640 TRENCHER

OPERATOR’S AND PARTS

MANUAL
UNIVERSAL SKID STEER APPLICATIONS

SERIAL NUMBER: ___________________ Manual Number: OM660

Part Number: 75560
MODEL NUMBER: ___________________ Rev. 2

800-922-2981 I www.paladinbrands.com P.O. Box 266, Delhi, IA 52223-0266, United States of America
9557 10-4-06-2
 TABLE OF CONTENTS
640 TRENCHER

TO THE OWNER ................................................................................ A

SAFETY PRECAUTIONS ....................................................................... B

To The Operator
Before You Start
During Trencher Operation
Transporting The Trencher
Maintaining The Trencher

INTERNATIONAL SYMBOLS ................................................................. C

PREOPERATION ..................................................................................D
General Information
Options
Trencher Major Component Nomenclature

MOUNTING KIT INSTALLATION............................................................ E

Hydraulic Kits
Optional Hydraulic Side Shift Kits
Hydraulic Side Shift Kit Mounting Instructions

TRENCHER INSTALLATION .................................................................. F

OPERATING INSTRUCTIONS ............................................................... G

Controls
Operating Techniques

TRENCHER ASSEMBLY ......................................................................... I

DIGGING CHAIN OPTIONS ................................................................... J

MAINTENANCE .................................................................................. L

STORAGE ......................................................................................... M

TROUBLE SHOOTING ..........................................................................N

BOLT TORQUE SPECIFICATIONS ......................................................... O

SPECIFICATIONS ................................................................................ P

DECALS ........................................................................................... Q

PREDELIVERY CHECK LIST .................................................................. R

LIMITED WARRANTY .......................................................................... S

9561
4-15-04
A A
TO THE OWNER

GENERAL COMMENTS

Congratulations on the purchase of your new trencher! Your trencher

was carefully designed and manufactured to give you many years of de-
pendable service. Your trencher will require some minor maintenance (such
as cleaning and lubricating) to keep it in top working condition. Be sure to
observe all safety precautions and maintenance procedures as described in
this manual.

ABOUT THIS MANUAL

This manual has been designed to help you do a better, safer job.
Read this manual carefully and become familiar with it's contents. Remem-
ber, never let anyone operate this trencher without reading the "Safety
Precautions" and "Operating Instructions" sections of this manual. (See
Sections B and G respectively.)

Unless noted otherwise, "right-hand" and "left-hand" sides are deter-

mined from the position of the skid steer operator sitting in the seat facing
forward.

SAFETY ALERT SYMBOL

This is the "Safety Alert Symbol" used by this industry. This

symbol is used to warn of possible injury. Be sure to read all
warnings carefully. They are included for your safety and for
the safety of others working with you.

SERVICE

When servicing your trencher, remember to use only manufacturer

replacement parts. Substitute parts may not meet the standards required
for safe, dependable operation.

To facilitate parts ordering, record the model and serial number of

your trencher in the space provided on this page. This information may be
obtained from the trencher identification plate located on the right side of
the trencher main frame.

MODEL DATE PURCHASED

SERIAL NO.

MOUNTED ON

Your parts dealer needs this information to insure that you receive the cor-
rect parts for your specific trencher.

4411
2-25-92-2
B B
SAFETY PRECAUTIONS

TAKE NOTE! THIS SAFETY ALERT SYMBOL FOUND THROUGHOUT THIS

MANUAL IS USED TO CALL YOUR ATTENTION TO INSTRUCTIONS INVOLV-
ING YOUR PERSONAL SAFETY OR OTHERS. FAILURE TO FOLLOW
THESE INSTRUCTIONS CAN RESULT IN INJURY OR DEATH.

THIS SYMBOL MEANS:

ATTENTION!
BECOME ALERT!
YOUR SAFETY IS INVOLVED!

SIGNAL WORDS: Note the use of signal words DANGER, WARNING, and
CAUTION with the safety messages. The appropriate signal word for each has
been selected using the following guidelines:

DANGER: Indicates an imminently hazardous situation, which if not avoided,

will result in death or serious injury. This signal word is to be limited
to the most extreme situations, typically for machine compo-
nents which, for functional purposes, cannot be guarded.

WARNING: Indicates a potentially hazardous situation, which if not avoided,

could result in death or serious injury, and includes hazards that
are exposed when guards are removed. It may also be used to
alert against unsafe practices.

CAUTION: Indicates a potentially hazardous situation, which if not avoided,

may result in minor or moderate injury. It may also be used to
alert against unsafe practices.

6621
5-18-95
B B
SAFETY PRECAUTIONS
TRENCHERS

GENERAL INFORMATION

This section is composed of various warnings and safety tips. Read and
learn all the information in this section before you attempt to use your tren-
cher. Also read your vehicle owner's manual before using your equipment. This
knowledge will help you operate your unit safely. Do not take this information
lightly, it is presented for your own benefit and for the benefit of others
working around you.

The "Safety Alert Symbol" , as previously described, will be used throughout

this manual. It will appear with one of the words DANGER, WARNING, or CAU-
TION above it, and a safety message pertaining to the specific topic being covered.
Take the time to read these messages as you come across them.

TO THE OPERATOR

The primary responsibility for safety with the equipment falls to the
operator. It is the skill, care, common sense, and good judgment of the
operator that will determine how efficiently and safely the job is performed.
Know your equipment before you start. Know its capabilities, dimensions,
and how to operate all the controls. Visually inspect your equipment before
you start, and never operate equipment that is not in proper working order
with all safety devices intact.

BEFORE YOU START

1. Wear the right clothing and gear for the job. Protective equipment
such as hard hat, steel toed shoes, leather gloves, or safety glasses
may be in order. They can protect you from needless injury.

2. Do not wear loose clothing, or things such as rings and watches

around the equipment. They could get caught in moving parts, and
lead to serious injury or death.

3. Know your equipment inside and out. Know how to operate all con-
trols, and know emergency shutdown procedures. Make sure all
safety devices are in place and working.

4. Keep all step plates, grab bars, pedals, and controls free of dirt,
grease, and oil. Keep equipment clean to help avoid injury from a fall
when getting on or off equipment.

4213
4-14-05-3
B B
SAFETY PRECAUTIONS
TRENCHERS

5. Do not use the trencher or crumber bar as a step, or grab the digging
chain when climbing on or off the trencher. Damage to the equip-
ment or personal injury could result.

6. Know your work area before you begin. Observe any potential hazard
areas such as soft ground, drop-offs, rocks and other obstacles.

7. Know where all utility lines are. Observe overhead electrical and
phone lines. Be sure equipment will safely clear them. Know the
location of underground cables, wires, gas and water lines, tanks,
etc. Contact with electrical lines could cause electrocution. Hitting a
gas line or underground tank could cause an explosion.

8. Be alert to others in the work area. Be sure others know when and
where you will be working. Make sure no one is underneath or behind
equipment.

9. Never try to board equipment while it's moving.

10. Always use your seatbelt and safety ROPS (Roll-Over-Protective

Structure) that are on the equipment. They could save your life in the
event of a mishap.

11. Never take passengers on your equiment. There is no safe place for
riders.

12. Test all controls before you start. This includes safety equipment and
devices.

DURING TRENCHER OPERATION

1. Be alert to what is going on around you. Watch for others who may
not be watching out for themselves.

2. Never operate equipment while under the influence of alcohol, or

prescription drugs which could inhibit physical and or mental capac-
ity.

3. Stop the trencher and shut off the engine if anyone approaches the
equipment while it's in motion. They may not be familiar with the
equipment and get in the way of moving parts.

4. Be alert to changes in the work area. Changes in weather and soil

conditions could turn a safe work site into a hazardous area.
4214
2-25-92-2
B B
SAFETY PRECAUTIONS
TRENCHERS
5. Keep equipment away from the trencher after it has been dug. The
weight of the unit could cause a cave-in.

6. Never drop a boom with a rapidly moving digging chain on the

ground. The force of the trencher may cause the vehicle to move
suddenly and unexpectedly. Have the chain moving slowly, and
lower the boom carefully when starting a new cut.

7. Use caution when digging on a slope. The natural vibration of the

trencher will make the unit creep sideways downhill. Try to dig with
the trencher in a level position.

8. Never try to make sharp turns while trenching. The trencher boom
could become wedged in the trench and damaged.

9. Never attempt to free a stuck chain with the unit running. If the
trencher does become jammed, stop the unit and visually inspect the
situation.

10. Check the trencher frequently for loose hardware and fittings. The
natural vibration of the unit will cause fasteners to loosen during
operation.

TRANSPORTING THE TRENCHER

1. Follow all federal, state, and local regulations when transporting the
unit on public roads.

2. Use a SMV (Slow Moving Vehicle) sign on the vehicle when trans-
porting. This will help alert others to your presence.

3. Be sure all lights and turn signals are in working order. Use them as
required.

4. When parking, park the unit on hard level ground and lower the tren-
cher boom. Block the wheels, and set the parking brake. Shut off the
engine.

5. Follow factory recommended shut down procedures for equipment.

6. Stop the trencher and vehicle before dismounting.

4215
2-26-92-2
B B
SAFETY PRECAUTIONS
TRENCHERS
MAINTAINING THE TRENCHER

1. Replace all safety shields and guards when performing maintenance.

Do not operate the trencher with protective equipment removed.

2. Lower the trenching boom, and shut off the engine before working on
the unit. Never perform maintenance on a trencher while it is run-
ning.

3. Make sure all operating and residual pressures are relieved before
working on a hydraulic system. Shut engine off, and operate all the
controls to relieve any pressure.

4. Use only manufacturer recommended replacement parts. Other parts

may be substandard in fit and quality.

5. Do not set any relief valve higher than recommended by the manufac-
turer. Relief valves should be checked and adjusted only by a trained
service technician. Do not remove or block a relief valve.

6. Observe proper maintenance schedules. Proper maintenance can help

prevent a hazardous condition.

7. Always wear safety goggles or glasses when working on equipment.

WARNING! Escaping fluid under pressure can have sufficient force to pen-
etrate the skin, causing serious personal injury. Fluid escaping
from a very small hole can be almost invisible. Use a piece of
cardboard or wood, rather than hands to search for suspected
leaks.
Keep unprotected body parts, such as face, eyes, and arms as
far away as possible from a suspected leak. Flesh injected
with hydraulic fluid may develop gangrene or other permanent
disabilities.
If injured by injected fluid, see a doctor at once. If your doctor
is not familiar with this type of injury, ask him to research it
immediately to determine proper treatment.

CARDBOARD

HYDRAULIC HOSE MAGNIFYING GLASS

OR FITTING

4216
2-26-92-2
C C
INTERNATIONAL SYMBOLS
As a guide to the operation of your equipment, various international
symbols have been utilized on the instruments and controls. The symbols
are shown below with an indication of their meaning.

