TM 9-6650-221-35

DEPARTMENT OF THE ARMY TECHNICAL MANUAL

DS, GS, AND DEPOT MAINTENANCE MANUAL

INCLUDING REPAIR PARTS AND SPECIAL TOOL LISTS
FOR

PERISCOPE, TANK: XM47

6650-788-5464)

This copy is a reprint which includes current

pages from Changes 1 through 3.

HEADQUARTERS, DEPARTMENT OF THE ARMY

1966
 TM 9-6650-221-35
C3

}
CHANGE
HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 3 WASHINGTON, D.C., 7 August 1972

Direct Support, General Support, and Depot Maintenance

Manual Including Repair Parts and Special Tools List
PERISCOPE, TANK: M47
(6650-788-5464)

TM 9-6650-221-35, 21 April 1966, is changed as follows:

1. The new or changed material in this change is indicated by a vertical bar opposite the appendix title (Appendix B).

2. New or revised illustrations are indicated by a vertical bar adjacent to the identification number.

3. Remove old pages and insert new pages as indicated below:

Remove page Insert page

B-1 through B-8 B-1 through B-37

4. File this change sheet in front of the manual for reference purposes.

By Order of the Secretary of the Army:

BRUCE PALMER, JR.

General, United States Army
Official: Acting Chief of Staff
VERNE L. BOWERS
Major General, United States Army
The Adjutant General

Distribution:
To be distributed in accordance with DA Form 12-41 (qty rqr block No. 76) Direct and General Support
Maintenance Requirements for Periscope.
 TM 9-6650-221-35
C2

}
CHANGE
HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 2 WASHINGTON, D.C., 3 January 1972

Direct Support, General Support, and Depot Maintenance

Manual Including Repair Parts and Special Tools List
for
PERISCOPE, TANK: M47
(6650-788-5464)

TM 9-6650-221-35, 21 April 1966, is changed as follows:

1. Change XM551 Vehicle to read "M551 Vehicle" throughout the manual.

2. New or changed material is indicated by a vertical bar in the margin of the page. Revised illustrations are indicated by
a letter adjacent to the identification number.

3. Remove old pages and insert new pages as indicated below.

Remove pages Insert pages

6-1, 6-2 6-1, 6-2
6-5 through 6-8 6-5 through 6-8
6-13 through 6-16 6-13 through 6-16
6-19, 6-20 6-19, 6-20
B-5 through B-8 B-5 through B-8

4. File this change sheet in the front of the publication for reference purposes.

By Order of the Secretary of the Army:

W.C. WESTMORELAND
General, United States Army,
Official: Chief of Staff
VERNE L. BOWERS,
Major General, United States Army
The Adjutant General

Distribution:
To be distributed in accordance with DA Form 12-41 (qty rqr block no. 76) Direct and General Support
Maintenance requirements for Periscope.
 TM 9-6650-221-35
C1

}
CHANGE
HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 1 WASHINGTON, D.C., 28 September 1971

Direct Support, General Support, and Depot Maintenance Manual

Including Repair Parts and Special Tools List
For
PERISCOPE, TANK: M47
(6650-788-5464)

TM 9-6650-221-35, 21 April 1966, is changed as follows:

1. Change the title to read as shown.

2. Change Periscope XM47 to read, "Periscope M47" throughout the manual.
3. Remove old pages and insert new pages as indicated below.
4. New or changed material is indicated by a vertical bar in the margin of the page.
5. Added or revised illustrations are indicated by a letter adjacent to the WE number.

Remove pages Insert pages

1-1 through 1-5 1-1 through 1-5
4-1 4-1
5-1 through 5-4 5-1 through 5-4
B-3, B-4 B-3. B-4
B-7, B-8 B-7. B-8

6. File this change sheet in front of the publication for reference purposes.

By Order of the Secretary of the Army:

W.C. WESTMORELAND
General, United States Army,
Official: Chief of Staff
VERNE L. BOWERS,
Major General, United States Army
The Adjutant General

Distribution:
To be distributed in accordance with DA Form 12-41 (qty rqr Block No. 76). Direct/General Support requirements
for Periscope.
 TM 9-6650-221-35

}
TECHNICAL MANUAL
HEADQUARTERS
DEPARTMENT OF THE ARMY
No. 9-6650-221-35 WASHINGTON, D.C., 20313, 21 April 1966

PERISCOPE, TANK: XM47

(6650-906-7944)

Paragraph Page
CHAPTER 1. INTRODUCTION
Section I. General ................................................................................................................. 1-1 1-1
II. Description and data ............................................................................................. 1-5 1-5
CHAPTER 2. TOOLS AND EQUIPMENT................................................................................... 2-1 2-1
CHAPTER 3. INSPECTION
Section I. General ................................................................................................................. 3-1 3-1
II. Inspection in the using position............................................................................. 3-3 3-1
III. Shop inspection .................................................................................................... 3-8 3-2
CHAPTER 4. TROUBLESHOOTING
Section I. General ................................................................................................................. 4-1 4-1
II. Troubleshooting procedures ................................................................................. 4-3 4-1
CHAPTER 5. REPAIR
Section I. General ................................................................................................................. 5-1 5-1
II Repair ................................................................................................................... 5-6 5-1
CHAPTER 6 EQUIPMENT ISSUED WITH TANK PERISCOPE XM47
Section I. Description ........................................................................................................... 6-1 6-1
II. Repair of mount assembly 6650-906-7944........................................................... 6-3 6-5
III Repair of washer, pump, and reservoir assembly 8589793 ................................. 6-6 6-7
IV Repair of wiper assembly 650-906-7943 .............................................................. 6-10 6-10
CHAPTER 7. PROCESSING AND PACKAGING ....................................................................... 7-1 7-1
APPENDIX I. REFERENCES ..................................................................................................... A-1
II. REPAIR PARTS AND SPECIAL TOOL LISTS ..................................................... B-1
INDEX................................................................................................................................................. I-1

i
 C 1, TM 9-6650-221-35

CHAPTER 1
INTRODUCTION

Section I. GENERAL

1-1. Scope AMSWE-MAF W3100, Philadelphia, Pa. 19137 on DA

Form 2028.
a. This publication contains instructions for the
repair of periscope, tank M47, 6650-788-5464, and 1-3. Maintenance Allocation and Parts
associated equipment, by direct support (DS), general The maintenance allocation chart in TM 9-2350230-12
support (GS), and depot shops. and repair parts and tools listed in appendix II allocates
b. These instructions are used in conjunction maintenance responsibilities.
with and are supplementary to those in the operators
and organizational maintenance manual for armored 1-4. Forms, Records, and Reports
reconnaissance-airborne assault vehicle, M551.
Instructions for operation, lubrication, and operators a. Authorized Forms. The forms are listed in
maintenance (including installation and removal DA Pamphlet 310-2 and TM 38-750.
procedures, as well as tests and adjustments after b. Report of Accidents. The necessary reports
installation) are contained in TM 92350-230-12. It may are prescribed in AR 385-40.
be necessary to refer to this manual for complete c. Equipment Improvement Recommendations
procedures. (EIR). Use the Equipment Improvement
Recommendation section of DA Form 2407.
1-2. Comments
Report errors, omissions, and recommendations directly
to the Commanding Officer, Frankford, Arsenal, ATTN:

Section II. DESCRIPTION AND DATA

1-5. Description c. Head Assembly 6650-906-7941.

(1) Head assembly 6650-906-7941
a. General. Periscope M47 (figs. 1-1 and 1-2) contains prism 8599693 (fig. 1-2) which is mounted in
is a unity-power daylight periscope that provides a 50- the head and sealed against water penetration. The
degree horizontal and 14-degree vertical field-of-view. bottom the head is open but is provided with a gasket for
Periscope M47 is used in conjunction with the M551 sealing when joined with body assembly 10613610.
Vehicle and consists of head assembly 6650-9067941 (2) Two mounting holes (fig. 1-2) are
and body assembly 10513620. A functional description provided on the head for engaging the plungers of mount
and operating instruction for periscope are provided in assembly 6650-906-7944. Mount assembly 6650906-
TM 92350-230-12. 7944 is required for assembling head assembly 6650-
b. Optical Scheme. Two prisms and an optical 906-7941 to body assembly 10513620.
instrument window (fig. 1-3) comprise the optical d. Body Assembly 10513620.
components of periscope XM47. Prism 8599693 is (1) Body assembly 10513620 is a sealed
located in head assembly 6650-906-7941 and deflects a unit, filled with nitrogen gas, that receives the reflected
forward line of sight through optical instrument window line-of-sight from the head assembly 6650-9067941.
6650-902-9741 of body assembly 10613620 to prism Optical instrument window 6650-902-9741 (fig. 1-1) is
8599694. Prism 8599694 displays the field-of-view to enclosed in a sealed frame and is mounted on the top of
the operator. the body.

1-1
 C 1, TM 9-6650-221-35

Figure 1-1. Periscope, tank, M47, 6650-788-5464.

1-2
 C 1, TM 9-6650-221-35

Figure 1-2. Periscope, tank, M47, 6650-788-5464.

Prism 8599694 is located at the bottom of the body and plug 4730-684-4401 and gasket 533083 9573 (fig. 1-2)
is also sealed. are located on the rear of the body and are removed for
(2) Valve assembly 8201751 (fig. 1-1), purging operations.
located on the side of the body, is used for purging and
charging the body with nitrogen gas. Machine thread

1-3
 C 1, TM 9-6650-221-35

Figure 1-3. Periscope M47 - optical diagram.

1-4
 C 1, TM 9-6650-221-35

(3) Two catches (fig. 1-1 and 1-2), Power ......................................................... 1.00X
engage corresponding strikes on mount assembly 6650- Field-of-view............................................... 50 horizontal
9067944 when mounting body assembly 10513620. The 14 vertical
identification plate (fig. 1-2) for Periscope M47 is
mounted on body assembly 10513620 and contains the b. Weight.
serial number of the unit. Head assembly .......................................... 5.5 lb
Body assembly........................................... 4.25 lb
1-6. Data
c. Size
a. Optical Characteristics. Width .......................................................... 10.125 in.
Overall height ............................................. 9.625 in.
Maximum depth ......................................... 3.625 in.

1-5
 CHAPTER 2

TOOLS AND EQUIPMENT

2-1. Common Tools and Equipment which are necessary to perform the operations described
Standard and commonly used tools and in this manual. Special tool sets of a general nature are
equipment having general application to this materiel are authorized by TA and TOE. Special tools peculiar to this
authorized for issue by TA and TOE. equipment are authorized in appendix II.

2-2. Special Tools and Equipment

Table 2-1 lists the special tools and equipment

Table 2-1. Special Tools and Equipment

References
Nomenclature Federal stock no. Part no. Fig. Para Use
ADAPTER, 4931-507-5453 7680682 5-3 5-11 Connects regulator 1240-558-
NITROGEN 0922 to nitrogen tank.
FILLING:
HOSE, ASSEMBLY: 4931-508-5546 8572413 5-3 5-11 Used with test gage assembly
4931-546-9773
HOSE ASSEMBLY, 49-561-0713 8572414 5-3 5-11 Connects regulator 1240-558-
RUBBER: 0922 to periscope XM47.
REGULATOR, 1240-558-0922 5580922 5-3 5-11 Used to control the flow of
HELIUM nitrogen during purging
PRESSURE: and charging operations.
SEALING 4931-508-5428 6721501 Used for injecting non-curing
COMPOUND sealing compound Type I,
GUN, class I, MIL-S-11030
HYDRAULIC:
INJECTION
TANK, NITROGEN: 6830-264-9086 ---------- 5-3 5-11 Container with dry nitrogen gas
used in purging and
charging operations.
TEST, GAGE 4931-546-9773 8572412 5-3 5-11 Used with hose assembly
4931-508-5546 to check
internal pressure during
purging and charging
operations.

