERATE BILGE PUMP

INITIAL SETUP:
References References (continued)
WP 0051 Vol 2, WP 0350

WARNING
Check surrounding area for personnel before turning on bilge pump. Debris
from inside hull may be thrown out of tank and injure personnel.

NOTE
• VEHICLE MASTER POWER switch must be set to ON (WP 0051) for bilge
pump to operate.

• If bilge pump is being operated using auxiliary hydraulic pressure, turret

cannot be operated in power mode.

1. Set BILGE PUMP switch (1) to ON. BILGE PUMP light (2) should light. If BILGE PUMP light
(2) does not light, do Troubleshooting (Vol 2, WP 0350).

0074-1
 TM 9-2350-264-10-1 0074

OPERATE BILGE PUMP - Continued

2. When water stops coming out of outlet (3), set BILGE PUMP switch (1) to OFF.

END OF TASK

END OF WORK PACKAGE

0074-2
 OPERATE SMOKE GENERATOR - Continued

TM 9-2350-264-10-1 0075

OPERATOR MAINTENANCE
OPERATE SMOKE GENERATOR

INITIAL SETUP:
References
Vol 2, WP 0350

WARNING

• Do not remain in smoke cloud more than 5 minutes without use of protective
mask and skin protection. More than 5 minutes unprotected exposure to
smoke cloud can cause temporary illness and eye and skin irritation.

• Do not turn on SMOKE GENERATOR switch if tank is using MOGAS or JP4

for fuel. The MOGAS or JP4 will cause explosions instead of smoke. If type
of fuel currently in tank is in doubt, check with tank commander.

NOTE
• If JP8 is used for fuel, the smoke generator will not produce smoke.

• The smoke generator fuel pump will only operate when engine is running.
This prevents possibility of fire and prevents fuel nozzle from becoming
clogged.

• Smoke generator will not work during engine startup or shutdown

sequences.

• If smoke generator is to be used without tank moving, TACTICAL IDLE

switch (1) must be set to ON.

0075-1
 TM 9-2350-264-10-1 0075

OPERATE SMOKE GENERATOR - Continued

1. Drive in direction and at speed directed by tank commander.

2. On command from tank commander, pull out and set SMOKE GENERATOR switch (2) to
ON. SMOKE GENERATOR light (3) should light. If SMOKE GENERATOR light (3) does not
light, do Troubleshooting (Vol 2, WP 0350).

3. On command from tank commander, pull out and set SMOKE GENERATOR switch (2) to
OFF.

END OF TASK

END OF WORK PACKAGE

0075-2
OPERATE PERSONNEL HEATER - STEWART WARNER - Continued

TM 9-2350-264-10-1 0076

OPERATOR MAINTENANCE
OPERATE PERSONNEL HEATER - STEWART WARNER

INITIAL SETUP:
Materials/Parts References (continued)
Rag, wiping (Vol 3, WP 0501, Item 47) Vol 2, WP 0144
Vol 2, WP 0194
Personnel Required
Two Vol 2, WP 0350
References
Vol 2, WP 0142

WARNING

• If heater does not start after two attempts, turn PERSONNEL HEATER
switch to OFF to avoid flooding and do Troubleshooting. Do not attempt to
start a heater that may be flooded. Attempting to start a flooded heater may
result in fire that could cause injury or death to personnel.

• Be alert during heater operation for exhaust odors or signs of exposure to

carbon monoxide. Carbon monoxide can kill you. If present, shut off heater
and ventilate tank.

• Explosive/flammable materials are a fire hazard. Do not store aerosol cans,

cleaning solvent, fuel, etc., anywhere inside tank. Stow ammunition in autho-
rized stowage areas only.

• If fuel leaks are found, do not use heater. Notify field maintenance.

CAUTION

Personnel heater can overheat and go into a shutdown cycle when temperature
inside vehicle reaches 80°F (27°C) or more (Stewart Warner type heater only).
When temperature drops, heater will recycle again. If allowed to cycle too many
times, damage to heater can result. If heater is operating and vehicle is occu-
pied, ventilate using hatches or turn off heater. If heater is operating and
vehicle is unoccupied, open hatches and vent vehicle.

0076-1
 TM 9-2350-264-10-1 0076

OPERATE PERSONNEL HEATER - STEWART WARNER - Continued

NOTE
• VEHICLE MASTER POWER switch (1) must be set to ON for personnel
heater to work.

• Use HIGH setting only to initially warm vehicle or in extreme cold. Use LOW
setting to maintain crew compartment temperature after initial warmup.

• In hot weather, use personnel heater fan to circulate air. To operate fan only,
set PERSONNEL HEATER switch (2) to RUN FAN.

• Fuel water separator removes water from fuel when personnel heater is run-
ning. If personnel heater is run for more than 4 hours, then do steps 1, 2, and
3 every 4 hours. These steps can be performed more often if fuel has more
water than normal. The personnel heater can run during water removal.

1. As needed, have crewmember traverse turret (Vol 2, WP 0142) or (Vol 2, WP 0144) to

access personnel heater.

0076-2
 TM 9-2350-264-10-1 0076

OPERATE PERSONNEL HEATER - STEWART WARNER - Continued

2. Verify Stewart Warner heater is installed in the tank. Stewart Warner units do not have a
Liquid Crystal Display (LCD) Troubleshooting display window mounted on the cover. Global
units have the LCD troubleshooting display (see below).

WARNING
Do not extend any part of body from turret into personnel heater area unless
turret lock is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is tra-
versed while you are between turret and personnel heater.

3. Have crewmember place a clean rag below hose on drain valve (3 or 4) on fuel/water sepa-
rator (5) to catch trapped water.

0076-3
 TM 9-2350-264-10-1 0076

OPERATE PERSONNEL HEATER - STEWART WARNER - Continued

4. If equipped with push drain valve (3), push drain valve up to release trapped water. If
equipped with screw drain valve (4), screw valve counterclockwise to release trapped water.

5. Set HIGH/LOW switch (6) to LOW.

6. Set PERSONNEL HEATER switch (2) up to START and hold until PERSONNEL HEATER
light (7) lights and then set PERSONNEL HEATER switch (2) to RUN FAN.

a. If PERSONNEL HEATER light (7) does not light within 2 minutes, set PERSONNEL
HEATER switch (2) to OFF for 10 seconds and then set PERSONNEL HEATER switch
(2) to START.

b. If PERSONNEL HEATER light (7) does not light within 60 seconds, set PERSONNEL
HEATER switch (2) to OFF for 10 seconds and then set PERSONNEL HEATER switch
(2) to START.

c. Repeat step 6b.

d. If PERSONNEL HEATER light (7) still does not light, do Troubleshooting (Vol 2,
WP 0350).

7. Set HIGH/LOW switch (6) to HIGH if more heat is desired.

0076-4
 TM 9-2350-264-10-1 0076

OPERATE PERSONNEL HEATER - STEWART WARNER - Continued

8. Set heater control lever (8) as needed:

a. Set heater control lever (8) to TURRET to direct most heater airflow to turret.

b. Set heater control lever (8) to BOTH to direct heater airflow to both turret and driver's
station.
CAUTION

If most heater airflow is directed to driver's station, do not leave HIGH/LOW

switch (6) set to HIGH longer than necessary. Extreme heat may cause crew
compartment fire extinguisher to discharge.

c. Set heater control lever (8) to DRIVER to direct most heater airflow to driver's station.

9. Adjust flow control handle (9) to direct heater airflow on upper body, feet, or both, as
needed. Loosen, adjust, and then tighten flow control handle (9).

10. Adjust vent (10) to direct heater airflow on upper body, as needed.

NOTE
When PERSONNEL HEATER switch (2) is set to OFF, fan will run and PER-
SONNEL HEATER light (7) will stay lit until personnel heater cools.

11. When personnel heater is no longer needed, set PERSONNEL HEATER switch (2) to OFF.

END OF TASK

END OF WORK PACKAGE

0076-5/6 blank
 OPERATE PERSONNEL HEATER - GLOBAL - Continued

TM 9-2350-264-10-1 0077

OPERATOR MAINTENANCE
OPERATE PERSONNEL HEATER - GLOBAL

INITIAL SETUP:
Materials/Parts References (continued)
Rag, wiping (Vol 3, WP 0501, Item 46) Vol 2, WP 0144
Vol 2, WP 0350
Personnel Required
Vol 3, WP 0472
Two
TM 9-2540-207-14&P
References
Vol 2, WP 0142

WARNING
• If heater does not start after three attempts, heater will be flooded and must
be purged. Do not attempt to start a heater that may be flooded. Attempting
to start a flooded heater may result in fire that could cause injury or death to
personnel (Vol 3, WP 0472).

• Be alert during heater operation for exhaust odors or signs of exposure to

carbon monoxide. Carbon monoxide can kill you. If present, shut off heater
and ventilate tank.

• Explosive/flammable materials are a fire hazard. Do not store aerosol cans,

cleaning solvent, fuel, etc., on or near personnel heater and ducts or any-
where inside tank. Stow ammunition in authorized stowage areas only.

• If fuel leaks are found, do not use heater. Notify field maintenance.

CAUTION

If heater is operating and vehicle is occupied, ventilate using hatches or turn off
heater. If heater is operating and vehicle is unoccupied, open hatches and vent
vehicle.

0077-1
 TM 9-2350-264-10-1 0077

OPERATE PERSONNEL HEATER - GLOBAL - Continued

NOTE
• VEHICLE MASTER POWER indicator light (1) must be ON for personnel
heater to work.

• Use HIGH setting only to initially warm vehicle or in extreme cold. Use LOW
setting to maintain crew compartment temperature after initial warm-up.

• Currently, if tank is equipped with a Hunter model heater, fan may not run
when PERSONNEL HEATER switch (2) is set to RUN FAN to operate fan
only. If fan does not run when PERSONNEL HEATER switch (2) is set to
RUN FAN, or runs briefly then shuts down, notify field maintenance.

• In hot weather, use personnel heater fan to circulate air. To operate fan only,
set PERSONNEL HEATER switch (2) to RUN FAN.

NOTE
Fuel water separator removes water from fuel when personnel heater is run-
ning. If personnel heater is run for more than 4 hours, then do steps 1, 2, and 3
every 4 hours. These steps can be performed more often if fuel has more water
than normal. The personnel heater can run during water removal.

1. Verify Global heater is selected.

WARNING
Do not extend any part of body from turret into personnel heater area unless
turret lock is set to LOCKED. You can be killed if turret is traversed while you are
between turret and personnel heater.

2. As needed, have crewmember traverse turret (Vol 2, WP 0142) or (Vol 2, WP 0144) to

access personnel heater.

0077-2
 TM 9-2350-264-10-1 0077

OPERATE PERSONNEL HEATER - GLOBAL - Continued

3. Have crewmember place a clean rag below hose on drain valve (3) on fuel/water separator
(4) to catch trapped water.

4. Have crewmember push drain valve (3) up to release trapped water.

NOTE
Basic operation of personnel heater in tank is covered here. For detailed infor-
mation, refer to TM 9-2540-207-14&P.

5. Set VEHICLE MASTER POWER switch (5) to ON.

WARNING
If heater does not start after three attempts, heater will be flooded and must be
purged. Do not attempt to start a flooded heater. Fire may result which may
cause serious injury or death.

6. Set PERSONNEL HEATER switch (2) up to START and hold until PERSONNEL HEATER
light (6) comes on, then set PERSONNEL HEATER switch (2) to RUN FAN.

7. If heater starts, go to step 13.

8. If heater does not start within 5 minutes, make a second attempt to start:

a. Set PERSONNEL HEATER switch (2) to center position and wait 30 seconds.

b. Set PERSONNEL HEATER switch (2) up to START.

9. If heater starts, go to step 13.

10. If heater still does not start within 5 minutes, make a third attempt to start:

a. Set PERSONNEL HEATER switch (2) to center position and wait 30 seconds.

b. Set PERSONNEL HEATER switch (2) up to START.

0077-3
 TM 9-2350-264-10-1 0077

OPERATE PERSONNEL HEATER - GLOBAL - Continued

11. If heater starts, go to step 13.

12. If heater does not start within 5 minutes, turn OFF PERSONNEL HEATER (2). Record
diagnostic code from heater cover (7) and do Troubleshooting (Vol 2, WP 0350).

13. Set HIGH/LOW switch (8) to HIGH if more heat is desired.

14. Set heater control lever (9) as needed:

a. Set heater control lever (9) to TURRET to direct most heater airflow to turret.

b. Set heater control (9) to BOTH to direct heater airflow to both turret and driver's station.

0077-4
 TM 9-2350-264-10-1 0077

OPERATE PERSONNEL HEATER - GLOBAL - Continued

CAUTION
If most heater airflow is directed to driver's station, do not leave HIGH/LOW
switch (8) set to HIGH longer than necessary. Extreme heat may cause crew
compartment fire extinguisher to discharge.

c. Set heater control lever (9) to DRIVER to direct most heater airflow to driver's station.

15. Adjust flow control handle (10) to direct heater airflow on upper body, feet, or both as
needed. Loosen adjustment, and then tighten flow control handle (10).

16. Adjust vent (11) to direct heater airflow on upper body as needed.

NOTE
When PERSONNEL HEATER switch (2) is set to OFF, fan will run and PER-
SONNEL HEATER light (6) will stay lit until heater cools.

17. When heater is no longer needed, set PERSONNEL HEATER switch (2) to OFF.

END OF TASK

END OF WORK PACKAGE

0077-5/6 blank
DRIVE TANK (CHECK MASTER WARNING LIGHT) - Continued

TM 9-2350-264-10-1 0078

OPERATOR MAINTENANCE
DRIVE TANK (CHECK MASTER WARNING LIGHT)

INITIAL SETUP:
References References (continued)
WP 0060 WP 0086
WP 0080 Vol 2, WP 0350

NOTE
Frequently check MASTER WARNING light (1) on Driver's Alert Panel (DAP)
(2) during engine operation.

1. If MASTER WARNING light (1) lights, check Driver's Instrument Panel (DIP) (3) and Driv-
er's Master Panel (DMP) (4) to see which red light is lit.

NOTE
• If MASTER WARNING light (1) is lit because of engine overspeed, MAS-
TER WARNING light (1) will go off after condition is corrected and RESET
pushbutton (5) is pressed. If MASTER WARNING light (1) is lit for any other
reason, it will go off automatically when problem is corrected.

• Flashing ENGINE FIRE light (6) on DIP (3) indicates engine fire.

2. If ENGINE FIRE light (6) is flashing:

a. Notify tank commander.

b. Operate engine compartment fire extinguisher (WP 0060).

0078-1
 TM 9-2350-264-10-1 0078

DRIVE TANK (CHECK MASTER WARNING LIGHT) - Continued

3. If PARKING/SERVICE BRAKES light (7) is lit, see (WP 0080).

NOTE
It is normal for ENGINE OVERSPEED light (8) to come on during operation on
certain terrain, such as going downhill at high speed.

4. If ENGINE OVERSPEED light (8) is lit:

a. Slow down tank and press RESET pushbutton (5). If ENGINE OVERSPEED light (8)
goes out, continue mission.

b. If ENGINE OVERSPEED light (8) stays lit or comes on frequently:

(1) Twist throttle handgrips (9) forward to idle position.

(2) Stop tank.

(3) Make sure TACTICAL IDLE switch (10) is in OFF position.

0078-2
 TM 9-2350-264-10-1 0078

DRIVE TANK (CHECK MASTER WARNING LIGHT) - Continued

(4) Look at RPM gage (11) to see that engine slows to 1200 rpm or less. If it does,
continue mission. If not, go to step 4c.

c. If RPM gage (11) continues to show an engine speed greater than 1200 rpm:

(1) Set shift control (12) to N.

(2) Set parking brake by pressing parking brake pedal (13).

(3) Look at RPM gage (11) to see that engine slows to between 850 rpm and 950 rpm.
If it does, press RESET pushbutton (5) and continue mission with caution. If not,
shut down engine (WP 0086) and notify field maintenance.

5. If GAS OVERTEMP light (14) is lit continue operation.

6. If ENGINE OIL TEMP HIGH light (15) is lit, engine should shut down automatically. If not:

a. Stop tank and shut down engine (WP 0086).

0078-3
 TM 9-2350-264-10-1 0078

DRIVE TANK (CHECK MASTER WARNING LIGHT) - Continued

b. Do Troubleshooting (Vol 2, WP 0350).

WARNING
If TRANSMISSION OIL TEMP HIGH (16) and TRANSMISSION OIL PRESS
LOW (17) warning lights come on at the same time or TRANSMISSION DAM-
AGED - INSPECT light (18) (if equipped) comes on, stop tank, shut down
engine immediately (WP 0086), and notify field maintenance. Continued opera-
tion could result in the loss of steering and braking, damage to transmission,
and personnel injury. Use parking brake if service brake will not stop tank.

7. If ENGINE OIL PRESS LOW (19), TRANSMISSION OIL TEMP HIGH (16), TRANSMIS-
SION OIL PRESS LOW (17), or, (if equipped), TRANSMISSION DAMAGED - INSPECT
(18), light(s) comes on, do Troubleshooting (Vol 2, WP 0350).

END OF TASK

END OF WORK PACKAGE

0078-4
DRIVE TANK (CHECK MASTER CAUTION LIGHT) - Continued

TM 9-2350-264-10-1 0079

OPERATOR MAINTENANCE
DRIVE TANK (CHECK MASTER CAUTION LIGHT)

INITIAL SETUP:
References References (continued)
WP 0051 Vol 2, WP 0285
WP 0060 Vol 2, WP 0338
WP 0064 Vol 2, WP 0350
WP 0086

NOTE
Frequently check MASTER CAUTION light (1) on Driver's Alert Panel (DAP) (2)
during engine operation.

1. When MASTER CAUTION light (1) is lit, check Driver's Instrument Panel (DIP) (3) to see
which yellow light is lit.

2. On Redesigned Hull Networks Box (RHNB) equipped tanks, if ALERT light (4) on Status
Display Controller (SDC) (5) is lit, go to (WP 0051), step 7c.

NOTE
MASTER CAUTION light (1) will go off when RESET pushbutton (6) is pressed.
Light(s) on DIP (3) will stay lit until fault(s) is corrected.

3. If 1ST SHOT DISCHARGED light (7) is lit:

a. Notify tank commander.

b. Operate engine compartment fire extinguisher - automatic mode (WP 0060).

0079-1
 TM 9-2350-264-10-1 0079

DRIVE TANK (CHECK MASTER CAUTION LIGHT) - Continued

4. If LOW FUEL LEVEL light (8) is lit, TRANSFER FUEL (WP 0064).

5. If one of the following lights is lit, do Troubleshooting (Vol 2, WP 0350):

a. LOW BAT CHARGE light (9).

b. CABLE DISCONNECTED light (10).

NOTE
CIRCUIT BREAKER OPEN light (11) will go off when RESET pushbutton (6) is
pressed, even if a circuit breaker is off. If another circuit breaker goes off, CIR-
CUIT BREAKER OPEN light (11) will come on again.

c. CIRCUIT BREAKER OPEN light (11).

6. If ENGINE OIL LOW light (12) is lit, at next stop do Troubleshooting (Vol 2, WP 0350).

0079-2
 TM 9-2350-264-10-1 0079

DRIVE TANK (CHECK MASTER CAUTION LIGHT) - Continued

WARNING
Do not run auxiliary hydraulic pump when the engine is running and the
HYDRAULIC SYSTEM MALFUNCTION light (13) is lit. Operation with a dam-
aged main hydraulic system may result in complete system failure and an
engine compartment fire.

NOTE
• Ten lights on bottom part of MAINTENANCE MONITOR (14) show faults
only when vehicle engine is running.

• In extreme cold weather (below 0°F, -18°C), HYDRAULIC SYSTEM MAL-

FUNCTION light (13) may come on after engine starts. (Vol 2, WP 0285).

7. When HYDRAULIC SYSTEM MALFUNCTION light (13) is lit, shut down engine (WP 0086)
and then do Troubleshooting (Vol 2, WP 0350).

8. When ENGINE OIL CLOGGED FILTER light (15) is lit, notify field maintenance.

0079-3
 TM 9-2350-264-10-1 0079

DRIVE TANK (CHECK MASTER CAUTION LIGHT) - Continued

WARNING
When TRANSMISSION DAMAGED - INSPECT light (16) (if equipped) comes
on alone or if TRANSMISSION OIL CLOGGED FILTER light (17) comes on with
either TRANSMISSION OIL TEMP HIGH light (18) or TRANSMISSION OIL
PRESS LOW light (19), stop tank, shut down engine immediately (WP 0086),
and notify field maintenance. Continued operation could result in loss of steer-
ing and braking, damage to transmission, and personnel injury. Use parking
brake if service brake will not stop tank.

9. When TRANSMISSION DAMAGED - INSPECT light (16) (if equipped) is lit, stop tank, shut
down engine (WP 0086), and notify field maintenance.

10. When TRANSMISSION OIL CLOGGED FILTER light (17) comes on with either TRANSMIS-
SION OIL TEMP HIGH light (18) or TRANSMISSION OIL PRESS LOW light (19), stop tank,
shut down engine (WP 0086), and notify field maintenance.

11. When TRANSMISSION OIL CLOGGED FILTER light (17) is lit, notify field maintenance.

NOTE
After PRIMARY FUEL CLOGGED FILTER light (20) lights refer to (Vol 2,
WP 0338).

12. When PRIMARY FUEL CLOGGED FILTER light (20) is lit, notify field maintenance.

0079-4
 TM 9-2350-264-10-1 0079

DRIVE TANK (CHECK MASTER CAUTION LIGHT) - Continued

CAUTION
Clogged air filter should be serviced as soon as possible. Dirty air filter reduces
engine power and continued operation with dirty air filter will cause damage to
engine.

13. When AIR CLEANER CLOGGED FILTER light (21) is lit, do Troubleshooting (Vol 2,
WP 0350).

14. When REAR FUEL PUMP-R INOPERATIVE light (22) is lit, do Troubleshooting (Vol 2,
WP 0350).

15. When REAR FUEL PUMP-L INOPERATIVE light (23) is lit, do Troubleshooting (Vol 2,
WP 0350).

CAUTION

If tank has Digital Electronic Control Unit (DECU), regularly flashing FUEL
CONTROL FAULTY light (24) means that DECU is operating on internal
back-up battery. You may lose throttle control in 1/2-hour or less.

16. When FUEL CONTROL FAULTY light (24) is lit or flashing at regular intervals, do Trouble-
shooting (Vol 2, WP 0350).

NOTE
If corrective action did not correct fault, DIP (3) light(s) will stay on.

17. When the proper corrective action has been done for DIP (3) caution light(s), press the DAP
RESET pushbutton (6). This will turn off MASTER CAUTION light (1).

END OF TASK

END OF WORK PACKAGE

0079-5/6 blank
 DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

TM 9-2350-264-10-1 0080

OPERATOR MAINTENANCE
DRIVE TANK (OPERATE DRIVING CONTROLS)

INITIAL SETUP:
References References (continued)
Vol 2, WP 0286 Vol 2, WP 0333
Vol 2, WP 0329 Vol 2, WP 0350
Vol 2, WP 0330 PAM 40-501

OPERATE SHIFT CONTROL

WARNING
• Do not move steer-throttle control (1) when shift control (2) is set to N. Tank
will pivot steer and could injure personnel.

• All crewmembers must wear double hearing protection when operating the
tank at speeds above 10 mph (16 kph) for more than 20 miles (32 km) in any
24 hour period. Double hearing protection includes approved earplugs, ear-
muffs, CVC helmet, or headset. PAM 40-501 , Provides additional guidance
on approved earplugs.

NOTE
• If your tank starts to slip and slide while moving/driving tank, notify com-
mander and refer to (Vol 2, WP 0286).

• When shift control (2) is set to D, tank will move forward in second speed
range and then change speed ranges automatically.

1. To move tank forward over normal ground, set shift control (2) on steer-throttle control (1)
to D.

0080-1
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE SHIFT CONTROL - Continued

NOTE
When shift control (2) is set to L, tank will move forward in first (lowest) speed
range and then change speed ranges automatically.

2. To move tank forward when pulling heavy loads or for most pulling power, set shift control
(2) to L.

WARNING
Do not set shift control (2) to N when tank is moving. Tank will pivot steer, if
steer-throttle control (1) is moved, causing tank to wreck and possible injury to
crewmembers.

CAUTION

Setting shift control (2) to N will not lock transmission. Parking brake pedal (3)
must be pushed to lock parking brakes and keep tank from moving.

NOTE
It takes 30 seconds for engine to reach idle speed when shift control (2) is
shifted from D to N.

3. To idle engine with no forward or rearward movement of tank, and when starting up or shut-
ting down engine, set shift control (2) to N.

0080-2
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE SHIFT CONTROL - Continued

WARNING
Do not attempt to pivot tank with shift control (2) set to N. Damage to drive train
can result and personnel could be injured.

CAUTION

Do not set shift control (2) to PVT when tank is moving forward or rearward.
Damage to drive train can result.

NOTE
Engine speed will automatically go to tactical idle (1200 rpm to 1400 rpm) when
shift control (2) is set to PVT.

4. To pivot tank (turn tank in its own length), set shift control (2) to PVT.

CAUTION

Tank must be brought to a full stop before moving shift control (2) from D or L to
R, or to D or L. Damage to transmission will occur if a full stop is not used
between shifts.

NOTE
When shift control (2) is set to R, tank will move rearward in low reverse speed
range and then change to higher reverse speed range automatically.

5. To move tank rearward, set shift control (2) to R.

END OF TASK

0080-3
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE STEER-THROTTLE CONTROL

WARNING
Do not move steer-throttle control (1) when shift control (2) is set to N. Tank will
pivot steer and could injure personnel.

CAUTION

• Do not let steer-throttle control (1) return to center by releasing it. Keep
hands on handgrips (4, 5) and guide steer-throttle control (1) to center, or
control of tank can be lost.

• Avoid speeds more than 20 mph (32 km/h) when making sharp turns. Tank
skidding on soft ground, sand, or gravel can cause tank to throw track.

NOTE
• If loss of steering occurs while tank is moving, do IMMEDIATE ACTION
FOR LOSS OF STEERING (Vol 2, WP 0329).

• For best control and shortest turn radius, set shift control (2) to L.

1. To turn tank to left while driving forward:

a. Push right handgrip (5) forward and pull left handgrip (4) back.

b. Return steer-throttle control (1) to center to stop turn.

0080-4
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE STEER-THROTTLE CONTROL - Continued

2. To turn tank to right while driving forward:

a. Push left handgrip (4) forward and pull right handgrip (5) back.

b. Return steer-throttle control (1) to center to stop turn.

CAUTION
Avoid sharp turns when driving rearward.

3. To turn tank to left while driving rearward:

a. Push left handgrip (4) forward and pull right handgrip (5) back.

b. Return steer-throttle control (1) to center to stop turn.

0080-5
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE STEER-THROTTLE CONTROL - Continued

4. To turn tank to right while driving rearward:

a. Push right handgrip (5) forward and pull left handgrip (4) back.

b. Return steer-throttle control (1) to center to stop turn.

CAUTION

Engine speed controls speed of pivot. Do not make sudden pivot turn; it may
cause tank to throw track.

NOTE
Shift control (2) must be set to PVT to pivot turn tank.

5. To pivot turn tank to left:

a. Push right handgrip (5) forward and pull left handgrip (4) back.

b. Return steer-throttle control (1) to center to stop turn.

0080-6
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE STEER-THROTTLE CONTROL - Continued

6. To pivot tank to right:

a. Push left handgrip (4) forward and pull right handgrip (5) back.

b. Return steer-throttle control (1) to center to stop turn.

END OF TASK

0080-7
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE BRAKE CONTROLS

WARNING
In all gears, there is no drag from engine to slow or stop tank. Brakes must be
used to slow or stop tank.

CAUTION

If PARKING/SERVICE BRAKES light (6) is lit, do not drive tank except in an

emergency. Driving tank with PARKING/SERVICE BRAKES light (6) lit will
result in transmission damage.

NOTE
• If loss of brakes occurs while tank is moving, do IMMEDIATE ACTION FOR
LOSS OF SERVICE BRAKES (Vol 2, WP 0330).

• PARKING/SERVICE BRAKES light (6) will light when service brake pedal (7)
has been pressed for more than 2 minutes with engine running.

• If PARKING/SERVICE BRAKES light (6) lights while driving, make sure ser-
vice brake pedal (7) and parking brake pedal (3) are released. If PARKING/
SERVICE BRAKES light (6) lights with pedals (7), (3) released, stop tank
and do UNLOCK STUCK PARKING BRAKES (Vol 2, WP 0333).

1. To slow or stop tank, press service brake pedal (7) with either left or right foot.

2. Release service brake pedal (7) to release service brakes.

0080-8
 TM 9-2350-264-10-1 0080

DRIVE TANK (OPERATE DRIVING CONTROLS) - Continued

OPERATE BRAKE CONTROLS - Continued

NOTE
• Parking brake must be used to keep tank from moving when parked. Trans-
mission N (neutral) setting does not lock transmission.

• Set parking brake when tank is stopped with shift control (2) set to N, and
engine either running or shut down.

3. To set parking brake, press parking brake pedal (3) with right foot. PARKING/SERVICE
BRAKES light (6) should light. If not, do Troubleshooting (Vol 2, WP 0350).