Engine speed Alternator charge

Hours recorded Power take-off (on)

Engine water temperature Power take-off (off)

Lights "Tortoise," slow or minimum setting

Horn "Hare," fast or maximum setting

Engine oil pressure Caution

Hazard warning Control lever operating direction

Axle connect Rock shaft (raised)

Axle disconnect Rock shaft (lowered)

Continuously variable Remote cylinder (extended)

Increase Remote cylinder (retracted)

Decrease Remote cylinder (FLOAT)

Diesel fuel Differential lock

Creeper range Read operators manual

High range Neutral

Low range Forward

Reverse

3869
4-14-94-2
D D
PREOPERATION
640 TRENCHER

GENERAL INFORMATION
The purpose of this manual is to assist in setting up, operating and main-
taining your trencher. Read it carefully. It furnishes information and instructions
that will help you achieve years of dependable performance.
Right and left when referred to in this manual are determined by the oper-
ator's right and left when seated at the skid-steer controls in the normal operating
position facing forward.
The illustrations and date in this manual were current at the time of print-
ing, however, we reserve the right to redesign and change the trencher as may
be necessary without notification.

PREPARING THE SKID-STEER LOADER

WARNING! Never let anyone operate this skid-steer loader and trencher
without understanding all of the "Safety Precautions" and "Op-
erating Instructions" located in this manual (see Sections B
and G respectively). Always choose hard, level ground to park
the skid-steer loader on and set the brake so that the skid-
steer loader cannot roll.
There are different motors and hydraulics available on the 640 trencher.
The 640(A) and 640(B) are standard flow trenchers and MUST NOT be used on
high flow systems or damage to the unit will occur. The 640 (C) is a standard flow
trencher but can be used in certain high flow applications with the addition of a
case drain line. The 640(D) and 640 (E) are high flow trenchers and MUST NOT
be used on standard flow hydraulic systems due to unsatisfactory performance.
Please verify hydraulic flow compatibility between the trencher and the skid-steer
before installation.
ROTOR A
NOTE: The recommended GPM SECTION
of your motor can be determined
by measuring the rotor thickness
HYDRAULIC
which will in turn determine the MOTOR
displacement. Refer to the
following chart.

Rotor Dimension Cubic Inch Recommended Motor

"A" Displacement GPM Part Number
.77" 7.7 14-17 #101493 (640A)
1.00" 10.0 18-24 #101494 (640B)
1.25" 12.5 25-28 #102311 (640C)
.87" 15.6 29-35 #101763 (640D)
1.00" 17.9 36-44 #101845 (640E)

9562
11-4-06-3
D D
PREOPERATION
640 TRENCHER

Your skid-steer MUST have auxiliary hydraulics (that are compatible with
the attachment you have received) to run the trencher. If your unit does not have
an auxiliary hydraulic system, contact your skid-steer dealer for information on
availability.

The hydraulic kits for the 640 Trencher include the necessary hoses, fit-
tings and couplers that connect the trencher to the auxiliary hydraulic system of
your skid-steer. Be sure you have the correct hydraulic kit for your trencher and
skid steer.

The 640 trencher was designed to be easy to use and maintain. The
trencher mounts to the universal toolbar/attachment plate of the skid-steer. The
mounting incorporates the quick attach mechanism of the skid-steer for fast, easy
mounting.

See your skid-steer operators manual on "Installing an Attachment" for the

correct installation procedure.

OPTIONS

Eventually you may wish to dig a trench of a depth or width other than
what your unit was originally equipped to dig. The 640 trencher can be fitted with
optional booms, digging chains, sprockets and crumber assemblies to allow you
to dig a variety of different sized trenches with a digging chain option of a tooth
every station or every other station. The following chart will give you an idea of
the different trench depths and widths a properly equipped unit is capable of dig-
ging. For more detailed information on trencher options see Sections I & J of this

TRENCH DEPTHS* TRENCH WIDTHS

30" Depth 6.00" 8.00" 10.00" 12.00"
36" Depth 6.00" 8.00" 10.00" 12.00"
42" Depth 6.00" 8.00" 10.00" NA
48" Depth 6.00" 8.00" NA NA
60" Depth 6.00" NA NA NA

*Trench depths are given with the digging boom at an optimum 65° digging
angle and the skid shoe touching the ground. Trenches of
various depths can be made by varying the digging angle and raising
the trencher up higher. These methods are less efficient however.

9563
10-4-06-2
D D
PREOPERATION
TRENCHER MAJOR COMPONENT NOMENCLATURE
640TRENCHER

GENERAL INFORMATION

The purpose of this page is to acquaint you with the trencher and the
names of its various components. This knowledge will be helpful when
reading through this manual or when ordering service parts.

HYDRAULIC MOTOR
SIDE SHIFT
LOCKING PIN SIDE SHIFT
MOUNTING
CRUMBER BOOM
FRAME
ADJUSTMENT

BUILT-IN SKID
SHOE

CRUMBER BOOM

CRUMBER END

AUGER WITH
SLINGER
TOOTH

CHAIN TENSION
ADJUSTMENT
DIGGING CHAIN

CRUMBER
SHOE
DIGGING BOOM

9564
4-15-04
E E
MOUNTING KIT INSTALLATION
HYDRAULIC KITS

4
14
5

7
8 10

15
9
11
12

13
7

9565
4-16-04
E E
MOUNTING KIT INSTALLATION
STANDARD FLOW HYDRAULIC KITS

NO REQ'D PART NO. DESCRIPTION

1 1 22519 Male Quick Coupler .50" Body 12FBo

1 86863 Male Quick Coupler .50" Body 8NPTF
1 84921 Male Quick Coupler .62" Body 12FBo

2 1 22518 Female Quick Coupler .50" Body 12FBo

1 84922 Female Quick Coupler .62" Body 12FBo
1 86862 Female Quick Coupler .50" Body 8NPTF

3 2 38221 Hose Assembly .62" X 108" 12MBo-10FJX

2 38224 Hose Assembly .62" X 108" 8MP-10FJX
2 38223 Hose Assembly .62" X 123" 8MP-10FJX
2 38231 Hose Assembly .62" X 123" 12MBo-10FJX

4 1 1031* .50" UNC X 3.25" Hex Capscrew

5 2 22315* Hose Clamp Plate

6 1 22316* Hose Clamp Cushion .62" Hose

7 2 105840* Fender Washer
8 1 1753* .50" UNC Lock Nut
9 1 RHW8618* Hose Clamp Spring - New Style
10 - 22288 Replacement Hose Clamp Spring - Old Style
11 1 1020 .31" UNC X .50" Hex Capscrew
12 1 1502 .31" Lock Washer
13 1 1513 .31" Flat Washer
14 - 17143 Replacement Hose Clamp
(Located in Mainframe Assembly)
15 2 3431 Straight Adapter 10MBo-10MJ

NOTE: Due to the various different skid steer applications that the 640 Trenchers
install on, all hose lengths and couplers are listed for your convenience.

* New Style Hose Clamp Assembly #103454 contains all parts marked with an
asterisk. Order Clamp Assembly #103454 and tap .31" UNC hole into top of
mainframe to update to new style clamp spring.

9566
10-4-06-2
E E
MOUNTING KIT INSTALLATION
HIGH FLOW HYDRAULIC KITS

2
1

4
3
5

17 8

9
8
13
18
10
11
12
14
19
15
16

10783
10-3-06
E E
MOUNTING KIT INSTALLATION
HIGH FLOW HYDRAULIC KITS
NO REQ'D PART NO. DESCRIPTION

1 1 22521 Male Quick Coupler .75" Body

1 84922 Male Quick Coupler .62" Body

2 1 22520 Female Quick Coupler .75" Body

1 84921 Female Quick Coupler .62" Body

3 2 37769 Hose Assembly .75" X 108" 12MBo-12FJX

2 38279 Hose Assembly .75" X 123" 12MBo-12FJX

4 1 84923 Male Quick Coupler .38" Body

5 1 3269 Straight Connector 8MBo-6MJ

6 1 38203 Hose Assembly .25" X 110" 6FJX-6FJX

1 38280 Hose Assembly .25" X 125" 6FJX-6FJX
7 1 1031* .50" UNC X 3.25" Hex Capscrew

8 2 22315* Hose Clamp Plate

9 1 22317* Hose Clamp Cushion .75" Hose
10 2 105840* Fender Washer

11 1 1753* .50" UNC Lock Nut

12 1 RHW8618* Hose Clamp Spring - New Style
13 1 22288 Replacement Hose Clamp Spring - Old Style

17 1 22315 Replacement Hose Clamp Plate

1 22317 Replacement Hose Clamp Cushion .75" Hose
1 1027 .31" UNC X 2.25" Hex Capscrew
(Replace Clamp Located on Mainframe to accomodate the larger
hoses used on High Flow systems.)

18 2 3409 Straight Adapter 16MBo-12MJ

19 1 30142 90° Elbow 8MBo-6MJ

NOTE: Due to the various different skid steer applications that the 640 Trenchers
install on, all hose lengths and couplers are listed for your convenience.

* New Style Hose Clamp Assembly #103455 contains all parts marked with an
asterisk. Order Clamp Assembly #103455 and tap .31" UNC hole into top of
mainframe to update to new style clamp spring.

10784
10-3-06
E E
MOUNTING KIT INSTALLATION
HYDRAULIC SIDE SHIFT KIT #89279
WITHOUT SELECTOR VALVE
(FOR SECONDARY AUXILIARY HYDRAULICS)

5
-5-01
E E
MOUNTING KIT INSTALLATION
HYDRAULIC SIDE SHIFT KIT #89279
WITHOUT SELECTOR VALVE
(FOR SECONDARY AUXILIARY HYDRAULICS)

NO REQ'D PART NO. DESCRIPTION

1 2 1149 .75" UNC X 5.00" Hex Capscrew

2 1 89101 Cylinder Mount - Mounting Frame
3 2 1628 .88" UNC X 4.50" Hex Capscrew
4 4 1845 .88" Flat Washer
5 2 1739 .88" UNC Nylock Nut

6 1 89110 Side Shift Cylinder Assembly

7 2 1092 .50" UNC X 2.00" Hex Capscrew
8 1 89106 Cylinder Mount - Mainframe
9 1 89148 Angle Mount
10 4 1646 .50" Hard Flat Washer

11 4 1841 .50" UNC Deformed Oval Lock Nut

12 2 1089 .50" UNC X 1.25" Hex Capscrew

8326
2-5-01
E E
MOUNTING KIT INSTALLATION
HYDRAULIC SIDE SHIFT KIT #101510
(WITH SELECTOR VALVE)

3
10
11
9

3 12
4

5 4
6

8
7 5
13 6

15
14

16

16 19
20

18 21
17
22
23

24

95 1
4- 0-04
E E
MOUNTING KIT INSTALLATION
HYDRAULIC SIDE SHIFT KIT #101510
(WITH SELECTOR VALVE)

NO REQ'D PART NO. DESCRIPTION

1 1 38228 Hose .25" x 51" (6FJX-6FJX 45°)