2-1
 CHAPTER 3

INSPECTION

Section I. GENERAL

Inspection is performed primarily, (1) to determine

3-1. Scope completeness, (2) to determine the nature of
unserviceability,. (3) to determine the work, repair parts,
This chapter sets forth inspection of periscope and supplies required to return the materiel to
XM47 in the using position and in maintenance shops. serviceability, (4) to ensure that work in process is being
performed properly, and (5) to ensure that completed
3-2. Purpose work complies fully with serviceability standards.

Section II. INSPECTION IN THE USING POSITION

3-3. General c. Inspect all sealed portions of the materiel to

determine whether sealing is complete.
In general, periscope XM47 will be considered
serviceable if it is complete and all deficiencies have d. Inspect identification plate for legibility.
been corrected ensuring operation in accordance with
serviceability standards. e. Inspect for bare spots or damaged finish
which expose metal surfaces and lead to corrosion.
3-4. Using Position
f. The two catches on the body assembly
Inspection in the using position refers to the must operate smoothly without binding or rough motion
inspection performed by maintenance personnel when and must properly engage the strikes on the mount
periscope is mounted in position on the XM551 vehicle. assembly.
Inspection of periscope removed from the end item is set
forth in paragraphs 3-8 through 3-11. g. The equipment must be clean and free from
dirt and grit.
3-5. Modification Work Orders (MWO)
h. Refer to the Basic Issue Items List in TM 9-
All applicable modification work orders will be 2350-230-12 and check for completeness of repair parts,
applied. DA Pamphlet 310-4 contains the MWO index tools, and equipment.
and equipment records DA Form 2408-5 or DA Form
2409 list MWOs applied. 3-7. Inspection of Optical Components

3-6. General Inspection a. The prism on the body assembly must be

free from scratches, pits, dirt, and chips that will interfere
a. Note general appearance as an indication with or affect the optical performance of the instrument.
of the condition of the materiel and the type of treatment
it has received. b. When sighting through the instrument, the
field-of-view must be clear with no signs of fogging.
b. Check exterior of materiel and accessible
parts for dented surfaces, bent or broken parts, missing
parts, moisture or corrosion, and other evidence of
damage or misuse which might indicate a need for
repair.

3-1
 Section III. SHOP INSPECTION

3-8. General 3-11. Inspection of Optical Components

This section sets forth the procedure to be a. Head Assembly. When looking through the
followed by maintenance shops in performing inspection head assembly of the periscope there shall be no
of periscope XM47 when removed from the end item and objectional dirt smears, scratches, digs, condensate or
turned in to the shop for repair. fungus growth. Chips and fractures are permitted
provided they are stoned or ground and do not extend
3-9. Initial Inspection more than 1/4-inch beyond the clear aperture. In all
cases prime emphasis should be placed on performance
The inspection procedures outlined in of the periscope rather than the optical appearance,
paragraphs 3-3 through 3-7 should be followed when unless the latter definitely indicates poor workmanship.
periscope XM47 is initially received in the shop.
b. Body Assembly. When looking directly
3-10. Sealing through the viewing prism of the body assembly, all
optical surfaces must be free from dirt, digs, condensate
Determine integrity of all seals with soap and or fungus growth. Scratches are acceptable provided
water solution as specified in 5-11a(10). they are ground or stoned. Cement separations must
not extend more than 1/4-inch from edge of aperture.

3-2
 C 1, TM 9-6650-221-35

CHAPTER 4
TROUBLESHOOTING

Section I. GENERAL

4-1. Purpose Caution: Operation of materiel without a

preliminary examination can cause further damage
Troubleshooting is a systematic isolation and remedy of to a faulty component. Exercise care during
malfunction and defective components by means of troubleshooting, to avoid further damage.
symptoms and tests. Close adherence to the procedure
covered herein will materially reduce the time required to 4-2. General
locate trouble and restore the equipment to normal
operation. For troubleshooting procedures performed by
organizational maintenance, refer to TM 9-2350230-12.

Table 4-1. Troubleshooting

Malfunction Probable cause Corrective action Lowest

maintenanc
e category
1. Poor visibility Chipped, scratched or otherwise Replace optical instrument Depot
damaged optical instrument window (para 5-7).
window 6650-902-9741 (3, fig. 5-
2) in body assembly 10513620.
2. Pressure cannot be a. Defective valve assembly a. Disassemble and repair DS
maintained in body 8201751 (7. fig. 5-2). vale assembly (para 5-9)
assembly 10513620
b. Faulty machine thread plug b. Replace machine thread DS
5365684-4401 (8. fig. 5-2) or plug and/or gasket i
gasket 5330-683-9573 (19 para 5-10.
fig. 5-2).
c. Faulty sealing around optical Remove. replace. and reseal DS
instrument window 6650-902- optical instrument
9741 (3. fig. 5-2). window (para 5-7).
3. Head assembly does not Faulty catch(es) 1240-191-9213 (6, Replace catch(es) para 5-8). DS
attach securely to mount fig. 5-2).
assembly 6650906-7944.

Section II. TROUBLESHOOTING PROCEDURES

4-3. General 4-4. Troubleshooting

The troubleshooting procedure described in this section Table 4-1 describes the troubleshooting procedure.
is one of determining the cause of the malfunction and
taking the necessary action.

4-1
 C 1, TM 9-6650-221-35

CHAPTER 5
REPAIR

Section I. GENERAL

5-1. Scope 5-3. General Maintenance Procedures

This chapter contains instructions for the repair of TM 9-254 presents general maintenance procedures that
periscope M47. are most often required in repairing fire control materiel.

Note. This manual contains exploded-view 5-4. Rescinded

illustrations which depict the complete disassembly of
the materiel. This should not be construed as 5-5. Cleaning
authority to disassemble the materiel beyond that
required to perform operations authorized on the MAC Refer to TM 9-208-1 for procedures most often required in
or to replace parts other than those authorized in the cleaning fire control materiel.
applicable columns in appendix II.

5-2. Parts Replacement

In subsequent repair paragraphs, replacement of

authorized parts damaged beyond repair is understood.

Section II. REPAIR

5-6. General d. Repair and Reclamation. A window having

chips or fractures may be reclaimed by stoning or grinding
The paragraphs that follow set forth the procedures to if the chips and fractures do not extend 4-inch beyond the
replace authorized repair parts and to perform purely clear aperture. Refer to TM 9-254 for instructions on
maintenance operations not involving repair parts stoning and grinding optical components.
replacement. Refer to Appendix II for a list of authorized e. Assembly. To assemble the window, frame,
repair parts. and housing, proceed as follows:
Note. The key numbers shown in parentheses
5-7. Replacement of Optical Instrument Window refer to figure 5-2.
6650-902-9741
(1) Apply a bead of sealing compound, MIL-
a. Removal. Disassemble items 1, 2, and 3 (fig. S11031, 8030-275-8110 to the frame (2) and install
5-2). window (3) into position.
b. Inspection. Inspect the general condition of (2) Clean any excess sealing compound
the frame and housing to ensure that neither has been from the window before installing the frame.
dented, bent or otherwise deformed. Inspect the optical (3) Install frame (2) on housing (17) and
instrument window for scratches, chips, or other damage secure with eight screws (1), applying a small amount of
that would impair its optical performance. sealing compound, MIL-S-11031, to threads and under the
c. Cleaning. Scrape the surface of the frame head of each screw.
and the housing to remove all traces of the old sealing
compound and then wipe the complete surface with a cloth 5-8. Replacement of Catch 1240-191-9213
moistened with dry cleaning solvent, 6850-336-8170.
a. Removal. Disassemble items, 4, 5, and 6
Caution: Take particular care during any scraping (fig. 5-2).
operations to avoid nicking or gouging the surface of b. Inspection.
the frame or housing. (1) Inspect the hinge pin and the latching
member for proper alinement.

5-1
 C 1, TM 9-6650-221-35

Figure 5-1. Head assembly 6650-906-7941 - exploded view.

1-Screw, machine no. 2-56 UNC-2A, 1/8 Ig (8) 9-Gasket: 5330-683-9573

MS51959-1 10-Screw, machine, no. 2-56 UNC-2A. 1/8 Ig (2)
2-Frame 10513623 MS51959-1
3-Window, optical instrument: 6650-902-9741 11-Clip (2) 10513622-1
4-Screw, machine, no. 6-32 NC, 5/16 Ig (4) 5305-054-665 12-Screw, machine, no. 2-56 UNC-2A. 1/8 lg (2)
5-Washer, lock; helical split, no. 6 (4) 5310-043-1754 MS51959-1
6-Catch: (2) 1240-191-9213 13-Clip 10513629
7-Valve assembly 8201751 14-Prism 8599694
A-Cap, tire valve 2640-507-9260 15-Screw, machine, pan hd cross recess no. 2 NC, 1/8 (2)
B-Valve, inside air check: 1240-535-7706 MS35216-1
C-Stem 8201752 16-Plate, identification 10513621
8-Plug, machine thread: 5365-684-4401 17-Housing 10513617

Figure 5-2. Body assembly 10513620 - exploded view.

5-2
 C 1, TM 9-6650-221-35

Figure 5-2. - Continued.

5-3
 C 1, TM 9-6650-221-35

(2) Inspect for wear on the hinge pin and/or 5-11. Test and Adjustment
distortion of the latching member. a. Purging and Charging Body Assembly 1051-
c. Installation. Assemble in sequence, items 6, 5, 3599. Remove cap plug (7A fig. 5-2), plug and gasket
and 4 (fig. 5-2). (9). Purge and charge body assembly (fig. 5-3).
Note. The key numbers shown in parentheses
5-9. Repair of Valve Assembly 8201751 refer to figure 5-3 unless otherwise indicated.
a. Removal. Remove item 7 (fig. 5-2). (1) Remove threaded protective cover from
b. Disassembly. Disassemble in legend sequence. the valve outlet of the dry nitrogen tank (1) and
c. Inspection. Inspect the parts of the valve momentarily open the valve to clear foreign matter from
assembly for obvious wear, deterioration or other signs the valve seat.
of unserviceability. Pay particular attention to the (2) Check the nitrogen filling adapter (2) for
condition of the valve and insure that it operates cleanliness and proper sealing of gasket. Attach adapter
smoothly, is free of corrosion, and the rubber seats are to cylinder valve, and then attach helium pressure
not worn. Inspect the valve stem and cap for worn regulator (3) to adapter.
threads or burrs on the threads. (3) Remove cap from the low pressure port of
d. Assembly. Assemble items in reverse legend the regulator; connect hose assembly (4) to low pressure
sequence (7, fig. 5-2). port of the regulator.
e. Installation. Install item 7 applying a small (4) Rotate valve of pressure regulator fully
amount of sealing compound, MIL-S-10031, to the counterclockwise to close regulator.
threads of the stem. (5) Open valve of nitrogen tank slowly until
cylinder pressure is registered on high pressure gage;
5-10. Replacement of Machine Thread Plug 5365- indication shall not be less than 100 psi.
684-4401 and Gasket 5330-683-9573 Note. If pressure indicated is less than 100 psi,
a. Removal. Remove items 8 and 9 (fig. 5-2). obtain and use a replacement tank.
b. Inspection. Inspect the general condition of the (6) Slowly rotate valve of pressure regulator
gasket and the machine thread plug. Check the gasket clockwise until approximately 5 psi is registered on the
for wear, cuts, breaks, or other signs of unserviceability low pressure gage. Check free end of hose assembly
that would result in leakage. Inspect the threads of the for free flow of nitrogen for approximately I/2-minute;
machine thread plug for excessive wear or burrs. then, rotate valve of pressure regulator fully
c. Installation. Install items 9 and 8 (fig. 5-2). counterclockwise to stop the flow of nitrogen.
(7) Connect free end of hose assembly to
valve of body assembly.

5-4
 Figure 5-3. Typical setup for purging and charging periscope XM47.