4. To release parking brake, pull release handle (8) and then push it back. PARKING/
SERVICE BRAKES light (6) should go off. If not, do Troubleshooting (Vol 2, WP 0350).

END OF TASK

END OF WORK PACKAGE

0080-9/10 blank
 DRIVE TANK (MOVE TANK) - Continued

TM 9-2350-264-10-1 0081

OPERATOR MAINTENANCE
DRIVE TANK (MOVE TANK)

INITIAL SETUP:
References References (continued)
WP 0078 Vol 2, WP 0286
WP 0079 Vol 2, WP 0290
WP 0080 Vol 2, WP 0328

WARNING

• When driving with a ground guide, do not drive faster than ground guide can
walk. Stop tank if ground guide cannot be seen. You could run over and kill
him.

• Avoid excessive speed when operating tank over terrain that is unusually
rough or when crossing ditches. Injury to personnel or damage to track and
suspension components could occur if excessive speed is used.

• Do not cross the Armored Vehicle Launched Bridge (AVLB) with an M1

series tank that has the mine clearing blade installed. Doing so will result in
damage to the bridge and could cause death or serious injury to personnel.

• Cross the Class 60 AVLB only in an emergency when excessive combat

losses would otherwise result.

• Center vehicle on bridge.

• Do not exceed 3 mph (5 km/h) crossing speed.
• Do not stop, accelerate, or shift gears while on the bridge.

• When crossing a Wolverine Bridge with an M1A1 tank (70 ton), do not
exceed 10 mph (16 kph). Doing so will result in collapse or damage to the
bridge and could cause death or injury to personnel.

• Driver's hatch must remain closed when the turret and/or gun are unlocked
and turret power is on. Users must only operate from the open hatch posi-
tion with the turret and gun locked.

0081-1
 TM 9-2350-264-10-1 0081

DRIVE TANK (MOVE TANK) - Continued

NOTE
• If your tank starts to slip and slide while moving/driving tank on ice, notify
commander and refer to OPERATE IN ICY CONDITIONS (INSTALL ICE
CLEATS) (Vol 2, WP 0290).

• If weather is cold (below 0°F, -18°C), refer to OPERATE TANK IN EXTREME

COLD (DRIVE TANK) (Vol 2, WP 0286).

• When driving forward in tight area, one ground guide in front of tank should
be used. When driving rearward in tight area, one ground guide in front of
tank and one ground guide in back of tank should be used.

• If engine stops while tank is moving, do IMMEDIATE ACTION FOR LOSS

OF ENGINE POWER (Vol 2, WP 0328).

1. Press and hold service brake pedal (1).

2. Pull parking brake release handle (2) and then push it back.

WARNING
Do not set shift control (3) to N when tank is moving. Tank will pivot steer if
steer-throttle control (4) is moved, causing tank to wreck and injury to crew-
members.

3. Move shift control (3) to needed range (WP 0080).

4. Put both hands on throttle handgrips (5).

5. Release service brake pedal (1).

6. Twist handgrips (5) back to move tank.

0081-2
 TM 9-2350-264-10-1 0081

DRIVE TANK (MOVE TANK) - Continued

7. Twist handgrips (5) forward or back to adjust speed of tank.

8. Use steer-throttle control (4) to change direction.

9. Use service brake pedal (1) to slow or stop tank.

10. Be alert in case MASTER WARNING light (6) (WP 0078) or MASTER CAUTION light (7)
(WP 0079) lights while driving.

END OF TASK

END OF WORK PACKAGE

0081-3/4 blank
 DRIVE TANK (DRIVE UP AND DOWN HILLS) - Continued

TM 9-2350-264-10-1 0082

OPERATOR MAINTENANCE
DRIVE TANK (DRIVE UP AND DOWN HILLS)

INITIAL SETUP:
References
Vol 2, WP 0328

CAUTION

Do not drive tank up or down hills of more than 60% (31°) grade. Do not drive
tank on side of slopes of more than 40% (22°) grade. Tank may slide.

NOTE
• A shift from D to L will not slow or stop tank. Brakes must be used.

• If engine stops while tank is moving, DO IMMEDIATE ACTION FOR LOSS

OF ENGINE POWER (Vol 2, WP 0328).

1. Drive tank straight up hill, if possible.

2. Set shift control (1) to L if forward speed cannot be kept.

3. Use service brake pedal (2) to stop tank on hill.

4. Drive straight down hill, if possible.

5. Use service brake pedal (2) to keep safe speed.

END OF TASK

END OF WORK PACKAGE

0082-1/2 blank
 DRIVE TANK (DRIVE OVER OBSTACLE) - Continued

TM 9-2350-264-10-1 0083

OPERATOR MAINTENANCE
DRIVE TANK (DRIVE OVER OBSTACLE)

INITIAL SETUP:
Not Applicable

WARNING
Avoid excessive speed when operating the tank over terrain that has many
obstacles, or that is unusually rough. Injury to personnel or damage to track and
suspension components could occur if excessive speed is used.

CAUTION

Do not try to drive over obstacles higher than 42 in. (1.1 m). Damage to tank
suspension can result.

1. Alert crew that obstacle (1) will be crossed.

2. Make sure main gun (2) is elevated all the way.

3. Slow down tank and set shift control to L.

4. Drive tank slowly to meet forward edge (3) of obstacle (1).

5. Increase speed and drive up obstacle (1).

6. Slow down tank as it gets to balance point (4).

7. Drive forward slowly to ease tank forward from balance point (4).

0083-1
 TM 9-2350-264-10-1 0083

DRIVE TANK (DRIVE OVER OBSTACLE) - Continued

8. Drive down off obstacle (1) slowly, using service brakes to control speed.

9. When tracks touch ground, increase speed.

10. When rear of tank is off obstacle (1), continue normal driving.

END OF TASK

END OF WORK PACKAGE

0083-2
 DRIVE TANK (DRIVE ACROSS DITCH) - Continued

TM 9-2350-264-10-1 0084

OPERATOR MAINTENANCE
DRIVE TANK (DRIVE ACROSS DITCH)

INITIAL SETUP:
Not Applicable

WARNING
Avoid excessive speed when crossing ditches or operating the tank over terrain
that is unusually rough. Injury to personnel or damage to track or suspension
components could occur if excessive speed is used.

CAUTION

Tank can cross a ditch that is up to 9 feet (2.8 m) wide if the edges of the ditch
are firm. If the edges are soft or sandy, the width of a ditch that can be crossed
will be less.

1. Alert crew that ditch (1) will be crossed.

2. Make sure main gun (2) is elevated to clear obstacles.

3. Slow down tank and set shift control to L.

4. Drive tank slowly to meet ditch (1) with both tracks at edge of opening (3).

5. Drive slowly into ditch (1).

6. When front of tracks touch far side (4) of ditch (1), increase speed.

0084-1
 TM 9-2350-264-10-1 0084

DRIVE TANK (DRIVE ACROSS DITCH) - Continued

7. Slow down tank as it gets to balance point (5).

8. Drive forward slowly to ease tank forward from balance point (5).

9. When front of tank touches ground, continue normal driving.

END OF TASK

END OF WORK PACKAGE

0084-2
 DRIVE TANK (DRIVE AT NIGHT) - Continued

TM 9-2350-264-10-1 0085

OPERATOR MAINTENANCE
DRIVE TANK (DRIVE AT NIGHT)

INITIAL SETUP:
Tools and Special Tools References
Handle, socket wrench, 1/2-in. drive WP 0054
(Vol 3, WP 0499, Item 37) WP 0085
Socket, socket wrench, 19 mm, 1/2-in. WP 0088
drive (Vol 3, WP 0499, Item 76) Vol 2, WP 0194
Vol 2, WP 0350
Personnel Required Vol 3, WP 0379

Two

OPERATE OUTSIDE LIGHTS

NOTE
• VEHICLE MASTER POWER switch (1) must be set to ON for outside lights
to work.

• Have someone check that outside lights work before driving at night. If any
needed lights do not work, do Troubleshooting (Vol 2, WP 0350).

• When LIGHTS switch (2) is set to STOP LIGHTS ONLY, stoplights on rear of
tank will light when service brake pedal (3) is pressed. Stoplights on rear of
tank will go off when service brake pedal (3) is released.

1. To operate with only stoplights on rear of tank, push in and set LIGHTS switch (2) to STOP
LIGHTS ONLY.

NOTE
When LIGHTS switch (2) is set to SERVICE LIGHTS, headlights and taillights
will light, and stoplights on rear of tank will light when service brake pedal (3) is
pressed. Stoplights on rear of tank will go off when service brake pedal (3) is
released.

2. To operate with normal headlights and taillights, push in and

set LIGHTS switch (2) to SERVICE LIGHTS.

0085-1
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE OUTSIDE LIGHTS - Continued

3. To set headlight beams:

a. For high beam headlights, set HI BEAM switch (4) to ON. HI BEAM light (5) should
light. If not, do Troubleshooting (Vol 2, WP 0350).

b. For low beam headlights, set HI BEAM switch (4) to OFF. HI BEAM light (5) should go
off. If not, do Troubleshooting (Vol 2, WP 0350).

NOTE
When LIGHTS switch (2) is set to BO, blackout markers on front and rear of
tank will light, and BO stoplights on rear of tank will light when service brake
pedal (3) is pressed. BO stoplights on rear of tank will go off when service
brake pedal (3) is released.

4. To operate with blackout markers, set LIGHTS switch (2) to BO.

5. When outside lights are no longer needed, set LIGHTS switch (2) to OFF.

END OF TASK

0085-2
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

USE INFRARED LENSES

NOTE
Night vision viewer will let driver see when there is very little light. On very dark
nights or when more light is needed to see clearly, infrared light source can be
used.
1. Remove two infrared headlight lenses (6) from oddment box (7) under commander's arm-
rest (8).

2. Using 19 mm socket and hinged socket wrench handle, loosen but do not remove screw (9).
3. Using 19 mm socket and hinged socket wrench handle, remove screw (10) and
washer (11).
4. Swing headlight guard (12) away from headlamp body (13).

0085-3
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

USE INFRARED LENSES - Continued

NOTE
Captive screws (14) do not have to be completely removed.

5. Using flat-tip screwdriver, unscrew four captive screws (14) until free of headlamp body (13).

6. Take off lens holder plate (15).

7. Using screwdriver in slot (16), pry clear lens and preformed packing (17) free of headlamp
body (13). Set aside for later use.

8. Remove packing material from one infrared lens (6) and set packing material aside for later
use.

9. Install infrared lens (6) into headlamp body (13) so curve of lens faces out.

10. Put lens holder plate (15) on headlight body (13) and, using screwdriver, screw in four
screws (14) until tight.

11. Swing headlight guard (12) back into position and using 19 mm socket and handle, install
screw (10) and washer (11).

12. Using 19 mm socket and handle, tighten screw (9).

13. Repeat steps 2 thru 12 for other side headlight.

14. Using packing material removed from infrared headlight lenses (6), wrap clear lenses and
preformed packings (17) and stow in oddment box (7) under commander's armrest (8).

0085-4
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

USE INFRARED LENSES - Continued

WARNING
Stoplights will not work when connectors (18) are connected to dummy plugs
(19). This will happen no matter where LIGHTS switch is set to OPERATE
OUTSIDE LIGHTS. Vehicles behind you will not see lights when tank brakes are
used. If a trailing vehicle driver does not know your vehicle is braking, they may
hit your vehicle causing damage to equipment and possible injury to personnel.

15. At back of tank, reach through hole (20) in top of taillight guard (21).

16. Using pliers, remove cap (22) from dummy plug (19).

17. Using pliers, remove connector (18) from taillight plug (23).

NOTE
Connector (18) can be installed on dummy plug (19) in only one position. Large
key on connector (18) must fit into large slot in dummy plug (19).

18. Put connector (18) on dummy plug (19).

19. Put cap (22) on taillight plug (23).

20. Repeat steps 15 thru 19 for other side taillight.

0085-5
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

USE INFRARED LENSES - Continued

WARNING
Do not look at headlights when infrared lenses have been installed. Eye injury
can result.

21. Turn on headlights (WP 0085).

22. Check that headlights are working by feeling in front of infrared lenses with hand. Heat
should be felt. If no heat is felt, headlight is not working. Replace headlight lamp (Vol 3,
WP 0379).

23. When infrared lenses are no longer needed:

a. Remove infrared lenses.

b. Replace clear lenses and preformed packings.

c. Stow infrared lenses.

d. Aline connector keyways and install connector (18) back on taillight plug (23).

e. Put cap (22) back on dummy plug (19).

END OF TASK

0085-6
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL NIGHT VISION VIEWER IN DRIVER'S HATCH

NOTE
Driver's hatch must be closed (WP 0088) to install night vision viewer (24).

1. Hold center periscope (25) in place with one hand.

2. If equipped with wingnut retainers, go to step 3. If equipped with quick-release retainers, go

to step 4.

3. Wingnut retainers:

a. Loosen four wingnuts (26).

b. Turn two holding clamps (27) away from base of periscope (25).

c. Go to step 5.

0085-7
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL NIGHT VISION VIEWER IN DRIVER'S HATCH - Continued

4. Quick-release retainers:

a. Squeeze handle (28) on left or right quick-release retainer (29) and rotate to center.

b. Squeeze handle (28) on remaining quick-release retainer (29) and rotate to center.

NOTE
While removing periscope, have crewmember hold wiper out.

5. Remove center periscope (25).

WARNING
Do not extend any part of body from turret into driver's station unless turret lock
is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is traversed while
you are between turret and driver's station.

6. Have loader remove night vision viewer (24) from beneath loader's seat and pass through
turret basket opening.

0085-8
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL NIGHT VISION VIEWER IN DRIVER'S HATCH - Continued

7. Remove lens covers from night vision viewer (24) and pass lens covers and periscope (25)
back to loader through turret basket opening.

8. Have loader stow periscope (25) and lens covers beneath loader's seat.

9. Move wiper blades to a vertical position and hold away from opening. Push night vision
viewer (24) into hole that periscope (25) was removed from, and hold.

10. If equipped with wingnut retainers, go to step 11. If equipped with quick-release retainers,
go to step 12.

0085-9
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL NIGHT VISION VIEWER IN DRIVER'S HATCH - Continued

WARNING
Do not use any tools to mount night vision viewer. Wingnuts or quick-release
retainers should be finger tight only, just enough to secure night vision viewer. If
wingnuts or quick-release retainers are too tight, driver will not be able to
quickly remove viewer and open hatch to exit vehicle.

11. Wingnut retainers:

a. Turn two holding clamps (27) over base of night vision viewer.

b. Finger tighten wingnuts (26) to hold night vision viewer (24) in place.

c. Go to step 13.

12. Quick-release retainers:

a. Rotate left or right handle (28) outward until lock pin (30) locks into hole (31).

b. Rotate remaining handle (28) outward until lock pin (30) locks into hole (31).

13. Check that night vision viewer (24) can be turned left or right freely. If not, notify field main-
tenance.

END OF TASK

0085-10
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE NIGHT VISION VIEWER IN DRIVER'S HATCH ON TANK POWER

NOTE
VEHICLE MASTER POWER switch (1) must be set to ON for night vision
viewer (24) to work on tank power.

1. To operate night vision viewer (24) on tank power:

a. Make sure NIGHT PERISCOPE switch (32) is set to OFF.

b. Unscrew and remove battery cap (33) from night vision viewer (24).

WARNING

• Do not extend any part of body from turret into driver's station unless turret
lock is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is tra-
versed while you are between turret and driver's station.

• Remove viewer battery from night vision viewer (24) and pass to loader
through turret basket opening, for stowage beneath loader's seat, before
connecting cable. An installed battery will overheat and may explode when
tank power is used, causing injury to you or damage to equipment.

c. Make sure there is no battery in night vision viewer (24).

d. Screw battery cap (33) on to night vision viewer (24) until tight.

e. Remove cap (34) from plug (35).

f. Remove connector (36) on power cable (37) from dummy plug (38).

0085-11
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE NIGHT VISION VIEWER IN DRIVER'S HATCH ON TANK

POWER - Continued

g. Aline connector (36) with plug (35). Push in and turn 1/4-turn clockwise.

h. Set NIGHT PERISCOPE switch (32) to ON. NIGHT PERISCOPE light (39) should light.
If not, do Troubleshooting (Vol 2, WP 0350).

i. Look at screen (40).

j. Turn OFF-BRIGHT knob (41) all the way toward BRIGHT.

k. If view on screen (40) is too bright, turn OFF-BRIGHT knob (41) back toward OFF until
view on screen (40) is clear.

l. Turn night vision viewer (24) left or right to see when making turns with tank.

0085-12
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE NIGHT VISION VIEWER IN DRIVER'S HATCH ON TANK

POWER - Continued

2. To power down night vision viewer (24) after operation on tank power:

a. Set NIGHT PERISCOPE switch (32) to OFF.

b. Turn OFF-BRIGHT knob (41) to OFF.

c. Remove connector (36) from plug (35).

d. Screw connector (36) on dummy plug (38) until tight.

e. Screw cap (34) on plug (35) until tight.

END OF TASK

0085-13
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE NIGHT VISION VIEWER ON BATTERY POWER

WARNING
Do not extend any part of body from turret into driver's station unless turret lock
is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is traversed while
you are between turret and driver's station.

NOTE
Use battery only when tank power is not available.

1. To operate night vision viewer (24) on battery power:

a. Make sure cap (34) is screwed on plug (35).

b. Remove battery cap (33).

c. Have loader get battery (42) from beneath loader's seat and pass it through turret bas-
ket opening.

d. Put battery (42) into night vision viewer (24), positive (+) end first.

e. Screw battery cap (33) on night vision viewer (24) until tight.

f. Look at screen (40).

g. Turn OFF-BRIGHT knob (41) all the way to BRIGHT.

h. If view on screen (40) is too weak, replace battery (42). If view on screen (40) is too
bright, turn OFF-BRIGHT knob (41) back toward OFF until view on screen (40) is clear.

i. Turn night vision viewer (24) left or right to see when making turns with tank.

0085-14
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE NIGHT VISION VIEWER ON BATTERY POWER - Continued

2. To power down night vision viewer (24) after operation on battery (42):

a. Turn OFF-BRIGHT knob (41) to OFF.

b. Remove battery cap (33).

c. Remove battery (42) and pass to loader for stowage beneath loader's seat.

d. Screw battery cap (33) on night vision viewer (24) until tight.

END OF TASK

0085-15
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

REMOVE NIGHT VISION VIEWER FROM DRIVER'S HATCH

NOTE
Power down night vision viewer (24) if on tank or battery power, see OPERATE
OUTSIDE LIGHTS, before removing.

1. Hold night vision viewer (24) in place with one hand.

2. If equipped with wingnut retainers, go to step 3. If equipped with quick-release retainers, go

to step 4.

3. Wingnut retainers:

a. Loosen four wingnuts (26).

b. Turn two holding clamps (27) away from base of night vision viewer (24).

c. Go to step 5.

4. Quick-release handles:

a. Squeeze handle (28) on left or right quick-release retainer (29) and rotate to center.

b. Squeeze handle (28) on remaining quick-release retainer (29) and rotate to center.

5. Remove night vision viewer (24).

0085-16
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

REMOVE NIGHT VISION VIEWER FROM DRIVER'S HATCH - Continued

WARNING
Do not extend any part of body from turret into driver's station unless turret
traverse lock is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is
traversed while you are between turret and driver's station.

6. Have loader pass lens covers from beneath loader's seat and put on night vision
viewer (24).

7. Pass night vision viewer (24) to loader through turret basket opening and have night vision
viewer (24) stowed beneath loader's seat.

8. Have loader pass periscope (25) from beneath loader's seat.

9. Hold wiper blade away from opening and push middle periscope (25) into hole from which
night vision viewer (24) was removed.

10. If equipped with wingnut retainers, go to step 11. If equipped with quick-release retainers,
go to step 12.

0085-17
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

REMOVE NIGHT VISION VIEWER FROM DRIVER'S HATCH - Continued

11. Wingnut retainers:

a. Turn two holding clamps (27) over base of periscope (25).

b. Tighten four wingnuts (26).

c. Go to step 13.

12. Quick-release retainers:

a. Rotate left or right handle (28) outward until lock pin (30) locks into hole (31).

b. Rotate remaining handle (28) outward until lock pin (30) locks into hole (31).

13. Adjust center periscope (WP 0054).

END OF TASK

0085-18
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL DRIVER'S VISION ENHANCER (DVE) IN DRIVER'S HATCH

NOTE
Driver's hatch must be closed (WP 0088) to install DVE (43).

1. Hold center periscope (25) in place with one hand.

2. If equipped with wingnut retainers, go to step 3. If equipped with quick-release retainers, go

to step 4.

3. Wingnut retainers:

a. Loosen four wingnuts (26).

b. Turn two holding clamps (27) away from base of periscope (25).

c. Go to step 5.

4. Quick-release retainers:

a. Squeeze handle (28) on left or right quick-release retainer (29) and rotate to center.

b. Squeeze handle (28) on remaining quick-release retainer (29) and rotate to center.

0085-19
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL DRIVER'S VISION ENHANCER (DVE) IN DRIVER'S HATCH - Continued

NOTE
While removing periscope, have crewmember hold wiper out.

5. Remove center periscope (25).

WARNING
Do not extend any part of body from turret into driver's station unless turret lock
is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is traversed while
you are between turret and driver's station.

6. Have loader remove DVE (43) from beneath loader's seat and pass through turret basket
opening.

7. Pass periscope (25) back to loader through turret basket opening.

8. Have loader stow periscope (25) beneath loader's seat.

9. Move wiper blades to a vertical position and hold away from opening. Insert DVE (43) into
hole that periscope (25) was removed from, and hold.

10. If equipped with wingnut retainers, go to step 11. If equipped with quick-release retainers,
go to step 12.

0085-20
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL DRIVER'S VISION ENHANCER (DVE) IN DRIVER'S HATCH - Continued

11. Wingnut retainers:

a. Turn two holding clamps (27) over base of DVE (43).

WARNING
Do not use any tools to mount DVE. Wingnuts or quick-release retainers should
be finger tight only, just enough to secure DVE. If wingnuts or quick-release
retainers are too tight, driver will not be able to quickly remove DVE and open
hatch to exit vehicle.

b. Finger tighten four wingnuts (26) to hold DVE (43) in place.

c. Go to step 13.

0085-21
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL DRIVER'S VISION ENHANCER (DVE) IN DRIVER'S HATCH - Continued

12. Quick-release retainers:

a. Rotate left or right handle (28) outward until lock pin (30) locks into hole (31).

b. Rotate remaining handle (28) outward until lock pin (30) locks into hole (31).

13. Remove connector (36) on power cable (37) from dummy connector (38).

14. Set DVE POWER switch (44) to off.

15. Align connector (36) with POWER (A1J1) connector (45) on back of DVE (43). Push in and
turn 1/4 turn clockwise.

0085-22
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

INSTALL DRIVER'S VISION ENHANCER (DVE) IN DRIVER'S HATCH - Continued

16. If equipped with Rear View Sensor System (RVSS), connect video cable 2W652-9 to EXT
VIDEO IN (A1J3) coaxial connector (46) on back of DVE (43). Push in and turn 1/4 turn
clockwise.

END OF TASK

PREPARE DRIVER'S VISION ENHANCER (DVE) FOR OPERATIONS

WARNING
Before driving or operating vehicle, ensure DVE (43) azimuth and elevation
controls (47) are positioned in the locked straight ahead and level 0° detent
viewing positions. Failure to ensure driver is looking straight ahead when driv-
ing or operating vehicle could result in injury to personnel and damage to
equipment.

NOTE
Before applying power to DVE (43), ensure that the following control positions
are set as indicated in the following steps.

1. Ensure DVE (43) POWER switch (44) is set to off.

2. Rotate HEAD MIRROR azimuth and elevation controls (47) to the straight ahead and level
0° detent positions.

3. Set SENSOR LEVEL (48) and GAIN (49) controls to full counterclockwise (automatic)
detent positions.

4. With the DISPLAY BRIGHTNESS control knob (50) turned fully counterclockwise, rotate the
knob approximately 1/4 turn clockwise.

5. Set POLARITY switch (51) to WHT-HOT.

0085-23
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

PREPARE DRIVER'S VISION ENHANCER (DVE) FOR OPERATIONS - Continued

6. Set VIDEO switch (52) to SENSOR.

END OF TASK

0085-24
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE DVE

NOTE
• The time required for DVE electronics to stabilize depends on ambient tem-
perature. As ambient temperature rises or cools, stabilization time changes
slightly.

• The words NO-VIDEO will appear within a black rectangle at the top center
of the display only if the VIDEO switch (52) is in the EXT (down) position or
the display circuitry has no video input. DVE display circuitry senses the
presence of video. If the video is absent during operation, the words
NO-VIDEO are indicated. If video returns, the words NO-VIDEO are
removed but the indicator bar remains to indicate an intermittent loss of
video. The no video indicator bar is removed by recycling the power switch.
If NO-VIDEO is displayed and the video switch is in the SENSOR (up) posi-
tion, notify field maintenance.

• VEHICLE MASTER POWER (1) on DRIVER'S MASTER PANEL (53) must

be ON and DVE power cable must be connected to DVE for DVE to power
up.

1. To power up DVE (43) do the following:

a. Ensure DVE (43) is properly set up, see Prepare Driver's Vision Enhancer (DVE) for
Operations, in this work package.

b. Set VEHICLE MASTER POWER toggle switch (1) to ON.

c. Set NIGHT PERISCOPE toggle switch (32) to ON.

d. Set POWER toggle switch (54) on DVE (43) to ON (up).

e. Check that POWER ON light (55) on DVE (43) illuminates. Allow approximately 5 min-
utes for system electronics to stabilize for maximum image clarity.

0085-25
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE DVE - Continued

WARNING
Before driving or operating vehicle, ensure DVE (43) azimuth and elevation
controls are positioned in the locked straight ahead and level 0° detent viewing
positions. Failure to ensure driver is looking straight ahead when driving or
operating vehicle could result in injury to personnel and damage to equipment.

NOTE
• When the VIDEO switch (52) is in EXT (down) position, NO VIDEO message
will appear in indicator bar at top center of display, until an external video
input is supplied to the display module (56).

• VIDEO SWITCH (52) is normally set to SENSOR (up) for sending input from
the Sensor Module (57) to the Display Module (56). For external input to the
Display Module (56), VIDEO switch (52) is set to EXT (down).

2. For normal vehicle operations, set VIDEO switch (52) to SENSOR (up).

3. While looking directly into Display Module (56), adjust seat height as necessary and/or
loosen two display tilt adjustment knobs (58) on display, and adjust tilt of Display Module
(56) up or down as required until best viewing angle is obtained. Tighten display tilt adjust-
ment knobs (58).

0085-26
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE DVE - Continued

WARNING
Certain meteorological conditions may degrade the picture presented by the
DVE. During periods of degraded visibility, such as smoke, dust, rain, or fog, or
under conditions of low thermal contrast, identification/recognition distance of
some objects will be reduced. Vehicle driving speed must be adjusted to suit the
prevailing conditions and terrain.

NOTE
• The DISPLAY BRIGHTNESS control (50) should not be adjusted too high or
the scene may be uncomfortable to view and some useful information may
be lost.

• If the ambient light within the vehicle changes, it may be necessary to com-
pensate by readjusting the DISPLAY BRIGHTNESS control (50).

4. Adjust DISPLAY BRIGHTNESS control (50) as required for best viewing.

5. To set video level, do the following:

a. Before driving vehicle, turn SENSOR LEVEL control knob (48) counterclockwise to full
detent position to set SENSOR LEVEL to AUTO. Sensor video level will be adjusted
automatically as vehicle is driven.

b. To operate DVE in stationary vehicle, turn SENSOR LEVEL control knob (48) out of
AUTO position as needed until best image is obtained.

0085-27
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE DVE - Continued

6. To set video gain, do the following:

a. Before driving vehicle, turn SENSOR GAIN control knob (49) counterclockwise to full
detent position to set SENSOR gain to AUTO. Sensor video gain level will be adjusted
automatically as vehicle is driven.

b. To operate DVE in stationary vehicle, turn SENSOR GAIN control knob (49) out of
AUTO position as needed until best image is obtained.

7. Set POLARITY switch (51) to WHT-HOT or BLK-HOT as desired. A small rectangle at the
lower left corner of display screen (56) indicates switch position. A clear rectangle indicates
WHT-HOT, a dark rectangle indicates BLK-HOT.

0085-28
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

OPERATE DVE - Continued

WARNING
Drive vehicle ONLY in the straight ahead and level 0° degree detent viewing
positions. Before driving or operating vehicle, ensure DVE (43) azimuth and
elevation controls are positioned in the locked straight ahead and level 0° detent
viewing positions. Failure to ensure driver is looking straight ahead when driv-
ing or operating vehicle could result in injury to personnel and damage to
equipment.

8. When vehicle is stationary, DVE azimuth and vertical viewing areas can be adjusted left or
right, and up or down, respectively.

a. To adjust azimuth viewing angle, pull azimuth lock (59) down and move azimuth handle
(60) left or right as needed. Release azimuth lock handle (59). Moving azimuth handle
(60) back to enter position and releasing azimuth lock handle (59) will lock head mir-
ror (61) into straight ahead position for driving vehicle. Ensure white line on adaptor
(62) is alined to second white line on azimuth bracket assembly (63) for DVE
straight-ahead position.

b. To adjust vertical viewing area, pull elevation handle (64) rearward for full elevation
field-of-regard. Push elevation handle (64) forward to lower elevation field-of-regard.
Set elevation control handle (64) to zero degree level position for driving vehicle.