2 1 38227 Hose .25" x 48" (6FJX-6FJX 45°)
3 2 30201 Reducer Fitting 12MBo - 6MJ
4 2 30165 90° Elbow 12MBo - 10MJ
5 2 30198 Straight Adapter 12MBo - 10FORFS

6 2 3122 90° Elbow 10MBo-10MJ

7 2 1226 .38" UNC Hex Nut
8 2 1503 .38" Lock Washer
9 1 22566 Selector Valve
10 1 101511 Valve Mounting Bracket

11 2 1051 .38" UNC X 3.00" Hex Capscrew

12 2 38226 Hose .62" x 18" (10FJX-12MBo)
13 2 1149 .75" UNC X 5.00" Hex Capscrew
14 1 89101 Cylinder Mount - Mounting Frame
15 2 1171 .88" UNC X 4.50" Hex Capscrew

16 4 1845 .88" Flat Washer

17 2 1739 .88" UNC Nylock Nut
18 1 89110 Side Shift Cylinder Assembly
19 2 1094 .50" UNC X 2.50" Hex Capscrew
20 1 89106 Cylinder Mount - Mainframe

21 1 89148 Angle Mount

22 4 1646 .50" Hard Flat Washer
23 4 1841 .50" UNC Deformed Oval Lock Nut
24 2 1089 .50" UNC X 1.25" Hex Capscrew

9572
4-30-04
E E
MOUNTING KIT INSTALLATION
SIDE SHIFT CYLINDER ASSEMBLY #89110

-5-01
E E
MOUNTING KIT INSTALLATION
SIDE SHIFT CYLINDER ASSEMBLY #89110

NO REQ'D PART NO. DESCRIPTION

1 1 89111 Cylinder Tube

2 1 6992 Piston
3 1 64891 Cylinder Gland
4 1 88464 Cylinder Rod
5 1 1482 Hex Nut

6 1 4637* O'Ring
7 1 4636* Piston Ring
8 1 4635* O'Ring
9 1 52644 Washer
10 1 4633* O'Ring

11 1 4634* Back-Up Washer

12 1 45262* Poly Pak Seal
13 1 7164* Retaining Ring
14 1 4981* Rod Wiper

NOTE: Seal Kit #45581 includes all parts marked with an asterisk (*).
Parts are not sold separately.

8328
2-5-01
E E
MOUNTING KIT INSTALLATION
640 TRENCHER HYDRAULIC SIDE SHIFT

GENERAL INFORMATION
-

MOUNTING INSTRUCTIONS
1 5 4 50

9101 5
5 00
1 1

FIGURE
REMOVE THE E ISTING . . CAPSCREW
AND REPLACE WITH . . CAPSCREW
AND E ISTING LOCK NUT AFTER CYLINDER
MOUNT IS INSTALLED.

SLIDE CYLINDER MOUNT INTO

PLACE FROM THE FRONT OF SIDE
SHIFT FRAME.

BRACE PLATE
ON SIDE SHIFT SIDE SHIFT
FRAME. MOUNTING FRAME

CYLINDER MOUNT

50
00
50 1 5

NOTE If installing Kit ith

selector al e use the . . capscre s through the cylinder
mount trencher and angle mount. The al e mounting rac et ill e
olted to this same location in step . 956
4- 0-04
E E
MOUNTING KIT INSTALLATION
640 TRENCHER HYDRAULIC SIDE SHIFT

FIGURE
BACK OF TRENCHER

. . CAPSCREW
FLAT WASHER LOCK NUT
. . CAPSCREW IF ANGLE MOUNT
INSTALLING KIT WITH SELECTOR
VALVE

. . CAPSCREW CYLINDER MOUNT

FLAT WASHER LOCK NUT

. PLATE ON TRENCHER

4 9110
4 50

FIGURE
. . CAPSCREW
FLAT WASHERS LOCK NUT

BACK OF
CYLINDER MOUNT TRENCHER

SIDE SHIFT CYLINDER MOUNT

MOUNTING
FRAME

SIDE SHIFT CYLINDER

5 9 9
101510
6
NOTE Due to the different locations of the secondary hydraulics on the
arious s id steer loaders hoses are not included in this it. To determine
the hose lengths for your s id steer measure the distance from the second
ary hydraulic couplers to the side shift cylinder ports hen the loader is fully
raised and tilted do n. The hose connection at the cylinder is FJ and
the hose si e should e . diameter ith PSI or ing pressure
Route hoses in such a fashion to pre ent pinching and chafing. 956
4- 0-04
E E
MOUNTING KIT INSTALLATION
640 TRENCHER HYDRAULIC SIDE SHIFT

6 90 0165
0 01
-
019 90 1
4

00 -
4
SELECTOR VALVE
FIGURE VALVE MOUNTING
BRACKET
REDUCER

. . CAPSCREW

ELBOW
ELBOW

ELBOW
ELBOW

STRAIGHT ADAPTER STRAIGHT ADAPTER

. LOCK WASHER
. HE NUT

50 50

FIGURE

ANGLE MOUNT
. . CAPSCREW

. FLAT WASHER LOCK NUT

CYLINDER MOUNT
VALVE MOUNTING BRACKET
WITH SELECTOR VALVE
ALREADY INSTALLED

9569
4- 0-04
E E
MOUNTING KIT INSTALLATION
640 TRENCHER HYDRAULIC SIDE SHIFT

9
90

1 6
6

FIGURE HOSE
SELECTOR VALVE TO
MOTOR
POWER RETURN
HOSES TO SKID STEER
HOSE VALVE
SIDE SHIFT CYLINDER TO MOUNTING
SELECTOR VALVE
BRACKET

HOSE
SIDE SHIFT CYLINDER TO
SELECTOR VALVE

SELECTOR
VALVE

10 1 90
6

11 5

95 0
4- 0-04
F F
TRENCHER INSTALLATION
640 TRENCHER

GENERAL INFORMATION

The following instructions will help you to mount your trencher on your
skid-steer. The trencher uses the skid-steer's quick-change attaching system for
ease on installation. Therefore, if you know how to attach the skid-steer loader
bucket, attaching the trencher should prove no problem.

MOUNTING INSTRUCTIONS

1. If you have not done so already, remove the steel shipping banding from
around the trencher and skid.

2. Set the quick-change attaching lock on the skid-steer toolbar to the un-
locked position. Lower the skid-steer loader arms and tilt the toolbar down
low enough to pass under the top lip of the mounting kit adaptor plate.

3. Following all standard safety practices, start the skid-steer and slowly
drive it in back of the trencher. Position the skid-steer so that the top of
the toolbar is in under the lip on the adaptor plate.

4. Tilt the toolbar back to hook the trencher onto the toolbar. It may be nec-
essary to lift the loader arm somewhat.

5. Set the quick-change attaching lock to the locked position to secure the
trencher. It may be necessary to raise, lower, or tilt the toolbar in order to
the trencher and toolbar to properly align so the locking mechanism can
be activated.

6. With the auxiliary hydraulic system turned off, connect the hydraulic hoses
to their proper auxiliary couplers. NOTE: Be sure to install a case drain
OLQHLILQVWDOOLQJDKLJKÀRZWUHQFKHURQWRDKLJKÀRZVNLGVWHHU

7. Complete the predelivery checklist located in the back of this manual (Sec-
tion R). Trencher installation is not complete.

9573
10-4-06-2
G G
OPERATING INSTRUCTIONS
CONTROLS
640 TRENCHER

GENERAL INFORMATION

Simplicity of operation is one of the key features of the 640 trencher.

The trenchers themselves have no controls, just a few adjustments to
check. It is important however, to be familiar with, and know the controls
and adjustments on both the trencher and the skid steer. Such knowledge
is crucial for safe, efficient operation of equipment. Take the time to learn
how they operate now.

SKID STEER

Your trencher mounts to the toolbar / attachment plate of the skid

steer. Due to this arrangement, thorough knowledge of the skid steer con-
trols is necessary for trencher operation. Read your skid steer owner's
manual for information regarding skid steer operation before attempting to
use the trencher.

RAISING / LOWERING THE TRENCHER

Raise / lower the trencher unit by raising / lowering the skid steer
loader arms through their appropriate skid steer controls. (See Figure #1)

CAUTION! Become aware of any overhead power or telephone lines, tree

limbs, etc., that the raised trencher could come into contact
with. Contact with electrical lines could cause serious injury or
death.

FIGURE #1
RAISE

SKID STEER TRENCHER

LOADER ARM

LOWER

9574
4-19-04
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OPERATING INSTRUCTIONS
CONTROLS
640 TRENCHER

TILTING THE TRENCHER

Tilt the trencher unit up or down by tilting the toolbar / attachment

plate back or forward through its skid steer control. We recommend a 60°
digging angle for general trenching as measured from ground level (the
horizon). (See Figure #2)

FIGURE #2
SKID STEER LOADER ARM

UP

TOOLBAR / ATTACHMENT PLATE

(LOCATED INSIDE SIDE SHIFT MOUNTING)

DOWN

SIDE SHIFTING THE TRENCHER

Your trencher has an adjustment to shift the whole unit to the side on
its own mount. To shift the unit sideways, first remove the locking pin from
the back of the unit.

Lower trencher until trencher frame is resting on the ground, then

counter-rotate the tires so that the skid steer moves in a sideways motion.
Continue moving until side shift holes are aligned and replace locking pin.
IMPORTANT: Always reinstall the locking pin to prevent the trencher from
shifting sideways during operation.
NOTE: Slight shifting of the trencher from side to side may be necessary to
align the side shift holes for reinstalling the locking pin.
9575
4-19-04
G G
OPERATING INSTRUCTIONS
CONTROLS
640 TRENCHER

STARTING AND STOPPING THE TRENCHER

Power to the trencher is supplied by oil from the skid steer auxiliary
hydraulic system, which passes through the hydraulic hoses and into the
trencher's hydraulic motor. (Check the hydraulic flow compatibility between
the trencher and the skid-steer before operation.) See Section "D"
Preoperation.

The trencher unit itself does not have an on/off control but is oper-
ated by the skid steer auxiliary hydraulic control mechanism. To start the
trencher, engage the auxiliary hydraulics. (See your skid steer owner's
manual.) To stop the trencher, disengage the auxiliary hydraulics.

TRENCHER SPEED CONTROL

Again it may be noted that power to the trencher is supplied by the

skid steer's auxiliary hydraulics. Trencher speed and power are determined
by the flow of oil coming out of the auxiliary system, which in turn is de-
pendent upon skid steer engine speed. To increase trencher speed, increase
skid steer engine speed, to decrease trencher speed, decrease skid steer
engine speed.

When first starting a trench throttle down the skid steer engine to half
throttle. This will reduce the shock to the skid steer and trencher when the
digging teeth first contact the ground. Once the trench is started, set the
engine back to full throttle.