(8) Slowly rotate valve of the pressure b. Final Test.

regulator clockwise until low pressure gage indicates 5 (1) Rotate valve of pressure regulator fully
psi. Allow the nitrogen to flush the assembly for 5 counterclockwise to stop the flow of nitrogen. Close the
minutes. valve of the nitrogen cylinder and remove the hose from
(9) Install gasket (9, fig. 5-2) and machine the valve of the charged assembly.
thread plug (8) securely in housing assembly. (2) Connect hose assembly (5) to dial
(10) Apply a water and soap solution around indicating pressure gage (6).
optical elements, the valve, the plug and check for leaks.
(11) .Reduce the pressure to 1 psi by slowly
rotating valve of the pressure regulator counterclockwise.
Charge for two minutes.

5-5
 (3) Connect the free end of the hose with gage. The indicated pressure should be 0.5 to 1.0 psi.
pressure gage to the valve of the charged assembly and After approximately 30 minutes, the internal pressure
check and record the pressure indicated on the test should not drop more than 0.1 psi.

5-6
 C 2, TM 9-6650-221-35

CHAPTER 6
EQUIPMENT ISSUED WITH TANK PERISCOPE XM47

Section I. DESCRIPTION

6-1. General serviced by the one washer, pump, and reservoir

Equipment issued with periscope M47 includes mount assembly.
assembly 6650-906-7944, seal assembly 10513439, a. The mount assemblies are secured to the inside
washer, pump, and reservoir assembly 8589793 and of the vehicle turret beneath a cutout provided for
wiper assembly 6650-906-7943. The relationship of this mounting the periscope.
equipment on the M551 vehicle is shown in figure 6-1. b. The seal assemblies are mounted on the outside
of the turret and provides protection against the entry of
6-2. Specific water and other foreign matter.
There are three mount assemblies, seal assemblies, and c. The washer, pump and reservoir assembly is
wiper assemblies, and one washer pump, and reservoir mounted completely inside the turret and serves the
assembly provided for each M551 vehicle. Each three wiper assemblies through tubing from the reservoir.
combination of mount, seal, and wiper assembly d. The wiper assemblies are electrically operated
accommodates one periscope. All three periscopes are and drive wiper blades through 160 of sweep across the
exposed optical surfaces.

6-1
 C 2, TM 9-6650-221-35

Figure 6-1. Equipment issued with periscope M47.

6-3
Figure 6-2. Wiper assembly 6650-906-7943 - gearing diagram.

6-3
Figure 6-3. Wiper assembly 6650-906-7943-wiring diagram.

6-4
 C 2, TM 9-6650-221-35

Figure 6-4. Wiper assembly 6650-906-7943-schematic diagram.

Section II. REPAIR OF MOUNT ASSEMBLY 6650-906-7944

6-3. Inspection (1) Inspect plunger on each side of mount for

a. General. ease of operation; there should be no burrs or
(1) Note general appearance as an indication obstruction.
of the condition of the materiel and the type of treatment (2) Inspect the junction of mount assembly
it has received. and turret for bends, cracks, or breaks.
(2) Check exterior of materiel and accessible (3) Determine that strikes properly engage
parts for dents or breaks, missing parts or moisture or catches on head assembly.
corrosion.
(3) The equipment must be clean and free 6-4. Troubleshooting
from dirt. Table 6-1 lists troubleshooting procedures for mount
(4) Refer to Basic Issue Items List in TM 9- assembly 6650-906-7944. Refer to TM 9-2350-230-12
2350-230-12 and check for completeness of repair parts,
tools, and equipment.
b. Specific.

6-5
 C 2, TM 9-6650-221-35

for operators and organizational level troubleshooting procedures for the mount assembly.

Table 6-1. Mount Assembly Troubleshooting

Lowest
Malfunction Probable cause Corrective action maintenance
category
1. Plunger does not operate smoothly a. Plunger 10513473 needs lubricating a. Disassemble, clean, and lub- DS
ricate the plunger (para 6-5).
b. Defective helical compression b. Replace helical compression DS
spring 5340-912-5826 (para 6-5). Spring (para 6-5).
2. Body assembly does not securely Bent strike 10513474 (3, fig. 6-5) Replace strike. DS
fasten to mount

6-5. Replacement of Helical Compression Spring compression spring should be free from breaks or other
5340-912-5826 damage.
c. Cleaning. Clean the plunger and mounting hole
a. Disassembly. Disassemble items 1 through 5 with solvent in accordance with TM 9-208-1 to remove all
(fig. 6-5).
b. Inspection. Inspect the general condition of the
disassembled parts. The plunger should fit firmly but be
free to move smoothly in the mounting hole. The helical

1 Screw, machine: no. 6/0-40 UNF, 5/16 lg (8) 4 Spring, helical compression: (2) 5340-912-5826
5305-057-0523 5 Plunger (2) 10513473
2 Washer, lock: helical split, no. 6 (8) 5310-933-6395 6 Mount 10513630
3 Strike (2) 10513474

Figure 6-5. Mount assembly 6650-906-7944 - exploded view.

6-6
 C 2, TM 9-6650-221-35

traces of lubricant. Wipe the mount down with a cloth f. Testing. Test the assembled mount assembly
moistened with dry cleaning solvent, 6850-336-8170. by inserting it on a head assembly and checking for
d. Lubrication. Lubricate the plunger and mounting proper engagement of the plunger on each side.
hole with a light coating of aircraft and instruction grease,
MIL-G-23827, 9150-261-8298, prior to assembly.
e. Assembly. Assemble items in sequence 5
through 1 (fig. 6-5).

Section III. REPAIR OF WASHER, PUMP, AND

RESERVOIR ASSEMBLY 8589793

6-6. Inspection to the valve to ensure that the tubing is not split and that
a. General. each tube is securely fitted over its corresponding fitting.
(1) Note general appearance as an indication Check for proper and secure mounting.
of the condition of the materiel and the type of treatment (4) Tubing and tees. Inspect all tubing for
it has received. breaks, splits, or other evidence of damage that would
(2) Check exterior of materiel and accessible render it unserviceable. All connections should be
parts for dents, leaks or missing parts or corrosion. secure and tight over the tees and component fittings.
(3) The equipment must be clean and free
from dirt. 6-7. Performance Test
(4) Refer to Basic Issue Items List in TM 9- a. Check to ensure that the reservoir is filled with
2350-230-12 and check for completeness of repair parts, liquid.
tools and equipment. b. Depress the bellows to activate the washer
b. Specific. pump and note that liquid is dispersed from the tubing of
(1) Reservoir assembly 1260-944-5128. all washers.
Inspect the reservoir for leaks at the outlet tube and for c. There should be no erratic action from any of the
proper fitting of tubing over the outlet tube. Check the washers and the pump should cycle each time it is
cap for proper fit on the filling port and insure that the depressed.
cap has not been bent or otherwise distorted. Inspect
the reservoir for secure mounting and ensure that all 6-8. Troubleshooting
mounting hardware is used and in the proper place. Table 6-2 lists troubleshooting procedures for washer,
(2) Washer pump 1260-944-5127. Inspect pump, and reservoir assembly 8589793. Refer to TM 9-
the washer pump for leaks. Check the tubing connection 2350-230-12 for operators and organizational level
to the pump to ensure that the tubing is not split and that troubleshooting procedures for the washer, pump, and
it is secure over each fitting. Check the washer pump for reservoir assembly.
proper and secure mounting.
(3) Check valve assembly 8589808. Inspect
the check valve for leaks. Check the tubing connections

6-7
 C 2, TM 9-6650-221-35

Table 6-2. Washer, Pump, and Reservoir Assembly Troubleshooting

Lowest
Malfunction Probable cause Corrective action maintenance
category
1. Cleaning fluid is not distributed a. Tubing defective, blocked or not a. Check tubing for proper connection to DS
to individual washers or any of properly connected between reservoir fitting and check valve
the washers when washer reservoir and malfunctioning assembly fitting. Tighten either
pump is activated. washer(s). connection if necessary. Inspect
tubing for holes or a break. Replace
tubing (para 6-9).
b. Stopped-up reservoir outlet b. Disconnect tubing from reservoir DS
outlet fitting and observe that liquid
flows from the reservoir. Replace
reservoir assembly (para 6-9).
c. Defective washer pump 1260- c. Disconnect tubing 8589761-14 from DS
944-5127 (18, fig. 6-6). check valve assembly 8589809 and
tubing 8589761-12 from tee 4730-
905-9796. Insert tubing 8589761-14
into a container of water by
depressing the bellows. Water
should flow from tubing 8589761-12
when the pump is operated. Replace
pump (para 6-9).
2. Bellows must be operated a. Defective check valve a. Operate bellows of pump several Depot
several times to obtain output assembly 8589809 (15, fig. 6- times until liquid is being distributed
from washers 6). by washers. Disconnect tubing from
check valve and inspect check valve
fitting for leakage. Replace check
valve assembly.
b. Defective washer pump 1260- b. Proceed as specified in 1c above. DS
944-5127 (18, fig. 6-6).

1 Cap 8589803 14 Clip 8589915

2 Tubing, rubber 8589761-16 15 Check valve assembly 8589808
3 Tubing, rubber 8589761-14 16 Screw, cap, socket head: 1/4-20 UNF-3A, lg
4 Tubing, rubber 8589761-12 5305-052-9329
5 Tubing, rubber 8589761-10 17 Washer; lock: no. 1/4, 5310-043-5862
6 Tee, hose: 4730-905-9796 18 Pump, washer 6650-944-5127
7 Tubing, rubber 8589761-11 19 Nut, self-locking, 1/4-20 UNF-3A MSS51968-2
8 Tubing, rubber 8589761-9 20 Washer, lock, no. 1/4 MS35337-82
9 Tee, pipe: 4730-905-9066 21 Screw, cap, socket head: 1/4-20 UNF-3A, Ig
10 Tubing, rubber 8589761-3 5305-958-7667
11 Screw, cap, socket head: -20 UNF-3A, Ig, 22 Washer, flat, no. 10 (2) MS15795-810
5305-052-9329 23 Bracket 10512002
12 Washer, lock, no. , 5310-582-5677 24 Reservoir 10516814
13 Washer, flat, no. 10, 5310-933-8121

Figure 6-6. - Continued.

6-8
Figure 6-6. Washer, pump, and reservoir assembly 8589793 - exploded view.

6-9
6-9. Repair of Washer, Pump and Reservoir (2) Inspect all rubber tubing for splits, breaks,
Assembly 8589793 or deterioration. Inspect the tees for breaks or dirt in the
a. Removal. Disassemble items in legend ports.
sequence (fig. 6-6). (3) Inspect the exterior of the pump checking
b. Inspection. the bellows for excessive wear, the outlet fitting for
(1) Inspect the cap for dents, wear, or other damage, and the body for bent mounting feet.
signs of unserviceability. Inspect the seal inside the cap c. Installation. Assemble items in reverse legend
for excessive wear that will cause leakage. sequence (fig. 6-6).

Section IV. REPAIR OF WIPER ASSEMBLY 6650-906-7943

6-10. Inspection (5) Check the condition of the motor wiring to

a. General. ensure that the wires are not bare, loose, or broken.
(1) Note general appearance as an indication (6) Check the receptacle for bent or broken
of the condition of the materiel and the type of treatment pins and for secure mounting to the cover assembly.
it has received.
(2) The equipment must be clean and free 6-11. Performance Test
from dirt and grit.
(3) Refer to the Basic Issue Items List in TM a. Operate the assembly to insure that the blade
9-2350-230-12 and check for completeness of repair operates through a full stroke of 160 and that it zeroes
parts, tools and equipment. (returns to the end of the stroke) when shut off.
b. Specific. b. Check to insure that the blades do not smear or
(1) Inspect the condition of the rubber on the scrape the prism.
wiper blade, checking for cracks, breaks, or other signs c. Insure that the washer output properly disperses
of deterioration. cleaning fluid to the prism.
(2) Ensure that the wiper blade assembly is
securely mounted on the housing drive shaft. 6-12. Troubleshooting
(3) Check the spring tension of the arm
assembly to. ensure that the wiper blade is properly Table 6-3 lists troubleshooting procedures for -wiper
pressed against the prism. assembly 6650-906-7943. Refer to TM 9-2350-230-12
(4) Inspect the housings and cover assembly for operator's and organizational level troubleshooting
for cracks, breaks, or other faulty conditions. procedures for the wiper assembly.