END OF TASK

0085-29
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

POWER DOWN AND REMOVE DRIVER'S VISION ENHANCER (DVE) FROM DRIV-
ER'S HATCH
1. Set POWER switch (44) to OFF.

2. Set head mirror azimuth and elevation adjustments to the locked straight-ahead and 0° level
positions.

3. Switch NIGHT PERISCOPE toggle switch (32) to OFF on Driver's Master Panel (DMP) (53).

4. Disconnect power cable (37) from DVE (43) and reconnect to dummy connector (38). If
equipped with RVSS, disconnect video cable 2W652-9 from EXT VIDEO IN (A1J3) coaxial
connector (46). Replace VIDEO IN (A1J3) cover. Stow cable beneath driver's master panel.

5. Hold DVE (43) in place with one hand.

6. If equipped with wingnut retainers, go to step 7. If equipped with quick-release retainers, go

to step 8.

0085-30
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

POWER DOWN AND REMOVE DRIVER'S VISION ENHANCER (DVE) FROM DRIV-
ER'S HATCH - Continued

7. Wingnut retainers:

a. Loosen four wingnuts (26).

b. Turn two holding clamps (27) away from base of DVE (43).

c. Go to step 13.

8. Quick-release handles:

a. Squeeze handle (28) on left or right quick-release retainer (29) and rotate to center.

b. Squeeze handle (28) on remaining quick-release retainer (29) and rotate to center.

0085-31
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

POWER DOWN AND REMOVE DRIVER'S VISION ENHANCER (DVE) FROM DRIV-
ER'S HATCH - Continued

9. Remove DVE (43).

10. Pass DVE (43) to loader through turret basket opening and have DVE (43) stowed beneath
loader's seat.

11. Have loader pass periscope (25) from beneath loader's seat and pass through turret basket
opening.

12. Move wiper blades to a vertical position and hold away from opening. Push periscope (25)
into hole that DVE (43) was removed from, and hold.

13. If equipped with wingnut retainers, go to step 14. If equipped with quick-release retainers,
go to step 15.

14. Wingnut retainers:

a. Turn two holding clamps (27) over base of periscope (25).

0085-32
 TM 9-2350-264-10-1 0085

DRIVE TANK (DRIVE AT NIGHT) - Continued

POWER DOWN AND REMOVE DRIVER'S VISION ENHANCER (DVE) FROM DRIV-
ER'S HATCH - Continued

b. Tighten four wingnuts (26).

c. Go to step 16.

15. Quick-release retainers:

a. Rotate left or right handle (28) outward until lock pin (30) locks into hole (31).

b. Rotate remaining handle (28) outward until lock pin (30) locks into hole (31).

16. Adjust center periscope (WP 0054).

END OF TASK

END OF WORK PACKAGE

0085-33/34 blank
 SHUT DOWN ENGINE - Continued

TM 9-2350-264-10-1 0086

OPERATOR MAINTENANCE
SHUT DOWN ENGINE

INITIAL SETUP:
References References (continued)
WP 0078 WP 0080
WP 0079 Vol 2, WP 0350

1. Twist throttle handgrips (1) forward to idle position.

2. Press and hold service brake pedal (2) to stop tank.

3. Set shift control (3) to N.

CAUTION

Repeated use of parking brake system without turret power on could cause lack
of hydraulic pressure and failure of parking brake system.

4. Check parking brake system hydraulic pressure gage (4).

a. Parking brake system hydraulic pressure gage (4) should be steady and show 1200 psi
to 1800 psi pressure.

b. If parking brake system hydraulic pressure gage (4) shows 800 psi to 1200 psi, or more
than 1800 psi, apply parking brake, but notify field maintenance as soon as possible.

c. If parking brake system hydraulic pressure gage (4) shows less than 800 psi, parking
brake may not hold tank. Notify field maintenance immediately. Place blocks under front
and rear of tracks.

0086-1
 TM 9-2350-264-10-1 0086

SHUT DOWN ENGINE - Continued

5. Press parking brake pedal (5) all the way and then let go.

6. Let go of service brake pedal (2).

7. Check that MASTER WARNING light (6) and PARKING/SERVICE BRAKES light (7) are lit.
If not, do Troubleshooting (Vol 2, WP 0350).

8. Notify tank commander to turn off Nuclear, Biological, Chemical (NBC) main system.

9. Set TACTICAL IDLE switch (8) to OFF.

10. Make sure BILGE PUMP switch (9) is set to OFF and BILGE PUMP light (10) is not lit.

0086-2
 TM 9-2350-264-10-1 0086

SHUT DOWN ENGINE - Continued

11. Make sure SMOKE GENERATOR switch (11) is set to OFF and SMOKE GENERATOR light
(12) is not lit.

NOTE
Any other AUXILIARY SYSTEMS switches (13) and LIGHTS switch (14), if not
being used, should also be set to OFF.

12. Check that ENGINE warning lights (15), TRANSMISSION warning lights (16), and FIRE
light (17) are not lit. If lit, do immediate action for the light(s) (WP 0078).

13. Check that MASTER CAUTION light (18) is not lit. If lit, see (WP 0079).

0086-3
 TM 9-2350-264-10-1 0086

SHUT DOWN ENGINE - Continued

CAUTION
Failure to perform engine cool-down (step 14) or timed engine cool-down (step
15) can result in serious engine damage.

NOTE
If tank is equipped with Digital Electronic Control Unit (DECU), go to step 15.

14. Allow engine to idle for 2 minutes and then go to step 16.

NOTE
In an emergency, timed engine cool-down can be aborted by driving tank
(WP 0080), by setting TACTICAL IDLE switch (19) momentarily to ON position,
or by setting ENGINE SHUTOFF switch (20) down to SHUTOFF and then let-
ting go.

15. Perform timed engine cool-down.

a. Set STARTER ONLY switch (21) to ENGAGED and then release. FUEL CONTROL
FAULTY light (22) will flash slowly.

b. When FUEL CONTROL FAULTY light (22) stops flashing, go to step 16.

16. Pull out and set ENGINE SHUTOFF switch (20) down to SHUTOFF and then let go. Engine
will coast to a stop in 30 seconds to 60 seconds.

0086-4
 TM 9-2350-264-10-1 0086

SHUT DOWN ENGINE - Continued

17. If engine does not shut down, do Troubleshooting (Vol 2, WP 0350).

NOTE
If equipped with Forward Looking Infrared (FLIR), Thermal Receiver Unit (TRU)
cooling fan, and INU will remain on for 60 seconds after master power is shut
off.

18. If engine shuts down in less than 30 seconds or more than 60 seconds, notify field mainte-
nance.

19. Put steer-throttle control (23) in stowed position.

a. Grasp and hold center housing (24).

b. Pull out and hold large knob (25).

c. Push steer-throttle control (23) to stowed position.

d. Let go of large knob (25) to lock steer-throttle control (23).

e. Shake steer-throttle control (23) to make sure it is locked in place.

END OF TASK

END OF WORK PACKAGE

0086-5/6 blank
POWER DOWN AND SECURE STATION (POWER DOWN HULL
SYSTEMS) - Continued
TM 9-2350-264-10-1 0087

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (POWER DOWN HULL SYSTEMS)

INITIAL SETUP:
References References (continued)
WP 0104 Vol 2, WP 0339
Vol 2, WP 0269 Vol 2, WP 0350

CAUTION
Ensure External Auxiliary Power Unit (EAPU) OUTPUT POWER switch is set to
OFF to prevent electrical system lock-up (Vol 2, WP 0269).

1. Make sure the following switches on the Driver's Master Panel (DMP) (1) are in the OFF
position:

a. PERSONNEL HEATER (2).

b. NIGHT PERISCOPE (3).

c. BILGE PUMP (4).

d. SMOKE GENERATOR (5).

e. LIGHTS (6).

f. HI BEAM (7).

g. TACTICAL IDLE (8).

2. Check that the following lights are not lit:

a. PERSONNEL HEATER (9).

b. NIGHT PERISCOPE (10).

c. BILGE PUMP (11).

d. SMOKE GENERATOR (12).

e. HI BEAM (13).

0087-1
 TM 9-2350-264-10-1 0087

POWER DOWN AND SECURE STATION (POWER DOWN HULL

SYSTEMS) - Continued

3. If any light(s) listed in step 2 is lit, do Troubleshooting (Vol 2, WP 0350).

4. Make sure TANK SELECTOR switch (14) is set to REAR.

5. Move drain valve handle(s) (15) up to open.

CAUTION

If equipped with Force XXI Battle Command Brigade and Below (FBCB2), do
not power down tank with FBCB2 running. FBCB2 software may get corrupted
and FBCB2 will not power up again.

NOTE
• Driver, turn VEHICLE MASTER POWER switch (16) to OFF only when
directed to do so by tank commander.

• VEHICLE MASTER POWER switch (16) on DMP (1) may be set to OFF
immediately after ENGINE SHUTOFF switch (17) has been set to SHUTOFF.
VEHICLE MASTER POWER light (18) will go off automatically 30 seconds
after engine has completed shutdown cycle.

• Personnel heater may keep running for a short time after VEHICLE MAS-
TER POWER switch (16) has been set to OFF.

6. If equipped with FBCB2, make sure FBCB2 is not running. If FBCB2 is running, have com-
mander shut down FBCB2 (WP 0104) before shutting down tank.

0087-2
 TM 9-2350-264-10-1 0087

POWER DOWN AND SECURE STATION (POWER DOWN HULL

SYSTEMS) - Continued

NOTE
If equipped with Forward Looking Infrared (FLIR), Thermal Receiver Unit (TRU)
cooling fan and Inertial Navigation Unit (INU) will remain on for 60 seconds after
master power is shut off.

7. Set and hold VEHICLE MASTER POWER switch (16) to OFF for 1 second and then let it
go.

NOTE
Do IMMEDIATE ACTION FOR VEHICLE MASTER POWER FAILURE TO
POWER DOWN (Vol 2, WP 0339) if field maintenance is not available.

8. VEHICLE MASTER POWER light (18) should go off; if not, notify field maintenance.

END OF TASK

END OF WORK PACKAGE

0087-3/4 blank
POWER DOWN AND SECURE STATION (CLOSE DRIVER'S HATCH) - Continued

TM 9-2350-264-10-1 0088

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (CLOSE DRIVER'S HATCH)

INITIAL SETUP:
Not Applicable

WARNING
• Hatches must not be operated when tank is moving except in case of emer-
gency.

• Maintain firm grip on ball (1) at end of lever (2) and on handle (3) when rais-
ing or lowering driver's seat (4). Lost fingers or other injuries on driver's left
hand may result if seat parts fail and hand slips off ball (1).

1. To lower driver's seat (4) for closing hatch, hold handle (3) and raise body weight from driv-
er's seat (4). Grasp ball (1) on lever (2) and pull ball (1) towards driver's seat (4). Hold ball
(1) while lever (2) goes forward and lowers driver's seat (4).

0088-1
 TM 9-2350-264-10-1 0088

POWER DOWN AND SECURE STATION (CLOSE DRIVER'S HATCH) - Continued

NOTE
If latch (5) is hard to move, squeeze hatch handcrank (6) and turn clockwise to
remove pressure.

2. Lift and hold latch (5) using left hand.

3. Squeeze hatch handcrank (6) using right hand.

4. Turn hatch handcrank (6) counterclockwise about one turn.

5. Let go of latch (5).

6. Turn hatch handcrank (6) counterclockwise until hatch (7) is over opening.

7. Reach over right shoulder with right hand and grasp hatch lifting handle (8).

8. Press and hold button (9).

9. Pull down handle (8) until it snaps into clip (10) and then let go.

END OF TASK

END OF WORK PACKAGE

0088-2
 EXIT TANK - Continued

TM 9-2350-264-10-1 0089

OPERATOR MAINTENANCE
EXIT TANK

INITIAL SETUP:
Personnel Required References (continued)
Two WP 0086
Vol 2, WP 0194
References Vol 2, WP 0234
WP 0049
WP 0053 Vol 2, WP 0242

1. Have turret crewmember position main gun over back deck and lock turret lock (Vol 2,
WP 0194).

2. Disconnect CVC cord from intercom control box (Vol 2, WP 0242).

3. Stow steer-throttle control (WP 0086).

4. Lower upper seat back (WP 0053).

5. Raise headrest (WP 0053).

6. Swing safety guard (1) back against ammunition stowage box (2).

WARNING
Do not extend any part of body between turret and driver's station unless turret
lock is set to LOCKED (Vol 2, WP 0194). You can be killed if turret is traversed
while you are between turret and driver's station.

7. Move out of driver's seat and into turret.

0089-1
 TM 9-2350-264-10-1 0089

EXIT TANK - Continued

8. Exit tank through loader's hatch (WP 0049).

9. Close and lock loader's hatch (Vol 2, WP 0234).

10. Dismount tank over front slope.

END OF TASK

END OF WORK PACKAGE

0089-2
DRIVER'S STATION: ADDITIONAL REFERENCES - Continued

TM 9-2350-264-10-1 0090

OPERATOR MAINTENANCE
DRIVER'S STATION: ADDITIONAL REFERENCES

INITIAL SETUP:
References References (continued)
WP 0045 WP 0047

1. PREPARE STATION FOR OPERATION (OPERATE INTERCOM) (WP 0045)

2. PREPARE STATION FOR OPERATION (OPERATE DOME LIGHT) (WP 0047)

END OF TASK

END OF WORK PACKAGE

0090-1/2 blank
PREPARE STATION FOR OPERATION (CLEAR DIGITAL ELECTRONIC CONTROL
UNIT (DECU) DISPLAY/CLEAR FAULT HISTORY) - Continued
TM 9-2350-264-10-1 0090.1

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (CLEAR DIGITAL ELECTRONIC CONTROL
UNIT (DECU) DISPLAY/CLEAR FAULT HISTORY)

INITIAL SETUP:
Personnel Required References (continued)
Two DA FORM 2404
References DA FORM 5899-E
WP 0058

NOTE
This procedure is only for vehicles with DECU J5 (1), or if equipped DECU J7
(2), and is used to erase old fault data. Perform this procedure prior to perform-
ing PREPARE STATION FOR OPERATION (CHECK PERCENT DAY POWER
OR MISSION CAPABILITY POWER - PERFORM DECU ENGINE HEALTH
CHECK (WP 0058), whenever pervious fault data history is presented during
initial built-in testing.

1. Set VEHICLE MASTER POWER switch (3) on Driver's Master Panel (DMP) (4) to ON.

NOTE
Once ENGINE SHUTOFF switch (5) has been engaged, it must be held in shut-
off position until the procedure is complete. Failure to do so will result in failure
to clear DECU fault history.

0090.1-1 Change 1
 TM 9-2350-264-10-1 0090.1

PREPARE STATION FOR OPERATION (CLEAR DIGITAL ELECTRONIC CONTROL

UNIT (DECU) DISPLAY/CLEAR FAULT HISTORY) - Continued

2. Engage and hold ENGINE SHUTOFF switch (5) in SHUTOFF (down) position. FUEL CON-
TROL FAULTY light (6) on Driver's Instrument Panel (DIP) (7) will light in approximately
three seconds.

3. Once FUEL CONTROL FAULTY light (6) on DIP (7) is lit, move shift selector (8) from Neu-
tral (N) to Pivot (PVT) and back to N.

4. Set ENGINE TACTICAL IDLE switch (9) to ON.

5. Rotate throttle control handles (10) back to highest throttle position.

6. Rotate throttle control handles (10) forward to lowest throttle position.

Change 1 0090.1-2
 TM 9-2350-264-10-1 0090.1

PREPARE STATION FOR OPERATION (CLEAR DIGITAL ELECTRONIC CONTROL

UNIT (DECU) DISPLAY/CLEAR FAULT HISTORY) - Continued

7. Set ENGINE TACTICAL IDLE switch (9) to OFF.

8. Continue holding ENGINE SHUTOFF switch (5) in OFF position and inform crewman in tur-
ret to perform Built-in-Test (BIT) procedure on DECU J5 (1), or if equipped J7 (2).

9. Press either pushbutton (11) in the shorting cap (12) or inline pushbutton (13), when
equipped with harness DECU-2W520-E (14). Release pushbutton (11) or (13) immediately
upon hearing engine starter engage or engine will not start.

0090.1-3 Change 1
 TM 9-2350-264-10-1 0090.1

PREPARE STATION FOR OPERATION (CLEAR DIGITAL ELECTRONIC CONTROL

UNIT (DECU) DISPLAY/CLEAR FAULT HISTORY) - Continued

NOTE
If DECU does not display BIT results after pressing pushbutton (11) in shorting
cap (12) or the inline pushbutton (13) when equipped with harness DECU-
2W520-E (14), repeat steps 1 thru 9. If DECU BIT results are not displayed a
second time, notify field maintenance.

10. Observe information displayed in window (15) on DECU and record results of BIT.

a. If DECU J5 (1), or if equipped J7 (2), is programmed with newer software, BIT results
will be displayed as follows:

(1) Software issue (S/W ISS XXX).

(2) Percent Day Power and date (XXX % DDMMYY). If Day Power is less than 60%,
notify field maintenance.

(3) Mission Capability Power number (MCP NO. XX). Record MCP number.

(4) NO FAULTS, which will indicate that fault history is clear, will be displayed.

(5) If fault is detected, fault code(s) will be displayed, followed by no more faults (NO
MORE FLTS) Record fault codes on DA Form 2404 or DA Form 5899-E and notify
field maintenance that DECU failed to clear fault history.

b. If equipped with DECU J7 (2), with newer software, message should read:

(1) Software issue (S/W J7_XX_XX).

(2) Percent Day Power and date (XXX% DDMMYY). If Day Power is less than 60%,
notify field maintenance.

(3) Mission Capability Power number (MCP NO. XX).

(4) NO FAULTS, which will indicate that fault history is clear, will be displayed.

(5) If fault is detected, fault code(s) will be displayed, followed by no more faults (NO
MORE FLTS) Record fault codes on DA Form 2404 or DA Form 5899-E and notify
field maintenance that DECU failed to clear fault history.
END OF TASK

END OF WORK PACKAGE

Change 1 0090.1-4
 TM 9-2350-264-10-1

CHAPTER 5

OPERATOR INSTRUCTIONS: COMMANDER'S STATION

 GENERAL - Continued

TM 9-2350-264-10-1 0091

OPERATOR MAINTENANCE
GENERAL

INITIAL SETUP:
Not Applicable

The commander is responsible for knowing the operation of other crew stations, with special
attention to any warnings and cautions that apply. Make sure all crewmembers adhere to hear-
ing protection requirements on page h.

END OF WORK PACKAGE

0091-1/2 blank
PREPARE STATION FOR OPERATION (ENTER TANK COMMANDER'S
STATION) - Continued
TM 9-2350-264-10-1 0092

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ENTER TANK COMMANDER'S STATION)

INITIAL SETUP:
References
WP 0044

CAUTION

Avoid excessive speed when operating the tank over terrain that is unusually
rough and when crossing ditches. Damage to track and suspension compo-
nents could occur if excessive speed is used.

1. Mount and enter tank through loader's hatch (WP 0044).

2. Make sure that GUN/TURRET DRIVE switch (1) on loader's panel (2) is down in MANUAL
position.

3. Make sure SAFE/ARMED handle (3) is down in safe position.

4. Go to tank commander's station.

END OF TASK

END OF WORK PACKAGE

0092-1/2 blank
PREPARE STATION FOR OPERATION (OPERATE COMMANDER'S ARM
GUARD) - Continued
TM 9-2350-264-10-1 0093

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (OPERATE COMMANDER'S ARM GUARD)

INITIAL SETUP:
Not Applicable

1. Pull commander's arm guard (1) from stowage position, straight up and hook end (2) over
hook (3) on turret roof when main gun is to be fired.

2. When firing is completed guard (1) may be stowed.

3. Push latch (4) away from guard (1) to disengage.

4. Remove end (2) from hook (3).

5. Slide arm guard (1) down into stowage position.

END OF TASK

END OF WORK PACKAGE

0093-1/2 blank
PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION
AND TURRET) - Continued
TM 9-2350-264-10-1 0094

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION
AND TURRET)

INITIAL SETUP:
References References (continued)
WP 0102 Vol 2, WP 0350
Vol 2, WP 0257 Vol 3, WP 0375
Vol 2, WP 0269

CAUTION

• Ensure EAPU OUTPUT POWER switch is set to OFF to prevent electrical

system lock-up (Vol 2, WP 0269).

NOTE
• Vehicle master power can also be controlled from the driver's station.

• Vehicle master power and turret power will come on when TURRET POWER
switch (1) is set to ON or TUR pushbutton (2) is pressed on Upgraded Tank
Commander's Panel (UTCP) equipped tanks.

0094-1
 TM 9-2350-264-10-1 0094

PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION

AND TURRET) - Continued

1. If only vehicle master power is needed, pull out, set, and hold VEHICLE MASTER POWER
switch (3) on commander's panel (4) to ON until VEHICLE MASTER POWER light (5) goes
on, then let go. On UTCP equipped tanks, press MST pushbutton (6) until green light (7)
is lit on UTCP (8). If light (5 or 7) does not come on, do Troubleshooting (Vol 2, WP 0350).

WARNING
With Commander's Weapon Station (CWS) POWER/MANUAL lever (9) in
POWER position when turret power is turned on, CWS can move and could
injure personnel. Make sure all crewmembers are clear of CWS area. Do not
place CWS POWER/MANUAL lever (9) in MANUAL position unless necessary
for operation. When in MANUAL position, CWS may traverse freely, causing
injury to crewmembers or damage to equipment.

2. Make sure CWS POWER/MANUAL lever (9) is in MANUAL position.

0094-2
 TM 9-2350-264-10-1 0094

PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION

AND TURRET) - Continued

WARNING
Do not run auxiliary hydraulic pump when the engine is running and the
HYDRAULIC SYSTEM MALFUNCTION light (10) is lit. Operation with a dam-
aged main hydraulic system may result in complete system failure and an
engine compartment fire.

3. If turret power is going to be used, set and hold TURRET POWER switch (1) to ON until
VEHICLE MASTER POWER light (5), TURRET POWER light (11), and AUX HYDR
POWER light (12) come on. On UTCP equipped tanks, press TUR pushbutton (2) until MST
light (7), TUR light (13), and AUX HYD light (14) come on.

4. Move CWS POWER/MANUAL lever (9) to the POWER position.

5. Make sure ENGINE FIRE (15), CKT BKR OPEN (16), FIRE CONTROL MALFUNCTION
(17), and LOW BAT CHG (18) warning lights are out. On UTCP equipped tanks, make sure
ENG FIRE (19), CB OPEN (20), FC MALF (21), and LOW BAT (22) warning lights are out. If
lit, do Troubleshooting (Vol 2, WP 0350).

0094-3
 TM 9-2350-264-10-1 0094

PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION

AND TURRET) - Continued

6. On Redesigned Turret Network Box (RTNB) equipped tanks, make sure ALERT light (23) is
not lit and RTNB DIAG light (24) is not flashing. If ALERT light (23) is lit and DIAG light (24)
is flashing, do Troubleshooting (Vol 2, WP 0350).

7. Make sure CWS ARMED light(s) (25, and if equipped, 26) is not lit.

0094-4
 TM 9-2350-264-10-1 0094

PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION

AND TURRET) - Continued

NOTE
PANEL LIGHTS TEST pushbutton (27) and knob (28) on commander's panel
(4) control lights on loader's panel (29) and commander's alert panel (30). On
UTCP equipped tanks, PNL LGHTS TEST pushbutton (31) and arrow pushbut-
tons (32) control lights on loader's panel (29) and commander's alert panel (30).
PNL LGTS TEST pushbutton (31) activates Nuclear, Biological, and Chemical
(NBC) audible tone alert through vehicle intercom system.

8. Press PANEL LIGHTS TEST pushbutton (27) on commander's panel (4) or PNL LGTS
TEST pushbutton (31) on UTCP (8) and make sure that all lights on panel (4 or 8), load-
er's panel (29), commander's alert panel (30), and CWS ARMED light(s) (25, and if
equipped, 26), illuminate. If not, replace bad lamps (Vol 3, WP 0375), or do Troubleshoot-
ing, (Vol 2, WP 0350). On UTCP equipped tanks, if NBC audible tone alert is not heard
on vehicle intercom system when PNL LGTS TEST pushbutton (31) is pressed, make sure
intercom system is operating properly (Vol 2, WP 0257). If NBC audible tone alert still
cannot be heard, notify field maintenance.

0094-5
 TM 9-2350-264-10-1 0094

PREPARE STATION FOR OPERATION (POWER UP COMMANDER'S STATION

AND TURRET) - Continued

WARNING
Do not set Tank Commander's Panel (TCP) or UTCP lamps to full dim position.
Warning lights will not illuminate at full dim which could result in injury to per-
sonnel or damage to equipment.

9. Adjust brightness of panel (4 or 8), loader's panel (29), and commander's alert panel (30)
lights by watching VEHICLE MASTER POWER light (5) or MST pushbutton light (7) while
turning knob (28) clockwise to brighten and counterclockwise to dim, or pressing arrow keys
(32) up and down.

10. If equipped with Force XXI Battle Command Brigade and Below (FBCB2), and FBCB2 is
going to be used, power up EIS+ (WP 0102).

END OF TASK

END OF WORK PACKAGE

0094-6
PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED
COMMANDER'S WEAPON STATION (SCWS)) - Continued
TM 9-2350-264-10-1 0094.1

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED
COMMANDER'S WEAPON STATION (SCWS))

INITIAL SETUP:
Personnel Required References (continued)
Two WP 0114
Vol 2, WP 0269
References
WP 0112.1 Vol 2, WP 0351
WP 0113.1 Vol 3, WP 0375

WARNING
• SCWS is powered when vehicle master power is turned on, and could move
suddenly resulting in injury to personnel. Make sure all crewmembers are
clear of SCWS area during power up. Ensure that the SCWS Manual Azi-
muth Drive Assembly (MADA) (1) is locked in manual (forward) position
prior to turning on turret power (WP 0113.1). Failure to ensure MADA (1) is
locked in manual (forward) position may result in the SCWS moving sud-
denly, causing injury to crewmembers or damage to equipment.

• Do not place the Power Azimuth Drive Assembly (PADA) (2) into manual
position if the SCWS MADA (1) is in the power position, or vice versa,
unless absolutely necessary, and only after safety precautions have been
taken. The SCWS is able to traverse freely whenever the MADA (1) is in
power mode with the PADA (2) in manual mode simultaneously, and may
then cause injury to crewmembers or damage to equipment.

CAUTION

• Ensure EAPU OUTPUT POWER switch is set to OFF to prevent electrical

system lock-up (Vol 2, WP 0269).

• Do not attempt to elevate or depress SCWS in power mode if a weapon is

not mounted in the cradle. Elevating and depressing SCWS in power mode
without the weight of a weapon to balance out the equilibrator will result in
damage to the motor on the elevation drive assembly.

NOTE
• Vehicle master power can also be controlled from the driver's station.

• The commander is responsible for knowing operation of other crew sta-

tions, with special attention to any warnings or cautions that apply.

0094.1-1 Change 3
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

NOTE
• Vehicle master power and turret power will come on when TUR pushbutton
(3) is pressed on Upgraded Tank Commander's Panel (UTCP) (4).

• When TUR pushbutton (3) on UTCP (4) is turned on, Computer Control
Panel (CCP) (5) will not power up.
1. Make sure MADA (1) is locked in manual (forward) position (WP 0113.1).

Change 3 0094.1-2
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

2. If only vehicle master power is needed, press MST pushbutton (6) until green light (7) is lit
on UTCP (4). If green light (7) does not come on, do Troubleshooting (Vol 2, WP 0351).

WARNING
Do not run auxiliary hydraulic pump when the engine is running and the hydrau-
lic system malfunction light (8) is lit. Operation with a damaged main hydraulic
system may result in complete system failure and an engine compartment fire.
Death or injury may occur.

3. On UTCP (4), press TUR pushbutton (3) until MST light (7), TUR light (9), and AUX HYD
light (10) come on. Make sure ENG FIRE (11), CB OPEN (12), FC MALF (13), and LOW
BAT (14) warning lights are not lit. If lit, do Troubleshooting (Vol 2, WP 0351).

0094.1-3 Change 3
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

4. On Redesigned Turret Network Box (RTNB) (15), make sure ALERT light (16) is not lit and
RTNB DIAG light (17) is not flashing. If ALERT light (16) is lit and RTNB DIAG light (17) is
flashing, do Troubleshooting (Vol 2, WP 0351).

NOTE
On UTCP (4), PNL LGT TEST pushbutton (18) and arrow pushbuttons (19)
control lights on loader's panel (20) and Commander's Alert Panel (CAP) (21).
PNL LGT TEST pushbutton (18) activates Nuclear, Biological, and Chemical
(NBC) audible tone alert thru vehicle intercom system.