For general use operate the trencher with the skid steer engine at full
throttle to provide maximum power to the auxiliary hydraulics and thus the
trencher.

AUGER HEIGHT

The auger is fixed to the trencher mainframe and has no separate

adjustment. To raise the auger, raise the trencher as previously described.
This will raise the auger and thus leave the dirt or spoil closer to the trench.

Lowering the trencher will cause the auger to lower, moving the spoil
away from the trench. The built-in skid shoe on the 640 trencher will pre-
vent the auger from being lowered to the extent that the auger itself starts
to dig in the ground as this will greatly reduce efficiency.
9576
4-19-04
G G
OPERATING INSTRUCTIONS
CONTROLS
640 TRENCHER

It should be noted that raising or lowering the trencher to change the

auger height will also change the trenching depth. You will need to com-
pensate for this by changing the tilt of the trencher down or up accordingly.
(See Figure #3)

FIGURE #3
TRENCHER

AUGER
AUGER

SPOIL
SPOIL

CRUMBER SHOE/BAR ADJUSTMENT

The purpose of the crumber shoe is to keep any loose dirt in the
trench close enough to the digging chain so that the digging teeth can grab
it and remove it. This will give you a cleaner finished trench. Your trencher
has an adjustable crumber bar that can be lengthened or shortened to bring
the crumber shoe closer or farther from the digging chain.

To adjust the crumber bar length, loosen the two jam nuts found at
the end of the mainframe crumber bar tube. Slide the bar in or out to
achieve the desired spacing (we suggest a distance of about 4" between
crumber shoe and digging teeth for best overall results). Tighten the set
screws and jam nuts when finished. (See Figure #4 on the next page)

9577
4-19-04
G G
OPERATING INSTRUCTIONS
CONTROLS
640 TRENCHER

FIGURE #4
SET SCREW

MAINFRAME CRUMBER CRUMBER BAR

BAR TUBE
JAM NUT

CHAIN TENSION ADJUSTMENT

When trenching, the digging chain tension should be adjusted so that

the chain is as loose as possible, without jumping off the sprocket or idler
wheel. To do this, an adjustment is provided on the digging boom.

These booms have an adjusting bolt on each side at the trencher end
of the boom. The head of the bolts are kept from rotating by special tubes
welded onto the mainframe. The end of the bolt rests in a tube welded to
the boom. Each bolt has a jam nut and a .75" hex nut on it. To tighten the
chain, "back off" the jam nut from the regular nuts. Now turn the standard
nuts off the adjusting bolts. This will push the boom out and thus tighten
the chain. Retighten the jam nut when finished. To loosen the chain, fol-
low the same procedure, except turn the hex nut onto the adjusting bolt.
(See Figure #5)
ADJUSTING BOLTS

FIGURE #5

DIGGING BOOM

TRENCHER
MAINFRAME

.75" JAM NUT

.75" HEX NUT

9578
4-19-04
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OPERATING INSTRUCTIONS
CONTROLS
640 TRENCHER

This procedure must be done simultaneously to both adjusting bolts to

prevent the boom from becoming wedged onto its mount.

CAUTION! Never work on, or make adjustments to any part of the tren-
cher while the unit is running. You could get caught in the
digging teeth which could cause severe injury or death.

It is common for your trencher to need its digging chain tightened

after the first 10 to 20 minutes of operation as the chain and sprocket seat
themselves.

9579
4-19-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

GENERAL INFORMATION
The design of your trencher makes it relatively simple to use. With
the help of the information in this section and a little practice you should
become proficient in it's operation in no time. Observe the following points
to obtain the best results with the least amount of wear on the machine.
Read the "Safety Precautions" section of this manual before you begin.
(See Section B)
CAUTION! Operate the trencher only when seated at the skid steer con-
trols.
Do not operate the skid steer without proper ROPS (Roll-Over-
Protective-Structure), seat belt, and hard hat.
Pay attention to the job at hand. Be alert to the possibilities of
others in the work area.
Never let anyone work around, or perform maintenance on the
trencher while it is running.
Always use a crumber assembly on the trencher.
BEFORE YOU START TRENCHING
Before any excavating is started, it is always a good idea to plan out
the job first. Various things need to be considered and taken into account
prior to the actual trenching. The operator should inspect the job site and
take notice on any potential hazards in the area. He should have a complete
understanding of the task he is expected to perform. Figure out what will
be done with the spoil (excavated soil), will it be used to backfill or be
trucked out? What are the soil conditions like? Will you have to work
around others? Etc.
WARNING! Check the prospective trenching area for hidden utility lines
before operating the trencher. Contacting a utility line with the
trencher could cause electrocution resulting in death. Call all
utility companies and have them plot out all their lines first. If
you damage a utility line, shut off the equipment at once and
contact the affected utility immediately.
Once you have become familiar with the job site and understand the
job requirements it is time to set up for the actual trenching. Check the soil
type (hard, soft, rocky, etc.) and the trenching requirements (how deep,
wide, etc.). Install the proper digging chain, sprocket, boom, crumber bar
and shoe for the job at hand. Information on chains, sprockets, booms,
crumber bars and shoes may be found in Sections I and J.
5788
2-26-92
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

Locate the trencher on the mount with the side shift mechanism (as
explained earlier in this section) where it will be most efficient and easy to
use.

Mark off the area to be trenched out. This can be done with pow-
dered lime, chalk, or a guide string and stakes. Block off the area from all
bystanders if possible.

STARTING THE TRENCH

Position the skid steer with the trencher boom directly over the center
of the trench layout. It will take about 4' of trenching before the trencher
will be able to operate at the desired level, so plan for this and position the
trencher about 4' behind where you want the actual trench to start.

NOTE: The skid steer is driven in reverse when trenching. You cannot
trench driving the skid steer forward.

Raise the trencher with the skid steer loader arms and tilt the trencher
at a 45° angle. (See Figure #6) Position the unit so that the digging teeth
are just above ground level.

Set the skid steer throttle at half speed. Start the digging chain by
engaging the skid steer auxiliary hydraulic system.

FIGURE #6
TOOLBAR LOADER ARM

TILT DOWN 45°

RAISE

TRENCHER

SKID STEER

9580
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

CAUTION! When lowering a moving digging chain to the ground the force
of the teeth grabbing the ground will try to pull the trencher
suddenly forward. Be prepared. Have the brake on the skid
steer set to help counteract the force.

Slowly lower the digging chain into the ground to start the trench.
Do this by lowering the trencher with the loader arms. Continue lowering
the unit until the crumber end rolls all the bay back on the crumber bar
(See Figure #7)

IMPORTANT: After the crumber end has rolled all the way back, do not
lower the trencher any farther without moving the skid steer in reverse.
Failure to do so could result in bending of the crumber boom, which is not
covered by warranty.
LOADER ARM
FIGURE #7

CRUMBER BOOM

LOWER
CRUMBER END

Once the crumber end has "bottomed out", begin slowly creeping the
skid steer in reverse while continuing to lower the loader arms. When near-
ing the required depth, stop lowering and tilt the trencher to a 60° to 65°
angle. A 60° - 65° angle works best for general trenching. (See Figure #8)

WARNING! Be alert to what is happening around you. Look behind you

before reversing the skid steer to trench. Be aware of any
person or thing in the path of the skid steer. Observe any
terrain changes such as drop-offs or soft ground.
9581
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

FIGURE #8

CREEP IN REVERSE

LOWER

When trenching, remember to keep in mind the spoil placement.

Position the trencher so that the auger floats at ground level to move spoil
away from the trench. (See Figure #9)

FIGURE #9

NOTE DIGGING ANGLE

SPOIL PILE
TRENCH

AUGER AT
GROUND LEVEL

9582
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

Raise the trencher so that the auger rides above the ground level to
leave the spoil beside the trench. The higher the auger, the closer to the
trench the spoil will be placed. You may find that it generally takes less
power to run the digging chain if the auger runs 3" - 6" (inches) off the
ground, and thus increasing the potential footage of trench produced per
hour. The higher you want the auger, the more vertical you will have to tilt
the trencher to achieve the same trench depth. (See Figure #10)
FIGURE #10 INCREASED DIGGING ANGLE TO
ACHIEVE THE SAME TRENCH DEPTH
WITH AUGER RAISED AS IN FIGURE #9

SPOIL PILE
TRENCH

AUGER RAISED ABOVE

GROUND LEVEL

With the desired trench depth reached, advance the skid steer throttle
to the desired engine RPM (we suggest full throttle for maximum digging
power). Continue creeping the skid steer in reverse. Monitor the skid steer
hydraulic oil pressure and temperature gauges as you trench. If hydraulic
oil temperature or pressure gets too high, reduce skid steer creeping speed
to reduce the load on the auxiliary hydraulic system.

IMPORTANT: Trying to trench at a speed faster than the auxiliary hydraulic

system can handle could cause the trencher to stall. Continued stalling in a
short period of time can cause excessive oil temperature which can lead to
pump failure. Do not try to trench too much too quickly. If oil temperature
becomes too hot, stop the trencher and allow the oil to cool.

STALLING THE TRENCHER

If the trencher stalls while digging, move the skid steer forward
slightly to free the trencher. You may be able to free up the digging chain
by changing its direction of travel with the auxiliary hydraulic controls.
Repeated stalling of the trencher will cause oil to overheat rapidly and
should be avoided.

9583
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

TURNING WHILE TRENCHING

Gradual turns can be made while trenching. However, the tightness
of the turn is directly proportional to the angle and length of the boom. In
other words the greater the angle of the trencher boom to the ground level,
the sharper the turn that can be trenched. (See Figures #11 & #12) Also
the shorter the boom length the sharper the possible turn. Remember, the
greater the increase in boom angle the higher the unit will have to be raised
out of the trench to keep a unified trench depth. Shallow boom angles will
severely limit turning ability.
IMPORTANT: Turning too tightly while trenching will cause the trencher to
jam in the trench and stall, leading to excessive oil temperatures. Turning
too tightly can also cause the trencher boom to bend. Take it easy when
turning. Proceed slowly with caution.
FIGURE #11
TURNING WITH THE BOOM
AT A 90° DIGGING ANGLE
TOP VIEW

FIGURE #12

TURNING WITH THE BOOM AT

A 60° DIGGING ANGLE

TOP VIEW

9584
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

MAKING SHARP TURNS

To make sharp turns and 90° angles you will have to dig two
trenches. Dig the first trench as you normally would. Then reposition the
unit and dig the second trench at the appropriate angle. Be sure to take
into account the extra lead-in space needed for the trencher to get down to
the desired trench depth. (See Figure #13)

FIGURE #13 1st TRENCH

TOP VIEW

LEAD-IN
2nd TRENCH

RECOMMENDED DIGGING ANGLES

A 90° digging angle is recommended for use in rock and frost condi-
tions, and when trenching sharp corners. The 90° angle reduces excessive
side pressure on the boom and digging chain when trenching corners. (See
Figure #14)

A 60° - 65° digging angle is recommended for normal trenching. At

this angle there will be less carry-over, and a cleaner trench bottom can be
maintained than at a 90° angle. (See Figure #14)
FIGURE #14 GROUND LEVEL /
HORIZON

90° DIGGING 65° DIGGING

ANGLE ANGLE

9585
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

TRENCHING WITHOUT THE CRUMBER ASSEMBLY

WARNING! The crumber bar and crumber shoe assembly are there for a
reason, YOUR SAFETY! There are a few instances where
removal may be necessary however. In these cases operate
with extreme caution. Reinstall the crumber bar and crumber
shoe as soon as possible.