Table 6-3. Wiper Assembly Troubleshooting

Lowest
Malfunction Probable cause Corrective action maintenance
category
1. Wiper smears prism Defective periscope wiper blade Replace blade (para 6-13). DS
6650-924-5876 (1, fig. 6-8).

6-10
 Table 6-3. Wiper Assembly Troubleshooting - Continued

Lowest
Malfunction Probable cause Corrective action maintenance
category
2. Wiper motion rough or a. Defective ball bearing in erratic gear a. Inspect ball bearing and make DS
train. necessary replacement (para 6-
14).
b. Defective gear in gear train. b. Inspect components of the gear Depot
train and make any needed
replacement.
c. Clutch assembly 10516819(7, fig. 6- c. Tighten screw (1, fig. 6-13) to DS
12) loose on motor shaft. tighten clutch assembly on shaft.
3. Wiper blade fails to zero a. Faulty actuator 6650-904-5877 (4, a. Replace actuator (para 6-15). DS
fig. 6-12).
b. Faulty sensitive switch5930-583- b. Replace sensitive switch(para 6- DS
6582, (5, fig..6-12). 16).
4. Wiper motors does not a. Faulty semiconductor de- vice 5960- a. Replace semiconductor device DS
operate 883-4798 (6, fig. 6-12). (para 6-17).
b. Faulty gear case motor3010-906- b. Replace gear case motor(para DS
6317 (15, fig. 6-12). 6-19).
c Faulty connection or pin on electrical c. Check connections to connector DS
receptacle connector 5935-881- and pins for damage. Replace
7775. connector(para 6-18).

6-13. Replacement of Wiper Blade Assembly 6650- teeth, excessive wear, or burrs. Check the fit of the
924-5875 bearing and gears on the shaft for excessive side play.
c. Installation.
a. Removal. Disassemble items 1 and 2 (fig. 6-7). (1) Assemble in sequence items 14 through 1
b. Inspection. Inspect the wiper blade for (fig. 6-10).
deteriorated rubber, cuts, or gouges. Check to ensure (2) Apply a light coating of aircraft and
that the spring of the arm assembly is operable and that instrument grease. MIL-G-23827 9150-261-8298, to the
it exerts force against the wiper blade. teeth of each of the gears.
c. Installation. Assemble in sequence items 2 and (3) Apply a small amount of instrument
1 (fig. 6-7). lubricating oil, MIL-L-6085 9150-223-4129, to each of the
ball bearings.
6-14. Replacement of Ball Bearings 8589768 (4) Assemble in sequence items 6 through 1
(fig. 6-7).
a. Disassembly.
(1) Disassemble items 1 through 6 (fig. 6-7). 6-15. Replacement of Actuator 6650-924-5877
(2) Disassemble items 1 through 14 (fig. 6-
10). a. Removal.
b. Inspection. Inspect the condition of each of the (1) Disassemble items 7 through 10 (fig.6-7).
ball bearings for wear, damage, or other signs of
unserviceability. Check each of the gears for missing

6-11
Figure 6-7. Wiper assembly 10513436 - partial exploded view.

6-12
 C 2, TM 9-6650-221-35

1 Setscrew: no. 4 UNF-3A, 1/8 Ig 5305851-2287 8 Washer, lock: no. 6 (4) 5310-043-1754
2 Wiper blade assembly: 6650-924-5875 9 Screw, machine, no. 6, pan hd cross recess (2)
3 Screw, machine, no. 2 UNC-2A, 3/16 Ig MS51959-2 MS51957-31
4 Housing assembly 8589901 10 Washer, lock no. 6 (2) MS35337-31
5 Screw, machine, no. 2 UNC-2A, 1/4 Ig (5) 11 Housing assembly 8589875
MS51959-3 12 Cover assembly 10516820
6 Support assembly 10513487
7 Screw, machine, No. 6 UNC-2A, 1 /2 Ig (3)
MS51957-36

Figure 6-7. - Continued.

(2) Disassemble items 1 through 5 (fig. 6-12).

b. Inspection. Inspect the actuator for any
distortion that would prevent correct mounting of the
actuator for tripping of the sensitive switch.
c. Installation.
(1) Assemble, in sequence, items 5 through 1
(fig. 6-12).
(2) Assemble, in sequence, items 10 through
7 (fig. 6-7).

6-16. Replacement of Sensitive Switch 5930-583-

6582

a. Removal.
(1) Disassemble items 7 through 10 (fig. 6-7).
(2) Disassemble items 1 through 5 (fig. 6-12).
b. Inspection. Depress the switch plunger and
observe that it operates smoothly. Inspect the case for
cracks, broken terminals, or damage that may render it
unserviceable.
c. Installation.
(1) Assemble, in sequence, items 5 through 1
(fig. 6-12).
(2) Assemble, in sequence, items 10 through
7 (fig. 6-7).

6-17. Replacement of Semiconductor Device 5945-

400-5256

a. Removal.
(1) Disassemble items 7 through 10 (fig. 6-7).
(2) Unsolder and remove item 6 (fig. 6-12).

Figure 6-8. Wiper blade assembly 6650-924-5875 -

exploded view.

6-13
 C 2, TM 9-6650-221-35

Figure 6-9. Housing assembly 8589901 - exploded view.

b. Installation. 6-18. Replacement of Electrical Receptacle

(1) Install item 6 (fig. 6-12) by soldering, Connector 5935-881-7775
carefully noting the polarity.
a. Removal.
Note. Refer to the wiring diagram (fig. 6-3) for (1) Disassemble items 7 through 10 (fig. 6-7).
determining the correct polarity of the (2) Unsolder the wires from the connector,
semiconductor device. item 18 (fig. 6-12).
(3) Disassemble items 16 through 18 (fig. 6-
(2) Assemble in sequence, items 10 through 7 12).
(fig. 6-7). b. Inspection. Inspect the connector for bent or
broken pins, cracked insulation, and defective threads.
c. Installation.

6-14
 C 2, TM 9-6650-221-35

Figure 6-10. Support assembly 105134S7 - exploded view.

6-15
 C 2, TM 9-6650-221-35

Figure 6-11. Housing assembly 85889875 - exploded view.

6-16
 (1) Assemble, in sequence, items 18 through (3) Disassemble items 7, 12, 13, 14, 15 (fig.
16 (fig. 6-12). 6-12).
(2) Connect the wiring to the connector in b. Inspection. Inspect the motor for exterior
accordance with the wiring diagram (fig. 6-3). damage, burned, broken, or bare wires, and a bent or
(3) Assemble, in sequence, items 10 broken shaft. Inspect the radio-suppression filter for
through 7 (fig. 6-7). similar exterior damage.
c. Installation.
6-19. Replacement of Gear Case Motor 3010-906- (1) Assemble, in sequence, items 15, 14, 13,
6317 12 and 7 (fig. 6-12).
(2) Attach and solder the two wires to the
a. Removal. terminals of the radio-suppression filter, item 12 (fig. 6-
(1) Disassemble items 7 through 10 (fig. 6-7). 12) in accordance with the wiring diagram (fig. 6-3).
(2) Unsolder and disconnect the two wires (3) Assemble, in sequence, items 10 through
from the noise-suppression filter, item 12 (fig. 6-12). 7 (fig. 6-7).

6-17
Figure 6-12. Cover assembly 10516820.

6-18
 C 2, TM 9-6650-221-35

1 Screw, machine: no. 2 UNC-2A, 5/8 Ig (2) 12 Noise suppression filter (vendors item furnished with item
5305-054-5642 15)
2 Nut: no. 2 NC-2B (2) 5310-938-2013 13 Screw, machine: no. 6-32 UNC-2A, 5/ 16 Ig (4)
3 Washer, lock: no. 5/8 (2) 5310-543- -0.54-6651
4 Actuator: 6650-924-5877 14 Washer, lock: no. 2 (4) 5310-043-1754
5 Switch, sensitive: 5930-583-6682 15 Motor, gear case: 3010-906-6317
6 Semiconductor device: diode 5945-400-5256 16 Screw, machine: no. 4-40 UNC-2A, 5/16 Ig (4)
7 Clutch assembly 10516819 5305-054-5648
8 Terminal (2) 5940-539-0511 17 Washer, lock: no. 2 (4) 5310-058-2949
9 Screw, machine: no. 2 UNC-2A, 5/8 Ig (2) 18 Connector, receptacle, electrical: 5935-881-7775
5305-054-5648 19 Gasket 5330-905-9174
10 Nut, no. 4 NC-2B (2) MS 35649-244 20 Plate 8589882
11 Washer, lock: no. 4 (2) 5310-058-2949 21 Grommet: rubber 5325-286-6047
22 Cover 8589874

Figure 6-12. - Continued.

Figure 6-13. Clutch assembly 10516819-exploded view.

6-19
 C 2, TM 9-6650-221-35

1 Seal 10513459
2 Plate 10549726

Figure 6-14. Seal assembly 6650-106-4461 - exploded view.

6-20
 CHAPTER 7

PROCESSING AND PACKAGING

7-1. General 7-3. Final Packaging of Periscope XM47

After the components of periscope XM47 have been Final packaging of periscope XM47 shall be in
repaired, inspected, declared serviceable and accordance with MIL-P-14232/P8589700, packaging
reassembled, the processing and packaging procedures level "A" and packing level "C."
of this chapter should be followed to assure that
serviceability will be maintained. 7-4. Final Packaging of Mount Assembly and Seal
Assembly
7-2. Optical Components
Final packaging and packing, level "C", shall be MIL-
Cover all prisms or optical elements with at least four P-14232/P10513443 for the mount assembly and MIL-P-
thicknesses of neutral lens tissue and secure in place 14232/P10513439 for the seal assembly.
with water-resistant, pressure-sensitive adhesive tape.
Cover the lens tissue with cellulosic cushioning materiel 7-5. Final Packaging of Washer, Pump and Reservoir
and secure in place with pressure-sensitive tape. Assembly and Wiper Assembly.

Final packaging and packing, level "C" shall be MIL-

P-14232/P8589793 for the washer, pump and reservoir
assembly and MIL-P-14232/P10513436 for the wiper
assembly.

7-1
 APPENDIX A

REFERENCES

A-1. Supply Manuals

The following Department of the Army Supply Manuals pertain to repair and overhaul of this materiel:

Brushes, Paint, Sealers, and Adhesives ..................................................................................... SM 5-1-C5-1

Fire Control Maintenance and Repair Shop Specialized Equipment: SM 9-4-4931-J40
Tool Set, Depot Maintenance, Supplementary Tools, Fixtures and
Equipment (4931-798-7583).
Fire Control Maintenance and Repair Shop Specialized Equipment SM 9-4-4931-J51
Tool Set, Field and Depot Maintenance, General Purpose, Special
Tools (4931-574-6433).
Fire Control Maintenance and Repair Shop Specialized Equipment SM 9-4-4931-J48
Tool Set, Special Depot Maintenance, Optical Cleaning, Coating
Cementing and Decementing (4931-535-7827).
Fire Control Maintenance and Repair Shop Specialized Equipment SM 9-4-4931-J52
Wrench Set, Spanner, Field and Depot Maintenance: Tubr, Dble-
End Concave Inserted Blade; Set of 76 Wrenches (4931-580-0012).
Fuels, Lubricants, Oils, and Waxes............................................................................................. SM 10-1-C4-1
Hardware and Abrasives ............................................................................................................. SM 9-1-C5300
Shop Set Field Maintenance: Instrument and Fire Control Basic................................................ SM 9-4-5180-B06
(5180-754-0740).
Tool Kit, Fire Control Repairman (5180-357-7735) ..................................................................... SM 9-4-5180-A61
Tool Kit, Instrument Repairmans (5180-357-7743) .................................................................... SM 9-4-5180-A62

A-2. Other Publications

a. General
Accident Reporting and Records................................................................................................. AR 385-40
Ordnance Direct Support Service................................................................................................ FM 9-3
Ordnance General and Depot Support Service........................................................................... FM 9-4
The Army Equipment Record System and Procedures............................................................... TM 38-750

b. Maintenance.
Cleaning of Ordnance Materiel ................................................................................................... TM 9-208-1
General Maintenance Procedures for Fire Control Materiel........................................................ TM 9-254
Grease, Aircraft and Instrument (For Low and High Temperature) ............................................ MIL-G-23827
Lubricating Oil, Instrument, Aircraft, Low Volatility ...................................................................... MIL-L-6085
Lubrication of Ordnance Materiel ................................................................................................ TM 9-273
DS, GS and Depot Maintenance Manual Including Repair Parts and TM 9-6650-222-35
Special Tool Lists for Periscope, Tank: XM48 (6650-762-9336).
Operators and Organizational Maintenance Manual Armored Recon- TM 9-2350-230-12
naissance-Airborne Assault Vehicle: FT, 153MM, XM651.