5. Press TEST pushbutton (18) on UTCP (4), and make sure that all lights on UTCP (4), load-
er's panel (20), and CAP (21) illuminate. If not, replace bad lamps (Vol 3, WP 0375), or do
Troubleshooting (Vol 2, WP 0351). On UTCP (4), if NBC audible tone alert is not heard
on vehicle intercom system when TEST pushbutton (18) is pressed, make sure intercom
system is operating properly. If NBC audible tone alert still cannot be heard, notify field
maintenance.

Change 3 0094.1-4
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

WARNING
Do not set UTCP lamps to full dim position. Warning lights will not illuminate at
full dim which could result in injury to personnel or damage to equipment.

6. Adjust brightness of UTCP (4), loader's panel (20), and CAP (21) lights by watching MST
pushbutton light (7) while pressing arrow pushbuttons (19) up and down.

7. Power up Remote Thermal Sight (WP 0114).

0094.1-5 Change 3
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

8. Close ballistic windows (22) by pressing down on latch (23) and swinging ballistic window to
closed position (24).

WARNING

• SCWS is powered when vehicle master power is turned on, and could move
suddenly, resulting in injury to personnel. Make sure all crewmembers are
clear of SCWS area during power up. Ensure that SCWS Manual Azimuth
Drive Assembly (MADA) (1) is locked in manual (forward) position prior to
turning on turret power (WP 0113.1). Failure to ensure MADA (1) is locked
in manual (forward) position may result in the SCWS moving suddenly,
causing injury to crewmembers or damage to equipment.

• Do not place MADA (1) and Power Azimuth Drive Assembly Select Lever
(PADASL) (25) in manual position simultaneously unless necessary for
operation. When MADA (1) and PADASL (25) are in manual simultaneously,
the SCWS is able to traverse freely, and doing so may cause injury to crew-
members, or damage to equipment.

Change 3 0094.1-6
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

9. Move PADASL (25) to the power (right) position.

10. Place MADA (1) in power mode by pulling back on the Manual Azimuth Mode Select Lever
(MAMSL) (26), and pulling MADA (1) rearward until it reaches mechanical stop. Release
MAMSL (26) and allow detent to seat.

0094.1-7 Change 3
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

11. If Elevation Mode Select Lever (EMSL) (27) is in MANUAL (28), move EMSL (27) up to
POWER (29) (WP 0112.1).

Change 3 0094.1-8
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

12. Make sure ARMED indicator light (30) on SAFE/ARM Module (SAM) (31) is not lit. If lamp is
lit, move SAFE/ARM switch (32) to SAFE (down) position. ARMED indicator light (30)
should go out.

13. Rotate the PANEL LIGHTS brightness adjust knob (33) clockwise to brighten, and counter-
clockwise to dim indicator lights on SAM (31).

14. Press PUSH TO TEST pushbutton (34). Observe and verify that all panel lights (30, 35) are
lit. If not, replace defective lamps (Vol 3, WP 0375), or do Troubleshooting (Vol 2,
WP 0351).

0094.1-9 Change 3
 TM 9-2350-264-10-1 0094.1

PREPARE STATION FOR OPERATION (POWER UP TURRET AND STABILIZED

COMMANDER'S WEAPON STATION (SCWS)) - Continued

15. Position SCWS Control Handle Assembly (SCHA) (36) on either internal mounting bracket
(37) or external mounting bracket (38).

END OF TASK

END OF WORK PACKAGE

Change 3 0094.1-10
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S
SEAT) - Continued
TM 9-2350-264-10-1 0095

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S SEAT)

INITIAL SETUP:
Not Applicable

WARNING
Do not put full weight on seat (1). If seat adjusting spring is weak, seat (1) will
drop suddenly and injure commander.

NOTE
• The commander's seat (1) should be at a height to permit use of command-
er's weapon sight (2), Gunner's Primary Sight (GPS) extension (3), and unity
periscope (4) with the least amount of head movement.

• Seat height adjustment knob (5) is located on post under right edge of
seat (1).

1. While sitting on commander's seat (1), pull out and hold knob (5) to release spring latch.

2. Raise seat (1) by slowly removing body weight. Let knob (5) go when seat (1) is raised to
desired height. Seat (1) will lock in position.

3. Lower seat (1) by sitting on seat and pulling out and holding knob (5). Let knob (5) go when
desired height is reached. Seat (1) will lock in position.

0095-1
 TM 9-2350-264-10-1 0095

PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S

SEAT) - Continued

4. Adjust seat (1) height to place eyes in line with commander's weapon sight (2) while in sit-
ting position.

5. Move your head to check view in the GPS extension (3) and unity periscope (4). Command-
er's weapon mount front and rear sights should be visible through front unity periscope (4).

6. Readjust seat (1) if necessary.

NOTE
Footrest bar (6) is for commander's comfort when sitting in seat (1). When not
being used, leave in down position.

7. Move footrest bar (6) on bottom of platform (7) into position.

END OF TASK

END OF WORK PACKAGE

0095-2
PREPARE STATION FOR OPERATION (OPERATE COMMANDER'S
HATCH) - Continued
TM 9-2350-264-10-1 0096

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (OPERATE COMMANDER'S HATCH)

INITIAL SETUP:
Not Applicable

WARNING
• The commander's hatch (1) must be locked in one of three positions when
tank is in motion. Failure to check that hatch (1) is locked in selected posi-
tion may result in head or back injury to commander.

• Do not operate commander's hatch (1) while vehicle is moving except in

case of emergency. If you must operate while vehicle is moving, use
extreme care. Commander's hatch (1) is heavy and can injure you.

NOTE
• The commander's hatch (1) has three positions: closed, protected open, and
full open.

• The commander's hatch (1) can only be operated from inside the turret.

1. To raise hatch (1) to protected open position, do the following:

a. Grasp the hatch operating handle (2).

b. Squeeze down on the spring loaded lever (3) on top of operating handle (2) and unlock
the hatch (1) by turning handle (2) counterclockwise.

0096-1
 TM 9-2350-264-10-1 0096

PREPARE STATION FOR OPERATION (OPERATE COMMANDER'S

HATCH) - Continued

WARNING
The commander's hatch yoke assembly (4) can pivot when opening hatch (1)
and cause possible injury to operator. Place one hand near front of hatch (1)
and one near the rear to prevent hatch (1) from pivoting on yoke assembly (4)
and possibly striking you.

c. Push up on rear portion of hatch (1) until it locks in the protected open position, and
T-handle (5) is locked.

2. To raise hatch (1) to full open position from the protected open position, do the following:

a. Place one hand in center of hatch (1).

b. Grasp the locking lever (6) with other hand.

c. Pull the locking lever (6) towards you and push up on hatch (1) until hatch (1) pivots up
to the full open position and locks in place.

d. Pull hatch (1) at top edge to make sure that T-handle (5) is locked.

3. To lower hatch (1) to protected open from full open position, do the following:

a. Place one hand in center of hatch (1) and grasp locking lever (6) with other hand.

b. Push up slightly on hatch (1) while pulling locking lever (6) towards you to unlock the
hatch (1).

c. When hatch (1) unlocks and begins to close, release locking lever (6) and guide hatch
(1) down. Hatch (1) will lock in the protected open position.

d. Push up and pull down on hatch operating handle (2) to make sure hatch (1) is locked
in protected open position.

0096-2
 TM 9-2350-264-10-1 0096

PREPARE STATION FOR OPERATION (OPERATE COMMANDER'S

HATCH) - Continued

4. To close hatch (1) do the following:

a. Grasp and hold operating handle (2) with right hand.

b. Pull locking lever (6) towards you with left hand until hatch lock releases.

c. Pull down on operating handle (2) with both hands to bring hatch (1) to closed position.

d. When nose of hatch (1) bumps front of hatch opening, grasp the T-handle (5) with right
hand and pull towards the center of the hatch (1).

e. Continue to pull hatch (1) down using left hand on operating handle (2) and right hand
on T-handle (5).

f. Squeeze down on spring loaded lever (3) of operating handle (2) and lock hatch (1) by
turning handle (2) clockwise.

END OF TASK

END OF WORK PACKAGE

0096-3/4 blank
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S
PLATFORMS) - Continued
TM 9-2350-264-10-1 0097

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S PLATFORMS)

INITIAL SETUP:
References
WP 0096

NOTE
Both platforms (1, 2) are adjusted for height at the same time with one platform
height control knob (3). When commander steps to lower platform (1), seat pan
(4) will flip up 90°.

1. Open hatch to protected open position (WP 0096).

2. Stand on turret floor (5).

3. Pull out and hold platform height control knob (3).

4. Move lower platform (1) by hand to desired height and let go of control knob (3).

NOTE
Commander should be able to see through top of forward unity periscope (6)
and be able to see in a complete circle over other unity periscopes.

5. Stand on lower platform (1) and look through unity periscopes (6).

6. Readjust lower platform (1) if necessary.

7. Open commander's hatch to full open position (WP 0096).

8. Press upper platform (2) down with toe of your boot.

0097-1
 TM 9-2350-264-10-1 0097

PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S

PLATFORMS) - Continued

NOTE
Commander should be able to see in a complete circle over top of peri-
scope (6).

9. Stand on upper platform (2).

NOTE
• Do not stand on seat back (7) if not folded down.

• You should be able to see over the commander's weapon when standing on
seat back (7).

10. Push down commander's seat pan (4) and back (7). Stand on folded down seat back (7).

END OF TASK

END OF WORK PACKAGE

0097-2
PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S
WEAPON) - Continued
TM 9-2350-264-10-1 0098

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S WEAPON)

INITIAL SETUP:
Tools and Special Tools References (continued)
Handle, socket wrench, 3/4-in. drive WP 0117
(Vol 3, WP 0499, Item 40) Vol 2, WP 0321
Socket, socket wrench, 30 mm (Vol 3, Vol 2, WP 0350
WP 0499, Item 78)
Wrench, adjustable (Vol 3, WP 0499, TM 9-1005-213-10
Item 86)
References
WP 0096

WARNING

• Make sure machinegun is clear (WP 0117) and ARMED light (1) on SAFE/
ARMED switch (2) is not lit. Machinegun can fire, if loaded, and kill some-
one.

• Remember to always set manual safety (3) on machinegun (4) to SAFE

position until ready to fire (TM 9-1005-213-10). Accidental firing of weapons
can kill or seriously injure personnel.

• Ensure M10 charging handle (5) on machinegun is properly stowed prior to

operating SCWS. Failure to properly stow M10 charging handle (5) may
result in an unintentional discharge of weapon that may kill or seriously
injure personnel.

NOTE
To install M240 machinegun in commander's machinegun mount, see (Vol 2,
WP 0321).

0098-1 Change 4
 TM 9-2350-264-10-1 0098

PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S

WEAPON) - Continued

1. Open commander's hatch to full open position (WP 0096).

2. Pull front (flat) mounting pin (6) and rear (round) mounting pin (7) from mount (8).

3. Put machinegun receiver (9) in mount (8).

4. Make sure machinegun butterfly trigger (10) is under roller (11). Line up front (12) and rear
(13) receiver mounting holes with mounting holes (14, 15), and insert mounting pins (6, 7).

5. Check that roller (11) is just resting on butterfly trigger (10). If not, loosen hex screw (16)
with adjustable wrench. Adjust roller (11) up or down until it just rests on butterfly trigger
(10). Tighten hexagon screw (16).

6. Install barrel (17), set headspace and timing (TM 9-1005-213-10).

Change 4 0098-2
 TM 9-2350-264-10-1 0098

PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S

WEAPON) - Continued

NOTE
If equilibrator adjustment is correct, commander's weapon will elevate and
depress smoothly, with equal effort.

7. Elevate and depress commander's weapon to make sure equilibrator (18) is properly
adjusted.

8. If adjustment is correct, go to step 16.

9. Depress weapon to maximum depression.

0098-3 Change 4
 TM 9-2350-264-10-1 0098

PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S

WEAPON) - Continued

NOTE
Locking lever (19) is shown positioned for M2 .50 caliber.

10. Make sure locking lever (19) is positioned for .50 caliber operation.

11. Using adjustable wrench, 30 mm socket, and handle, unlock and move equilibrator locknut
(20) halfway out on equilibrator adjusting bolt (21).

NOTE
If adjusting bolt (21) is too tight, weapon will not lower completely. If bolt (21) is
too loose, equilibrator (18) will be loose at maximum elevation and may not pro-
vide accurate fire.

12. Using adjustable wrench, 30 mm socket, and handle, turn equilibrator adjusting bolt (21)
clockwise or counterclockwise until weapon can be elevated and depressed smoothly with
equal effort. If equilibrator (18) cannot be adjusted, notify field maintenance.

13. Using adjustable wrench, 30 mm socket, and handle, turn locknut (20) clockwise until lock-
nut (20) is fully seated against mount (8).

14. Set machinegun safety (22) to the left until F can be seen.

Change 4 0098-4
 TM 9-2350-264-10-1 0098

PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S

WEAPON) - Continued

CAUTION
To prevent fraying or breaking of charging cable (23), do not allow cable (23) to
drag over any surface.

15. Pull charging handle (5) down and to the rear to charge machinegun, then let go.

WARNING
Spring clip (24) must be present in charging handle stowage tube (25) in order
to hold M10 charging handle (5) in place while operating SCWS. If spring clip
(24) is not installed in charging handle stowage tube (25), or spring clip (24) is
not holding M10 charging handle (5) in place while operating SCWS the M10
charging handle (5) will not remain in stowed position. An unintended discharge
of machinegun may occur resulting in serious injury or death to personnel.

16. Stow M10 charging handle (5) by doing the following:

a. Ensure spring clip (24) is present in charging handle stowage tube (25). If not, notify
field maintenance.

b. Insert M10 charging handle (5) fully into charging handle stowage tube (25) until inner
radius of M10 charging handle (5) comes into contact, but does not move forward the
machinegun triggering mechanism (26).

c. Ensure M10 charging handle (5) is held in place by spring clip (24). If M10 charging
handle (5) is not held in place by spring clip (24), notify field maintenance.

17. Set SAFE/ARMED switch (2) to ARMED (right) position, then let go.

18. Make sure red ARMED light (1) is lit. If not, notify field maintenance.

0098-5 Change 4
 TM 9-2350-264-10-1 0098

PREPARE STATION FOR OPERATION (INSTALL COMMANDER'S

WEAPON) - Continued

19. Grasp handle (27) with left hand and press button (28) on top of handle (27) to test
machinegun firing mechanism. You should hear a click. If not, press down on butterfly trig-
ger (10). If machinegun does not click, do Troubleshooting (Vol 2, WP 0350). If machinegun
still does not click, notify field maintenance.

20. Set SAFE/ARMED switch (2) to SAFE (left) position then let go.

21. Make sure red ARMED light (1) is not lit.

22. Set machinegun safety (22) so that S can be seen.

END OF TASK

END OF WORK PACKAGE

Change 4 0098-6
PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR
OPERATION (INSTALL COMMANDER'S WEAPON) - Continued
TM 9-2350-264-10-1 0098.1

OPERATOR MAINTENANCE
PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR
OPERATION (INSTALL COMMANDER'S WEAPON)

INITIAL SETUP:
Tools and Special Tools References (continued)
Handle, socket wrench, 3/4-in. drive x WP 0096
18-in. long (Vol 3, WP 0499, Item 40) WP 0117
Socket, socket wrench, 30 mm, 3/4-in. Vol 2, WP 0321.1
drive (Vol 3, WP 0499, Item 78)
Wrench, adjustable (Vol 3, WP 0499, Vol 2, WP 0351
Item 86) TM 9-1005-213-10

References
WP 0094.1

PREPARE SCWS FOR WEAPON INSTALLATION

WARNING
• Make sure machinegun (1) is clear (WP 0117) and ARMED indicator light
(2) on SAFE/ARM MODULE (SAM) (3) is not lit. If loaded, machinegun (1)
can fire and kill someone.

• Remember to always set manual safety on machinegun to SAFE (S) posi-

tion (4) until ready to fire, refer to TM 9-1005-213-10. Accidental firing of
weapons can kill or seriously injure personnel.

• If POWER/MANUAL Elevation Mode Selector Lever (EMSL) (5) is moved to

manual position, and the machinegun mount (6) is depressed without a
machinegun mounted, the machinegun mount (6) will move up rapidly, and
may cause serious injury to personnel.

• Ensure M10 charging handle (6.1) on machinegun is properly stowed prior

to operating the SCWS. Failure to properly stow the M10 charging handle
(6.1) may result in an unintentional discharge of the weapon that may kill or
seriously injure personnel.

NOTE
• To install M240 machinegun in SCWS machinegun mount (6), refer to Pre-
pare Stabilized Commander's Weapon Station (SCWS) For Alternate
Weapon (Install M240 Machinegun) (Vol 2, WP 0321.1).

• When the POWER/MANUAL EMSL (5) is in POWER position, the SCWS

machinegun mount (6) is locked in position and will only move by powered
operation.

1. Open commander's hatch to full open position (WP 0096).

0098.1-1 Change 3
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

PREPARE SCWS FOR WEAPON INSTALLATION - Continued

CAUTION
Do not attempt to elevate or depress SCWS in power mode if a weapon is not
mounted in the cradle. Elevating and depressing SCWS in power mode without
the weight of a weapon to balance out the equilibrator will result in damage to
the motor on the elevation drive assembly.
2. From the stowed position, move machinegun mount (6) down into the horizontal position.

Change 3 0098.1-2
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

PREPARE SCWS FOR WEAPON INSTALLATION - Continued

a. Stand on right side of machinegun mount (6), in front of commander's hatch, facing
toward the loader's hatch.
b. With your left hand, move the EMSL (5) from POWER position (7) to MANUAL position
(8). Ensure EMSL (5) locks into MANUAL position (8).

c. With your right hand on the equilibrator (9), and left hand on EMSL housing (10), push
down on the equilibrator (9) until machinegun mount (6) is horizontal.

d. While holding machinegun mount (6), move the EMSL (5) from the MANUAL position
(8) to the POWER position (7), ensuring the EMSL (5) locks into position.
END OF TASK

0098.1-3 Change 3
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

INSTALL COMMANDER'S WEAPON

1. Pull front (11) and rear (12) mounting pins from the machinegun mount (6).
2. Place machinegun receiver (13) in machinegun mount (6).
3. Make sure machinegun trigger (14) is under roller (15).

4. Line up front (16) and rear (17) receiver mounting holes with mounting holes (18, 19) on
machinegun mount (6), and insert mounting pins (11, 12).
5. Take up clearance in the front and rear mounting pins by turning Anti-Backlash Clamp
(ABC) adjustment knobs, at the front (20) and rear (21), clockwise until tight.

6. Check that roller (15) is just resting on machinegun's trigger (14). If not, loosen hex screw
(22) with adjustable wrench and adjust roller (15) up or down until it just rests on machine-
gun's trigger (14). Tighten hex screw (22).

Change 3 0098.1-4
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

INSTALL COMMANDER'S WEAPON - Continued

7. Check tension on Manual Elevation Trigger Assembly (META) trigger cable (23). If the ten-
sion is taut, continue to step 8. If tension is loose, perform the following steps:

a. Loosen trigger cable lock screw (24) on trigger block (25).

b. Pull trigger cable (23) thru groove in trigger block (25) until trigger cable (23) is taut.
c. Hold trigger cable (23) taut and tighten trigger cable lock screw (24). Go to step 8.

WARNING
The spring clip (25.1) must be present in the charging handle stowage tube
(25.2) in order to hold the M10 charging handle (6.1) in place while operating
the SCWS. If the spring clip (25.1) is not installed in the charging handle stow-
age tube (25.2), or the spring clip (25.1) is not holding the M10 charging handle
(6.1) in place while operating the SCWS, the M10 charging handle (6.1) will not
remain in the stowed position, and an unintended discharge of the machinegun
may occur resulting in serious injury or death to personnel.

8. Stow M10 charging handle (6.1) by doing the following:

a. Ensure spring clip (25.1) is present in charging handle stowage tube (25.2). If not,
notify field maintenance.
b. Insert M10 charging handle (6.1) fully into charging handle stowage tube (25.2) until
the inner radius of the M10 charging handle (6.1) comes into contact, but does not
move forward, the machinegun triggering mechanism (25.3).

0098.1-5 Change 3
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

INSTALL COMMANDER'S WEAPON - Continued

c. Ensure M10 charging handle (6.1) is held in place by the spring clip (25.1). If M10
charging handle (6.1) is not held in place by the spring clip (25.1), notify field mainte-
nance.

9. Move the EMSL (5) from POWER position (7) to MANUAL position (8).

Change 3 0098.1-6
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

INSTALL COMMANDER'S WEAPON - Continued

10. Unlock the Manual Elevation Control Handle (MECH) (26) by moving the Manual Elevation
Control Handle Lock (MECHL) (27) to the unlocked position.

11. Manually elevate and depress machinegun to make sure the M10 charging handle (6.1)
does not interfere with the elevation/depression sweep of the weapon and contact the for-
ward unity periscope (27.1).

a. If M10 charging handle (6.1) clears the forward unity periscope (27.1), go to step 12.

b. If M10 charging handle (6.1) does not clear the forward unity periscope (27.1), attempt
to adjust the META trigger cable (23) once more, then reposition the M10 charging
handle (6.1). Repeat step 11 after readjusting the META trigger cable (23).

(1) If adjusting the META trigger cable a second time enables the M10 charging
handle (6.1) to sweep clear of the forward unity periscope (27.1), go to step 12.

0098.1-7 Change 3
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

INSTALL COMMANDER'S WEAPON - Continued

(2) If adjusting the tension on the META trigger cable a second time does not result in
the M10 charging handle (6.1) sweeping clear of the forward unity periscope
(27.1), notify field maintenance.

NOTE
If equilibrator adjusting bolt (28) is too tight, machinegun will not lower com-
pletely. If bolt (28) is too loose, equilibrator (9) will be loose at maximum eleva-
tion, and may not provide accurate fire.

12. Elevate and depress machinegun to make sure equilibrator (9) is properly adjusted.

a. If equilibrator adjustment is correct, machinegun will elevate and depress smoothly

with equal effort. If movement of machinegun mount is smooth and balanced, PER-
FORM SCWS FIRE CONTROL SYSTEM CHECK.

NOTE
Locking lever (29) is shown positioned for M2 .50 caliber.

b. If movement of machinegun mount (6) is not smooth and balanced, perform the follow-
ing steps:

(1) Manually depress machinegun to maximum depression.

Change 3 0098.1-8
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

INSTALL COMMANDER'S WEAPON - Continued

(2) Make sure locking lever (29) on equilibrator (9) is positioned for .50 caliber opera-
tion.

(3) Using adjustable wrench and 30 mm socket and handle, unlock and move equili-
brator locknut (30) halfway out on equilibrator adjusting bolt (28).

(4) Using 30 mm socket and handle, turn equilibrator adjust bolt (28) clockwise or
counterclockwise until machinegun can be elevated and depressed smoothly
with equal effort. If equilibrator (9) cannot be adjusted, notify field maintenance.

(5) Using adjustable wrench and 30 mm socket and handle, turn equilibrator locknut
(30) clockwise until locknut (30) is fully seated against machinegun
mount (6).
END OF TASK

0098.1-9 Change 3
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

PERFORM SCWS FIRE CONTROL SYSTEM CHECK

CAUTION
To prevent fraying or breaking of charging cable (31), do not allow cable (31) to
drag over any surface.

1. Place machinegun on FIRE (F), refer to TM 9-1005-213-10.

2. Charge the machinegun, refer to TM 9-1005-213-10.

3. Stow M10 charging handle (6.1).

4. Power up turret and SCWS (WP 0094.1).

Change 3 0098.1-10
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

PERFORM SCWS FIRE CONTROL SYSTEM CHECK - Continued

5. Set SAFE/ARM switch (32) on SAM (3) to ARMED (up) position, then release switch.
ARMED indicator light (2) on SAM (3) should be lit. If ARMED indicator light (2) is not lit,
perform lamp test (WP 0094.1), and replace lamp if burned out. Notify field maintenance if
replacing the lamp does not correct the problem.

6. Grasp palm switch (33) on SCWS Control Handle Assembly (SCHA) (34) and squeeze trig-
ger (35). Machinegun should fire (listen for clicking of firing pin).

0098.1-11 Change 3
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

PERFORM SCWS FIRE CONTROL SYSTEM CHECK - Continued

a. If machinegun fires, go to step 7.

b. If machinegun fails to fire, perform Troubleshooting (Vol 2, WP 0351), and attempt to

fire again. If machinegun fails to fire a second time, notify field maintenance.

7. Charge the machinegun, refer to TM 9-1005-213-10.

8. Stow M10 charging handle (6.1).

9. Grasp MECH (26), lift trigger guard (36) and depress trigger (37).

Change 3 0098.1-12
 TM 9-2350-264-10-1 0098.1

PREPARE STABILIZED COMMANDER'S WEAPON STATION (SCWS) FOR

OPERATION (INSTALL COMMANDER'S WEAPON) - Continued

PERFORM SCWS FIRE CONTROL SYSTEM CHECK - Continued

a. If machinegun fires, go to step 10.

b. If machinegun fails to fire, perform Troubleshooting (Vol 2, WP 0351), and attempt to

fire again. If machinegun fails to fire a second time, notify field maintenance.

10. Set SAFE/ARM switch (32) on SAM (3) to SAFE position, then release switch. ARMED indi-
cator light (2) on SAM (3) should not be lit. If ARMED indicator light (2) remains lit, notify
field maintenance.

11. Place machinegun on SAFE (S) position (4), refer to TM 9-1005-213-10.

END OF TASK

END OF WORK PACKAGE

0098.1-13/14 blank Change 3
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S KNEE
GUARD) - Continued
TM 9-2350-264-10-1 0099

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S KNEE GUARD)

INITIAL SETUP:
Not Applicable

WARNING
Do not hold knee guard (1) with hand when main gun is moving up or down. It
could injure hand if hand is caught between gun breech and knee guard (1).

1. Move commander's knee guard (1) from stowed position down towards main gun as far as
possible when main gun is to be fired.

2. Move knee guard (1) up and to the rear to stowed position when main gun is not being fired.

END OF TASK

END OF WORK PACKAGE

0099-1/2 blank
PREPARE STATION FOR OPERATION (PERFORM ENHANCED POSITION
LOCATION REPORTING SYSTEM (EPLRS) CHECKOUT) - Continued
TM 9-2350-264-10-1 0100

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (PERFORM ENHANCED POSITION
LOCATION REPORTING SYSTEM (EPLRS) CHECKOUT)

INITIAL SETUP:
References References (continued)
WP 0094 TM 11-5825-283-10
Vol 2, WP 0350

NOTE
• Turret power must be on to operate EPLRS (WP 0094).

• When operating EPLRS without engine running, check LOW BAT CHG light
(1) on Tank Commander's Panel (TCP) (2) or LOW BAT light (3) on
Upgraded Tank Commander's Panel (UTCP) (4) (if equipped) every 10 to 15
minutes. If light (1 or 3) comes on, do Troubleshooting (Vol 2, WP 0350).

1. Check antenna cable 1W326-9 (5) and connector (6) for damage and proper connection to
J2 (7) on receiver/transmitter (EPLRS) (8).

2. Check power cable (9) and connector (10) for damage and proper connection to jack (11)
on selectable power adapter (12).

3. Check connector (13) and extension cable (14) for damage and proper connection to jack
(15) on EPLRS receiver/transmitter (8).

4. Check connector (16) for damage and proper connection to receptacle (17) on User Read-
out (URO) mounting bracket (18).

0100-1
 TM 9-2350-264-10-1 0100

PREPARE STATION FOR OPERATION (PERFORM ENHANCED POSITION LOCA-

TION REPORTING SYSTEM (EPLRS) CHECKOUT) - Continued

5. Check cable (19) and connector (20) for damage and proper connection to receptacle (21)
on URO (22). Hang cable (19) on hook (23) in turret roof. Make sure URO (22) is secure in
mount.

6. Check antenna (24) for damage and proper mounting to base (25).

WARNING
During operation, do not allow cables to entangle gunner or commander, to
avoid injury. Do not extend URO (22) outside tank during cross-country travel.

7. Do basic user unit power on, see TM 11-5825-283-10.

END OF TASK

END OF WORK PACKAGE

0100-2
PREPARE STATION FOR OPERATION (PERFORM POSITION LOCATION
REPORTING SYSTEM (PLRS) CHECKOUT) - Continued
TM 9-2350-264-10-1 0101

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (PERFORM POSITION LOCATION
REPORTING SYSTEM (PLRS) CHECKOUT)

INITIAL SETUP:
References References (continued)
WP 0094 TM 11-5825-283-10
Vol 2, WP 0350

NOTE
• Turret power must be on to operate PLRS (WP 0094).

• When operating PLRS without engine running, check LOW BAT CHG light
(1) on Tank Commander Panel (TCP) (2) or LOW BAT light (3) on Upgraded
Tank Commander's Panel (UTCP) (4), if equipped, every 10 to 15 minutes.
If LOW BAT CHG light (1) or LOW BAT light (3) comes on, do Troubleshoot-
ing (Vol 2, WP 0350).

1. Check antenna cable 1W326-9 (5) and connector (6) for damage and proper connection to
jack (7) on Basic User Unit (BUU) (8).

2. Check power cable (9) and connector (10) for damage and proper connection to jack (11)
on selectable power adapter (12).