You can use your trencher to dig under obstacles such as sidewalks.
To do so, remove the crumber shoe and bar assembly and start your trench
as before within a foot of the sidewalk. With the crumber bar and shoe
removed you can start the trench vertically without any lead-in space.

When the desired depth has been reached, tilt the trencher at a 60°
angle while digging, then creep the skid steer forward and trench under the
sidewalk. Be careful not to contact the edge of the sidewalk with the dig-
ging teeth.

After you have gone as far as you can without contacting the side-
walk, drive the skid steer in reverse to clear the sidewalk and remove the
trencher from the trench. Line up the unit on the other side of the walk and
continue to trench as described above until the two trenches are connected.
(See Figure #15)
FIGURE #15
CREEP FORWARD
CRUMBER BAR AND SHOE
ASSEMBLY REMOVED. REPLACE
AS SOON AS POSSIBLE

SIDEWALK
1st TRENCH

2nd TRENCH

AVOID CONTACTING SIDEWALK

Reinstall the crumber bar and crumber shoe assembly immediately.

Some spoil will be left in the trench since the crumber was removed during
the operation.

9586
4-20-04
G G
OPERATING INSTRUCTIONS
OPERATING TECHNIQUES
SKID STEER TRENCHERS

ENDING A TRENCH

When you have dug your trench, remember that the trencher boom is
at an angle, and that you must continue trenching until the end of the boom
has dug past the proposed end of the trench. Once the end of the trench
has been dug, keep the trencher running and lift the skid steer loader arms
to lift the unit clear of the trench. When the trencher has cleared the
trench, disengage the auxiliary hydraulics to stop the trencher. Drive the
skid steer away from the trench.

TRANSPORTING THE TRENCHER

When transporting the trencher, remember to keep the trencher as

low to the ground as is practical. The lower the trencher rides, the more
stable the skid steer will be. You do not want the trencher so low that the
digging teeth touch the ground in rough terrain. Shut off the trencher be-
fore moving it away from the trench. Never transport the trencher around
the job site or anywhere else while the digging chain is moving.

TRENCHER PERFORMANCE

Remember that your trencher's performance is directly related to the

power available at you skid steer's auxiliary hydraulic system. If the tren-
cher seems to lack power or speed, it may be due to your skid steer's lack
of sufficient auxiliary power.

Trencher performance is also related to how well it's maintained,

digging tooth wear, and type and size of digging chain, crumber boom and
shoe used. For more information on proper maintenance and chain wear
see Section L. For information on chain, sprocket, boom, and crumber
options see Sections I and J. If problems arise see "Trouble Shooting"
Section N.

5796
2-26-92
I I
TRENCHER ASSEMBLY
640 STANDARD FLOW TRENCHER

5
27

26

24 7
9 8 6

10 24
13 11
12 25
8
9
14
16
17
15 18
19
20

21

23 14
22

9555
10-3-06-2
I I
TRENCHER ASSEMBLY
640 STANDARD FLOW TRENCHER

NO REQ'D PART NO. DESCRIPTION

1 1 79113 Lock Pin

2 1 88550 Side Shift Mounting Frame
3 2 78824 Side Shift Inner Tube
4 4 1148 .75" UNC X 4.50" Hex Capscrew
5 4 1534 .75" UNC Lock Nut

6 1 100245 Trencher Mainframe

- 17143 Replacement Hose Clamp (1.00" OD Hose)
7 1 100710 Motor Guard
8 15 1646 .50" Hard Flat Washer
9 8 1089 .50" UNC X 1.25" Hex Capscrew
10 2 1769 .50" UNC X 1.00" Sq. Head Setscrew

11 2 1242 .50" UNC Jam Nut

12 8 1090 .50" UNC X 1.50" Hex Capscrew
13 1 101493 Hydraulic Motor 14-18 GPM
1 101494 Hydraulic Motor 18-26 GPM
1 102311 Hydraulic Motor 25-28 GPM (If using this
    PRWRURQDKLJKÀRZXQLWDFDVHGUDLQOLQH
MUST be installed.)
1 100813 Motor Gasket
14 4 1505 .50" Lock Washer
15 1 19857 Planetary Assembly

16 1 53742 Key .38" Sq. x 3.00"

17 - 31683 Replacement Planetary Shaft Seal
18 1 100274 Dirt Shield
19 1 86191 Sprocket - 12 Tooth
20 2 1095 .50" UNC X 2.75" Hex Capscrew

21 1 100757 Auger with Slinger

22 2 1228 .50" UNC Hex Nut
23 2 1572 .50" UNC X .50" Setscrew
24 3 1841 .50" UNC Deformed Lock Nut
25 2 21034 Angle Indicator

26 1 1088 .50" UNC X 1.00" Hex Capscrew

27 1 101544 Cover

9556
10-3-06-2
I I
TRENCHER ASSEMBLY
640 HIGH FLOW TRENCHER

5
27

26

24 7
6

9
13 28
8
14 10 24
11
29 25
30
12
8

16
31
32
17
18
15 19
20

21

23 14
22

10785
10-3-06
I I
TRENCHER ASSEMBLY
640 HIGH FLOW TRENCHER

NO REQ'D PART NO. DESCRIPTION

1 1 79113 Lock Pin

2 1 88550 Side Shift Mounting Frame
3 2 78824 Side Shift Inner Tube
4 4 1148 .75" UNC X 4.50" Hex Capscrew
5 4 1534 .75" UNC Lock Nut

6 1 100245 Trencher Mainframe

- 17143 Replacement Hose Clamp (1.00" OD Hose)
7 1 101796 Motor Guard
8 15 1646 .50" Hard Flat Washer
9 8 1089 .50" UNC X 1.25" Hex Capscrew
10 2 1769 .50" UNC X 1.00" Sq. Head Setscrew

11 2 1242 .50" UNC Jam Nut

12 8 1090 .50" UNC X 1.50" Hex Capscrew
13 1 101763 Hydraulic Motor 29-35 GPM
1 101845 Hydraulic Motor 36-44 GPM
14 6 1505 .50" Lock Washer
15 1 19857 Planetary Assembly

16 1 53742 Key .38" Sq. x 3.00"

17 - 31683 Replacement Planetary Shaft Seal
18 1 100274 Dirt Shield
19 1 86191 Sprocket - 12 Tooth
20 2 1095 .50" UNC X 2.75" Hex Capscrew

21 1 100757 Auger with Slinger

22 2 1228 .50" UNC Hex Nut
23 2 1572 .50" UNC X .50" Setscrew
24 3 1841 .50" UNC Deformed Lock Nut
25 2 21034 Angle Indicator

26 1 1088 .50" UNC X 1.00" Hex Capscrew

27 1 101799 Cover
28 4 1964 .50" UNC X 1.25" Hex Capscrew - Grade 8
29 1 101864 Motor Gasket
30 1 100906 Motor Adapter

31 4 10108 .50" UNC X 1.00" Socket Head Capscrew

32 1 100813 Motor Gasket
10786
10-3-06
I I
TRENCHER ASSEMBLY
30" BOOM AND CRUMBER
ASSEMBLY #89281

7
8

5
3 2
5
9
4
2

3
2
14
15

2 1

10
11
12 13
19
10

17

18
16

22
21
20

8282
12-12-00
I I
TRENCHER ASSEMBLY
30" BOOM AND CRUMBER
ASSEMBLY #89281

NO REQ'D PART NO. DESCRIPTION

1 4 1101 .50" UNC x 4.50" Hex Capscrew
2 16 1646 .50" Hard Flat Washer
3 4 1841 .50" UNC Lock Nut
4 4 21061 Lever Arm
5 4 1514 .38" Flat Washer

6 1 89278 Crumber End

7 2 1226 .38" UNC Hex Nut
8 2 1503 .38" Lock Washer
9 2 1044 .38" UNC x 1.25" Hex Capscrew
10 2 54067* Idler Spacer

11 1 79103* Idler Wheel

12 1 8085* Idler Bearing
13 1 53988* Idler Bearing Hub
14 2 40161 Decal - Stand Clear
15 1 89276 30" Crumber Bar / Personal Restraint Bar

16 1 53138 Boom Bushing

17 1 80087 30" Boom
18 1 53132 1.12" Square Pin
19 1 1548 .75" UNC x 1.25" Nylock Capscrew
20 2 62702 Adjusting Bolt

21 2 1245 .75" UNC Jam Nut

22 2 1231 .75" UNC Nut

NOTE: Idler Roller Assembly Repair Kit #80868 includes all parts marked
with an asterisk (*).

8283
12-12-00
I I
TRENCHER ASSEMBLY
36" BOOM AND CRUMBER
ASSEMBLY #89282

7
8
5
3
2
5
9

4
2
3

2
14

15
1
2

10
11
21 12 13
18 10

17

20 19
16
16

24
23
22

8284
12-12-00
I I
TRENCHER ASSEMBLY
36" BOOM AND CRUMBER
ASSEMBLY #89282

NO REQ'D PART NO. DESCRIPTION

1 4 1101 .50" UNC x 4.50" Hex Capscrew
2 16 1646 .50" Hard Flat Washer
3 4 1841 .50" UNC Lock Nut
4 4 21061 Lever Arm
5 4 1514 .38" Flat Washer

6 1 89278 Crumber End

7 2 1226 .38" UNC Hex Nut
8 2 1503 .38" Lock Washer
9 2 1044 .38" UNC x 1.25" Hex Capscrew
10 2 54067* Idler Spacer

11 1 79103* Idler Wheel

12 1 8085* Idler Bearing
13 1 53988* Idler Bearing Hub
14 2 40161 Decal - Stand Clear
15 1 89276 36" Crumber Bar / Personal Restraint Bar

16 2 53138 Boom Bushing

17 1 79085 36" Boom
18 1 53188 Spring
19 1 53132 1.12" Square Pin
20 1 62717 Boom End

21 1 1548 .75" UNC x 1.25" Nylock Capscrew

22 2 62702 Adjusting Bolt
23 2 1245 .75" UNC Jam Nut
24 2 1231 .75" UNC Nut

NOTE: Idler Roller Assembly Repair Kit #80868 includes all parts marked
with an asterisk (*).