A-1
Organizational, DS, GS, and Depot Maintenance Repair Parts and TM 9-2350-230-25P/2
Special Tool Lists for Turrent, Elevating and Traversing Systems,
Cupola, Gun-Launcher and Fire Control For Armored Reconnais-
sance-Airborne Assault Vehicle: FT, 152MM, XM551 (2350-873-
5408).

Painting Instructions for Field Use .............................................................................................. TM 9-213

Sealing Compound, Adhesive Curing (Polysulfide Base)............................................................ MIL-S-11031
Sealing Compound, Non-curing (Polysulfide Base) .................................................................... MIL-S-11030

c. Operations.
Auxiliary Sighting and-Fire Control Equipment ........................................................................... TM 9-575
Northern Operations.................................................................................................................... FM 31-71
Operation and Maintenance of Ordnance Materiel in Extreme Cold TM 9-207
Weather, 0 to -65 F.

d. Shipment and Storage.

Paper, Lens, Tissue, Antitarnish Wrapping ................................................................................. MIL-P-13988
Parts, Equipment and Tools for Ordnance Materiel, Packaging of ............................................ MIL-P-14232/8589700
MIL-P-14232/P10513443
MIL-P-14232/P10513439
MIL-P-14232/P8589793
MIL-P-14232/P10513436
Preservation, Methods of ........................................................................................................... MIL-P-116
Preservation, Packaging and Packing ........................................................................................ AR 700-15

A-2
 C 3, TM 9-6650-221-35

APPENDIX B

REPAIR PARTS AND SPECIAL TOOLS LISTS

This Appendix is Current as of 28 June 1972

Section I. INTRODUCTION

B-1. Scope (1) Source code. This code indicates the

This appendix lists repair parts, special tools, and manner of acquiring support items for maintenance,
support equipment required for the performance of direct repair, or overhaul of end items. Source codes are:
support, general support, and depot maintenance of the
periscope M47. Code Explanation
PA Item procured and stocked for anticipated or
B-2. General known usage.
These repair parts and special tools lists are divided into PB Item procured and stocked for insurance
the following sections: purposes because essentiality dictates that a
minimum quantity be available in the supply
a. Repair Parts List-Section II. A list of repair parts systems.
authorized at the direct support, general support, and PC Item procured and stocked for anticipated or
depot maintenance levels for the performance of known usage and which otherwise would be
maintenance. This list also includes parts which must be coded PA except that it is deteriorative in
removed for the replacement of the authorized parts. nature.
This list is composed of functional groups in ascending PD Support item, excluding support equipment,
numerical sequence with parts in each group listed in procured for initial issue or outfitting and
figure and item number sequence. stocked only for subsequent or additional
initial issues or outfitting. Not subject to
b. Special Tools List-Section III. A list of test and automatic replenishment.
support equipment authorized for the performance of PE Support equipment procured and stocked for
maintenance at the direct support, general support, and initial issue or outfitting to specified
depot levels. maintenance repair activities
PF Support equipment which will not be stocked
c. Federal Stock Number and Reference Number but which will be centrally procured on
Index-Section IV. A list, in ascending numerical demand.
sequence, of all Federal stock numbers appearing in the MO Item to be manufactured or fabricated at
listings followed by a list, in alphanumeric sequence, of organizational level.
all reference numbers appearing in the listings. Federal MF Item to be manufactured or fabricated at direct
stock numbers and reference numbers are cross- support level.
referenced to each illustration figure and item number. MH Item to be manufactured or fabricated at general
support level.
B-3. Explanation of Columns MD Item to be manufactured or fabricated at depot
The following provides an explanation of columns found maintenance level.
in the tabular columns.
a. Source, Maintenance, and Recoverability Codes
(SMR).

B-1
 C 3 TM 9-6650-221-35

Code Explanation Code Explanation

AO Item to be assembled at organizational level. D The lowest maintenance level capable of
AF Item to be assembled at direct support. complete repair of the support item is the
AH Item to be assembled at general support. Depot level.
AD Item to be assembled at depot maintenance Z Nonrepairable.
level.
XA Item is not procured or stocked because the (3) Recoverability Codes. This code indicates the
requirements for the item will result in the disposition action on unserviceable items. Recoverability
replacement of the next higher assembly. codes are:
XB Item is not intended for procurement and is not
stocked. If not available through salvage, Code Explanation
requisition it. Z Nonrepairable item. When unserviceable,
XC Installation drawing, diagram, instruction sheet, condemn and dispose at the level authorized
or field service drawing, that is identified by a to replace the item.
manufacturers part number. F Repairable item. When uneconomically
(2) Maintenance codes. Indicates the levels of repairable, condemn and dispose at (direct
maintenance authorized to use and repair support items. support level.
(a) Use code. This code indicates the H Repairable item. When uneconomically
lowest maintenance level authorized to remove, replace, repairable, condemn and dispose at general
and use the support item. Use codes are: support level.
D Repairable item. When beyond lower level
Code Explanation repair capability, return to depot.
C Used to denote crew or operator maintenance Condemnation and disposal not authorized
performed within organizational maintenance. below depot level.
O Support item is removed, replaced, and used at L Repairable item. Repair, condemnation and
the organizational level of maintenance. disposal not authorized below
F Support item is removed, replaced, and used at depot/specialized repair activity level.
direct support. A Item requires special handling or condemnation
H Support item is removed, replaced, and used at procedure because of specific reasons (i.e.,
general support. precious metal content, high-dollar value,
D Support item is removed, replaced, and used at critical material or hazardous material). Refer
depot only. to appropriate manuals,/directives for specific
(b) Repair code. This code indicates instructions.
whether the item is to be repaired, and identifies the b. Federal Stock Number. This column lists the
lowest maintenance level with the capability to perform Federal stock number assigned to the item and will be
complete repair (i.e., all authorized maintenance used for requisitioning purposes.
functions). Repair codes are: c. Description. This column lists the Federal item
name and a minimum description required to identify the
Code Explanation item. The last line indicated the reference number
O The lowest maintenance level capable of followed by the applicable Federal Supply Code for
complete repair of the support item is the Manufacturer (FSCM) in parentheses. The FSCM is
Organizational level. used as an element in item identification to designate
F The lowest maintenance level capable of manufacturer or distributor or Government Agency; etc.,
complete repair of the support item is Direct and is identified in SB 708-42.
Support. d. Unit of Measure (U/M). This column lists the
H The lowest maintenance level capable of standard or basic quantity by which the listed item is
complete repair of the support item is General used in performing the actual maintenance function.
Support. This measure is expressed by a two-character
alphabetical abbreviation; e.g., ea, in., pr; etc., and is the
basis used to indicate quantities and allowances in
subsequent columns. When the unit of measure differs

B-2
 C 3, TM 9-6650-221-35

differs from the unit of issue, the lowest unit of issue that B-5. How to Locate Repair Parts
will satisfy the required units of measure will be a. When Federal stock number or reference
requisitioned. number is unknown:
e. Quantity Incorporated in Unit. This column lists (1) First. Using the table of contents,
the quantity of the item used in the breakout shown in the determine the functional or subfunctional group within
illustration figure, which is prepared for a functional which the repair part belongs; i.e., head assembly, body
group, subfunctional group, or an assembly. A V assembly, mount assembly; etc. This is necessary since
appearing in this column in lieu of a quantity indicates illustrations are prepared for functional and subfunctional
that no specific quantity is applicable; e.g., shims, groups, and listings are divided into the same groups.
spacers; etc. (2) Second. Find the illustration covering the
f. 30-Day DS/GS Maintenance Allowances. functional or subfunctional group to which the repair part
(1) The repair parts, indicated by asterisk (*) belongs.
entries in separate allowance column(s), for DS and GS (3) Third. Identify the repair part on the
represents those parts authorized for use at that illustration and note the illustration figure and item
category of maintenance and will be requisitioned on an number of the repair part.
as required basis. (4) Fourth. Using the repair parts listing, find
(2) Allowance quantities are indicated in the the functional or subfunctional group to which the repair
special tools list section for special tools, TMDE, and part belongs and locate the illustration figure and item
other support equipment. number noted on the illustration.
g. Depot Maintenance Allowances Per 100 b. When Federal stock number or reference
Equipments. This column indicates that the item number is known:
identified with an asterisk (*) are authorized to be (1) First. Using the index of Federal stock
requisitioned as required. numbers and reference numbers find the pertinent
h. Illustration. This column is divided as Federal stock number or reference number. This index
follows: is in ascending FSN sequence followed by a list of
(1) Figure Number. This column indicates reference numbers in ascending alphanumeric
the figure number of the illustration on which the item is sequence, cross-referenced to the illustration figure
shown. number and item number.
(2) Item Number. This column indicates the (2) Second. Using the repair parts listing, find
callout number used to reference the item on the the functional or subfunctional group of the repair part
illustration. and the illustration figure number and item number
referenced in the index of Federal stock numbers and
B-4. Special Information reference numbers.
a. Action change codes indicated in the left-hand
margin of the listing page denote the following: 6. Abbreviations
N-Indicates an added item.
C-Indicates a change in data. Abbreviations Explanation
R-Indicates a change in FSN only. amp ..................................... amperage
blt ........................................ bolt
b. To maintain disassembly sequence in this cres ..................................... corrosion-resistant steel
manual, a number in parentheses will be displayed dp ........................................ depth
immediately to the right of the callout number on the ea ........................................ each
illustration. fl ......................................... flat
gl ......................................... glass

B-3
 C 3, TM 9-6650-221-35

Abbreviations Explanation Abbreviations Explanation

h........................................... high skt........................................ socket
hdw ..................................... hardware stl......................................... steel
hex....................................... hexagon synth.................................... synthetic
hex soch .............................. hexagonal socket head t ........................................... teeth
hlel ....................................... helical thk ...................................... thick
id.......................................... inside diameter UNC .................................... Unified coarse thread
intl ........................................ internal UNF..................................... Unified fine thread
l............................................ long w.......................................... wide
lkg ....................................... locking v .......................................... voltage
mscr..................................... machine screw
mtg ..................................... mounting B-7. Reporting of Equipment Publication Improve-
muw ..................................... music wire ments
NEF ..................................... National extra fine (thread) The reporting of errors, omissions, and
oa......................................... over-all recommendations for improving this publication by the
od......................................... outside diameter individual user is encouraged. Reports should be
plstc ..................................... plastic submitted on DA Form 2028 (Recommended Changes
pnh....................................... pan head to Publications) and forwarded direct to: Commanding
psvt fnsh .............................. passivated finish Officer, Frankford Arsenal, ATTN: AMSWE-MAF-
r ........................................... right W3100,
rbr ........................................ rubber Philadelphia, PA 19137.
rec........................................ recessed
rnd ...................................... round
scr........................................ screw

B-4
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

HEAD ASSEMBLY 10513625

C PA-OZ-Z 6650-906-7941 HEAD ASSEMBLY: Tank peri- ea 1 * * * * * * * B-1 1
scope
10513625 (19200).
XA SCREW: Machine 4 B-1 2
MS51957-2 (96906).
XA CLIP: 2 B-1 3
10513622-2 (19200).
XA CLIP: 1 B-1 5
10513628 (19200).
XA PRISM: Head assembly 1 B-1 6
8599693 (19200).
XA GASKET: 1 B-1 7
10513627 (19200).
XA HOUSING: Head 1 B-1 8
10513626 (19200).