3. Check connector (13) and extension cable (14) for damage and proper connection to jack
(15) on BUU (8).

4. Check connector (16) for damage and proper connection to receptacle (17) on bracket (18).

0101-1
 TM 9-2350-264-10-1 0101

PREPARE STATION FOR OPERATION (PERFORM POSITION LOCATION

REPORTING SYSTEM (PLRS) CHECKOUT) - Continued

5. Check cable (19), connector (20), and adapter (21) for damage and proper connection to
receptacle (22) on User Readout (URO) (23). Hang cable (19) on hook (24) in turret roof.
Make sure URO (23) is secure in mount.

6. Check antenna (25) for damage and proper mounting to base (26).

WARNING
During operation, do not allow cables to entangle gunner or commander, to
avoid injury. Do not extend URO (23) outside tank during cross-country travel.

7. Do basic user unit power on, see TM 11-5825-283-10.

END OF TASK
END OF WORK PACKAGE
0101-2
OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (START UP FORCE
XXI BATTLE COMMAND BRIGADE AND BELOW (FBCB2)) - Continued
TM 9-2350-264-10-1 0102

OPERATOR MAINTENANCE
OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (START UP FORCE
XXI BATTLE COMMAND BRIGADE AND BELOW (FBCB2))

INITIAL SETUP:
References References (continued)
WP 0094 TM 11-5820-1172-13&P
Vol 2, WP 0225 TM 11-5825-291-13
Vol 2, WP 0226 TM 11-7010-326-10
Vol 2, WP 0254
Vol 2, WP 0255 TM 11-7010-554-10

NOTE
Basic start up of FBCB2 in the M1A1 tank is covered here. For detailed infor-
mation see TM 11-7010-326-10, if equipped with Computer Set, Digital
AN/UYK-128 (V) or TM 11-7010-554-10, if equipped with Computer Set, Digital
AN/UYK-128D (V)3.

1. Power up commander's station (WP 0094).

2. Install Global Positioning System (GPS) Receiver, do the following:

a. If equipped with AN/PSN-11 Precision Light Weight GPS Receiver (PLGR) (1), go to
(Vol 2, WP 0254).

b. If equipped with AN/PSN-13 Defense Advanced GPS Receiver (DAGR) (2), go to

(Vol 2, WP 0255).

3. Turn on Turret Networks Box (TNB) (Vol 2, WP 0225) or Redesigned Turret Networks Box
(RTNB) (if equipped) (Vol 2, WP 0226) utility outlet.

NOTE
EIS+ and GPS antennas must have unobstructed view of satellite(s).

0102-1 Change 4
 TM 9-2350-264-10-1 0102

OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (START UP FORCE

XXI BATTLE COMMAND BRIGADE AND BELOW (FBCB2)) - Continued

4. Power up PLGR (1) TM 11-5825-291-13, or if equipped, power up DAGR (2)

TM 11-5820-1172-13&P.

5. Install FBCB2 hard drive In Accordance With (IAW) TM 11-7010-326-10 with Computer Set,
Digital AN/UYK-128 (V) (3) or IAW TM 11-7010-554-10 if equipped with Computer Set,
Digital AN/UYK-128D (V) 3 (4).

6. Power up Computer Processor Unit (CPU) IAW TM 11-7010-326-10 with Computer Set,
Digital AN/UYK-128 (V) (3) or IAW TM 11-7010-554-10 if equipped with Computer Set,
Digital AN/UYK-128D (V) 3 (4).

Change 4 0102-2
 TM 9-2350-264-10-1 0102

OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (START UP FORCE

XXI BATTLE COMMAND BRIGADE AND BELOW (FBCB2)) - Continued

7. Press and hold PWR button (5) on Display Unit (DU) (6) until green power light (7) comes
on and do the following:

a. If equipped with AN/UYK-128 (V), refer to TM 11-7010-326-10 for operating instruc-

tions.

b. If equipped with AN/UYK-128D (V), refer to TM 11-7010-554-10 for operating instruc-

tions.

END OF TASK

END OF WORK PACKAGE

0102-3/4 blank Change 4
OPERATE DIGITAL COMPUTER SET DISPLAY TILT BRACKET - Continued

TM 9-2350-264-10-1 0103

OPERATOR MAINTENANCE
OPERATE DIGITAL COMPUTER SET DISPLAY TILT BRACKET

INITIAL SETUP:
Not Applicable

NOTE
Digital computer display may be set in either a vertical or tilted position. Com-
mander may tilt display for ease of viewing while standing or sitting.

1. To tilt digital computer display (1), squeeze tilt bracket handle (2) and pull tilt bracket (3) until
display (1) is locked in tilted position.

2. To place display (1) in vertical position, squeeze tilt bracket handle (2) and push tilt bracket
(3) until display (1) is locked in vertical position.

END OF TASK

END OF WORK PACKAGE

0103-1/2 blank
 OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (SHUT DOWN
FORCE XXI BATTLE BRIGADE COMMAND AND BELOW (FBCB2)) - Continued
TM 9-2350-264-10-1 0104

OPERATOR MAINTENANCE
OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (SHUT DOWN
FORCE XXI BATTLE BRIGADE COMMAND AND BELOW (FBCB2))

INITIAL SETUP:
References References (continued)
WP 0124 TM 11-7010-326-10
Vol 2, WP 0254 TM 11-7010-554-10
Vol 2, WP 0255

CAUTION
Do not power down tank with FBCB2 running. FBCB2 software may get cor-
rupted and FBCB2 will not power up again.

NOTE
Basic shut down of FBCB2 in the tank is covered here. For detailed operation
of FBCB2 see TM 11-7010-326-10, if equipped with Computer Set, Digital
AN/UYK-128 (V) (1) or TM 11-7010-554-10, if equipped with Computer Set,
Digital AN/UYK-128D (V)3 (2).

1. Log out of FBCB2 and power down EIS+ and do the following:

a. If equipped with Computer Set, Digital AN/UYK-128 (V) (1) see TM 11-7010-326-10.

b. If equipped with Computer Set, Digital AN/UYK-128D (V)3 (2) see TM 11-7010-554-10.

2. If not required for further operations, shut down GPS Receiver by doing the following:

a. If equipped with AN/PSN-11 Precision Lightweight GPS Receiver (PLGR) (3) see
(Vol 2, WP 0254).

0104-1 Change 4
 TM 9-2350-264-10-1 0104

OPERATE ENHANCED INFORMATION SYSTEM PLUS (EIS+) (SHUT DOWN

FORCE XXI BATTLE BRIGADE COMMAND AND BELOW (FBCB2)) - Continued

b. If equipped with AN/PSN-13 Defense Advanced GPS Receiver (DAGR) (4) see (Vol 2,
WP 0255).

3. If not required for further operations, power down tank (WP 0124) or continue mission.
END OF TASK

END OF WORK PACKAGE

Change 4 0104-2
PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK
(DHI) FUNCTIONAL CHECK) - Continued
TM 9-2350-264-10-1 0105

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK
(DHI) FUNCTIONAL CHECK)

INITIAL SETUP:
Personnel Required References (continued)
Three WP 0094
Vol 2, WP 0145
References
Vol 2, WP 0194
WP 0051

NOTE
DRIVER'S HATCH OPEN indicator light (1) on Commander's Alert Panel (CAP)
(2) will illuminate to alert the commander that the driver's hatch is opened and
the Gun Turret Drive (GTD) is inhibited.

1. Notify crewmembers that GTD is being activated.

WARNING
Do not perform this task without first determining that driver is safely out of the
way of any gun/turret movements. Driver could be injured or killed if turret or
gun is moved and driver is not safely out of the way of any gun/turret move-
ments.

2. Perform DHI system checkout.

a. Make sure that gun and turret are locked (Vol 2, WP 0145) and (Vol 2, WP 0194).

b. Have driver close driver's hatch.

c. Turn on vehicle MASTER POWER (WP 0094).

0105-1
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

d. Verify that DRIVER'S HATCH OPEN indicator light (1) and GUN/TURRET DRIVE
INHIBIT FAULT indicator light (3) on CAP (2) are not on.

e. Have driver verify that G/T DRIVE INHIBIT FAULT indicator light (4) on Driver's Instru-
ment Panel (DIP) (5) and G/T DRIVE ACTIVE HATCH OPEN indicator light (6) on Driv-
er's Alert Panel (DAP) (7) are not on.

f. Have driver open driver's hatch.

g. Verify that DRIVER'S HATCH OPEN indicator light (1) and GUN/TURRET DRIVE
INHIBIT FAULT indicator light (3) on CAP (2) remain off.

h. Have driver verify that G/T DRIVE INHIBIT FAULT indicator light (4) on DIP (5) and G/T
DRIVE ACTIVE HATCH OPEN indicator light (6) on DAP (7) remain off.

i. Have driver close driver's hatch.

j. Turn on TURRET POWER (WP 0094).

k. Verify that DRIVER'S HATCH OPEN indicator light (1) and GUN/TURRET DRIVE
INHIBIT FAULT indicator light (3) on CAP (2) are not illuminated.

l. Have driver verify that G/T DRIVE INHIBIT FAULT indicator light (4) on DIP (5) and G/T
DRIVE ACTIVE HATCH OPEN indicator light (6) on DAP (7) are not illuminated.

3. Perform turret PANEL LIGHTS test from Tank Commander's Panel (TCP) (8) or PNL LGTS
test from Upgraded Tank Commander's Panel (UTCP) (9) (WP 0094).

4. Make sure all lights on TCP (8) or UTCP (9) and CAP (2) are on.

5. Have loader make sure all lights on loader's panel (10) are on.

6. Turn PANEL LIGHTS knob (11) clockwise on TCP (8) or press up arrow (12) on UTCP (9)
and verify light intensity increases on TCP (8) and UTCP (9) and CAP (2).

7. Have loader verify light intensity increases on loader's panel (10).

0105-2
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

WARNING
Do not set TCP or UTCP lamps to full dim position. Warning lights will not illu-
minate at full dim position and could result in injury to personnel or damage to
equipment.

8. Turn PANEL LIGHTS knob (11) counterclockwise on TCP (8) or press down arrow (12) on
UTCP (9) and verify brightness decreases on TCP (8) and UTCP (9) and CAP (2).

9. Have loader verify brightness decreases on loader's panel (10).

10. Have driver perform hull panel lights test from Driver's Master Panel (DMP) (13) (WP 0051).

11. Have driver make sure all lights on DMP (13), DIP (5), and DAP (7) are on.

0105-3
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

12. Have driver verify brightness increases for all lights on DMP (13) and DIP (5), but not on
DAP (7).

13. Have driver turn PANEL LIGHTS knob (14) on DMP (13) CCW and verify all lights on DIP
(5) and DMP (13) decrease in brightness but do not go out completely. Have driver verify
that lights on DAP (7) do not decrease in brightness.

14. To adjust brightness on DAP lights (15), have driver do the following:

a. Press PANEL DIM pushbutton (16) on DAP (7).

b. Turn PANEL LIGHTS knob (14) on DMP (13) CW and CCW.

15. Have driver verify that brightness of DAP (7), DMP (13), and DIP (5) lights are adjustable.

16. With turret power ON, perform driver's hatch open light test.

a. Have driver open driver's hatch and verify DRIVER'S HATCH OPEN light (1) illuminates
on CAP (2).

b. Have driver close driver's hatch and verify DRIVER'S HATCH OPEN light (1) on CAP
(2) goes off.

17. With driver's hatch closed, perform commander's override switch lockout test.

a. Make sure gun and turret are locked (Vol 2, WP 0145) and (Vol 2, WP 0194).

b. Move OPEN HATCH OVERRIDE switch (17) on CAP (2) to ON position.

c. Verify OPEN HATCH OVERRIDE switch (17) does not latch in ON position.

d. Repeat steps 17b and 17c with commander's palm switch (18) on commander's handle
(19) depressed.

e. Verify OPEN HATCH OVERRIDE switch (17) does not latch in ON position.

0105-4
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

f. Repeat steps 17a through 17e having gunner use the Gunner's Control Handles
(GCH) (20).

18. Perform DHI hydraulic inhibit test.

a. Depress commander's palm switch (18) and have driver open hatch.

b. Verify turret hydraulic power valves shut off. Hydraulic noise should be audible.

c. Verify DRIVER'S HATCH OPEN light (1) on CAP (2) is illuminated.

d. Release commander's palm switch (18) and then depress commander's palm switch
(18) again.

e. Make sure hydraulic power valves do not come on.

0105-5
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

f. Repeat steps 18a through 18e having gunner use the GCH (20).

19. Perform commander's override test.

a. Move commander's OPEN HATCH OVERRIDE switch (17) on CAP (2) to ON position.

b. Verify OPEN HATCH OVERRIDE switch (17) does not latch in ON position.

c. Have gunner depress palm switch (21) on GCH (20) and move OPEN HATCH OVER-
RIDE switch (17) on CAP (2) to ON position.

d. Verify OPEN HATCH OVERRIDE switch (17) does not latch in ON position.

e. Depress commander's palm switch (18) and move OPEN HATCH OVERRIDE switch
(17) on CAP (2) to ON position.

f. Verify override is active.

(1) Verify G/T DRIVE ACTIVE HATCH OPEN light (6) on DAP (7) illuminates.

(2) Verify DRIVER'S HATCH OPEN light (1) on CAP (2) remains on.

(3) Verify turret hydraulic power valves are on.

0105-6
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

g. Release commander's palm switch (18).

h. Verify turret hydraulic power valves shut OFF.

i. Verify G/T DRIVE ACTIVE HATCH OPEN light (6) on DAP (7) goes OFF.

j. Depress commander's palm switch (18) and move OPEN HATCH OVERRIDE switch
(17) on CAP (2) to ON position.

k. Verify override is active.

l. With commander's palm switch (18) depressed, have gunner move FIRE CONTROL
MODE switch (22) at gunner's station to MANUAL.

m. Verify override is no longer active.

(1) Verify turret hydraulic power valves shut off.

(2) Verify G/T DRIVE ACTIVE HATCH OPEN light (6) on DAP (7) goes OFF.

n. Release commander's palm switch (18).

20. With driver's hatch open, perform override hands-off test.

a. Have gunner move FIRE CONTROL MODE switch (22) at gunner's station to POWER.

b. Move OPEN HATCH OVERRIDE switch (17) on CAP (2) to ON position.

c. Verify OPEN HATCH OVERRIDE switch (17) does not latch in ON position.

0105-7
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

d. Have gunner depress palm switch (21) on GCH (20) and move OPEN HATCH OVER-
RIDE switch (17) on CAP (2) to ON position.

e. Verify OPEN HATCH OVERRIDE switch (17) on CAP (2) does not latch in ON position.

f. Have gunner release palm switch (21).

g. Depress commander's palm switch (18) and move OPEN HATCH OVERRIDE switch
(17) on CAP (2) to ON position.

h. Verify override is active.

0105-8
 TM 9-2350-264-10-1 0105

PREPARE STATION FOR OPERATION (PERFORM DRIVER'S HATCH INTERLOCK

(DHI) FUNCTIONAL CHECK) - Continued

i. With commander's palm switch (18) depressed to maintain override, have gunner
depress palm switch (21) on GCH (20).

j. Release commander's palm switch (18) and verify override condition is active with only
gunner's palm switch (21) depressed.

k. Have gunner release palm switch (21) and verify override is no longer active.

l. Have gunner depress palm switch (21) again and verify hydraulic power valves do not
engage.

END OF TASK

END OF WORK PACKAGE

0105-9/10 blank
PREPARE STATION FOR OPERATION (OVERRIDE DRIVER'S HATCH INTERLOCK
(DHI)) - Continued
TM 9-2350-264-10-1 0106

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (OVERRIDE DRIVER'S HATCH INTERLOCK
(DHI))

INITIAL SETUP:
References References (continued)
WP 0094 WP 0124

1. Turn on turret power (WP 0094).

NOTE
DRIVER'S HATCH OPEN indicator light (1) on Commander's Alert Panel (CAP)
(2) will illuminate to alert the commander that the driver's hatch is opened and
the Gun/Turret Drive (GTD) is inhibited.

2. Notify crewmembers that GTD is being activated.

WARNING
Do not override inhibit without first notifying driver and determining that driver is
safely out of the way of any gun/turret movements. Driver could be injured or
killed if turret or gun is moved and driver is not safely out of the way of any gun/
turret movements.

3. Make sure that driver is safely out of the way of any gun/turret movements.

4. Depress and hold palm switch (3) on commander's handle (4).

5. Move OPEN HATCH OVERRIDE switch (5) on CAP (2) to ON position.

0106-1
 TM 9-2350-264-10-1 0106

PREPARE STATION FOR OPERATION (OVERRIDE DRIVER'S HATCH INTERLOCK

(DHI)) - Continued

6. The G/T DRIVE ACTIVE HATCH OPEN indicator light (6) on Driver's Alert Panel (DAP) (7)
will illuminate.

7. To cancel override, release palm switch (3) on commander's handle (4).

8. The G/T DRIVE ACTIVE HATCH OPEN indicator light (6) on DAP (7) will go OFF.

9. To transfer control of GTD to gunner, do the following:

a. Depress and hold palm switch (3) on commander's handle (4).

b. Move OPEN HATCH OVERRIDE switch (5) on CAP (2) to ON position.

c. Have gunner depress and hold palm switches (8) on Gunner's Control Handle
(GCH) (9).

d. Release palm switch (3) on commander's handle (4).

e. Turn off vehicle master power (WP 0124).

END OF TASK

END OF WORK PACKAGE

0106-2
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S GUNNER'S
PRIMARY SIGHT (GPS) EXTENSION) - Continued
TM 9-2350-264-10-1 0107

OPERATOR MAINTENANCE
PREPARE STATION FOR OPERATION (ADJUST COMMANDER'S GUNNER'S
PRIMARY SIGHT (GPS) EXTENSION)

INITIAL SETUP:
References
Vol 2, WP 0146

NOTE
The GPS extension (1) at the commander's station is primarily controlled from
the gunner's station. Control of magnification, selection of day or night sight, fil-
ters, laser range, and thermal image are not available to commander.

1. Open GPS ballistic doors (Vol 2, WP 0146).

2. Adjust browpad as follows:

a. Grasp thumbscrew (2) and pull back to loosen browpad (3).

NOTE
No part of your face or eye should be in contact with sight body or optics.

b. Slide browpad (3) in or out to desired position.

c. Grasp thumbscrew (2) and push forward to tighten browpad (3) securely in position.

d. Bend ends of browpad (3) to fit the contour of your CVC helmet.

e. Turn diopter ring (4) to focus GPS extension (1) eyepiece on daylight reticle pattern.

END OF TASK

END OF WORK PACKAGE

0107-1/2 blank
OPERATE FIRE EXTINGUISHERS (OPERATE EXTERNAL FIRE EXTINGUISHER
T-HANDLE) - Continued
TM 9-2350-264-10-1 0108

OPERATOR MAINTENANCE
OPERATE FIRE EXTINGUISHERS (OPERATE EXTERNAL FIRE EXTINGUISHER
T-HANDLE)

INITIAL SETUP:
Tools and Special Tools References
Wrench, impact, electric, kit (Vol 3, Vol 3, WP 0421
WP 0499, Item 87)

NOTE
• This procedure is for engine fires when crew is not in the tank, or when 2ND
SHOT switch on the driver's instrument panel does not set off 2nd shot fire
extinguisher bottle.

• ENGINE-FIRE T-handle (1) does not automatically shut down engine.

1. Order crew to exit tank.

2. Pull out and set VEHICLE MASTER POWER switch (2) to OFF, then let go. On Upgraded
Tank Commander's Panel (UTCP) (3) equipped tanks, press MST pushbutton (4) until light
goes off.

0108-1
 TM 9-2350-264-10-1 0108

OPERATE FIRE EXTINGUISHERS (OPERATE EXTERNAL FIRE EXTINGUISHER

T-HANDLE) - Continued

WARNING
Explosive elements in 120 mm ammunition are very sensitive to high tempera-
tures. Heat and flames from engine compartment fire could cause ammunition
stowed in the ready and stowage ammunition compartment to explode if the
gun tube is over the front of the tank.

3. If safe, after crew has exited tank, manually traverse turret so gun is over either side of
tank.

4. Exit tank.

5. Take wrench from external turret stowage box to the right of the commander's station.

6. Locate ENGINE-FIRE T-handle (1) just above left side number 5 skirt panel.

7. Pull ENGINE-FIRE T-handle (1) hard to set off 2nd shot bottle.

8. If equipped and safe to do so, disconnect negative emergency disconnect link (Vol 3,
WP 0421).

END OF TASK

END OF WORK PACKAGE

0108-2
OPERATE COMMANDER'S MANUAL RANGE CONTROLS - Continued

TM 9-2350-264-10-1 0109

OPERATOR MAINTENANCE
OPERATE COMMANDER'S MANUAL RANGE CONTROLS

INITIAL SETUP:
References
WP 0094

1. Power up commander's station and turret (WP 0094).

2. Set indexed battle ranges into computer.

3. Press MANUAL RANGE BATTLE SGT pushbutton (1) on Tank Commander's Panel (TCP)
(2), or press BTL SITE pushbutton (3) on Upgraded Tank Commander's Panel (UTCP) (4)
equipped tanks, to automatically feed a manually indexed battle range (5) into fire con-
trol system.

NOTE
The battlesight range (5) displayed will be for ammunition selected and/or type
of weapon selected on Gunner's Primary Sight (GPS).

4. To make range changes to manually indexed range (5) using ADD-DROP switch (6) or
pushbuttons (7), do the following:

0109-1
 TM 9-2350-264-10-1 0109

OPERATE COMMANDER'S MANUAL RANGE CONTROLS - Continued

NOTE
The range (5) showing on GPS and commander's GPS extension will be chang-
ing in 10 m steps.

a. For small adjustments to range (5), move switch (6) to ADD or DROP, or press either
ADD or DROP pushbuttons (7) to make range changes at a speed of 50 m (54 yd) per
second.

b. For large adjustments to range (5), move switch (6) to ADD or DROP, or press either
ADD or DROP pushbuttons (7), and hold for more than 4 seconds to make range
changes at a speed of 500 m (546 yd) per second.

c. To return to the original range (5) indexed, press the MANUAL RANGE BATTLE SGT
pushbutton (1) or BTL SITE pushbutton (3).

END OF TASK

END OF WORK PACKAGE

0109-2
 OPERATE COMMANDER'S HANDLE - Continued

TM 9-2350-264-10-1 0110

OPERATOR MAINTENANCE
OPERATE COMMANDER'S HANDLE

INITIAL SETUP:
References References (continued)
WP 0088 Vol 2, WP 0154
WP 0094 Vol 2, WP 0162
WP 0105 Vol 2, WP 0192
Vol 2, WP 0134
Vol 2, WP 0145 Vol 2, WP 0194

NOTE
The Driver's Hatch Interlock (DHI) inhibits operation of Gun/Turret Drive (GTD)
system when the driver's hatch is open. If driver's hatch is open, have driver
close hatch (WP 0088) or override DHI inhibit (WP 0105).

1. Power up commander's station and turret (WP 0094).

2. Unlock turret lock (Vol 2, WP 0194).

3. Unlock gun travel lock (Vol 2, WP 0145).

4. Set GUN/TURRET DRIVE switch on loader's panel to POWERED (Vol 2, WP 0192).

5. Set FIRE CONTROL MODE switch on Gunner's Primary Sight (GPS) upper panel to NOR-
MAL or EMERGENCY (Vol 2, WP 0134).

WARNING
Before depressing palm switch, alert crew by announcing "POWER" and make
sure all personnel are clear of turret, breech, and main gun. Crewmembers can
be injured or killed if turret is traversed while body parts are extended between
turret and hull or if main gun is moved while body parts are near breech or gun
tube.

NOTE
• Squeezing palm switch (1) on commander's handle (2) removes control of
turret from gunner's handles and gives control to the commander. This action
also starts the stabilization system if GPS FIRE CONTROL MODE switch is
in NORMAL.

• Palm switch (1) on commander's handle (2) must be squeezed for the
handle (2), button (3), and trigger (4) to operate.

• Have driver run engine in tactical idle when slewing turret.

6. Grasp commander's handle (2) with right hand and squeeze palm switch (1).

0110-1
 TM 9-2350-264-10-1 0110

OPERATE COMMANDER'S HANDLE - Continued

NOTE
• The further left or right you move commander's handle (2), the faster the tur-
ret traverses.

• When traversing turret in normal mode to lay main gun on a target with a
high tracking rate, gunner's GPS or Thermal Imaging System (TIS) reticle
may overshoot target before gunner can start tracking. Commander should
anticipate turret deceleration time and start slowing turret rate before target
comes into gunner's sight.

7. Move commander's handle (2) left to traverse turret left and right to traverse turret right.

CAUTION

Make sure coaxial machinegun cover assembly is closed before operating com-
mander's handle (2). Cover assembly could be damaged if left open when main
gun is depressed.

NOTE
The further forward or backward you move commander's handle (2) the faster
the main gun and coaxial machinegun will elevate or depress.

8. Move commander's handle (2) forward to depress main gun or coaxial machinegun, or pull
back on commander's handle (2) to elevate weapons.

0110-2
 TM 9-2350-264-10-1 0110

OPERATE COMMANDER'S HANDLE - Continued

WARNING
If Laser Rangefinder (LRF) is being used to identify target location and LRF
displays flashing 0000, target location will be identified as your own tank posi-
tion. Make sure target location is correct. If not, request for fire will be on your
own position.

NOTE
RANGE switch on Laser Rangefinder (LRF) panel of GPS must be set to ARM
1ST RTN or ARM LAST RTN (Vol 2, WP 0162).

9. Operate laser rangefinder by pressing pushbutton (3) on top of commander's handle (2).

NOTE
GUN SELECT switch on GPS lower panel must be set to either MAIN or COAX
(Vol 2, WP 0154) as needed.

10. Fire main gun or coaxial machinegun by squeezing trigger (4) on front of commander's
handle (2).

END OF TASK

END OF WORK PACKAGE

0110-3/4 blank
 OPERATE MAIN GUN (FIRE MAIN GUN) - Continued

TM 9-2350-264-10-1 0111

OPERATOR MAINTENANCE
OPERATE MAIN GUN (FIRE MAIN GUN)

INITIAL SETUP:
References References (continued)
Vol 2, WP 0163 Vol 2, WP 0164

PREPARE TO FIRE (VOL 2, WP 0163).

NOTE
Commander's handle (1) may be used to fire main gun. When firing main gun
from commander's station, use commander's Gunner's Primary Sight (GPS)
extension (2) for sighting on target.
END OF TASK

FIRE IN NORMAL MODE

NOTE
If main gun fails to fire, PERFORM FAILURE-TO-FIRE PROCEDURES (Vol 2,
WP 0164).

Follow procedures for gunner's normal mode firing (Vol 2, WP 0163), but use commander's
handle (1) and commander's GPS extension (2).

END OF TASK

0111-1
 TM 9-2350-264-10-1 0111

OPERATE MAIN GUN (FIRE MAIN GUN) - Continued

FIRE IN EMERGENCY MODE

1. Follow procedures for gunner's emergency mode firing (Vol 2, WP 0163), but use com-
mander's handle (1) and commander's GPS extension (2).

2. With the main Nuclear, Biological, and Chemical (NBC) system ON (fully operational) and
with the hatches in any configuration, unlimited firing with either the main gun or coaxial
machinegun is permitted.

3. With the main NBC system OFF and with the loader's or commander's hatches open or
popped, the following firing restrictions apply for any 24-hour period:

a. When firing only the main gun, unlimited firing is permitted.

b. When firing only the coaxial machinegun, a full complement of ready box ammunition
(about 3200 rounds) may be fired at a rate of no more than 200 rounds per 10 minutes.

c. When firing both main gun and coaxial machinegun, 50 main gun rounds and 2000
machinegun rounds may be fired at a rate of no more than five main gun rounds and
200 machinegun rounds per 30 minutes.

d. No firing is permitted with the hatches closed and the main NBC system not operating.
Under this condition, toxic fumes within the turret will quickly exceed allowable expo-
sure limits.
END OF TASK

END OF WORK PACKAGE

0111-2
OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN POWER
MODE) - Continued
TM 9-2350-264-10-1 0112

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN POWER
MODE)

INITIAL SETUP:
References References (continued)
WP 0094 Vol 2, WP 0214
WP 0115 Vol 2, WP 0217
WP 0117

1. Power up commander's station and turret (WP 0094).

WARNING
Make sure area around CWS is clear of crewmembers and loose equipment
before traversing. When traversing commander's weapon, be careful not to hit
loader's weapon, loader's hatch if open, or loader. Damage to equipment or
injury to loader could occur.

2. Move POWER/MANUAL lever (1) to POWER position. It may be necessary to move

traverse ring (2) to engage POWER position.

0112-1
 TM 9-2350-264-10-1 0112

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN POWER

MODE) - Continued

NOTE
• Bracket (3 or 4) is the normal stowage position for CWS power control
handle (5).

• Three bracket positions for mounting CWS power control handle (5) are as
follows:

• Bracket (3) for closed hatch operation

• Bracket (4 or 6) for open hatch operation

• To remove CWS power control handle (5), push in and turn handle (5) clock-
wise one-quarter turn and pull from bracket (3, 4, or 6).

• To mount CWS power control handle (5), push in and turn handle (5) coun-
terclockwise one-quarter turn on bracket (3, 4, or 6).