8285
12-12-00
I I
TRENCHER ASSEMBLY
42" BOOM AND CRUMBER
ASSEMBLY #89283

6
7
8

5
3
2
5
9
4
2

3
2

14
2 1
15

10
21 11
18 12 13
10

17

20 19

16

16

24
23

22

8286
12-12-00
I I
TRENCHER ASSEMBLY
42" BOOM AND CRUMBER
ASSEMBLY #89283

NO REQ'D PART NO. DESCRIPTION

1 4 1101 .50" UNC x 4.50" Hex Capscrew
2 16 1646 .50" Hard Flat Washer
3 4 1841 .50" UNC Lock Nut
4 4 21061 Lever Arm
5 4 1514 .38" Flat Washer

6 1 89278 Crumber End

7 2 1226 .38" UNC Hex Nut
8 2 1503 .38" Lock Washer
9 2 1044 .38" UNC x 1.25" Hex Capscrew
10 2 54067* Idler Spacer

11 1 79103* Idler Wheel

12 1 8085* Idler Bearing
13 1 53988* Idler Bearing Hub
14 2 40161 Decal - Stand Clear
15 1 21045 42" Crumber Bar / Personal Restraint Bar

16 2 53138 Boom Bushing

17 1 82124 42" Boom
18 1 53188 Spring
19 1 53132 1.12" Square Pin
20 1 62717 Boom End

21 1 1548 .75" UNC x 1.25" Nylock Capscrew

22 2 62702 Adjusting Bolt
23 2 1245 .75" UNC Jam Nut
24 2 1231 .75" UNC Nut

NOTE: Idler Roller Assembly Repair Kit #80868 includes all parts marked
with an asterisk (*).
8287
12-12-00
I I
TRENCHER ASSEMBLY
48" BOOM AND CRUMBER
ASSEMBLY #89284

6
7
8

5
3
2
5
9
4
2

3
2

14
2 1
15

10
21 11
18 12 13
10

17

19
20
16

16

24
23

22

8288
12-12-00
I I
TRENCHER ASSEMBLY
48" BOOM AND CRUMBER
ASSEMBLY #89284

NO REQ'D PART NO. DESCRIPTION

1 4 1101 .50" UNC x 4.50" Hex Capscrew
2 16 1646 .50" Hard Flat Washer
3 4 1841 .50" UNC Lock Nut
4 4 21061 Lever Arm
5 4 1514 .38" Flat Washer

6 1 89278 Crumber End

7 2 1226 .38" UNC Hex Nut
8 2 1503 .38" Lock Washer
9 2 1044 .38" UNC x 1.25" Hex Capscrew
10 2 54067* Idler Spacer

11 1 79103* Idler Wheel

12 1 8085* Idler Bearing
13 1 53988* Idler Bearing Hub
14 2 40161 Decal - Stand Clear
15 1 21045 48" Crumber Bar / Personal Restraint Bar

16 2 53138 Boom Bushing

17 1 79088 48" Boom
18 1 53188 Spring
19 1 53132 1.12" Square Pin
20 1 62717 Boom End

21 1 1548 .75" UNC x 1.25" Nylock Capscrew

22 2 62702 Adjusting Bolt
23 2 1245 .75" UNC Jam Nut
24 2 1231 .75" UNC Nut

NOTE: Idler Roller Assembly Repair Kit #80868 includes all parts marked
with an asterisk (*).
8289
12-12-00
J J
DIGGING CHAIN OPTIONS

GENERAL INFORMATION

This section is devoted to digging chain options for your trencher. In

it you will find a listing of all the chain options available. You will also find
information on replacement parts, chain assembly, and chain conversion.
These options will increase the flexibility of your equipment, and make your
trenching job easier.

There is some basic information about the trencher and it's digging
components that you should know before you try to order any options. This
information is given here for your convenience. With it you will be able to
better understand the rest of this section.

CHAIN PITCH

The digging chains may be divided into groups by pitch. The pitch of
the chain is the distance between the centers of the holes in the chain links
(See Figure 1). The word pitch can also be used to describe the length of
the chain.
FIGURE #1 FIGURE #2

8 PITCH OF CHAIN

DISTANCE BETWEEN HOLE

CENTERS = PITCH

The 640 Trencher has a heavy weight chain with a tensil strength of
50,000 pounds and a pitch of 2.00".

There is one thing that you must understand about chain pitch. You
can not intermix components of different pitches. You cannot substitute
chain links of different pitches in a digging chain. Nor can you use a dig-
ging chain of one pitch, with a driver sprocket of a different pitch. Attempt-
ing to do so will cause the chain to "jump" off the sprocket continuously.

9587
4-20-04
J J
DIGGING CHAIN OPTIONS

COMPONENT SIZE

The size of the digging component is based on the depth of the

trench it will dig with auger at ground level and a 60° boom digging angle
(See Figure 3). For example, a 36" boom is not necessarily 36" long. The
36" length means it will dig a trench 36" deep with the augers in their float
position and at a 60° digging angle.
FIGURE #3

36" BOOM AUGER AT

GROUND LEVEL

60°
36"

BOOM DIGGING ANGLE

DIGGING STATIONS

Digging chains are made up of a series of individual links pinned

together. Every link has a special "Digging Station" link. These links are
designed so that the digging teeth can be attached to the basic chains (See
Figure 4). Digging chains may be purchased in any length, with or without
teeth. All chains, teeth, spacers and assorted digging hardware may be
purchased separately.
FIGURE #4
DIGGING TOOTH
MOUNTING HARDWARE

DIGING STATIONS

DIGGING CHAIN

This completes the basic information on digging chain options. The

rest of this section contains specific information on digging chains and parts
available, complete with part numbers. Again it may be noted that these
options are designed to increase the flexability of your equipment and to
make your trenching jobs easier. We offer them to better serve your trench-
ing needs. 9588
4-20-04
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN ASSEMBLIES

GENERAL INFORMATION

This page contains a listing of all of the 2.00" pitch digging chain
assemblies offered for your trencher. Each chain assembly comes with all
necessary teeth and spacers already installed. Just thread the chain onto the
trencher and fasten the two ends together with the pin and keeper pin included
in the assembly. A crumber shoe of the appropriate width is also included in
the chain assembly.

Before you order a new chain, be sure to check for compatibility with
corresponding components. You may need to order more than just a chain
assembly. You must use a digging boom of the same digging depth as the chain.
The crumber bar must also be of the same digging depth. The digging sprocket
must also be of the same pitch as the chain. All of these components must
match for the trencher to function properly.

Bare 2.00" pitch digging chain (without teeth, spacers, or hardware) can
be ordered in any desired length under the part number 79018. Just use this
number and then specifiy the length desired in pitches (example, 54 pitches of
chain would be needed for a 36" boom).

2.00" PITCH DIGGING CHAIN ASSEMBLIES

Complete chain assemblies. Includes chain with all teeth
and spacers attached. Also includes appropriate width crumber
shoe.
CHAIN ASSEMBLIES WITH A TOOTH EVERY STATION
DESCRIPTION LENGTH OF CHAIN TENSIL PART
(boom used X trench width) (in 2.00" pitches) STRENGTH NO.

For 30" Boom 6" Wide 48 Pitch 50,000# 79154

For 30" Boom 8" Wide 48 Pitch 50,000# 79155
For 30" Boom 10" Wide 48 Pitch 50,000# 79156
For 30" Boom 12" Wide 48 Pitch 50,000# 79157
For 36" Boom 6" Wide 54 Pitch 50,000# 79099
For 36" Boom 8" Wide 54 Pitch 50,000# 79100
For 36" Boom 10" Wide 54 Pitch 50,000# 79158
For 42" Boom 6" Wide 62 Pitch 50,000# 82114
For 42" Boom 8" Wide 62 Pitch 50,000# 82115
For 42" Boom 10" Wide 62 Pitch 50,000# 82116
For 48" Boom 6" Wide 68 Pitch 50,000# 79101
For 48" Boom 8" Wide 68 Pitch 50,000# 79102

8309
1-26-01
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN ASSEMBLIES

2.00" PITCH DIGGING CHAIN ASSEMBLIES

Complete chain assemblies. Includes chain with all teeth and spacers
attached. Also includes appropriate width crumber shoe.
CHAIN ASSEMBLIES WITH A TOOTH EVERY OTHER STATION
DESCRIPTION LENGTH OF CHAIN TENSIL PART
(boom used X trench width) (in 2.00" pitches) STRENGTH NO.
For 30" Boom 6" Wide 48 Pitch 50,000# 79181
For 30" Boom 8" Wide 48 Pitch 50,000# 79182
For 30" Boom 10" Wide 48 Pitch 50,000# 79183
For 30" Boom 12" Wide 48 Pitch 50,000# 79184
For 36" Boom 6" Wide 54 Pitch 50,000# 79185
For 36" Boom 8" Wide 54 Pitch 50,000# 79186
For 36" Boom 10" Wide 54 Pitch 50,000# 79187
For 42" Boom 6" Wide 62 Pitch 50,000# 82117
For 42" Boom 8" Wide 62 Pitch 50,000# 82118
For 42" Boom 10" Wide 62 Pitch 50,000# 82119
For 48" Boom 6" Wide 68 Pitch 50,000# 79188
For 48" Boom 8" Wide 68 Pitch 50,000# 79189

70/30 COMBINATION CHAIN ASSEMBLIES

DESCRIPTION LENGTH OF CHAIN TENSIL PART
(boom used X trench width) (in 2.00" pitches) STRENGTH NO.
For 30" Boom 6" Wide 48 Pitch 50,000# 31546
For 36" Boom 6" Wide 54 Pitch 50,000# 31547
For 42" Boom 6" Wide 62 Pitch 50,000# 31563
For 48" Boom 6" Wide 68 Pitch 50,000# 31548

COMBINATION CHAIN ASSEMBLIES WITH 50/50 R&F/CUP TEETH

DESCRIPTION LENGTH OF CHAIN TENSIL PART
(boom used X trench width) (in 2.00" pitches) STRENGTH NO.
For 30" Boom 6" Wide 48 Pitch 50,000# 83706
For 36" Boom 6" Wide 54 Pitch 50,000# 83707
For 42" Boom 6" Wide 62 Pitch 50,000# 83708
For 48" Boom 6" Wide 68 Pitch 50,000# 83709

SHARK STYLE TOOTH CHAIN ASSEMBLIES

DESCRIPTION LENGTH OF CHAIN TENSIL PART
(boom used X trench width) (in 2.00" pitches) STRENGTH NO.
For 30" Boom 6" Wide 48 Pitch 50,000# 31549
For 36" Boom 6" Wide 54 Pitch 50,000# 31550
For 42" Boom 6" Wide 62 Pitch 50,000# 31551
For 48" Boom 6" Wide 68 Pitch 50,000# 31552

8310
4-22-04-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH CHAIN REPLACEMENT PARTS