B-6
 C 3, TM 9-6650-221-35

Figure B-1. Head assembly 10513625 - exploded view.

B-7
 C 3, TM 9-6650-221-35

Figure B-2. Body assembly 10518620-exploded view.

B-8
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

BODY ASSEMBLY 10513620

XA SCREW: Machine 10 B-2 1
MS51959-1 (96906).
XA FRAME: 1 B-2 2
10513623 (19200).
C PA-FZ-Z 6650-902-9741 WINDOW: Optical instrument ea 1 * * * * * * * B-2 3
gl, 0.332 thk 2.645 w, 7.051 1
8599692 (19200).
C PA-FZ-Z 5305-054-651 SCREW: Machine ea 4 * * * * * * * B-2 4
pnh, cres, psvt fnsh,
NO. 6-32UNC-2A, 5/16 1
MS51957-27 (96906).
C PA-FZ-Z 5310-929-6395 WASHER: Lock ea 4 * * * * * * * B-2 5
split, hlcl r lkg, cres, psvt fnsh,
No. 6 scr size
MS35338-136 (96906).
C PA-FZ-Z 1240-191-9213 CATCH: ea 2 * * * * * * * B-2 6
10516029-3 (19200).
C PA-FZ-Z 2640-507-9260 CAP: Tire valve ea 1 * * * * * * * B-2 7
8200055 (19200).
N PA-FZ-Z 2640-060-3543 VALVE CORE: ea 1 * * * * * * * B-2 8
MS51377-2 (96906).
C PA-FZ-Z 2640-114-1096 VALVE STEM: ea 1 * * * * * * * B-2 9
MS51607-1 (96906).
N PA-FZ-Z 1240-464-4792 STRAP: ea 1 * * * * * * * B-2 10
10516567 (19200).
C PA-FZ-Z 4730-684-4401 PLUG: Machine thread ea 1 * * * * * * * B-2 11
cres, psvt fnsh, 3/8-32NEF-2B,
0.166 thk 0.270 oal
8574881 (19200).
C PA-FZ-Z 5330-683-9573 GASKET: ea 1 * * * * * * * B-2 12
Synth rbr, 0.370 id, 3/16 od, 0.625
thk
8574642 (19200).
XA CLIP: 2 B-2 14
10513622-2 (19200).
XA SCREW: Machine 4 B-2 15
MS51957-2 (96906).

B-9
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

BODY ASSEMBLY 10513620-

Continued
XA WASHER: Lock 4 B-2 16
MS35338-134 (96906).
MD-FZ-Z PLATE: Identification ea 1 * B-2 17
11727687 (19200).
XA PRISM: Body assembly 1 B-2 18
8589694 (19200).
XA HOUSING: Body 1 B-2 19
10513617 (19200).

B-10
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

MOUNT ASSEMBLY 10513443

C PA-FZ-Z 5305-057-0523 SCREW: Machine ea 8 * * * * * * * B-3 1
pnh, cross-rec, cres, psvt fnsh
No. 6-40UNF-2A, 5/16 1
MS51958-27 (96906).
C PA-FZ-Z 5310-929-6395 WASHER: Lock ea 8 * * * * * * * B-3 2
split, hlcl, r lkg, cres, psvt fnsh
0.250 od, 0.031 thk, No. 6 scr size
MS35338-136 (96906).
N PA-FZ-Z 5340-111-5289 STRIKE: ea 2 * * * * * * * B-3 3
10542040 (19200).
C PA-FZ-Z 5340-912-5826 SPRING: Helical compression ea 2 * * * * * * * B-3 4
mum 0.033 diam, 0.781 1, 14 coil
10513456 (19200).
N PA-FZ-Z 5340-903-7157 PLUNGER: ea 2 * * * * * * * B-3 5
Cres, 0.218 id, 0.540 1
10513473 (19200).
C PA-FZ-Z 5305-225-9443 SCREW: Cap, socket head ea 4 * * * * * * * B-3 6
hex skt, cres, psvt fnsh, 5/16
24UNF-3A, 11 (mtg hdw)
MS16996-32 (96906).
C PA-FZ-Z 5310-974-6623 WASHER: Lock ea 4 * * * * * * * B-3 7
split hlcl r lkg, cres, psvt fnsh,
0.151 id, 0.239 od, 0.031 thk,
5/16 blt size (mtg hdw)
MS35338-140 (96906).
XA- MOUNT: 1 B-3 8
10513630 (19200).

B-12
 C 3, TM 9-6650-221-35

Figure B-3. Mount assembly 10513443 - exploded view.

B-13
 C 3, TM 9-6650-221-35

Figure B-4. Washer, pump, and reservoir assembly 8589793 - exploded view.

B-14
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

WASHER, PUMP, AND RESER-

VOIR ASSEMBLY 8589793
XA CAP: Reservoir 1 B-4 1
8589803 (19200).
XA TUBING: Rubber 1 B-4 2
8589761-16 (19200).
XA TUBING: Rubber 1 B-4 3
8589761-14 (19200).
XA TUBING: Rubber 1 B-4 4
8589761-12 (19200).
XA TUBING: Rubber 1 B-4 5
8589761-10 (19200).
C PA-FZ-Z 4730-905-9796 TEE: Hose ea 1 * * * * * * * B-4 6
10513618 (19200).
XA TUBING: Rubber 1 B-4 7
8589761-11 (19200).
XA TUBING: Rubber 1 B-4 8
8589761-9 (19200).
N PA-OZ-Z 4730-115-3741 TEE: Pipe ea 1 * * * * * * * B-4 9
10542166 (19200).
XA TUBING: Rubber 1 B-4 10
8589761-3 (19200).
C PA-OZ-Z 5305-052-9329 SCREW CAP: Socket Head ea 2 * * * * * * * B-4 11
hex skt, cres, No. 1/4-28UNF-
3A, 1/2 1 (mtg hdw)
MS16996-21 (96906).
C PA-FZ-Z 5310-933-8121 WASHER: Lock ea 3 * * * * * * * B-4 12
split hlcl, r lkg, cres psvt, 0.489
od, 0.057 thk, 1/4 blt size
(mtg hdw)
MS35338-139 (96906).
C PA-FZ-Z 5310-582-5677 WASHER: Flat ea 2 * * * * * * * B4 13
rnd, 1/4 scr size (mtg hdw)
MS15795-810 (96906).
PA-OZ-Z CLIP: ea 1 * * * * * * * B-4 14
8589915 (19200).
N PA-OZ-Z 4820-836-7555 CHECK VALVE ASSEMBLY: ea 1 * * * * * * * B-4 15
8589808 (19200).

B-15
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

WASHER, PUMP, AND

RESERVOIR ASSEMBLY
8589793-Continued
C PA-OZ-Z 1260-944-5127 PUMP: Washer ea 1 * * * * * * * 5 18
8589809 (19200).
N PA-OZ-Z 5310-768-0319 NUT: Self-locking ea 1 * * * * * * * 5 19
No. 1/4-28 UNF-2B, 7/16 w
MS51968-2 (96906).
C PA-FZ-Z 5305-958-7667 SCREW CAP: Socket head ea 3 * * * * * * * 5 21
hex skt, cres, No. 1/4-28UNF-
3A, 3/4 I (mtg hdw)
MS16996-23 (96906).
XA BRACKET: 1 5 23
10542244 (19200).
C PA-OZ-Z 1260-944-5128 RESERVOIR ASSEMBLY: ea 1 * * * * * * * 5 24
10516821 (19200).

B-16
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

WIPER ASSEMBLY 10549760

C PA-FZ-Z 5305-225-9443 SCREW: Cap, socket head ea 2 * * * * * * * B-5 1
hex cres, psvt fnsh, 5/16-
24UNF-3A, 11 (mtg hdw)
MS16996-32 (96906).
C PA-FZ-Z 5310-974-6623 WASHER: Lock ea 2 * * * * * * * B-5 2
split hlcl It, r Ikg, cres, psvt,
0.575 od, 0.066 thk, No. 5/16
scr size (mtg hdw)
MS35338-140 (96906).
N PA-OZ-Z 5305-068-8139 SETSCREW: ea 1 * * * * * * * B-5 3
hex skt, 1/2 op, cres, psvt fnsh
No. 4-48UNF-3A, 3/16 1
MS510474 (96906).
C PA-OO-Z 6650-924-5875 WIPER BLADE ASSEMBLY: ea 1 * * * * * * * B-5 4
10516816 (19200).
XA SCREW: Machine 1 B-5 5
MS51959-2 (96906).
XA SCREW: Machine 5 B-5 6
MS51959-3 (96906).
XA HOUSING ASSEMBLY: 1 B-5 7
10549752 (19200).
XA SUPPORT ASSEMBLY: 1 B-5 9
10549753 (19200).
XA SCREW: Machine 3 B-5 10
MS51957-36 (96906).
C PA-FZ-Z 5310-929-6395 WASHER: Lock ea * * * * * * * B-5 11
split hlcl lt, r Ikg, cres, psvt fnsh
0.141 id, 0.250 od, 0.031 thk,
No. 6 scr size
MS35338-136 (96906).
XA SCREW: Machine 2 B-5 12
MS51957-31 (96906).
XA HOUSING ASSEMBLY: 1 B-5 14
8589875 (19200).
XA COVER ASSEMBLY: 1 B-5 15
10549762 (19200).

B-18
 C 3, TM 9-6650-221-35

Figure B-5. Wiper assembly 10549760-partial - exploded view.

B-19
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

WIPER BLADE ASSEMBLY

10516816
C PA-OZ-Z 6650-924-5876 WIPER BLADE: Periscope ea 1 * * * * * * * B-6 1
8589833 (19200)
XA RING: Retaining 1 B-6 2
MS16624-1012 (96906).
XA PIN: Grooved headed 1 B-6 3
10513634 (19200).
XA ARM ASSEMBLY: 1 B-6 4
8589905 (19200).
XA PIVOT: 1 B-6 5
8589861 (19200).

B-20
 C 3, TM 9-6650-221-35

Figure B-6. Wiper blade assembly 10516816 - exploded view.

B-21
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

HOUSING ASSEMBLY 10549752

N PA-FZZ 5305-843-2841 SETSCREW: ea 1 * * * * * * * B-7 1
No. 2-56UNC-3A, 3/321
MS51021-1 (96906).
XA SEAT: 1 B-7 2
8620836 (19200).
XA RETAINER: 1 B-7 3
10513644 (19200).
C PA-FZ-Z 5330-905-9175 PACKING: Preformed ea 1 * * * * * * * B-7 4
synth rbr, 0.144 id, 0.070 thk
8589770 (19200).
XA BEARING: Ball, annular 2 B-7 5
8589769 (19200).
XA GEAR: 1 B-7 6
10549758 (19200).
XA TUBE: 1 B-7 8
8589925 (19200).
XA HOUSING: 1 B-7 9
10549739 (19200).
N PA-FZ-Z 5315-817-0889 PIN: Straight, headless ea 1 * B-7 10
MS16555-601 (96906).

B-22
 C 3, TM 9-6650-221-35

Figure B-7. Housing assembly 10549752 - exploded view.