3. Grasp CWS power control handle (5) with right hand.

4. Look into CWS sight (7) or forward unity periscope (8), as required.

5. Traverse CWS by squeezing palm switch (9) on CWS power control handle (5) and pushing
thumb control (10) left to go left, or right to go right.

0112-2
 TM 9-2350-264-10-1 0112

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN POWER

MODE) - Continued

WARNING

• Button (11) on elevation crank handle (12) is used to fire commander's

weapon. Before operation, make sure ARMED light (13) is not lit to keep
from accidentally firing machinegun and injuring someone.

• Remember to always set manual safety to SAFE position until ready to fire.
Accidental firing of weapons can kill or seriously injure personnel.

6. Grasp CWS elevation crank handle (12) with left hand.

7. Elevate commander's weapon by pushing in and turning elevation crank handle (12) coun-
terclockwise to make corrections and pull down to lock in place.

8. Depress commander's weapon by pushing in and turning elevation crank handle (12) clock-
wise to make corrections and pull down to lock in place.

0112-3
 TM 9-2350-264-10-1 0112

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN POWER

MODE) - Continued

NOTE
• To load .50 cal machinegun (WP 0115).

• To load M240 machinegun (Vol 2, WP 0214).

9. Move butterfly trigger safety (14) until F can be seen.

10. Set SAFE/ARMED switch (15) to ARMED (right) position to arm commander's weapon then
let go.

11. Make sure red ARMED light (13) and, if equipped, (16) is lit. If not, notify field maintenance.

12. Grasp handle (12) with left hand and press button (11) to fire commander's weapon.
Release button (11) to stop firing.

13. Set SAFE/ARMED switch (15) to SAFE (left) position, then let go.

14. Make sure red ARMED light (13) and, if equipped, (16) is not lit.

15. Move butterfly trigger safety (14) until S can be seen.

NOTE
• To clear caliber .50 machinegun (WP 0117).

• To clear M240 machinegun (Vol 2, WP 0217).

END OF TASK

END OF WORK PACKAGE

0112-4
OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE
SCWS IN POWER MODE) - Continued
TM 9-2350-264-10-1 0112.1

OPERATOR MAINTENANCE
OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE
SCWS IN POWER MODE)

INITIAL SETUP:
References References (continued)
WP 0094 Vol 2, WP 0286
WP 0094.1 Vol 3, WP 0526.3
WP 0098.1 TM 9-1005-213-10
WP 0114
Vol 2, WP 0269

OPERATE SCWS IN NORMAL MODE

WARNING
• Ensure M10 charging handle (1) on machinegun is properly stowed prior to
operating the SCWS (WP 0098.1). Failure to properly stow the M10 charg-
ing handle (1) may result in an unintentional discharge of the weapon that
may kill or seriously injure personnel.

• Remember to always set manual safety on machinegun to SAFE position

until ready to fire (TM 9-1005-213-10). Unintentional firing of weapons can
kill or seriously injure personnel.

CAUTION

• Ensure EAPU OUTPUT POWER switch is set to OFF to prevent electrical

system lock-up (Vol 2, WP 0269).

• Do not attempt to elevate or depress SCWS in power mode if a weapon is

not mounted in the cradle. Elevating and depressing SCWS in power mode
without the weight of a weapon to balance out the equilibrator will result in
damage to the motor on the elevation drive assembly.

NOTE
• Prepare Station for Operation (Power Up Commander's Station and Turret)
(WP 0094) must be performed prior to powering up SCWS.

• Whenever operating SCWS in temperatures ranging from 0 ° F (-18 ° C) to

-25 ° F (-31.7 ° C), perform Operate Stabilized Commander's Weapon Sta-
tion (SCWS) in Extreme Cold (Warm Up SCWS) (Vol 2, WP 0286), in con-
junction with operating the SCWS in power mode.

0112.1-1 Change 3
 TM 9-2350-264-10-1 0112.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN POWER MODE) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

1. Power up SCWS (WP 0094.1), ensuring that Power Azimuth Drive Assembly Select Lever
(PADASL) (2), Manual Azimuth Drive Assembly (MADA) (3), and Elevation Mode Select
Lever (EMSL) (4) are in power mode (WP 0094.1).

2. Power Up Remote Thermal Sight (RTS) (WP 0114).

Change 3 0112.1-2
 TM 9-2350-264-10-1 0112.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN POWER MODE) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

3. Install commander's weapon in SCWS (WP 0098.1).

4. Move FIRE CONTROL MODE selector switch (5) on SAFE/ARM MODULE (SAM) (6) to
NORMAL (up/stabilized) position. Green NORMAL indicator lamp (7) will light.

0112.1-3 Change 3
 TM 9-2350-264-10-1 0112.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN POWER MODE) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

5. To elevate and traverse SCWS, do the following:

a. To move SCWS at the rate of 0.25 to 50 mils per second in elevation/depression, and
0.25 to 100 mils per second in azimuth, move TRACK/SLEW switch (8) on SCWS Con-
trol Handle Assembly (SCHA) (9) up into TRACK position.

b. To move SCWS at an accelerated rate of 900 mils per second in elevation/depression

and azimuth, move TRACK/SLEW switch (8) on SCHA (9) down into SLEW position.

c. Grasp palm switch (10) on SCHA (9).

d. Move TRACK/SLEW switch (8) on SCHA (9) up into TRACK position.

e. Move THUMB CONTROL switch (11) on SCHA (9) to the left to move SCWS in azi-
muth (AZ) counterclockwise.

f. Move THUMB CONTROL switch (11) on SCHA (9) to the right to move SCWS in azi-
muth (AZ) clockwise.

g. Move THUMB CONTROL switch (11) up to move commander's weapon down in eleva-
tion.

h. Move THUMB CONTROL switch (11) down to move commander's weapon up in eleva-
tion.

i. Set Display Control Module (DCM) (12) to 3X magnification (WP 0114).

Change 3 0112.1-4
 TM 9-2350-264-10-1 0112.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN POWER MODE) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

j. Null EL drift by pushing in and rotating EL drift knob (13) on SAM (6) clockwise or
counterclockwise until vertical movement of reticle stops.

k. Release the palm switch (10) on SCHA (9).

l. Perform weapon station inhibit functional check (Vol 3, WP 0526.3). If weapon fails
inhibit check, notify field maintenance.
END OF TASK

OPERATE SCWS IN EMERGENCY MODE

NOTE
• Whenever a loss of stabilization function is experienced, place the SCWS
into EMERGENCY mode.

• Whenever SCWS is operating in EMERGENCY mode, tracking is no longer

available, and SCWS will operate at the slew rate (10 - 900 mils per second)
only, regardless of the position of the TRACK/SLEW switch (8).

1. Set FIRE CONTROL MODE switch (5) on SAM (6) to EMERGENCY (down) position.
Ensure yellow EMERGENCY indicator light (14) is lit.

2. Power operation and control of the SCWS is the same as in normal mode, minus the sys-
tems stabilization capability.
END OF TASK

0112.1-5 Change 3
 TM 9-2350-264-10-1 0112.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN POWER MODE) - Continued

OPERATE COMBAT OVERRIDE

WARNING
Ensure traverse path of SCWS is clear prior to operating with combat override
activated. Failure to do so will result in serious injury or death to personnel, or
damage to equipment.

1. With SCWS in either normal or emergency mode of operation, grasp and hold palm switch
(10) on SCHA (9).

2. Press COMBAT OVERRIDE ON pushbutton (15). COMBAT OVERRIDE ACTIVE indicator

light (16) will come on, and as long as palm switch (10) on SCHA (9) is engaged, operator
will be able to traverse SCWS into inhibit zones.

3. To deactivate COMBAT OVERRIDE, release palm switch (10) on SCHA (9). COMBAT
OVERRIDE ACTIVE indicator light (16) will go out.
END OF TASK

END OF WORK PACKAGE

Change 3 0112.1-6
 OPERATE SLEW TO CUE (STC) - Continued

TM 9-2350-264-10-1 0112.2

OPERATOR MAINTENANCE
OPERATE SLEW TO CUE (STC)

INITIAL SETUP:
Personnel Required References (continued)
Three WP 0114
References Vol 2, WP 0134
WP 0043 Vol 2, WP 0142
WP 0088 Vol 2, WP 0192
WP 0094.1 (WP OACAOC4U001)
WP 0112.1

OPERATE SCWS IN NORMAL MODE

WARNING

• Before depressing palm switch on commander's handle, gunner's control

handle, or SCWS Control Handle Assembly (SCHA) alert crew by announc-
ing "POWER" and make sure all personnel are clear of turret, breech, and
main gun. Crewmembers can be injured or killed if turret is traversed while
body parts are extended between turret and hull or if main gun is moved
while body parts are near breech or gun tube.

• Make sure personnel are clear of weapon station and loader's hatch area.
Weapon station can hit personnel causing injury.

• During Stabilized Commander's Weapon Station (SCWS) operations, hands

should not be placed on front periscope. SCWS movements can result in
pinch or crush injuries to operator's hands or fingers.

• Ensure all crewmembers are clear of the SCWS whenever vehicle master
power is turned on. SCWS can move suddenly and injure personnel or dam-
age equipment.

CAUTION

• Ensure ballistic windows are in closed/protected position prior to operating

SCWS. Failure to do so will result in damage to equipment.

• Do not attempt to elevate or depress SCWS in power mode if a weapon is

not mounted in the cradle. Elevating and depressing SCWS in power mode
without the weight of a weapon to balance out the equilibrator will result in
damage to the motor on the elevation drive assembly.

NOTE
• The Driver's Hatch Interlock (DHI) inhibits operation of the Gun/Turret Drive
(GTD) system whenever the driver's hatch is open.

• Target designate is used to aline main gun and SCWS in azimuth and eleva-
tion with Remote Thermal Sight (RTS) reticle in the SCWS.

0112.2-1 Change 4
 TM 9-2350-264-10-1 0112.2

OPERATE SLEW TO CUE (STC) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

1. Power up commander's station and turret (WP 0094.1). If driver's hatch is open, have driver
close hatch (WP 0088).

2. Set GUN/TURRET DRIVE switch on loader's panel to POWERED (Vol 2, WP 0192).

3. Set FIRE CONTROL MODE switch on Gunner's Primary Sight (GPS) upper panel to NOR-
MAL (Vol 2, WP 0134).

4. Power up SCWS in normal mode (WP 0112.1).

5. Power up RTS (WP 0114). Set image to 2X magnification.

6. Verify STC alinement (WP OACAOC4U001).

NOTE
• Squeezing palm switch on commander's handle removes control of turret
from Gunner's Control Handles (GCH) and gives control to the commander.
This action also starts the stabilization system if GPS FIRE CONTROL
MODE switch is in NORMAL.

• Pressing STC pushbutton on SCHA removes control of turret from GCH,

and turret/gun will move to designated target line.

• The SCWS contains a fire and movement inhibit zone located between azi-
muth positions of 180° (± 2.5°) and 335° (± 2.5°) for all elevation positions.
Zero degree for SCWS is with the weapon alined parallel to the main gun.

• When the SAFE/ARM MODULE (SAM) is in normal mode or emergency

mode, and machine gun is traversed into the inhibit zone, power to the azi-
muth and elevation motors and SCWS firing circuits is disabled, inhibiting
the electrical firing of the weapon.

• STC is disabled whenever SAM is placed in emergency mode or if main gun

is placed in emergency mode.

Change 4 0112.2-2
 TM 9-2350-264-10-1 0112.2

OPERATE SLEW TO CUE (STC) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

7. Grasp palm switch (1) on SCHA (2).

8. Traverse SCWS onto target (3), ensuring boresight cross of RTS reticle (4) is alined on tar-
get to be engaged.

9. Direct gunner to grasp and hold palm switches (5) on GCH (6) (Vol 2, WP 0142).

WARNING
Before depressing STC Alinement pushbutton, alert crew by announcing
"POWER" and make sure all personnel are clear of turret, breech, and main
gun. Crewmembers can be injured or killed if turret is traversed while body
parts are extended between turret and hull, turret and SCWS, or if main gun is
moved while body parts are near breech or gun tube.

0112.2-3 Change 4
 TM 9-2350-264-10-1 0112.2

OPERATE SLEW TO CUE (STC) - Continued

OPERATE SCWS IN NORMAL MODE - Continued

10. Press and release STC pushbutton (7) on SCHA (2). Turret/main gun will come into aline-
ment with SCWS.

11. View target (8) through Gunner's Primary Sight Extension (GPSE) (9) (WP 0043). Verify
that GPS reticle (10) is alined on same target aiming point (11) as RTS reticle (4)
(WP 0114).

END OF TASK

END OF WORK PACKAGE

Change 4 0112.2-4
OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN MANUAL
MODE) - Continued
TM 9-2350-264-10-1 0113

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN MANUAL
MODE)

INITIAL SETUP:
References References (continued)
WP 0094 Vol 2, WP 0145
WP 0115 Vol 2, WP 0214
WP 0117 Vol 2, WP 0217

WARNING

• To avoid personal injury, keep hands clear of CWS traverse ring (1) when fir-
ing main gun below zero elevation. Breech will recoil close to traverse
ring (1).

• Make sure the area around CWS is clear of crewmembers and loose equip-
ment before traversing. When traversing commander's weapon, be careful
not to hit loader's weapon, loader's hatch if open, or loader. Damage to
equipment or injury to loader could occur.

• Do not place POWER/MANUAL lever (2) in MANUAL position, unless nec-

essary for operation. When in MANUAL position, commander's weapon sta-
tion may traverse freely, causing injury to crewmembers or damage to equip-
ment.

0113-1
 TM 9-2350-264-10-1 0113

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN MANUAL

MODE) - Continued

NOTE
Manual operation is provided as a backup if power mode fails.

1. Grasp manual traverse ring (1) with right hand.

2. Move POWER/MANUAL lever (2) to MANUAL position. It may be necessary to move

traverse ring (1) to engage MANUAL position.

WARNING
• Remember to always set manual safety to SAFE position until ready to fire.
Accidental firing of weapons can kill or seriously injure personnel.

• Button (3) on elevation crank handle (4) is used to fire commander's

weapon. Before operation, make sure ARMED light (5) and, if equipped, (6)
is not lit to keep from accidentally firing machinegun and injuring someone.

3. Grasp CWS elevation crank handle (4) with left hand.

4. Look into CWS sight (7) or forward unity periscope (8) as required.

0113-2
 TM 9-2350-264-10-1 0113

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN MANUAL

MODE) - Continued

NOTE
If manual traverse ring (1) slips when traversing CWS, turn tape adjusting knob
(9) clockwise until slipping stops.

5. Traverse CWS to the right by moving manual traverse ring (1) to the right.

6. Traverse CWS to the left by moving manual traverse ring (1) to the left.

7. Elevate commander's weapon by pushing up and turning elevation crank handle (4) coun-
terclockwise to make corrections and pull down to lock in place.

8. Depress commander's weapon by pushing up and turning elevation crank handle (4) clock-
wise to make corrections and pull down to lock in place.

NOTE
• To load caliber .50 machinegun (WP 0115).

• To load M240 machinegun (Vol 2, WP 0214).

9. Move butterfly trigger safety (10) until F can be seen.

0113-3
 TM 9-2350-264-10-1 0113

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN MANUAL

MODE) - Continued

10. Make sure gun travel lock is locked (Vol 2, WP 0145).

11. Power up commander's station and turret (WP 0094).

12. Set SAFE/ARMED switch (11) to ARMED (right) position to arm commander's weapon and
then let go.

13. Make sure red ARMED light (5) and, if equipped, (6) is lit. If not, notify field maintenance.

WARNING
Remember to always set manual safety to SAFE position until ready to fire.
Accidental firing of weapons can kill or seriously injure personnel.

14. Grasp elevation crank handle (4) with left hand and press button (3) to fire commander's
weapon. Release button (3) to stop firing.

0113-4
 TM 9-2350-264-10-1 0113

OPERATE COMMANDER'S WEAPON STATION (CWS) (OPERATE IN MANUAL

MODE) - Continued

15. Set SAFE/ARMED switch (11) to SAFE (left) position and then let go.

16. Make sure red ARMED light (5) and, if equipped, (6) is not lit.

17. Move butterfly trigger safety (10) until S can be seen.

NOTE
• To clear caliber .50 machinegun (WP 0117).

• To clear M240 machinegun (Vol 2, WP 0217).

END OF TASK

END OF WORK PACKAGE

0113-5/6 blank
OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE
SCWS IN MANUAL MODE) - Continued
TM 9-2350-264-10-1 0113.1

OPERATOR MAINTENANCE
OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE
SCWS IN MANUAL MODE)

INITIAL SETUP:
References References (continued)
WP 0098.1 WP 0117
WP 0116.1

WARNING

• Ensure M10 charging handle (1) on machinegun is properly stowed prior to

operating the SCWS (WP 0098.1). Failure to properly stow the M10 charg-
ing handle (1) may result in an unintentional discharge of the weapon that
may kill or seriously injure personnel.

• Whenever the Elevation Mode Select Lever (EMSL) (2) is in the POWER
position, the Power Elevation Drive (PED) is engaged with the Gun Trunnion
Sector Gear (GTSG). If the commander's weapon mount (3) is depressed
without a machinegun in the mount, and the EMSL (2) is moved to MANUAL
(down) position (4), the mount (3) will move up rapidly and may cause seri-
ous injury to personnel.

• Ensure Power Azimuth Drive Assembly Select Lever (PADASL) (5) is in

power (POW) position prior to moving Manual Azimuth Drive Assembly
(MADA) (6) into manual mode. Failure to do so will result in SCWS free
floating/traversing, and could result in serious injury to personnel.

• During SCWS operations, hands should not be placed in front of or on top

of the forward unity periscope (7). SCWS movements can result in pinch/
crush injuries to operator's hands or fingers.

CAUTION

Do not attempt to elevate or depress SCWS in power mode if a weapon is not

mounted in the cradle. Elevating and depressing SCWS in power mode without
the weight of a weapon to balance out the equilibrator will result in damage to
the motor on the elevation drive assembly.

0113.1-1 Change 3
 TM 9-2350-264-10-1 0113.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN MANUAL MODE) - Continued

1. Verify that PADASL (5) is in the POW position.

2. Engage MADA (6) with cupola race gear by performing the following steps:

a. Move Manual Azimuth Mode Selector Level (MAMSL) (8) forward. This will disengage
the detent holding the MADA (6) in the rearward position, and engage the power azi-
muth drive with the cupola race gear.

Change 3 0113.1-2
 TM 9-2350-264-10-1 0113.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN MANUAL MODE) - Continued

b. Continue pushing the MAMSL (8) forward until reaching mechanical stop. Release the
MAMSL (8), allowing the detent to engage with the cupola, and the MADA (6) gears to
engage with external race ring. Rotate the Manual Azimuth Drive Assembly Handle
(MADAH) (9) clockwise, or counterclockwise, to ensure the MADA (6) gears engage
with the external race ring.

3. Move PADASL (5) from POW to manual (MAN) position. SCWS can now be traversed
manually.

4. Move EMSL (2) into MANUAL (down) position. Ensure EMSL (2) locks into position.

0113.1-3 Change 3
 TM 9-2350-264-10-1 0113.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN MANUAL MODE) - Continued

5. Unlock Manual Elevation Control Handle Lock (MECHL) (10) from stowed (recessed) posi-
tion and move mechanism left to engage with Manual Elevation Control Handle
(MECH) (11).

NOTE
FIRE CONTROL MODULE indicator lights NORMAL (12), or EMERGENCY
(13), on the SAFE/ARM MODULE (SAM) (14) will remain lit depending upon
which mode the SCWS is in (normal or emergency), until the PADASL (5),
MADA (6), or the EMSL (2), have been placed in manual mode.

Change 3 0113.1-4
 TM 9-2350-264-10-1 0113.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN MANUAL MODE) - Continued

6. Check SAM (14) to ensure FIRE CONTROL MODE lights are not lit. If either green NOR-
MAL (12) or yellow EMERGENCY indicator light (13) is lit, notify field maintenance.

7. To traverse SCWS, pull knob (15) on MADAH (9) and rotate handle clockwise to traverse
SCWS to the right, and counterclockwise to traverse SCWS to the left.

8. To elevate commander's weapon, grasp MECH (11), and lift in an upward direction. To
depress the commander's weapon, move MECH (11) in a downward direction.

0113.1-5 Change 3
 TM 9-2350-264-10-1 0113.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (OPERATE

SCWS IN MANUAL MODE) - Continued

WARNING
Remember to always set manual safety (16) to SAFE position until ready to fire
(WP 0117). Accidental firing of weapons can kill or seriously injure personnel.

9. To fire commander's weapon, place weapon on Fire (F), (WP 0116.1), lift trigger guard (17)
on MECH (11), and depress trigger (18).

END OF TASK

END OF WORK PACKAGE

Change 3 0113.1-6
 OPERATE REMOTE THERMAL SYSTEM (RTS) - Continued

TM 9-2350-264-10-1 0114

OPERATOR MAINTENANCE
OPERATE REMOTE THERMAL SIGHT (RTS)

INITIAL SETUP:
References References (continued)
WP 0094 Vol 3, WP 0513.1
WP 0098 Vol 3, WP 0513.2
WP 0113 Vol 3, WP 0513.3
Vol 3, WP 0511
Vol 3, WP 0513 DA FORM 2404

PREPARE RTS FOR OPERATION

CAUTION
Do not attempt to elevate or depress SCWS in power mode if a weapon is not
mounted in the cradle. Elevating and depressing SCWS in power mode without
the weight of a weapon to balance out the equilibrator will result in damage to
the motor on the elevation drive assembly.

1. Install commander's weapon (1) in Commander's Weapon Station (CWS) (WP 0098).

2. Remove rubber cap (2) from Thermal Sight Module (TSM) (3).

3. Power up commander's station and turret (WP 0094).

4. Lay commander's weapon (1) on target at a range between 300 m (984 ft) and 500 m (1640
ft) from tank (WP 0113).
END OF TASK

0114-1 Change 3
 TM 9-2350-264-10-1 0114

OPERATE REMOTE THERMAL SIGHT (RTS) - Continued

POWER UP RTS

1. Rotate BRIGHTNESS knob (4) on Display Control Module (DCM) (5) fully clockwise.

2. Select and/or verify reticle for installed weapon.

a. If reticle displayed in DCM (5) matches weapon installed, go to step 3.

b. If reticle does not match weapon installed, toggle and hold 4-way position switch (6) to
left until menu options appear in DCM display (7).

c. Toggle 4-way position switch (6) up/down until arrow (8) points to WEAPON (9).

Change 3 0114-2
 TM 9-2350-264-10-1 0114

OPERATE REMOTE THERMAL SIGHT (RTS) - Continued

POWER UP RTS - Continued

d. Toggle 4-way position switch (6) to right to select correct reticle, .50 cal reticle (10) or
M240 reticle (11), for weapon installed in CWS (50 CAL or M240). Weapon selected
will be displayed followed by RTS exiting menu options and returning to operational dis-
play.

0114-3 Change 3
 TM 9-2350-264-10-1 0114

OPERATE REMOTE THERMAL SIGHT (RTS) - Continued

POWER UP RTS - Continued

3. Verify boresight data.

a. Toggle and hold 4-way position switch (6) to left until menu options appear in DCM dis-
play (7).

b. Toggle 4-way position switch (6) up/down until arrow (8) points to BORESIGHT (12).

c. Toggle 4-way position switch (6) to right to enter BORESIGHT mode (13).

d. Verify that boresight data on RTS for weapon matches data recorded on DA Form
2404. If not, boresight weapon:

(1) If onscreen data (14) matches last boresight recorded on DA Form 2404, proceed
to step e.

(2) If onscreen data (14) does not match data recorded from most recent boresight on
DA Form 2404, boresight RTS (Vol 3, WP 0511), (Vol 3, WP 0513) or (Vol 3,
WP 0513.1).

(3) If equipped with SCWS, refer to (Vol 3, WP 0513.1), (Vol 3, WP 0513.2) or (Vol 3,
WP 0513.3).

e. Toggle 4-way position switch (6) to the right to exit BORESIGHT window and return to
DCM main screen and weapon's reticle.

Change 3 0114-4
 TM 9-2350-264-10-1 0114

OPERATE REMOTE THERMAL SIGHT (RTS) - Continued

POWER UP RTS - Continued

4. To view Built-in Test (BIT) results, do the following:

a. Hold 4-way position switch (6) to left until menu options appear in DCM display (7).

b. Toggle 4-way position switch (6) up/down until arrow (8) points to BIT RESULTS (15).

c. Review BIT RESULTS screen (16) and record any error codes (17) displayed. Notify
field maintenance if error codes are displayed.

d. Toggle 4-way position switch (6) to left to exit BIT RESULTS screen (15) and return to
DCM main display (7).

5. Self positioning and auto E-Zoom options do not function.

END OF TASK

0114-5 Change 3
 TM 9-2350-264-10-1 0114

OPERATE REMOTE THERMAL SIGHT (RTS) - Continued

ADJUST DAY TV IMAGE

NOTE
The Day TV has a fixed focus lens. The focus control switch on display will not
work while in Day TV mode.

1. Rotate BRIGHTNESS knob (4) counterclockwise or clockwise until desired image intensity
is achieved.

2. Press ZOOM pushbutton (18) once to magnify image 2X magnification.

3. Press ZOOM pushbutton (18) again to increase magnification to 3X.

4. Press ZOOM pushbutton (18) again to return to normal image and zero magnification.

END OF TASK

Change 3 0114-6
 TM 9-2350-264-10-1 0114

OPERATE REMOTE THERMAL SIGHT (RTS) - Continued

ADJUST THERMAL IMAGE

1. Press VID SEL pushbutton (19) once to select thermal video image.

2. To adjust focus, do the following:

a. Move 4-way position switch (6) up to focus on images that are far.

b. Move 4-way position switch (6) down to focus on images that are near.

3. To adjust magnification, do the following:

a. Press ZOOM pushbutton (18) once to magnify image 2X magnification.

b. Press ZOOM pushbutton (18) again to increase magnification to 3X.

c. Press ZOOM pushbutton (18) again to return to normal image and zero magnification.

4. To adjust thermal image polarity, do the following:

a. Press POL pushbutton (20) and select either white hot or black hot images.

b. Press POL pushbutton (20) once again to return to previous polarity selection.

5. Rotate BRIGHTNESS knob (4) counterclockwise or clockwise for desired image brightness.
END OF TASK

POWER DOWN RTS

1. Rotate BRIGHTNESS knob (4) on DCM (5) counterclockwise to complete stop.

2. Place rubber cap (2) TSM (3).

END OF TASK
END OF WORK PACKAGE
0114-7/8 blank Change 3
OPERATE COMMANDER'S WEAPON (LOAD WEAPON) - Continued

TM 9-2350-264-10-1 0115

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON (LOAD WEAPON)

INITIAL SETUP:
References References (continued)
WP 0098 WP 0098.1

WARNING
Ensure M10 charging handle (1) on machinegun is properly stowed prior to
operating the SCWS Commander's Weapon Station (CWS) (WP 0098), or if
equipped, Stabilized Commander's Weapon Station (SCWS) (WP 0098.1).
Failure to properly stow the M10 charging handle (1) may result in an uninten-
tional discharge of the weapon that may kill or seriously injure personnel.

1. Install commander's weapon (WP 0098) or (WP 0098.1), if equipped with SCWS.

0115-1 Change 4
 TM 9-2350-264-10-1 0115

OPERATE COMMANDER'S WEAPON (LOAD WEAPON) - Continued

2. Open ammunition box (2) and set box (2) on tray (3) with open box lid (4) away from
weapon, and lip (5) on box (2) under lip (6) on tray (3).

3. Make sure bullet side (7) of top layer of ammunition points forward, and first round (8) of
ammunition in box (2) contains an empty double link (9). If not, remove ammunition from
box (2) and drop the single link (10) side in first.

4. Set butterfly trigger safety (11) to right until safe (S) can be seen.

5. Open receiver cover (12) by turning and lifting lever (13).

6. Insert ammunition belt in receiver assembly (14) with first round (8) just past holding
pawls (15).

7. Close receiver cover (12) and make sure it is latched.

Change 4 0115-2
 TM 9-2350-264-10-1 0115

OPERATE COMMANDER'S WEAPON (LOAD WEAPON) - Continued

8. Pull charging handle (1) down and all the way to the rear and then let it go forward. Do this
twice.

9. Stow charging handle (1) (WP 0098.1).

WARNING
• Make sure S on butterfly trigger safety (11) can be seen. If not, weapon will
fire if trigger (16) is depressed.

• Remember to always set manual safety to S position until ready to fire. Acci-
dental firing of weapons can kill or seriously injure personnel.

10. Clip ammunition box latch (17) over two feed chute catches (18) to secure ammunition
box (2).

END OF TASK

END OF WORK PACKAGE

0115-3/4 blank Change 4
OPERATE COMMANDER'S WEAPON (FIRE COMMANDER'S
WEAPON) - Continued
TM 9-2350-264-10-1 0116

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON (FIRE COMMANDER'S WEAPON)

INITIAL SETUP:
References References (continued)
WP 0098 WP 0117
WP 0112 WP 0118
WP 0113 Vol 2, WP 0350
WP 0115

WARNING

• If safe (S) is not exposed on butterfly trigger safety (1), commander's

weapon can be fired by pressing butterfly trigger (2) on backplate, or by
pushing button (3) on Commander's Weapon Station (CWS) elevation crank
handle assembly (4). Make sure ARMED light (5) and (6), if equipped, is not
lit at all times unless you want to fire weapon.