GENERAL INFORMATION
You can purchase individual chain links and pins for your trencher.
These can be used to repair a damaged chain, or lengthen and modify an
existing chain. Below is a diagram of the chain’s basic components with
their descriptions and corresponding part numbers. Use these numbers
when ordering. You can also order a complete bare chain (without teeth
and spacers) in any length desired. The chain is ordered under part number
79018 for 2.00" Pitch. Just specify the length you want in pitches. (See
“2.00” PITCH DIGGING CHAIN ASSEMBLIES” chart located in this section.)
When pinning links of chain together, first tap the pin through the
connector link with the perfectly round holes and then on through the inner
link. Place the second connector link in position, you will note that the end
of the pin has one side flattened. Rotate the pin until its flat side lines up
with the corresponding flat side of the connector link hole and tap the pin
on through. Place the chain keeper pin into the hole at the end of the main
pin and tap down tight. Finally, bend the end of the keeper pin over to
secure it in place.
4

1
3

NO. REQ’D PART NO. DESCRIPTION

1 Varies 54757 Inner Link

2 Varies 54731 Pin
3 Varies 54732 Chain Keeper Pin
4 Varies 54730 Connector Link includes (2) Pins #54731 and (2)
Chain Keeper Pins #54732
8311
1-26-01
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN TOOTH STATION SEQUENCE

GENERAL INFORMATION

Every second link on a digging chain is a special link called a digging sta-
tion. These digging station links are designed so that digging teeth can be bolted
RQWRWKHPLQDYDULHW\RIFRQ¿JXUDWLRQV,WLVWKHQXPEHUDQGWKHPDNHXSRI
WKHVHGLIIHUHQWGLJJLQJVWDWLRQVWKDWPDNHHDFKFKDLQXQLTXH

 7KHIROORZLQJSDJHVVKRZWKHYDULRXVFKDLQVDYDLODEOHIRUSLWFKWUHQ-
FKHUV7KHGLJJLQJWRRWKPDNHXSRIHDFKGLJJLQJVWDWLRQLVJLYHQLQFRGH7KH
NH\WRWKHFRGHLVOLVWHGEHORZ7KXVWKHFKDLQDVVHPEO\GLDJUDPVZLOOVKRZ\RX
WKHRUGHURIWKHGLJJLQJVWDWLRQVRQHDFKGLJJLQJFKDLQ7KHDFWXDOSDUWVEUHDN
down of each digging tooth station is also shown on the following pages.

C-D .............................CENTER SHARK STYLE TOOTH

CL-C ...........................CENTER LEFT CUP TOOTH
CL-D ...........................CENTER LEFT SHARK STYLE TOOTH
CR-C ..........................CENTER RIGHT CUP TOOTH
CR-D ..........................CENTER RIGHT SHARK STYLE TOOTH
6L-C............................6" LEFT CUP TOOTH
6L-D............................6" LEFT SHARK STYLE TOOTH
6R-C ...........................6" RIGHT CUP TOOTH
6R-D ...........................6" RIGHT SHARK STYLE TOOTH
8L-C............................8" LEFT CUP TOOTH
8L-D............................8" LEFT SHARK STYLE TOOTH
8R-C ...........................8" RIGHT CUP TOOTH
8R-D ...........................8" RIGHT SHARK STYLE TOOTH
10-C............................10" CUP TOOTH
10-D............................10" SHARK STYLE TOOTH
12-C............................12" CUP TOOTH
12-D............................12" SHARK STYLE TOOTH

10798 10-9-06
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING STATIONS

CUP TOOTH DIGGING STATIONS

CL-C CR-C
CR-C 6L-C 6L-C 6R-C
6R-C

3 4 3 4

2
1 1 1 1

2
2

CENTER LEFT - CUP CENTER RIGHT - CUP 6" LEFT - CUP 6" RIGHT - CUP

8L-C 8R-C
3 4
1.00"
6 1 6 5
5

7 7
8" LEFT - CUP 8" RIGHT - CUP

10-C
4
3
8

10" - CUP 1

9 9

12-C
3 4
10

12" - CUP
1

7
7

9593 10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING STATIONS

CUP TOOTH DIGGING STATIONS

NO PART NO. DESCRIPTION

1 1692 .50" UNF Nut

2 1340 .50" UNF X 1.50" Hex Capscrew
3 54431 Left Cup Tooth
4 54432 Right Cup Tooth
5 54439 Tooth Spacer

6 54440 Spacer 1.81"

7 1351 .50" UNF X 4.50" Hex Capscrew
8 54441 10" Tooth Spacer
9 1347 .50" UNF X 3.25" Hex Capscrew
10 54442 12" Tooth Spacer

9594 10-9-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING STATIONS
SHARK STYLE TOOTH DIGGING STATIONS

C-D CL-D CR-D 6L-D 6R-D

10 13 14
10 10

11 12 12
1 2 1 2 3 3
1 1

2 2 1 2

CENTER CENTER LEFT CENTER RIGHT 6" LEFT 6" RIGHT

SHARK STYLE SHARK STYLE SHARK STYLE SHARK STYLE SHARK STYLE

8L-D 8R-D 8-D

13 1.00" 13 14
1.00"

3
3 14 1
1 1

4 1
4 6
5 5 5
8" LEFT 8" RIGHT
8" SHARK STYLE
SHARK STYLE SHARK STYLE

10-D
13 14

6.50"
1
10" - SHARK STYLE

7 8 7

12-D

8.50" 14
13

1
12" - SHARK STYLE

4 9 4
9595
4-26-04
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING STATIONS
SHARK STYLE TOOTH DIGGING STATIONS

NO PART NO. DESCRIPTION

1 1692 .50" UNF Hex Nut

2 22321 .50" UNF X 3.00" Hex Capscrew - Grade 8
3 54440 Spacer
4 22324 .50" UNF X 4.50" Hex Capscrew - Grade 8
5 54439 Tooth Spacer

6 1814 .50" UNF X 6.00" Hex Capscrew - Grade 8

7 22322 .50" UNF X 3.50" Hex Capscrew - Grade 8
8 54441 10" Tooth Spacer
9 54442 12" Tooth Spacer
10 31599 Center Shark Style Tooth

11 15053 Spacer
12 15054 Spacer
13 31600 Left Shark Style Tooth
14 31601 Right Shark Style Tooth

9596
11-30-04-2
 COMBINATION ROCK AND FROST CHAIN
2.00" PITCH - TOOTH EVERY STATION
SERVICE PARTS

STATION #1 STATION #2 STATION #3

11 11 3
1 2
12 12 13

10 15 15 10
10 15

STATION #4 STATION #5 STATION #6

11 11
4 2 1
13 14 14
10

15
10 16 16 10

STATION #7 STATION #8 STATION #9

3 4 11
6 5
13
13 14

10 10 10 17
15 15

STATION #10 STATION #11 STATION #12

4 3 11 4 3
8 7 14
14 14

10 19
10 18 10
17
9 9

6824
1-26-96
 COMBINATION ROCK AND FROST CHAIN
2.00" PITCH - TOOTH EVERY STATION
SERVICE PARTS

NO PART NO. DESCRIPTION

1 83802 Carbide Bit Holder - 4" Right

2 83801 Carbide Bit Holder - 4" Left

3 54432 Cup Cutter - Right

4 54431 Cup Cutter - Left

5 83804 Carbide Bit Holder - 5" Right

(1) Weld Spot on Top for Identifying Purposes
6 83803 Carbide Bit Holder - 5" Left
(1) Weld Spot on Top for Identifying Purposes

7 83806 Carbide Bit Holder - 6" Right

(2) Weld Spots on Top for Identifying Purposes
8 83805 Carbide Bit Holder - 6" Left
(2) Weld Spots on Top for Identifying Purposes

9 83800 Spacer - 6" Cut

10 1692 .50" UNF Hex Nut

11 51547 Carbide Bit

12 83798 Tube Spacer
(Inside Mount Carbide Bit Holder)

13 54628 Tube Spacer

(Inside Mount Cup Cutter)
14 54440 Tube Spacer
(Outside Cup or Carbide Bit Holder)

15 1347 .50" UNF X 3.25" Hex Capscrew

16 1349 .50" UNF X 3.75" Hex Capscrew

17 1351 .50" UNF X 4.50" Hex Capscrew

18 1348 .50" UNF X 3.50" Hex Capscrew

19 1350 .50" UNF X 4.00" Hex Capscrew

NOTE: There are weld spots located on the top of the 5" and 6" Carbide
Bit Holders to assist in parts identification. One weld spot on the 5" Hold-
ers and two weld spots on the 6" Holders.