B-23
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

SUPPORT ASSEMBLY 10549753

XA PIN: Tapered, plain 1 B-8 1
MS24692-3 (96906)
XA BEARING: Ball, annular 4 B-8 2
8589768 (19200).
XA SHAFT: 1 B-8 3
10513477 (19200).
XA GEAR: 1 B-8 4
10549750 (19200).
N PA-FZ-Z 3020-783-7659 GEAR: ea 2 * * * * * * * B-8 5
10513648 (19200).
XA PIN: 2 B-8 7
10516178-4 (19200).
XA GEAR: 1 B-8 8
10513646 (19200).
XA SHAFT: 1 B-8 12
10549737 (19200).
XA SUPPORT: 1 B-8 14
10513476 (19200).

B-24
 C 3, TM 9-6650-221-35

Figure B-8. Support assembly 10549753 - exploded view.

B-25
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

HOUSING ASSEMBLY 8589875

C PA-FZZ 5305-054-5648 SCREW: Machine ea 3 * * * * * * * B-9 1
pnh, cross-rec, cres, psvt fnsh
No. 4-40UNC-2A, 5/16 1
MS51957-14 (96906).
C PA-FZ-Z 5310-933-8118 WASHER: Lock ea 3 B-8 2
split hlcl It, r lkg, cres, psvt fnsh,
0.204 od, 0.025 thk, No. 4 scr size
MS35338-135 (96906).
XA SUPPORT: 1 B-9 3
8589870 (19200).
N PA-FZ-Z 5315-702-9650 PIN: Straight, headless ea 2 * * * * * * * B-9 4
1/16x1/4 1
MS16555-602 (96906).
XA BEARING: Ball, annular 1 B-9 5
8589883 (19200).
XA PIVOT: Pinned 1 B-9 6
10516818 (19200).
XA PIN: 1 B-9 7
10516178-2 (19200).
XA PIVOT: 1 B-9 8
8589866 (19200).
XA SHAFT: 1 B-9 9
8589867 (19200).
XA DRIVER: Pinned 1 B-9 10
10516817 (19200).
N PA-FZ-Z 5315-806-7039 PIN: Straight, headless ea 1 * * * * * * * B-9 11
MS16555-604 (96906).
XA GEAR: 1 B-9 12
8589906 (19200).
XA DRIVER: 1 B-9 13
8589868 (19200).
XA BEARING: Ball, annular 1 B-9 14
8589768 (19200).
N PA-FZ-Z 5315-817-0889 PIN: Straight, headless ea 1 * * * * * * * B-9 15
MS16555-601 (96906).
XA HOUSING: 1 B-9 16
8589873 (19200).

B-26
 C 3, TM 9-6650-221-35

Figure B-9. Housing assembly 8589875 - exploded view.

B-27
 C 3, TM 9-6650-221-35

Figure B-10. Cover assembly 10549762 - exploded view.

B-28
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

COVER ASSEMBLY 10549762

C PA-FZ-Z 5305-054-5642 SCREW: Machine ea 2 * * * * * * * B-10 1
pnh, cross-rec, cres, psvt fnsh,
No. 2-56UNC-2A, 5/8 1
MS51957-8 (96906).
C PA-FZ-Z 5310-938-2013 NUT: Plain, hexagon ea 4 * * * * * * * B-10 2
mscr cres, psvt fnsh
No. 2-56UNC-2B, 3/16 w
MS35649-224 (96906).
C PA-FZ-Z 5310-543-4652 WASHER: Lock ea 4 * * * * * * * B-10 3
fl intl t, cres, psvt fnsh, 0.200 od,
0.015 thk, No. 2 blt size
MS35333-69 (96906).
C PA-FZ-Z 6650-924-5877 ADAPTER: Switch actuator ea 1 * * * * * * * B-10 4
stl, 7/32 h, 21/23 w, 1 11/16 1
8589869 (19200).
C PA-FZ-Z 5930-583-6582 SWITCH: Sensitive ea 1 * * * * * * * B-10 5
plstc, 250 v. 5 amp, 23/64 h,
1/4 w, 25/32 1
8602590 (19200).
N PA-FZ-Z 5305-068-5412 SCREW: Cap, socket head ea 1 * * * * * * * B-10 6
hex hd, cres, psvt fnsh,
No. 2-56UNC-3A, 1/2 1
MS16995-4 (96906).
C PA-FZ-Z 5310-928-2690 WASHER: Lock ea 1 * * * * * * * B-10 7
split hlcl, It, r lkg, cres, psvt
fnsh, 0.094 id, 0.172 od, 0.020
thk, No. 2 scr size
MS35338-134 (96906).
XA RANK: 1 B-10
8
10549745 (19200).
XZ CLAMP: 1 B-10 9
10513447 (19200).
C PA-FZ-Z 5940-539-0511 TERMINAL: Stud ea 1 * * * * * * * B-10 10
10513438 (19200).
N PA-FZ-Z 5305-054-5638 SCREW: Machine ea 2 * * * * * * * B-10 11
pnh, cross-rec, cres, psvt fnsh,
No. 2-56UNC-2A, 5/161 i
40 MS51957-4 (96906). o

B-29
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

COVER ASSEMBLY 10549762-

Continued
N PA-FZ-Z 5945-872-0571 RELAY: Armature ea 1 * * * * * * B-10 14
10549795 (19200).
C PA-FZ-Z 5305-054-5648 SCREW: Machine ea * * * * * * * * B-10 15
phh, cross-rec, cres, psvt fnsh,
No. 4-40UNC-2A, 5/16 1
MS51957-14 (96906).
C PA-FZ-Z 5310-934-9748 NUT: Plain, hexagon ea 2 * * * * * * * B-10 16
cres, psvt fnsh,
No. 4-40UNC-2B
MS35649-244 (96906).
C PA-FZ-Z 5310-933-8118 WASHER: Lock ea 6 * * * * * * * B-10 17
split hlcl, It, r lkg, cres, psvt fnsh
0.204 od, 0.025 thk, No. 4 scr size
MS35338-135 (96906).
XA NOISE SUPPRESSION FILTER: 1 B-10 18
(furnished with Motor,
3010-906-6317).
C PA-FZ-Z 5305-054-6651 SCREW: Machine ea 4 * * * * * * * B-10 19
pnh, cross-rec, cres, psvt fnsh
No. 6-32UNC-2A, 5/16 1
MS51957-27 (96906).
C PA-FZ-Z 5310-929-6395 WASHER: Lock ea 4 * * * * * * * B-10 20
split, hlcl, It, r lkg, cres, psvt
fnsh 0.141 ID, 0.250 od, 0.031
thk, No. 6 scr size
MS35338-136 (96906).
C PA-FZ-Z 3010-906-6317 GEARCASE: Motor ea 1 * * * * * * * B-10 21
10513631 (19200).
C PA-FZ-Z 5935-846-2175 CONNECTOR: Receptacle ea 1 * * * * * * * B-10 24
electrical
MS3112-E-8-4P (96906).
C PA-FZ-Z 5305-905-9174 GASKET: ea 1 * * * * * * * B-10 25
synth rbr, 0.031 thk, 0.875 w, oa,
0.875 1, 4 blt holes
MS51007-1 (96906).
XA PLATE: 1 B-10 26
8589882 (19200).

B-30
 C 3, TM 9-6650-221-35

C PA-FZ-Z 5325-286-6047 GROMMET: ea 1 * * * * * * * B-10 27

rbr, 1/8 id
MS35489-1 (96906).
XA COVER: 1 B-10 28
8589874 (19200).

B-31
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

SEAL ASSEMBLY 10549727

N PA-OZ-Z 5305-267-8952 SCREW: Cap, hexagon head ea 11 * * * * * * * B-11 1
cres, psvt fnsh,
No. 1/4-28UNF-2A, 1/21
MS90727-3 (96906).
XA PLATE: 1 B-11 2
10549726 (19200)
XA SEAL: 1 B-11 3
10513459 (19200).

B-32
 C 3, TM 9-6650-221-35

Figure B-11. Seal assembly 10549727 - exploded view.

B-33
 C 3, TM 9-6650-221-35
Section II. REPAIR PARTS LIST
(1) (2) (3) (4) (5) (6) (7) (8) (9)
30-Day DS 30-Day GS
maint alw maint alw Dep Illust
Actn Unit Qty maint
ch SMR Federal Description of inc. (a) (b) (c) (a) (b) (c) alw per (a) (b)
code code stk number meas in 1- 21- 51- 1- 21- 51- 100 Fig. Itm
Ref. No. & FSCM unit 20 50 100 20 50 100 equip No. No.

TOOLS AND EQUIPMENT

EQUIPMENT
C PA-OF-F 6650-906-7944 MOUNT: Telescope assembly ea 3 * * * * * * * B-12 1
10513443 (19200).
N PA-OZ-Z 6650-059-3675 SEAL ASSEMBLY: ea 3 * * * * * * * B-12 2
10549727 (19200).
AO WASHER, PUMP, AND RESER- ea 1 B-12 3
VOIR ASSEMBLY:
8589793 (19200).
N PA-FF-F 6650-135-9044 WIPER ASSEMBLY: ea 1 * * * * * * * B-12 4
10549760 (19200).

B-34
 C 3, TM 9-6650-221-35

Figure B-12. Tools and equipment.

B-35
 C 3, TM 9-6650-221-35

Section IV. FEDERAL STOCK NUMBER AND REFERENCE NUMBER INDEX

Federal stock number cross-reference to figure number and item number

STOCK NUMBER FIG. ITEM STOCK NUMBER FIG. ITEM

1240-191-9213 2 6 5310-929-6395 4 2
1240-464-4792 2 10 5310-929-6395 6 11
1260-944-5127 5 18 5310-929-6395 11 20
1260-944-5128 5 24 5310-933-8118 10 2
2640-060-3543 2 8 5310-933-8118 11 17
2640-507-9260 2 7 5310-933-8121 5 12
3010-906-6317 11 21 5310-934-9748 11 16
3020-783-7659 9 5 5310-938-2013 11 2
4730-115-3741 5 9 5310-974-6623 4 7
4730-684-4401 2 11 5310-974-6623 6 2
4730-905-9796 5 6 5315-702-9650 10 4
4820-836-7555 5 15 5315-806-7039 10 11
5305-052-9329 5 11 5315-817-0889 8 10
5305-054-5638 11 11 5315-817-0889 10 15
5305-054-5642 11 1 5325-286-6047 11 27
5305-054-5648 10 1 5330-683-9573 2 12
5305-054-5648 11 15 5330-905-9175 8 4
5305-054-6651 2 4 5340-111-5289 4 3
5305-054-6651 11 19 5340-903-7157 4 5
5305-057-0523 4 1 5340-912-5826 4 4
5305-068-5412 11 6 5930-583-6582 11 5
5305-068-8139 6 3 5935-846-2175 11 24
5305-225-9443 4 6 5940-539-0511 11 10
5305-225-9443 6 1 5945-872-0571 11 14
5305-267-8952 12 1 6650-059-3675 3 2
5305-843-2841 8 1 6650-135-9044 3 4
5305-905-9174 11 25 6650-902-9741 2 3
5305-958-7667 5 21 6650-906-7941 1 1
5310-543-4652 11 3 6650-906-7944 3 1
5310-582-5677 5 13 6650-924-5875 6 4
5310-768-0319 5 19 6650-924-5876 7 1
5310-928-2690 11 7 6650-924-5877 11 4
5310-929-6395 2 5

Reference number cross-reference to manufacturers code, figure number, and item number