• Remember to always set manual safety to S position until ready to fire. Acci-
dental firing of weapons can kill or seriously injure personnel.

• Ensure M10 charging handle (7) on machinegun is properly stowed prior to

operating CWS (WP 0098). Failure to properly stow M10 charging handle (7)
may result in an unintentional discharge of weapon that may kill or seriously
injure personnel.

1. Install commander's weapon (WP 0098).

2. Load commander's weapon (WP 0115). Ensure M10 charging handle (7) is stowed
(WP 0098).

0116-1 Change 4
 TM 9-2350-264-10-1 0116

OPERATE COMMANDER'S WEAPON (FIRE COMMANDER'S

WEAPON) - Continued

3. Move butterfly trigger safety (1) until F can be seen.

WARNING
Gun will now fire if butterfly trigger (2) on backplate is pushed or if SAFE/
ARMED switch (8) was set to ARMED (right) position and button (3) is pressed.

4. Alert crew on intercom by announcing "Caliber .50."

5. Set SAFE/ARMED switch (8) to ARMED (right) position and then let go and make sure
ARMED light (5) and, if equipped, (6) is lit. If ARMED light (5) and, if equipped, (6) does
not light, notify field maintenance.

NOTE
• For manual operation of CWS (WP 0113).

• For power operation of CWS (WP 0112).

Change 4 0116-2
 TM 9-2350-264-10-1 0116

OPERATE COMMANDER'S WEAPON (FIRE COMMANDER'S

WEAPON) - Continued

6. Look through commander's weapon sight (9), or through unity periscope (10) and steel
sights underneath weapon. Lay aiming point on target with CWS power or manual con-
trols.

NOTE
Commander's weapon sight (9) provides 3X magnification and contains a bal-
listic reticle. Numbers (11) are in hundreds of meters.

7. Alert crew on intercom by announcing "Caliber .50."

8. Fire commander's weapon by pressing button (3) on CWS elevation crank handle (4).
Release button (3) to cease firing.

0116-3 Change 4
 TM 9-2350-264-10-1 0116

OPERATE COMMANDER'S WEAPON (FIRE COMMANDER'S

WEAPON) - Continued

9. If button (3) will not fire weapon, press down on butterfly trigger (2) on weapon's backplate.
Release butterfly trigger (2) to cease firing.

NOTE
If commander's weapon fails to fire when pressing butterfly trigger (2), do PER-
FORM FAILURE-TO-FIRE PROCEDURES (WP 0118). If commander's
weapon fails to fire only when using button (3), clear machinegun (WP 0117)
and do Troubleshooting (Vol 2, WP 0350).

10. Set SAFE/ARMED switch (8) to SAFE (left) position to secure from firing and then let go.

Change 4 0116-4
 TM 9-2350-264-10-1 0116

OPERATE COMMANDER'S WEAPON (FIRE COMMANDER'S

WEAPON) - Continued

11. Make sure red ARMED light (5) and, if equipped, (6) is not lit.

12. Move butterfly trigger safety (1) until S can be seen.

13. When all firing is complete, clear commander's weapon (WP 0117).

END OF TASK

END OF WORK PACKAGE

0116-5/6 blank Change 4
OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE
COMMANDER'S WEAPON) - Continued
TM 9-2350-264-10-1 0116.1

OPERATOR MAINTENANCE
OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE
COMMANDER'S WEAPON)

INITIAL SETUP:
References References (continued)
WP 0094.1 WP 0117
WP 0098.1 WP 0118
WP 0112.1 WP 0123.1
WP 0113.1
WP 0114 Vol 2, WP 0351
WP 0115 TM 9-1005-213-10

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS

WARNING
• Remember to always set trigger safety (1) to SAFE position until ready to
fire. Accidental firing of weapons can kill or seriously injure personnel.

• Ensure SCWS is stowed properly when not in use (WP 0123.1). Failure to
stow SCWS properly can result in an interference with operation of the
loader's hatch. In emergency conditions, the inability to open the loader's
hatch could result in personnel injury or death.

• Ensure M10 charging handle (1.1) is properly stowed prior to operating the
SCWS (WP 0098.1). Failure to properly stow the M10 charging handle (1.1)
may result in an unintentional discharge of the weapon that may kill or seri-
ously injure personnel.

0116.1-1 Change 3
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

WARNING
If S is not exposed on trigger safety (1), commander's weapon can be fired by
pressing trigger (2) on backplate, by pushing trigger (3) on SCWS Manual
Elevation Control Handle (4), or by squeezing trigger (5) on SCWS Control
Handle Assembly (SCHA) (6). Make sure ARMED indicator light (7) on SAFE/
ARM MODULE (SAM) (8) is not lit at all times unless you are ready to fire
weapon.

Change 3 0116.1-2
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

WARNING
The procedure for transitioning from either power mode to manual mode, or
from manual mode to power mode is important and must be performed in
sequence. If Power Azimuth Drive Assembly Select Lever (PADASL) (9) and
Manual Azimuth Drive Assembly Select Lever (MADASL) (10) are disengaged
at the same time, the SCWS can traverse freely and hit personnel, causing
serious injury.

0116.1-3 Change 3
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

CAUTION

• Ensure ballistic windows are in closed/protected position prior to operating

SCWS (WP 0094.1). Failure to do so will result in damage to equipment.

• SCWS cannot be traversed more than 360 ° from STOW position

(WP 0123.1), due to SCWS power cables. Damage to equipment may
occur if SCWS is traversed more than 360 ° from STOW position.

• Do not attempt to elevate or depress SCWS in power mode if a weapon is

not mounted in the cradle. Elevating and depressing SCWS in power mode
without the weight of a weapon to balance out the equilibrator will result in
damage to the motor on the elevation drive assembly.

1. Power up turret and SCWS (WP 0094.1). Ensure .50 caliber reticle, day or thermal, is dis-
played in Display Control Module (DCM) (11) (WP 0114).

Change 3 0116.1-4
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

2. Power up Remote Thermal Sight (RTS) (WP 0114).

3. Install commander's weapon (WP 0098.1).

4. Load commander's weapon (WP 0115).

5. Set trigger safety (1) on commander's weapon to the left until F can be seen, refer to
TM 9-1005-213-10.

WARNING
Gun will now fire if trigger (2) on backplate is pushed, if trigger (3) on MECH (4)
is pressed, or if SAFE/ARM switch (12) was set to ARM (up) position, and trig-
ger (5) on SCHA (6) is pressed.

6. Alert crew over intercom by announcing ″CALIBER .50″ .

0116.1-5 Change 3
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

7. Set SAFE/ARM switch (12) on SAM (8) to ARMED (up) position, then release switch. Make
sure ARMED indicator light (7) is lit. If red ARMED indicator light (7) does not come on, per-
form Troubleshooting (Vol 2, WP 0351).

Change 3 0116.1-6
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

NOTE
• For power mode operation of SCWS, see (WP 0112.1).

• For manual mode operation of SCWS, see (WP 0113.1).

8. Look thru DCM (11) or unity periscope (13), and lay commander's weapon on target using
power controls (WP 0112.1), or manual controls (WP 0113.1).

0116.1-7 Change 3
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

9. To fire commander's weapon, engage palm switch (14) and squeeze trigger (5) on SCHA
(6). Release trigger (5) to cease firing.

10. To use an alternate method of fire, push trigger (3) on MECH (4). Release trigger (3) to
cease firing.

Change 3 0116.1-8
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

NOTE
If commander's weapon fails to fire when pressing trigger (5) on SCHA (6), do
PERFORM FAILURE-TO-FIRE PROCEDURES (WP 0118). If commander's
weapon fails to fire only when using trigger on SCHA (6), clear commander's
weapon (WP 0117) and do Troubleshooting (Vol 2, WP 0351).

0116.1-9 Change 3
 TM 9-2350-264-10-1 0116.1

OPERATE STABILIZED COMMANDER'S WEAPON STATION (SCWS) (FIRE COM-

MANDER'S WEAPON) - Continued

FIRE COMMANDER'S WEAPON USING SCWS POWER CONTROLS - Continued

11. Move trigger safety on commander's weapon to S, and set the SAFE/ARM switch (12) on
SAM (8) to SAFE (down) position, then release switch. Make sure red ARMED indicator
light (7) is not lit. Clear commander's weapon (WP 0117).

END OF TASK

END OF WORK PACKAGE

Change 3 0116.1-10
OPERATE COMMANDER'S WEAPON (CLEAR COMMANDER'S
WEAPON) - Continued
TM 9-2350-264-10-1 0117

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON (CLEAR COMMANDER'S WEAPON)

INITIAL SETUP:
References References (continued)
WP 0094 WP 0118
WP 0098.1 TM 9-1005-213-10

WARNING
• Keep weapon pointed down range.

• Stay clear of muzzle end of barrel.

• Remember to always set manual safety to SAFE position until ready to fire.
Accidental firing of weapons can kill or seriously injure personnel.

NOTE
If weapon failed to fire or misfired, perform FAILURE-TO-FIRE PROCEDURES
(WP 0118).

1. Power up commander's station and turret (WP 0094).

2. Set SAFE/ARMED switch (1) to SAFE (left) position, then release switch. Make sure red
ARMED light (2) and, if equipped, (3) is not lit. If equipped with Stabilized Commander's
Weapon Station (SCWS), set SAFE/ARMED switch (4) on SAFE/ARMED MODULE (SAM)
(5) to SAFE (down) position, then release switch. Make sure red ARMED light (6) on SAM
(5) is not lit.

0117-1 Change 3
 TM 9-2350-264-10-1 0117

OPERATE COMMANDER'S WEAPON (CLEAR COMMANDER'S

WEAPON) - Continued

WARNING
Never open the cover on a hot weapon if a malfunction occurs. The possibility
of a cook-off condition exists when the barrel is hot.

3. Clear weapon (TM 9-1005-213-10).

4. If a ruptured cartridge is in chamber (7), use extractor tool to remove cartridge

(TM 9-1005-213-10).

5. If an unfired round is in chamber (7) and cannot be safely fired, use stuck or ruptured car-
tridge procedure to remove cartridge (TM 9-1005-213-10).

Change 3 0117-2
 TM 9-2350-264-10-1 0117

OPERATE COMMANDER'S WEAPON (CLEAR COMMANDER'S

WEAPON) - Continued

CAUTION
Ensure M10 charging handle (8) is properly stowed after clearing the weapon
and prior to operating the SCWS (WP 0098.1). Failure to properly stow the M10
charging handle (8) may result in damage to equipment.

6. If a round can be fired, do the following:

a. Move M10 lock selector forward. Pull back on charging handle (8) until a click is heard,
then ease bolt forward.

b. Close receiver cover (9).

c. Set trigger safety (10) to F.

d. Press the trigger (11) to fire round.

e. Set trigger safety (10) to S.

0117-3 Change 3
 TM 9-2350-264-10-1 0117

OPERATE COMMANDER'S WEAPON (CLEAR COMMANDER'S

WEAPON) - Continued

f. Clear weapon (TM 9-1005-213-10).

END OF TASK

END OF WORK PACKAGE

Change 3 0117-4
 TM 9-2350-264-10-1 0118

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON (PERFORM FAILURE-TO-FIRE
PROCEDURES)

INITIAL SETUP:
References References (continued)
WP 0098 WP 0116.1
WP 0098.1 TM 9-1005-213-10
WP 0116

WARNING
• Keep weapon pointed down range.

• Stay clear of muzzle end of barrel.

• Weapon can fire accidentally and kill.

• If caliber .50 has fired 100 rounds or more within 1 minute, it is considered a
hot gun. Immediate action must be applied within 10 seconds of a stoppage.
Under no circumstances will receiver cover (1) be opened during this period.

• If bolt cannot be retracted on a hot gun, keep receiver cover (1) closed and
weapon pointed at target downrange. Allow weapon to cool for at least 15
minutes. Notify field maintenance.

• Remember to always set manual safety to safe (S) position until ready to fire.
Accidental firing of weapons can kill or seriously injure personnel.

• Ensure M10 charging handle (1.1) is properly stowed prior to operating the
Commander's Weapon Station (CWS) (WP 0098), or if equipped, Stabilized
Commander's Weapon Station (SCWS) (WP 0098.1). Failure to properly
stow the M10 charging handle (1.1) may result in an unintentional discharge
of the weapon that may kill or seriously injure personnel.

1. Immediate action when failure-to-fire occurs (misfire or hangfire) is as follows:

a. Alert the crew by announcing "STOPPAGE" on the intercom.

0118-1 Change 4
 TM 9-2350-264-10-1 0118

OPERATE COMMANDER'S WEAPON (PERFORM FAILURE-TO-FIRE

PROCEDURES) - Continued

b. Charge weapon, refer to TM 9-1005-213-10. During charging, look at feed chute (2) to
see if ammunition is feeding properly and that unfired round is ejected.

c. Stow M10 charging handle (1.1) (WP 0098), or if equipped with SCWS (WP 0098.1).

d. Attempt to fire weapon (WP 0116) or (WP 0116.1), if equipped with SCWS.

Change 4 0118-2
 TM 9-2350-264-10-1 0118

OPERATE COMMANDER'S WEAPON (PERFORM FAILURE-TO-FIRE

PROCEDURES) - Continued

WARNING
Never open the cover on a hot weapon. An open cover cook-off could occur and
result in serious injury or death.

NOTE
If weapon is a hot gun, wait 15 minutes for possibility of a hangfire or cook-off.

2. If weapon still fails to fire:

a. Clear weapon, refer to TM 9-1005-213-10. Look to see if unfired round or fired case
ejects.

(1) If round or case ejects, go to step 3.

(2) If no ejection occurs, open receiver cover (1) and look in chamber (3), T-slot (4),
and receiver assembly (5) for any rounds. If weapon is clear, go to step 3.

(3) If a ruptured cartridge is found, perform Ruptured Cartridge Case Removal, refer
to TM 9-1005-213-10.

(4) If an unfired round or stuck cartridge is found, perform Ruptured Cartridge Case
Removal, see TM 9-1005-213-10. Do not attempt to fire weapon.

0118-3 Change 4
 TM 9-2350-264-10-1 0118

OPERATE COMMANDER'S WEAPON (PERFORM FAILURE-TO-FIRE

PROCEDURES) - Continued

3. Inspect weapon to determine the cause of stoppage, see TM 9-1005-213-10.

a. If no other problems are noted, load weapon and attempt to fire weapon (WP 0116), or
(WP 0116.1) if equipped with SCWS.

b. If problem is not solved, notify field maintenance.

END OF TASK

END OF WORK PACKAGE

Change 4 0118-4
OPERATE COMMANDER'S WEAPON (PREPARE WEAPON FOR
TRAVEL) - Continued
TM 9-2350-264-10-1 0119

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON (PREPARE WEAPON FOR TRAVEL)

INITIAL SETUP:
References References (continued)
WP 0112 WP 0117
WP 0113

1. Clear commander's weapon (WP 0117).

2. Traverse weapon toward front of turret using either manual mode (WP 0113) or power
mode (WP 0112).

3. Move CWS POWER/MANUAL lever to POWER position to engage magnetic brake in azi-
muth gearbox to keep Commander's Weapon Station (CWS) locked in position (WP 0112).
END OF TASK

END OF WORK PACKAGE

0119-1/2 blank
OPERATE COMMANDER'S WEAPON (PREPARE STABILIZED COMMANDER'S
WEAPON STATION (SCWS) FOR TRAVEL/TRANSPORT) - Continued
TM 9-2350-264-10-1 0119.1

OPERATOR MAINTENANCE
OPERATE COMMANDER'S WEAPON (PREPARE STABILIZED COMMANDER'S
WEAPON STATION (SCWS) FOR TRAVEL/TRANSPORT)

INITIAL SETUP:
References References (continued)
WP 0113.1 WP 0122.1
WP 0117 WP 0123.1

PREPARE SCWS FOR TRAVEL/TRANSPORT

WARNING
If the mount is depressed without the machinegun mounted, and the elevation
power/manual selection lever is moved to manual position, the mount will move
up rapidly which may cause serious injury to personnel.

CAUTION

Do not attempt to elevate or depress SCWS in power mode if a weapon is not

mounted in the cradle. Elevating and depressing SCWS in power mode without
the weight of a weapon to balance out the equilibrator will result in damage to
the motor on the elevation drive assembly.

1. Clear commander's weapon (WP 0117).

2. Remove commander's weapon (WP 0122.1).

3. Traverse SCWS to stow position (WP 0123.1).

4. Move Manual Azimuth Drive Assembly (MADA) to manual (forward) position (WP 0113.1).

0119.1-1 Change 2
 TM 9-2350-264-10-1 0119.1

OPERATE COMMANDER'S WEAPON (PREPARE STABILIZED COMMANDER'S

WEAPON STATION (SCWS) FOR TRAVEL/TRANSPORT) - Continued

PREPARE SCWS FOR TRAVEL/TRANSPORT - Continued

5. Remove retaining loop (1) from retaining pin (2) on Transport Locking Latch Assembly
(TLLA) (3).

6. With your right hand, apply downward pressure on the equilibrator (4).

7. With your left hand, move Elevation Move Select Lever (EMSL) (5) from POWER to
MANUAL position.

8. Move machinegun mount (6) to maximum depressed position. Hold machinegun mount (6)
in this position and move EMSL (5) from MANUAL to POWER position.

Change 2 0119.1-2
 TM 9-2350-264-10-1 0119.1

OPERATE COMMANDER'S WEAPON (PREPARE STABILIZED COMMANDER'S

WEAPON STATION (SCWS) FOR TRAVEL/TRANSPORT) - Continued

PREPARE SCWS FOR TRAVEL/TRANSPORT - Continued

9. Remove retaining pin (2) from the TLLA (3) and move latch forward from unlocked to locked
position (7). The lower half of TLLA (3) will fit underneath machinegun mount stop (8).
Insert retaining pin (2) into TLLA (3) and attach retaining loop (1).

WARNING
Counterweight is heavy and weighs approximately 50 lb (23 kg). Use two crew-
members to invert counterweight to transport position.

10. Place SCWS counterweight (9) into transport position.

a. While one crewmember holds counterweight (9), remove three bolts (10) from counter-
weight (9).

b. Turn over counterweight (9), and reinstall counterweight (9) with three bolts (10)
removed previously.

END OF TASK

RESTORE SCWS TO OPERATIONAL CONDITION

1. Place SCWS counterweight (9) into operational position.

a. While one crewmember holds counterweight (9), remove three bolts (10) from counter-
weight (9).

0119.1-3 Change 2
 TM 9-2350-264-10-1 0119.1

OPERATE COMMANDER'S WEAPON (PREPARE STABILIZED COMMANDER'S

WEAPON STATION (SCWS) FOR TRAVEL/TRANSPORT) - Continued

RESTORE SCWS TO OPERATIONAL CONDITION - Continued

b. Turn over counterweight (9), and reinstall counterweight (9) with three bolts (10)
removed previously.

2. Remove retaining loop (1) from retaining pin (2).

3. With your right hand, apply downward pressure on the equilibrator (4).

4. Remove retaining pin (2) from the TLLA (3) and move latch rearward from locked to unlock
position (7). Install retaining pin (2) in TLLA (3).

5. With your left hand, move EMSL (5) from POWER to MANUAL position.

Change 2 0119.1-4
 TM 9-2350-264-10-1 0119.1

OPERATE COMMANDER'S WEAPON (PREPARE STABILIZED COMMANDER'S

WEAPON STATION (SCWS) FOR TRAVEL/TRANSPORT) - Continued

RESTORE SCWS TO OPERATIONAL CONDITION - Continued

6. While maintaining pressure on equilibrator (4), raise machinegun mount (6) to the maximum
elevated position.

7. Release equilibrator and move EMSL (5) from MANUAL to POWER position.
END OF TASK

END OF WORK PACKAGE

0119.1-5/6 blank Change 2
OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (FIRE GRENADE
DISCHARGERS) - Continued
TM 9-2350-264-10-1 0120

OPERATOR MAINTENANCE
OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (FIRE GRENADE
DISCHARGERS)

INITIAL SETUP:
References References (continued)
WP 0094 Vol 2, WP 0222

1. Load grenade dischargers (Vol 2, WP 0222).

2. Power up commander's station and turret (WP 0094).

WARNING

• Due to potential hazard of burning red phosphorus (RP) pellets being blown
into open hatches, firing grenades with open hatches into strong headwinds,
or while moving rapidly forward should be avoided whenever possible. Crew
compartment should be free of combustibles to minimize fuel for any pellets
which do fall into tank.

• All personnel outside tank must stay at least 200 m (219 yd) from tank dur-
ing firing.

3. For tanks equipped with Upgraded Tank Commander's Panel (UTCP), go to step 6. Move
and hold GRENADES READY/SAFE switch (1) on Tank Commander's Panel (TCP) (2) to
READY.

NOTE
SALVO 1 (3) pushbutton fires half of the grenades from right and left discharg-
ers. To fire all grenades, push both SALVO 1 (3) and SALVO 2 (4) pushbuttons
at the same time.

4. Push SALVO 1 (3) and/or SALVO 2 (4) pushbuttons on TCP (2) and then let go.

0120-1
 TM 9-2350-264-10-1 0120

OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (FIRE GRENADE

DISCHARGERS) - Continued

5. Let go of GRENADES READY/SAFE switch (1). It will automatically return to SAFE posi-
tion.

6. For UTCP equipped tanks: lift cover (5) to gain access to RDY pushbutton (6), SAL 1 push-
button (7), and SAL 2 pushbutton (8).

7. Press and hold RDY pushbutton (6) on UTCP (9).

NOTE
SAL 1 (7) and SAL 2 (8) pushbuttons fire half of the grenades from right and left
dischargers. To fire all grenades, push both SAL 1 (7) and SAL 2 (8) pushbut-
tons at the same time.

8. Push SAL 1 (7) and/or SAL 2 (8) pushbuttons on UTCP (9) and then let go.

9. Repeat step 8 for second salvo, if required.

10. Let go of RDY pushbutton (6).

END OF TASK

END OF WORK PACKAGE

0120-2
 TM 9-2350-264-10-1 0121

OPERATOR MAINTENANCE
OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (PERFORM FAILURE-TO-
FIRE PROCEDURES)

INITIAL SETUP:
References References (continued)
WP 0120 Vol 2, WP 0223

WARNING
• When a misfire occurs, all personnel must stay 200 m (219 yd) from tank.
Crewmembers must close all hatches and keep hatches closed for at least 5
minutes after last attempt to fire. The misfire could delay fire causing injury
to personnel.

• Do not attempt to move a dud smoke grenade. Notify supervisor and give
type, quantity, and location of the dud grenade(s).

1. Immediate action when a failure-to-fire (misfire) occurs:

a. Wait 10 seconds and try to fire again (WP 0120).

b. If grenade dischargers did not fire, wait 10 more seconds and try to fire again
(WP 0120).

c. If grenade dischargers did not fire, let go of the READY/SAFE SWITCH (1) or RDY
pushbutton (2) on Upgraded Tank Commander's Panel (UTCP) equipped tanks. The
READY/SAFE switch will automatically return to SAFE position.

d. Remain in vehicle and wait 5 minutes.

e. Warn all personnel, in direction of fire, to remain 125 m (137 yd) away from tank.

f. Unload grenade discharger (Vol 2, WP 0223) that failed to fire. Place misfires into gre-
nade shipping container and move container 100 m (109 yd) away from soldiers, build-
ings, and equipment.

0121-1
 TM 9-2350-264-10-1 0121

OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (PERFORM FAILURE-TO-

FIRE PROCEDURES) - Continued

g. Dispose of misfires in accordance with local Standing Operating Procedures (SOP).

WARNING
Misfired and dud grenades should be kept separated from each other. Misfired
grenades can be electrically discharged and should be handled with care.

2. Action when launched grenade(s) fails to burst or burn (dud):

a. Warn all persons to remain 100 m (109 yd) away from grenade(s).

b. If launched grenade(s) has failed to burst or burn after 15 minutes, qualified personnel
should place dud grenades in grenade shipping container. Move containers 100 m (109
yd) away from soldiers, buildings, and equipment.

c. Dispose of grenades in accordance with local SOP.

END OF TASK

END OF WORK PACKAGE

0121-2
POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S
WEAPON) - Continued
TM 9-2350-264-10-1 0122

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S WEAPON)

INITIAL SETUP:
Tools and Special Tools References (continued)
Mitten, heat protective (Vol 3, WP 0499, WP 0117
Item 50) Vol 2, WP 0324
References
WP 0112

WARNING
Ensure weapon has been cleared prior to removing from mount (WP 0117).
Accidental firing of weapons can kill or seriously injure personnel.

NOTE
To remove M240 machinegun from commander's machinegun mount (1),
(Vol 2, WP 0324).

1. Clear commander's weapon (WP 0117).

2. Elevate commander's machinegun mount (1) just below 0 ° elevation using Commander's
Weapon Station (CWS) elevation crank handle (WP 0112).

3. While looking into hole (2), pull and hold charging handle (3) towards rear so lug (4) on bar-
rel spring can be seen.

0122-1 Change 3
 TM 9-2350-264-10-1 0122

POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S

WEAPON) - Continued

WARNING
If barrel (5) is hot, use heat protective mittens to prevent hand burns.

4. Unscrew and remove barrel (5) from barrel support (6).

5. Release charging handle (3) and allow bolt to go forward.

6. Release spring loaded mounting pins (7, 8) and pull out of receiver (9).

7. Lift receiver (9) from machinegun mount (1).

8. Insert mounting pins (7, 8) back into holes in mount (1).

9. Pull mounting pin (10) from stowage slot (11). Insert mounting pin (10) in hole (12).

END OF TASK

END OF WORK PACKAGE

Change 3 0122-2
POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S WEAPON
FROM STABILIZED COMMANDER'S WEAPON STATION (SCWS) - Continued
TM 9-2350-264-10-1 0122.1

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S WEAPON
FROM STABILIZED COMMANDER'S WEAPON STATION (SCWS)

INITIAL SETUP:
Tools and Special Tools References (continued)
Mitten, heat protective (Vol 3, WP 0499, Vol 2, WP 0324
Item 50) TM 9-1005-213-10
References
WP 0112.1
WP 0117

WARNING
Ensure weapon has been cleared prior to removing from mount (WP 0117).
Accidental firing of weapons can kill or seriously injure personnel.

CAUTION
Do not attempt to elevate or depress SCWS in power mode if a weapon is not
mounted in the cradle. Elevating and depressing SCWS in power mode without
the weight of a weapon to balance out the equilibrator will result in damage to
the motor on the elevation drive assembly.

NOTE
To remove M240 machinegun from commander's machinegun mount, see
(Vol 2, WP 0324).

1. Clear commander's weapon (WP 0117).

2. Ensure power/manual select lever (1) on Elevation Mode Select Lever (EMSL) is in POWER
position (WP 0112.1).

3. Using SCWS Control Handle Assembly (SCHA), place commander's machinegun mount (2)
in elevation to just above 0 °. This will provide access to rear Anti-Backlash Clamp (ABC)
adjustment knob (3).

0122.1-1 Change 3
 TM 9-2350-264-10-1 0122.1

POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S WEAPON

FROM STABILIZED COMMANDER'S WEAPON STATION (SCWS) - Continued

4. Remove barrel (4) from machinegun receiver (5), refer to TM 9-1005-213-10.

5. Remove tension on mounting pins (6, 7) by turning ABC adjustment knobs (3, 8) counter-
clockwise.

6. Remove mounting pins (6, 7) from machinegun mount (2).

7. Remove machinegun receiver (5) from machinegun mount (2).

Change 3 0122.1-2
 TM 9-2350-264-10-1 0122.1

POWER DOWN AND SECURE STATION (REMOVE COMMANDER'S WEAPON

FROM STABILIZED COMMANDER'S WEAPON STATION (SCWS) - Continued

8. Insert mounting pins (6, 7) back into holes in mount (2).

9. To stow machinegun mount (2), do the following:

a. Stand on the right side of SCWS, and in front of commander's hatch, facing towards
loader's hatch.

b. Place your right hand on equilibrator (9), and apply firm downward pressure.

c. While maintaining pressure on equilibrator, with your left hand move power/manual
selection lever (1) down into MANUAL position (10). Ensure power/manual selection
lever (1) locks into position.

d. Without removing your right hand, release pressure on equilibrator (9), and allow
machinegun mount (2) to rise up until it has reached maximum elevation of the mount.

e. Move power/manual selection lever (1) up into POWER position (11).

END OF TASK

END OF WORK PACKAGE

0122.1-3/4 blank Change 3
POWER DOWN AND SECURE STATION (SECURE COMMANDER'S STATION AND
TURRET) - Continued
TM 9-2350-264-10-1 0123

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (SECURE COMMANDER'S STATION AND
TURRET)

INITIAL SETUP:
Personnel Required References (continued)
Two Vol 2, WP 0175
References Vol 2, WP 0194
WP 0096 Vol 2, WP 0231
WP 0112 Vol 2, WP 0243
Vol 2, WP 0145

NOTE
Loader should Power Down Loader's Station (Vol 2, WP 0231) and gunner
should Power Down Gunner's Station (Vol 2, WP 0175) before tank com-
mander does this task.