Reference Figure Item Reference Figure Item

No. FSCM No. No. No. FSCM No. No.
MS15795-810 96906 5 13 MS35338-135 96906 10 2
MS16565-601 96906 8 10 MS35338-135 96906 11 17
MS16555-601 96906 10 15 MS35338-136 96906 2 5
MS16555-602 96906 10 4 MS35338-136 96906 4 2
MS16555-604 96906 10 11 MS35338-136 96906 6 11
MS16624-1012 96906 7 2 MS35338-136 96906 11 20
MS16995-4 96906 11 6 MS35338-139 96906 5 12
MS16996-21 96906 5 11 MS35338-140 96906 4 7
MS16996-23 96906 5 21 MS35338-140 96906 6 2
MS16996-32 96906 4 6 MS35489-1 96906 11 27
MS16996-32 96906 6 1 MS35649-224 96906 11 2
MS24692-3 96906 9 1 MS35649-244 96906 11 16
MS3112-E-8-4P 96906 11 24 MS51007-1 96906 11 25
MS35333-69 96906 11 3 MS51021-1 96906 8 1
MS35338-134 96906 2 16 MS51047-8 96906 6 3
MS35338-134 96906 11 7 MS51377-2 96906 2 8

B-36
 C 3, TM 9-6650-221-35

Reference Figure Item Reference Figure Item

No. FSCM No. No. No. FSCM No. No.
MS51957-14 96906 10 1 10549737 19200 9 12
MS51957-14 96906 11 15 10549739 19200 8 9
MS51957-2 96906 1 2 10549745 19200 11 8
MS51957-2 96906 2 15 10549750 19200 9 4
MS51957-27 96906 2 4 10549752 19200 6 7
MS51957-27 96906 11 19 10549753 19200 6 9
MS51957-31 96906 6 12 10549758 19200 8 6
MS51957-36 96906 6 10 10549760 19200 3 4
MS51957-4 96906 11 11 10549762 19200 6 15
MS51957-8 96906 11 1 10549795 19200 11 14
MS51958-27 96906 4 1 11727687 19200 2 17
MS51959-1 96906 2 1 8200055 19200 2 7
MS51959-2 96906 6 5 8574642 19200 2 12
MS51959-3 96906 6 6 8574881 19200 2 11
MS51968-2 96906 5 19 8589694 19200 2 18
MS90727-3 96906 12 1 8589761-10 19200 5 5
10513438 19200 11 10 8589761-11 19200 5 7
10513443 19200 3 1 8589761-12 19200 5 4
10513447 19200 11 9 8589761-14 19200 5 3
10513456 19200 4 4 8589761-16 19200 5 2
10513473 19200 4 5 8589761-3 19200 5 10
10513476 19200 9 14 8589761-9 19200 5 8
10513477 19200 9 3 8589768 19200 8 5
10513617 19200 2 19 8589768 19200 9 2
10513618 19200 5 6 8589768 19200 10 14
10513622-2 1 3 8589770 19200 8 4
10513622-2 19200 2 14 8589793 19200 3 3
10513623 19200 2 2 8589803 19200 5 1
10513625 19200 1 1 8589808 19200 5 15
10513626 19200 1 8 8589809 19200 5 18
10513627 19200 1 7 8589833 19200 7 1
10513628 19200 1 5 8589861 19200 7 5
10513630 19200 4 8 8589866 19200 10 8
10513631 19200 11 21 8589867 19200 10 9
10513634 19200 7 3 8589868 19200 10 13
10513644 19200 8 3 8589869 19200 11 4
10513646 19200 9 8 8589870 19200 10 3
10513648 19200 9 5 8589873 19200 10 16
10516029-3 19200 2 6 8589874 19200 11 28
10516178-2 19200 10 7 8589875 19200 6 14
10516178-4 19200 9 7 8589882 19200 11 26
10516567 19200 2 10 8589883 19200 10 5
10516816 19200 6 4 8589905 19200 7 4
10516817 19200 10 10 8589906 19200 10 12
10516818 19200 10 6 8589915 19200 5 14
10516821 19200 5 24 8589925 19200 8 8
10542040 19200 4 3 8599692 19200 2 3
10542166 19200 5 9 8599693 19200 1 6
10542244 19200 5 23 8602590 19200 11 5
10549727 19200 3 2 8620836 19200 8 2

B-37
 INDEX

Paragraph Page Paragraph Page

Accident reports (See Report of Equipment issued with tank peri-
accidents) scope:
Actuator: General description........................ 6-1 6-1
Inspection...................................... 6-15b 6-13 Specific description........................ 6-2 6-1
Installation ..................................... 6-15e 6-13 Mount assembly............................. 6-2a 6-1
Removal ........................................ 6-15a 6-11 Seal assembly................................ 6-2b 6-1
Adapter, nitrogen filling 4931-508- Washer, pump and reservoir
5453 ........................................... 5-11 5-4 assembly .................................... 6-2e 6-1
Adjustment and test (See Test Wiper assembly ............................. 6-2d 6-1
and adjustment) Forms, authorized (See author-
Armored Reconnaissance Airborne ized forms)
Assault Vehicle: XM551 ............. 1-1b 1-1 Forms, records, and reports:............. 1-4 1-1
Authorized forms .............................. 1-4a 1-1 Gear case motor:
Ball bearings: Inspection....................................... 6-19b 6-17
Inspection ..................................... 6-14b 6-11 Installation...................................... 6-19 6-17
Installation . ................................... 6-14c 6-11 Removal......................................... 6-19a 6-17
Disassembly.................................. 6-14a 6-11 General inspection of periscope ....... 3-6 3-1
Bearings, ball (See Ball bearings) Gun, injection hydraulic 4931-508-
Blade assembly: 5428............................................ 5-7e(1) 5-1
Inspection...................................... 6-13b 6-11 Helical compression spring:
Installation ..................................... 6-13c 6-11 Assembly ....................................... 6-5e 6-7
Removal ........................................ 6-13a 6-11 Cleaning......................................... 6-5c 6-6
Catch: Disassembly................................... 6-5a 6-6
Inspection...................................... 5-8b 5-4 Inspection....................................... 6-5b 6-6
Installation . ................................... 5-8c 5-4 Lubrication ..................................... 6-5d 6-7
Removal ........................................ 5-8a 5-4 Testing ........................................... 6-5f 6-7
Characteristics, optical (See Opti- Helium pressure regulator (See
cal characteristics). Regulator; helium pressure)
Cleaning ........................................... 5-5 5-1 Hose assembly 4931-508-5546 ........ 5-11 5-4
Comments, technical manual ........... 1-2 1-1 Hose assembly rubber 4931-561-
Common tools and equipment ......... 2-1 2-1 0713............................................ 5-11 5-4
Compression spring, helical (See Inspection:
Helical compression spring) Scope............................................. 3-1 3-1
Data .................................................. 1-6 1-5 Using position ................................ 3-4 3-1
Depot Maintenance Work Require- Inspection, shop ................................ 3-9 3-2
ments (DMWR) .......................... 1-1a 1-1 Inspection, optical components:........ 3-7 3-1
Description of periscope: Body assembly............................... 3-11b 3-2
Body assembly.............................. 1-5d 1-3 Head assembly .............................. 3-11a 3-2
General ......................................... 1-5a 1-1 Instrument window, optical (See
Head assembly ............................. 1-5c 1-1 Optical instrument window)
Optical scheme ............................. 1-5b 1-1 Machine thread plug:
Electrical receptacle connector: Inspection....................................... 5-10b 5-4
Inspection...................................... 6-18b 6-14 Installation...................................... 5-10c 5-4
Installation ..................................... 6-18c 6-14 Removal......................................... 5-10a 5-4
Removal ........................................ 6-18a 14 Maintenance allocation and parts ..... 1-3 1-1
Equipment Improvement Recom- Maintenance, organizational (See
mendations EIR) ........................... 1-4c 1-1 Organizational maintenance)

I-1
 Paragraph Page Paragraph Page
Modification Work Orders (MWO) .... 3-5 3-1 Shop inspection (See inspection, shop)
Motor, gear case (See Gear case Size ................................................... 1-6 1-5
motor). Special tools and equipment ............. 2-2 2-1
Mount assembly: Standards, serviceability (See Serv-
General inspection ........................ 6-3a 6-5 iceability standards)
Specific inspection ........................ 6-3b 6-5 Switch, sensitive (See Sensitive
Troubleshooting ............................ 6-4 6-5 switch)
Nitrogen filling adapter (See Tables:
Adapter, nitrogen filling). Mount assembly troubleshooting
Nitrogen tank (See Tank, nitrogen) (table 6-1) ................................... 6-4 6-6
Optical characteristics ...................... 1-6a 1-5 Special tools and equipment
Optical component inspection (See (table 2-1) ................................... 2-2 2-1
Inspection, optical component). Troubleshooting (table 4-1)............ 4-4 4-1
Optical instrument window: Washer, pump, and reservoir as-
Assembly....................................... 5-7e 5-1 sembly troubleshooting (table6-2) 6-8 6-8
Cleaning ........................................ 5-7c 5-1 Wiper assembly troubleshooting
Inspection...................................... 5-7b 5-1 (table 6-3) ................................... 6-12 6-10
Removal ........................................ 5-7a 5-1 Tank, nitrogen 6830-264-9086.......... 5-11 5-4
Repair and reclamation ................. 5-7d 5-1 Technical manual comments ( See
Organizational maintenance............. 4-2 4-1 Comments, technical manual)
Packaging and processing (See Technique, maintenance (See
processing and packaging) Maintenance technique)
Painting............................................. 5-4 5-1 Test and adjustment:
Parts replacement ............................ 5-2 5-1 Final test ........................................ 5-11b 5-5
Processing and packaging: Purging and charging body as-
Final packaging of mount assem- sembly ........................................ 5-11a 5-4
bly and seal assembly................ 7-4 7-1 Test, gage assembly 4931-546-9773 5-11 5-4
Final packaging of periscope ........ 7-3 7-1 Thread plug, machine (See Ma-
Final packaging of washer, pump chine thread plug)
and reservoir assembly and Tools and equipment, common ( See
wiper assembly .......................... 7-5 7-1 Common tools and equipment)
General ......................................... 7-1 7-1 Tools and equipment, special (See
Optical Components...................... 7-2 7-1 Special tools and equipment)
Receptacle connector, electrical (See Troubleshooting:
Electrical receptacle connector) Procedure ...................................... 4-4 4-1
Records, forms and reports ( See Purpose.......................................... 4-1, 4-3 4-1
Forms, records and reports) Valve assembly:
Regulator, helium pressure 1240- Assembly ....................................... 5-9d 5-4
558-0922.................................... 5-11 5-4 Disassembly................................... 5-9b 5-4
Repair (See Also specific items): Inspection....................................... 5-9c 5-4
Scope......................................... 5-1 5-1 Installation...................................... 5-9e 5-4
Replacement, parts (See Parts re- Removal......................................... 5-9a 5-4
placement) Washer, pump and reservoir assembly:
Report of accidents .......................... 1-4b 1-1 General inspection......................... 6-6a 6-7
Reports, records and forms ( See Installation...................................... 6-9c 6-10
Forms, records and reports) Performance test ........................... 6-7 6-7
Scope of technical manual ............... 1-1 1-1 Removal......................................... 6-9a 6-7
Sealing.............................................. 3-10, 3-2, 5-5 Specific inspection ......................... 6-6b, 6-7
5-11a(10) 6-9b
Semiconductor device: Troubleshooting ............................. 6-8 6-7
Installation ..................................... 6-17b 6-14 Weight ............................................... 1-6b 1-5
Removal ........................................ 6-17a 6-13 Wiper assembly:
Sensitive switch: General inspection......................... 6-10a 6-10
Inspection...................................... 6-16b 6-13 Performance test ........................... 6-11 6-10
Installation ..................................... 6-16c 6-13 Specific inspection ......................... 6-10b 6-10
Removal ........................................ 6-16a 6-13 Troubleshooting ............................. 6-12 6-10
Serviceability standards.................... 3-3 3-1
I-2
By Order of the Secretary of the Army:

HAROLD K. JOHNSON,
General, United States Army,
Official: Chief of Staff.

J. C. LAMBERT,
Major General, United States Army,
The Adjutant General.

Distribution:
To be distributed in accordance with DA Form 12-41 requirements for Direct and General Support Maintenance for
Periscope.

U.S. GOVERNMENT PRINTING OFFICE : 1985 0 - 461-202 (20058)

PIN: 028037-000