1. Move CWS MANUAL/POWER lever to POWER position (WP 0112).

2. Make sure MANUAL light (1) on Gunner's Primary Sight (GPS) (2) is lit.

3. Make sure MANUAL light (3) on loader's panel (4) is lit.

4. Make sure gun travel lock is locked (Vol 2, WP 0145).

0123-1
 TM 9-2350-264-10-1 0123

POWER DOWN AND SECURE STATION (SECURE COMMANDER'S STATION AND

TURRET) - Continued

5. Make sure SAFE/ARMED handle (5) is down in SAFE position.

6. Make sure turret lock is LOCKED (Vol 2, WP 0194).

7. Disconnect CVC cord from intercom control box (Vol 2, WP 0243).

8. Close commander's hatch (WP 0096).

END OF TASK

END OF WORK PACKAGE

0123-2
POWER DOWN AND SECURE STATION (SECURE STABILIZED COMMANDER'S
WEAPON STATION (SCWS) AND TURRET - Continued
TM 9-2350-264-10-1 0123.1

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (SECURE STABILIZED COMMANDER'S
WEAPON STATION (SCWS) AND TURRET

INITIAL SETUP:
References References (continued)
WP 0096 Vol 2, WP 0175
WP 0112.1 Vol 2, WP 0194
WP 0113.1 Vol 2, WP 0231
WP 0122.1
Vol 2, WP 0145 Vol 2, WP 0243

CAUTION
Do not attempt to elevate or depress SCWS in power mode if a weapon is not
mounted in the cradle. Elevating and depressing SCWS in power mode without
the weight of a weapon to balance out the equilibrator will result in damage to
the motor on the elevation drive assembly.

NOTE
Power down loader's station (Vol 2, WP 0231), and power down gunner's sta-
tion (Vol 2, WP 0175) should be performed prior to performing this task.

1. Remove commander's weapon (WP 0122.1).

2. Traverse SCWS (WP 0112.1) or (WP 0113.1).

3. Position STOW indicator (1) in alinement with STOW marker on turret wall. Line up STOW
indicator between > and STOW (2).

4. Ensure loader's hatch has clearance to open and close (Vol 2, WP 0243).

0123.1-1 Change 3
 TM 9-2350-264-10-1 0123.1

POWER DOWN AND SECURE STATION (SECURE STABILIZED COMMANDER'S

WEAPON STATION (SCWS) AND TURRET - Continued

WARNING
The Manual Azimuth Drive Assembly (MADA) (3) is used as an azimuth lock/
power disconnect whenever the commander's station is not occupied or not in
use. Failure to place the MADA (3) into manual operation position may result in
the cupola moving and causing serious injury to personnel or damage to equip-
ment. Ensure that MADA (3) is in forward, manual operation position, prior to
entering or exiting vehicle.

5. If SCWS is in POWER mode, move MADA (3) forward and lock into position (WP 0113.1).

6. Make sure MANUAL light (4) on Gunner's Primary Sight (GPS) (5) is lit.

7. Make sure MANUAL light (6) on loader's panel (7) is lit.

8. Make sure gun travel lock is locked (Vol 2, WP 0145).

9. Make sure SAFE/ARMED handle (8) is down in SAFE position.

10. Make sure turret lock is LOCKED (Vol 2, WP 0194).

11. Disconnect CVC cord from intercom control box (Vol 2, WP 0243).

12. Close commander's hatch (WP 0096).

END OF TASK

END OF WORK PACKAGE

Change 3 0123.1-2
POWER DOWN AND SECURE STATION (POWER DOWN COMMANDER'S
STATION AND TURRET) - Continued
TM 9-2350-264-10-1 0124

OPERATOR MAINTENANCE
POWER DOWN AND SECURE STATION (POWER DOWN COMMANDER'S
STATION AND TURRET)

INITIAL SETUP:
References References (continued)
WP 0086 Vol 2, WP 0269
WP 0104 Vol 2, WP 0339

1. Turn dome light switch (1) all the way counterclockwise to turn dome light OFF.

2. Make sure AUX HYDR POWER switch (2), or AUX HYD pushbutton (3) on the Upgraded
Tank Commander's Panel (UTCP) (4) is set to OFF, and that AUX HYDR POWER (5) or
AUX HYD light (6) is not lit.

WARNING
Never turn vehicle master power to OFF if engine is running. Tank may lurch
forward if transmission is in N (neutral) or P (pivot), and injury could occur. Also,
damage to engine can result.

CAUTION

• Ensure EAPU OUTPUT POWER switch is set to OFF to prevent electrical

system lock-up (Vol 2, WP 0269).

• If equipped with Force XXI Battle Command Brigade and Below (FBCB2),
do not power down tank with FBCB2 running. FBCB2 software may get cor-
rupted and FBCB2 will not power up again.

• If engine is running make sure Nuclear, Biological, Chemical (NBC) main

system is turned off before driver shuts down engine (WP 0086).

• If hull systems have been operated, the driver shall power down the tank to
make sure that the driver's master panel switches are set to the proper posi-
tion before the VEHICLE MASTER POWER switch (7) or MST pushbutton
(8) on UTCP equipped tanks is set to OFF. Damage to engine can result.

0124-1
 TM 9-2350-264-10-1 0124

POWER DOWN AND SECURE STATION (POWER DOWN COMMANDER'S STA-

TION AND TURRET) - Continued

0124-2
 TM 9-2350-264-10-1 0124

POWER DOWN AND SECURE STATION (POWER DOWN COMMANDER'S STA-

TION AND TURRET) - Continued

NOTE
• Make sure all other crew stations are ready for vehicle master power and
turret power to be turned off.

• Turret power and TURRET POWER light (9) go off when VEHICLE MAS-
TER POWER switch (7) is set to OFF.

• On UTCP equipped tanks, ensure turret power and TUR light (10) go off
when MST pushbutton (8) is pressed to off.

• When engine is not running, auxiliary hydraulic power and AUX HYDR
POWER light (5) also go off when VEHICLE MASTER POWER switch (7) is
turned off.

• On UTCP equipped tanks, when engine is not running, auxiliary hydraulic

power and AUX HYD light (6) also go off when MST pushbutton (8) is set to
off.

• Do Immediate Action For Vehicle Master Power Failure To Power Down

(Vol 2, WP 0339) if field maintenance is not available.

• If equipped with Forward Looking Infrared Receiver (FLIR), TRU cooling fan
and INU will remain on for 60 seconds after the master power is shut off.

3. If equipped with FBCB2, make sure FBCB2 is not running. If running, shut down FBCB2
(WP 0104) before shutting down tank.

4. Make sure that the Display Control Module (DCM) goes off when BRIGHTNESS knob (11)
is turned all the way counterclockwise to OFF position.

0124-3
 TM 9-2350-264-10-1 0124

POWER DOWN AND SECURE STATION (POWER DOWN COMMANDER'S STA-

TION AND TURRET) - Continued

5. Set and hold VEHICLE MASTER POWER switch (7) to OFF. When VEHICLE MASTER
POWER light (12) goes out, release VEHICLE MASTER POWER switch (7). If VEHICLE
MASTER POWER light (12) does not go out, notify field maintenance. On UTCP equipped
tanks, press MST pushbutton (8). MST light (13) will go off. If MST light (13) does not go
out, notify field maintenance.

END OF TASK

END OF WORK PACKAGE

0124-4
 EXIT TANK - Continued

TM 9-2350-264-10-1 0125

OPERATOR MAINTENANCE
EXIT TANK

INITIAL SETUP:
References References (continued)
WP 0049 Vol 2, WP 0234

1. Exit tank through loader's hatch (WP 0049).

2. Close and lock loader's hatch (Vol 2, WP 0234).

3. Dismount tank over front slope.

END OF TASK

END OF WORK PACKAGE

0125-1/2 blank
COMMANDER'S STATION ADDITIONAL REFERENCES - Continued

TM 9-2350-264-10-1 0126

OPERATOR MAINTENANCE
COMMANDER'S STATION ADDITIONAL REFERENCES

INITIAL SETUP:
References References (continued)
WP 0045 Vol 2, WP 0222
WP 0047 Vol 2, WP 0223
WP 0048 Vol 2, WP 0275

1. PREPARE STATION FOR OPERATION (OPERATE DOME LIGHT) (WP 0047)

2. PREPARE STATION FOR OPERATION (OPERATE INTERCOM) (WP 0045)

3. OPERATE PORTABLE FIRE EXTINGUISHERS (WP 0048)

4. OPERATE CHEMICAL, BIOLOGICAL, RADIOLOGICAL, AND NUCLEAR SYSTEM (Vol 2,

WP 0275)

5. OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (LOAD GRENADE DISCHARG-

ERS) (Vol 2, WP 0222)

6. OPERATE M250/M257 GRENADE LAUNCHER SYSTEM (UNLOAD GRENADE DIS-

CHARGERS) (Vol 2, WP 0223)
END OF TASK

END OF WORK PACKAGE

0126-1/2 blank
 RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE
For use of this form, see AR 25-30, the proponent agency is OAASA Date form filled out

INSTRUCTIONS FOR SUBMITTING THE DA FORM 2028

After completing the DA Form 2028 (Recommended Changes to Publications and Blank Forms), you may send it via Email directly to
the proponent publication control officer (PCO) for publications or the Forms Management Officer (FMO) for forms, as appropriate.
You may obtain proponent PCO/FMO Email addresses at https://armypubs.us.army.mil/corporate/directory_1.html (CAC access
only). As an alternative, you may mail the DA Form 2028 via the U.S. Postal Service to the proponent using the address found on the
publication's title page, under the heading, "Suggested improvements."
Part II (page 2) is for changes to Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM).
DETERMINING AND SELECTING THE PROPER PROPONENT
You can identify the proper proponent for any publication or form by searching for the title using DA Pam 25-30, which can be
accessed at: http://www.apd.army.mil/pamdocs/APD_Search.asp
TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP Code)
U.S. Army TACOM Life Cycle Management Command
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727 Your Mailing Address
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART I - ALL PUBLICATIONS (EXCEPT RPSTL AND SC/SM) AND BLANK FORMS
PUBLICATION/FORM NUMBER DATE TITLE

TM Number Date of the TM Title of the TM

PARA-
ITEM PAGE GRAPH LINE FIGURE TABLE RECOMMENDED CHANGES AND REASON

0007-3 Figure 2, Item 9 should show a lock washer. Currently shows a

flat washer.

0018-2 Cleaning and inspection, Step 6, reference to governor support

pin (14) is wrong reference. Reference should be changed to (12).

SAMPLE

TYPED NAME, GRADE OR TITLE TELEPHONE SIGNATURE

EXCHANGE/AUTOVON, PLUS
EXTENSION
Your Name Your Signature
Your Phone Number

DA FORM 2028, SEP 2015 PREVIOUS EDITIONS ARE OBSOLETE APD LC v1.00
Page 1 0f 2
 TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP DATE
U.S. Army TACOM Life Cycle Management Command Code)
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727 Date form
6501 E. 11 Mile Road, Warren, MI 48397-5000 Your Address filled out
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART II- REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS
PUBLICATION/FORM NUMBER DATE TITLE

TM Number Date of the TM Title of the TM

TOTAL NO.
PAGE COLM LINE NATIONAL STOCK REFERENCE FIGURE ITEM OF MAJOR
RECOMMENDED ACTION
NO. NO. NO. NUMBER NO. NO. NO. ITEMS
SUPPORTED

SAMPLE
PART III - REMARKS (Any general remarks or recommendations, or suggestions for improvement of publications and
blank forms. Additional blank sheets may be used if more space is needed.)

TYPED NAME, GRADE OR TITLE TELEPHONE EXCHANGE/AUTOVON, SIGNATURE

PLUS EXTENSION
Your Name Your Phone Number Your Signature

DA FORM 2028, SEP 2015 Page 2 of 2

 RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE
For use of this form, see AR 25-30, the proponent agency is OAASA

INSTRUCTIONS FOR SUBMITTING THE DA FORM 2028

After completing the DA Form 2028 (Recommended Changes to Publications and Blank Forms), you may send it via Email directly to
the proponent publication control officer (PCO) for publications or the Forms Management Officer (FMO) for forms, as appropriate.
You may obtain proponent PCO/FMO Email addresses at https://armypubs.us.army.mil/corporate/directory_1.html (CAC access
only). As an alternative, you may mail the DA Form 2028 via the U.S. Postal Service to the proponent using the address found on the
publication's title page, under the heading, "Suggested improvements."
Part II (page 2) is for changes to Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM).
DETERMINING AND SELECTING THE PROPER PROPONENT
You can identify the proper proponent for any publication or form by searching for the title using DA Pam 25-30, which can be
accessed at: http://www.apd.army.mil/pamdocs/APD_Search.asp
TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP Code)
U.S. Army TACOM Life Cycle Management Command
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART I - ALL PUBLICATIONS (EXCEPT RPSTL AND SC/SM) AND BLANK FORMS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
TM 9-2350-264-10-1 07 Sept 2011 Tank, Combat, Full-Tracked, 120 MM Gun,
M1A1 (NSN 2350-01-087-1095) (EIC: AAB)
PARA-
ITEM PAGE GRAPH LINE FIGURE TABLE RECOMMENDED CHANGES AND REASON

TYPED NAME, GRADE OR TITLE TELEPHONE SIGNATURE

EXCHANGE/AUTOVON, PLUS
EXTENSION

DA FORM 2028, SEP 2015 PREVIOUS EDITIONS ARE OBSOLETE APD LC v1.00
Page 1 0f 2
 TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP DATE
U.S. Army TACOM Life Cycle Management Command Code)
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART II- REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
Tank, Combat, Full-Tracked, 120 MM Gun,
TM 9-2350-264-10-1 07 Sept 2011 M1A1 (NSN 2350-01-087-1095) (EIC: AAB)

TOTAL NO.
PAGE COLM LINE NATIONAL STOCK REFERENCE FIGURE ITEM OF MAJOR
RECOMMENDED ACTION
NO. NO. NO. NUMBER NO. NO. NO. ITEMS
SUPPORTED

PART III - REMARKS (Any general remarks or recommendations, or suggestions for improvement of publications and
blank forms. Additional blank sheets may be used if more space is needed.)

TYPED NAME, GRADE OR TITLE TELEPHONE EXCHANGE/AUTOVON, SIGNATURE

PLUS EXTENSION

DA FORM 2028, SEP 2015 Page 2 of 2

 RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE
For use of this form, see AR 25-30, the proponent agency is OAASA

INSTRUCTIONS FOR SUBMITTING THE DA FORM 2028

After completing the DA Form 2028 (Recommended Changes to Publications and Blank Forms), you may send it via Email directly to
the proponent publication control officer (PCO) for publications or the Forms Management Officer (FMO) for forms, as appropriate.
You may obtain proponent PCO/FMO Email addresses at https://armypubs.us.army.mil/corporate/directory_1.html (CAC access
only). As an alternative, you may mail the DA Form 2028 via the U.S. Postal Service to the proponent using the address found on the
publication's title page, under the heading, "Suggested improvements."
Part II (page 2) is for changes to Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM).
DETERMINING AND SELECTING THE PROPER PROPONENT
You can identify the proper proponent for any publication or form by searching for the title using DA Pam 25-30, which can be
accessed at: http://www.apd.army.mil/pamdocs/APD_Search.asp
TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP Code)
U.S. Army TACOM Life Cycle Management Command
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART I - ALL PUBLICATIONS (EXCEPT RPSTL AND SC/SM) AND BLANK FORMS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
TM 9-2350-264-10-1 07 Sept 2011 Tank, Combat, Full-Tracked, 120 MM Gun,
M1A1 (NSN 2350-01-087-1095) (EIC: AAB)
PARA-
ITEM PAGE GRAPH LINE FIGURE TABLE RECOMMENDED CHANGES AND REASON

TYPED NAME, GRADE OR TITLE TELEPHONE SIGNATURE

EXCHANGE/AUTOVON, PLUS
EXTENSION

DA FORM 2028, SEP 2015 PREVIOUS EDITIONS ARE OBSOLETE APD LC v1.00
Page 1 0f 2
 TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP DATE
U.S. Army TACOM Life Cycle Management Command Code)
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART II- REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
Tank, Combat, Full-Tracked, 120 MM Gun,
TM 9-2350-264-10-1 07 Sept 2011 M1A1 (NSN 2350-01-087-1095) (EIC: AAB)

TOTAL NO.
PAGE COLM LINE NATIONAL STOCK REFERENCE FIGURE ITEM OF MAJOR
RECOMMENDED ACTION
NO. NO. NO. NUMBER NO. NO. NO. ITEMS
SUPPORTED

PART III - REMARKS (Any general remarks or recommendations, or suggestions for improvement of publications and
blank forms. Additional blank sheets may be used if more space is needed.)

TYPED NAME, GRADE OR TITLE TELEPHONE EXCHANGE/AUTOVON, SIGNATURE

PLUS EXTENSION

DA FORM 2028, SEP 2015 Page 2 of 2

 RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE
For use of this form, see AR 25-30, the proponent agency is OAASA

INSTRUCTIONS FOR SUBMITTING THE DA FORM 2028

After completing the DA Form 2028 (Recommended Changes to Publications and Blank Forms), you may send it via Email directly to
the proponent publication control officer (PCO) for publications or the Forms Management Officer (FMO) for forms, as appropriate.
You may obtain proponent PCO/FMO Email addresses at https://armypubs.us.army.mil/corporate/directory_1.html (CAC access
only). As an alternative, you may mail the DA Form 2028 via the U.S. Postal Service to the proponent using the address found on the
publication's title page, under the heading, "Suggested improvements."
Part II (page 2) is for changes to Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM).
DETERMINING AND SELECTING THE PROPER PROPONENT
You can identify the proper proponent for any publication or form by searching for the title using DA Pam 25-30, which can be
accessed at: http://www.apd.army.mil/pamdocs/APD_Search.asp
TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP Code)
U.S. Army TACOM Life Cycle Management Command
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART I - ALL PUBLICATIONS (EXCEPT RPSTL AND SC/SM) AND BLANK FORMS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
TM 9-2350-264-10-1 07 Sept 2011 Tank, Combat, Full-Tracked, 120 MM Gun,
M1A1 (NSN 2350-01-087-1095) (EIC: AAB)
PARA-
ITEM PAGE GRAPH LINE FIGURE TABLE RECOMMENDED CHANGES AND REASON

TYPED NAME, GRADE OR TITLE TELEPHONE SIGNATURE

EXCHANGE/AUTOVON, PLUS
EXTENSION

DA FORM 2028, SEP 2015 PREVIOUS EDITIONS ARE OBSOLETE APD LC v1.00
Page 1 0f 2
 TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP DATE
U.S. Army TACOM Life Cycle Management Command Code)
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART II- REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
Tank, Combat, Full-Tracked, 120 MM Gun,
TM 9-2350-264-10-1 07 Sept 2011 M1A1 (NSN 2350-01-087-1095) (EIC: AAB)

TOTAL NO.
PAGE COLM LINE NATIONAL STOCK REFERENCE FIGURE ITEM OF MAJOR
RECOMMENDED ACTION
NO. NO. NO. NUMBER NO. NO. NO. ITEMS
SUPPORTED

PART III - REMARKS (Any general remarks or recommendations, or suggestions for improvement of publications and
blank forms. Additional blank sheets may be used if more space is needed.)

TYPED NAME, GRADE OR TITLE TELEPHONE EXCHANGE/AUTOVON, SIGNATURE

PLUS EXTENSION

DA FORM 2028, SEP 2015 Page 2 of 2

 RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE
For use of this form, see AR 25-30, the proponent agency is OAASA

INSTRUCTIONS FOR SUBMITTING THE DA FORM 2028

After completing the DA Form 2028 (Recommended Changes to Publications and Blank Forms), you may send it via Email directly to
the proponent publication control officer (PCO) for publications or the Forms Management Officer (FMO) for forms, as appropriate.
You may obtain proponent PCO/FMO Email addresses at https://armypubs.us.army.mil/corporate/directory_1.html (CAC access
only). As an alternative, you may mail the DA Form 2028 via the U.S. Postal Service to the proponent using the address found on the
publication's title page, under the heading, "Suggested improvements."
Part II (page 2) is for changes to Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM).
DETERMINING AND SELECTING THE PROPER PROPONENT
You can identify the proper proponent for any publication or form by searching for the title using DA Pam 25-30, which can be
accessed at: http://www.apd.army.mil/pamdocs/APD_Search.asp
TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP Code)
U.S. Army TACOM Life Cycle Management Command
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART I - ALL PUBLICATIONS (EXCEPT RPSTL AND SC/SM) AND BLANK FORMS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
TM 9-2350-264-10-1 07 Sept 2011 Tank, Combat, Full-Tracked, 120 MM Gun,
M1A1 (NSN 2350-01-087-1095) (EIC: AAB)
PARA-
ITEM PAGE GRAPH LINE FIGURE TABLE RECOMMENDED CHANGES AND REASON

TYPED NAME, GRADE OR TITLE TELEPHONE SIGNATURE

EXCHANGE/AUTOVON, PLUS
EXTENSION

DA FORM 2028, SEP 2015 PREVIOUS EDITIONS ARE OBSOLETE APD LC v1.00
Page 1 0f 2
 TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP DATE
U.S. Army TACOM Life Cycle Management Command Code)
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART II- REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
Tank, Combat, Full-Tracked, 120 MM Gun,
TM 9-2350-264-10-1 07 Sept 2011 M1A1 (NSN 2350-01-087-1095) (EIC: AAB)

TOTAL NO.
PAGE COLM LINE NATIONAL STOCK REFERENCE FIGURE ITEM OF MAJOR
RECOMMENDED ACTION
NO. NO. NO. NUMBER NO. NO. NO. ITEMS
SUPPORTED

PART III - REMARKS (Any general remarks or recommendations, or suggestions for improvement of publications and
blank forms. Additional blank sheets may be used if more space is needed.)

TYPED NAME, GRADE OR TITLE TELEPHONE EXCHANGE/AUTOVON, SIGNATURE

PLUS EXTENSION

DA FORM 2028, SEP 2015 Page 2 of 2

 RECOMMENDED CHANGES TO PUBLICATIONS AND BLANK FORMS DATE
For use of this form, see AR 25-30, the proponent agency is OAASA

INSTRUCTIONS FOR SUBMITTING THE DA FORM 2028

After completing the DA Form 2028 (Recommended Changes to Publications and Blank Forms), you may send it via Email directly to
the proponent publication control officer (PCO) for publications or the Forms Management Officer (FMO) for forms, as appropriate.
You may obtain proponent PCO/FMO Email addresses at https://armypubs.us.army.mil/corporate/directory_1.html (CAC access
only). As an alternative, you may mail the DA Form 2028 via the U.S. Postal Service to the proponent using the address found on the
publication's title page, under the heading, "Suggested improvements."
Part II (page 2) is for changes to Repair Parts and Special Tool Lists (RPSTL) and Supply Catalogs/Supply Manuals (SC/SM).
DETERMINING AND SELECTING THE PROPER PROPONENT
You can identify the proper proponent for any publication or form by searching for the title using DA Pam 25-30, which can be
accessed at: http://www.apd.army.mil/pamdocs/APD_Search.asp
TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP Code)
U.S. Army TACOM Life Cycle Management Command
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART I - ALL PUBLICATIONS (EXCEPT RPSTL AND SC/SM) AND BLANK FORMS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
TM 9-2350-264-10-1 07 Sept 2011 Tank, Combat, Full-Tracked, 120 MM Gun,
M1A1 (NSN 2350-01-087-1095) (EIC: AAB)
PARA-
ITEM PAGE GRAPH LINE FIGURE TABLE RECOMMENDED CHANGES AND REASON

TYPED NAME, GRADE OR TITLE TELEPHONE SIGNATURE

EXCHANGE/AUTOVON, PLUS
EXTENSION

DA FORM 2028, SEP 2015 PREVIOUS EDITIONS ARE OBSOLETE APD LC v1.00
Page 1 0f 2
 TO: (Forward to proponent of publication or form) (Include ZIP Code) FROM: (Activity and location) (Include ZIP DATE
U.S. Army TACOM Life Cycle Management Command Code)
ATTN: AMSTA-LCL-IMP/TECH PUBS MS 727
6501 E. 11 Mile Road, Warren, MI 48397-5000
usarmy.detroit.tacom.mbx.ilsc-tech-pubs@mail.mil

PART II- REPAIR PARTS AND SPECIAL TOOL LISTS AND SUPPLY CATALOGS/SUPPLY MANUALS
PUBLICATION/FORM NUMBER DATE TITLE
Technical Manual, Operator's Manual for
Tank, Combat, Full-Tracked, 120 MM Gun,
TM 9-2350-264-10-1 07 Sept 2011 M1A1 (NSN 2350-01-087-1095) (EIC: AAB)

TOTAL NO.
PAGE COLM LINE NATIONAL STOCK REFERENCE FIGURE ITEM OF MAJOR
RECOMMENDED ACTION
NO. NO. NO. NUMBER NO. NO. NO. ITEMS
SUPPORTED

PART III - REMARKS (Any general remarks or recommendations, or suggestions for improvement of publications and
blank forms. Additional blank sheets may be used if more space is needed.)

TYPED NAME, GRADE OR TITLE TELEPHONE EXCHANGE/AUTOVON, SIGNATURE

PLUS EXTENSION

DA FORM 2028, SEP 2015 Page 2 of 2

By Order of the Secretary of the Army:

MARTIN E. DEMPSEY
General, United States Army
Official: Chief of Staff

JOYCE E. MORROW
Administrative Assistant to the
Secretary of the Army
1121503

By Order of the Marine Corps:

J.M. GARNER
Product Group Director
Marine Corps Systems Command

Distribution:

To be distributed in accordance with the initial distribution number (IDN) 371211

requirements for TM 9-2350-264-10-1.

Marine Corps PCN: 184 089530 00

 THE METRIC SYSTEM AND EQUIVALENTS
Linear Measure Square Measure
1 Centimeter = 10 Millimeters = 0.01 Meters = 1 Sq Centimeter = 100 Sq Millimeters =
0.3937 Inches 0.155 Sq Inches
1 Meter = 100 Centimeters = 1000 Millimeters = 1 Sq Meter = 10,000 Sq Centimeters =
39.37 Inches 10.76 Sq Feet
1 Kilometer = 1000 Meters = 0.621 Miles 1 Sq Kilometer = 1,000,000 Sq Meters =
Weights 0.386 Sq Miles
Cubic Measure
1 Gram = 0.001 Kilograms = 1000 Milligrams =
0.035 Ounces 1 Cu Centimeter = 1,000 Cu Millimeters =
1 Kilogram = 1000 Grams = 2.2 Pounds 0.06 Cu Inches
1 Metric Ton = 1000 Kilograms = 1 Megagram = 1 Cu Meter = 1,000,000 Cu Centimeters =
1.1 Short Tons 35.31 Cu Feet
Liquid Measure Temperature
1 Milliliter = 0.001 Liters = 0.0338 Fluid Ounces 9/5 °C +32 = °F
1 Liter = 1000 Milliliters = 33.82 Fluid Ounces 5/9 (°F - 32) = °C
212° Fahrenheit is equivalent to 100° Celsius
90° Fahrenheit is equivalent to 32.2° Celsius
32° Fahrenheit is equivalent to 0° Celsius

APPROXIMATE CONVERSION FACTORS

To Change To Multiply By To Change To Multiply By
Inches Centimeters 2.540 Centimeters Inches 0.394
Feet Meters 0.305 Meters Feet 3.280
Yards Meters 0.914 Meters Yards 1.094
Miles Kilometers 1.609 Kilometers Miles 0.621
Sq Inches Sq Centimeters 6.451 Sq Centimeters Sq Inches 0.155
Sq Feet Sq Meters 0.093 Sq Meters Sq Feet 10.764
Sq Yards Sq Meters 0.836 Sq Meters Sq Yards 1.196
Sq Miles Sq Kilometers 2.590 Sq Kilometers Sq Miles 0.386
Acres Sq Hectometers 0.405 Sq Hectometers Acres 2.471
Cubic Feet Cubic Meters 0.028 Cubic Meters Cubic Feet 35.315
Cubic Yards Cubic Meters 0.765 Cubic Meters Cubic Yards 1.308
Fluid Ounces Milliliters 29.573 Milliliters Fluid Ounces 0.034
Pints Liters 0.473 Liters Pints 2.113
Quarts Liters 0.946 Liters Quarts 1.057
Gallons Liters 3.785 Liters Gallons 0.264
Ounces Grams 28.349 Grams Ounces 0.035
Pounds Kilograms 0.454 Kilograms Pounds 2.205
Short Tons Metric Tons 0.907 Metric Tons Short Tons 1.102
Pound-Feet Newton-Meters 1.356 Newton-Meters Pound-Feet 0.738
Pounds per Kilopascals 6.895 Kilopascals Pounds per 0.145
Sq Inch Sq Inch
Miles per Kilometers per 0.425 Kilometers per Miles per 2.354
Gallon Liter Liter Gallon
Miles per Kilometers per 1.609 Kilometers per Miles per 0.621
Hour Hour Hour Hour
PIN: 059011-000