6825
1-26-96
J J
DIGGING CHAIN OPTIONS
30" BOOM AND CUP TEETH EVERY STATION
#79154 #79155 #79156 #79157

CR-C CR-C CR-C CR-C

6R-C 6R-C 6R-C 6R-C

6L-C 6L-C 6L-C 6L-C

6R-C 8R-C 8R-C 8R-C

6L-C 8L-C 8L-C 8L-C

6R-C 6R-C 10-C 10-C

6L-C 6L-C 6R-C 12-C

6R-C 8R-C 6L-C 6R-C

6L-C 8L-C 8R-C 6L-C

CL-C CL-C 8L-C 8R-C

6R-C 6R-C 10-C 8L-C

6L-C 6L-C CL-C 10-C

6R-C 8R-C 6R-C 12-C

6L-C 8L-C 6L-C CL-C

6R-C 6R-C 8R-C 6R-C

6L-C 6L-C 8L-C 6L-C

6R-C 8R-C 10-C 8R-C

6L-C 8L-C 6R-C 8L-C

CR-C CR-C 6L-C 10-C

6R-C 6R-C 8R-C 12-C

6L-C 6L-C 8L-C 6R-C

6R-C 8R-C 10-C 6L-C

6L-C 8L-C CR-C 8R-C

8L-C

10787 10-5-06
J J
DIGGING CHAIN OPTIONS
36" BOOM AND CUP TEETH EVERY STATION
#79099 #79100 #79158 #81120

CR-C CR-C CR-C CR-C

6R-C 6R-C 6R-C 6R-C

6L-C 6L-C 6L-C 6L-C

6R-C 8R-C 8R-C 8R-C

6L-C 8L-C 8L-C 8L-C

6R-C 6R-C 10-C 10-C

6L-C 6L-C 6R-C 12-C

6R-C 8R-C 6L-C 6R-C

6L-C 8L-C 8R-C 6L-C

CL-C CL-C 8L-C 8R-C

6R-C 6R-C 10-C 8L-C

6L-C 6L-C CL-C 10-C

6R-C 8R-C 6R-C 12-C

6L-C 8L-C 6L-C CL-C

6R-C 6R-C 8R-C 6R-C

6L-C 6L-C 8L-C 6L-C

6R-C 8R-C 10-C 8R-C

6L-C 8L-C 6R-C 8L-C

CR-C CR-C 6L-C 10-C

6R-C 6R-C 8R-C 12-C

6L-C 6L-C 8L-C 6R-C

6R-C 8R-C 10-C 6L-C

6L-C 8L-C CR-C 8R-C

6R-C 6R-C 6R-C 8L-C

6L-C 6L-C 6L-C 10-C

6R-C 8R-C 8R-C 12-C

6L-C 8L-C 8L-C CR-C

10788 10-5-06
J J
DIGGING CHAIN OPTIONS
42" BOOM AND CUP TEETH EVERY STATION
#82114 #82115 #82116

CR-C CR-C CR-C

6R-C 6R-C 6R-C

6L-C 6L-C 6L-C

6R-C 8R-C 8R-C

6L-C 8L-C 8L-C

6R-C 6R-C 10-C

6L-C 6L-C 6R-C

6R-C 8R-C 6L-C

6L-C 8L-C 8R-C

CL-C CL-C 8L-C

6R-C 6R-C 10-C

6L-C 6L-C CL-C

6R-C 8R-C 6R-C

6L-C 8L-C 6L-C

6R-C 6R-C 8R-C

6L-C 6L-C 8L-C

6R-C 8R-C 10-C

6L-C 8L-C 6R-C

CR-C CR-C 6L-C

6R-C 6R-C 8R-C

6L-C 6L-C 8L-C

6R-C 8R-C 10-C

6L-C 8L-C CR-C

6R-C 6R-C 6R-C

6L-C 6L-C 6L-C

6R-C 8R-C 8R-C

6L-C 8L-C 8L-C

CL-C CL-C 10-C

6R-C 6R-C 6R-C

6L-C 6L-C 6L-C

6R-C 8R-C 8R-C
10789 10-5-06
J J
DIGGING CHAIN OPTIONS
48" BOOM AND CUP TEETH EVERY STATION
#79101 #79102
CR-C CR-C

6R-C 6R-C

6L-C 6L-C
6R-C 8R-C
6L-C 8L-C
6R-C 6R-C
6L-C 6L-C

6R-C 8R-C
6L-C 8L-C
CL-C CL-C
6R-C 6R-C
6L-C 6L-C
6R-C 8R-C
6L-C 8L-C
6R-C 6R-C
6L-C 6L-C
6R-C 8R-C
6L-C 8L-C

CR-C CR-C
6R-C 6R-C
6L-C 8L-C
6R-C 8R-C
6L-C 8L-C
6R-C 6R-C
6L-C 6L-C
6R-C 8R-C
6L-C 8L-C
CL-C CL-C
6R-C 6R-C
6L-C 6L-C
6R-C 8R-C
6L-C 8L-C
6R-C 6R-C
6L-C 6L-C

10790 10-5-06
J J
DIGGING CHAIN OPTIONS
60" BOOM AND CUP TEETH EVERY STATION
#80053

CR-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
CL-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
CR-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
CL-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
6R-C
6L-C
CR-C
6R-C
6L-C
6R-C

10791 10-5-06
J J
DIGGING CHAIN OPTIONS
30" BOOM AND CUP TEETH EVERY OTHER STATION
#79181 #79182 #79183 #79184

CR-C CR-C CR-C CR-C

6R-C 6R-C 6R-C 6R-C

6L-C 6L-C 6L-C 6L-C

6R-C 8R-C 8R-C 8R-C

6L-C 8L-C 8L-C 8L-C

CL-C CL-C 10-C 10-C

6R-C CL-C
6R-C 12-C

6L-C 6L-C 6R-C 6R-C

6R-C 8R-C 6L-C 8R-C

6L-C 8L-C 8R-C 8L-C

CR-C CR-C 8L-C 10-C

6R-C 6R-C 10-C 12-C

10792 10-5-06
J J
DIGGING CHAIN OPTIONS
36" BOOM AND CUP TEETH EVERY OTHER STATION

#79185 #79186 #79187

CR-C
CR-C CR-C

6R-C 6R-C 6R-C

6L-C 6L-C 6L-C

6R-C 8R-C 8R-C

6L-C 8L-C 8L-C

CL-C CL-C 10-C

6R-C 6R-C CL-C

6L-C 6L-C 6R-C

6R-C 8R-C 6L-C

6L-C 8L-C 8R-C

CR-C CR-C 8L-C

6R-C 6R-C 10-C

6L-C 6L-C CR-C

6R-C 8R-C 6R-C

10793 10-5-06
J J
DIGGING CHAIN OPTIONS
42" BOOM AND CUP TEETH EVERY OTHER STATION

#82117 #82118 #82119

CR-C CR-C CR-C

6R-C 6R-C 6R-C

6L-C 6L-C 6L-C

6R-C 8R-C 8R-C

6L-C 8L-C 8L-C

CL-C CL-C 10-C

6R-C 6R-C CL-C

6L-C 6L-C 6R-C

6R-C 8R-C 6L-C

6L-C 8L-C 8R-C

CR-C CR-C 8L-C

6R-C 6R-C
10-C

6L-C 6L-C CR-C

6R-C 8R-C 6R-C

6L-C 8L-C 6L-C

CL-C CL-C 8R-C

10794 10-5-06
J J
DIGGING CHAIN OPTIONS
48" BOOM AND CUP TEETH EVERY OTHER STATION
#79188 #79189

CR-C CR-C

6R-C 6R-C

6L-C 6L-C

6R-C 8R-C

6L-C 8L-C

CL-C CL-C

6R-C 6R-C

6L-C 6L-C

6R-C 8R-C

6L-C 8L-C

CR-C CR-C

6R-C 6R-C

6L-C 6L-C

6R-C 8R-C

6L-C 8L-C

CL-C CL-C

6R-C 6R-C

10795 10-5-06
J J
DIGGING CHAIN OPTIONS
60" BOOM AND CUP TEETH EVERY OTHER STATION
#80043
CR-C

6R-C

6L-C

6R-C

6L-C

CL-C

6R-C

6L-C

6R-C

6L-C

CR-C

6R-C

6L-C

6R-C

6L-C

CL-C

6R-C

6L-C

6R-C

6L-C

10796 10-5-06
J J
DIGGING CHAIN OPTIONS
70/30 COMBINATION CHAINS
(AGGRESSIVE SHARK-STYLE TEETH - CUP TEETH)
#31546 #31547 #31563 #31548

C-D C-D C-D C-D

CR-C CR-C CR-C CR-C
CL-D CL-D CL-D CL-D
CR-D CR-D CR-D CR-D
CL-D CL-D CL-D CL-D
CR-D CR-D CR-D CR-D

6L-D 6L-D 6L-D 6L-D

6L-C 6L-C 6L-C 6L-C
6R-D 6R-D 6R-D 6R-D

6R-C 6R-C 6R-C 6R-C

C-D C-D C-D C-D

CR-C CR-C CR-C CR-C

CL-D CL-D CL-D CL-D

CR-D CR-D CR-D CR-D

CL-D CL-D CL-D CL-D

CR-D CR-D CR-D CR-D

6L-D 6L-D 6L-D 6L-D

6L-C 6L-C 6L-C 6L-C
6R-D 6R-D 6R-D 6R-D
6R-C 6R-C 6R-C 6R-C

C-D C-D C-D C-D

CR-C CL-D CR-C CR-C

CL-D CR-D CL-D CL-D

CR-D 6L-D CR-D CR-D
6L-C CL-D CL-D
6R-D CR-D CR-D
6R-C 6L-D 6L-D
6L-C 6L-C
6R-D 6R-D
6R-C 6R-C
C-D C-D
CR-C
CL-D

CR-D
10797 10-5-06
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

GENERAL INFORMATION
 'LJJLQJFKDLQVFDQEHPRGL¿HGWRGLJWUHQFKHVLQDYDULHW\RIZLGWKV%\PRGLI\LQJDQ
H[LVWLQJFKDLQLWFDQEHXVHGWRGLJWKHZLGWK\RXZDQWDQGWKXVVDYHJRLQJWKHH[SHQVHRI
DZKROHQHZGLJJLQJFKDLQDVVHPEO\7KLVFDQEHDFRQVLGHUDEOHFRVWVDYLQJVKRZHYHULWLV
PRUHZRUNWKDQMXVWLQVWDOOLQJDQHZGLJJLQJFKDLQDVVHPEO\
 7KHLQIRUPDWLRQJLYHQEHORZLVDFRPSOHWHOLVWLQJRIDOOWKHSRVVLEOHFKDLQZLGWKFRQYHU-
VLRQVIRUSLWFKFKDLQIRU\RXUWUHQFKHU,QFOXGHGLQWKHOLVWLQJLVDEUHDNGRZQRIDOOWKH
SDUWV LQFOXGLQJSDUWQXPEHUVDQGTXDQWLWLHV QHHGHGWRPDNHWKHFRQYHUVLRQ6LPSO\LQVWDOO
WKHQHZSDUWV DQGUHDUUDQJHWKHROGSDUWV VRWKDWWKH¿QLVKHGFKDLQFRQVWUXFWLRQIROORZV
WKDWGHVFULEHGLQWKH³'LJJLQJ7RRWK6WDWLRQ6HTXHQFH´FKDUWDQGWKH³'LJJLQJ7RRWK6WDWLRQ
%UHDN'RZQ´GLDJUDPVIRUSLWFKFKDLQ ORFDWHGHOVHZKHUHLQWKLVVHFWLRQ 
 ,WVKRXOGEHQRWHGWKDWWKLVLQIRUPDWLRQRQO\DSSOLHVWRPRGLI\LQJFKDLQVRIWKHVDPH
OHQJWKDQGSLWFK$OOFRPSRQHQWVPXVWEHRIWKHVDPHSLWFK<RXFDQQRWLQWHUPL[FRPSRQHQWV
RIGLIIHUHQWSLWFK

CHAIN CONVERSIONS FOR 30" BOOMS - TOOTH EVERY STATION

1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
  81);&DSVFUHZ
    6SDFHU7XEH
    6SDFHU
    &UXPEHU6KRH
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
  81);&DSVFUHZ
    &UXPEHU6KRH
3) FROM 6" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
  81)+LJK+H[1XW
    81);&DSVFUHZ
    81);&DSVFUHZ
    /HIW7RRWK
    5LJKW7RRWK
    6SDFHU7XEH
    &KDLQ6SDFHU
    &UXPEHU6KRH
    6SDFHU
6673
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

4) FROM 10" WIDE TO 6" WIDE

REQ’D PART NO. DESCRIPTION
24 1340 .50"UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
5) FROM 6" WIDE TO 12" WIDE
REQ’D PART NO. DESCRIPTION
12 1692 .50" UNF High Hex Nut
28 1351 .50"UNF X 4.50" Capscrew
12 1347 .50"UNF X 3.25" Capscrew
3 54431 Left Tooth
3 54432 Right Tooth
3 54441 10" Chain Spacer
3 54442 12" Chain Spacer
1 53059 12" Crumber Shoe
8 54439 8" Spacer
16 54440 Spacer Tube
6) FROM 12" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
16 1340 .50"UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
7) FROM 8" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
8 1692 .50" UNF High Hex Nut
16 1347 .50"UNF X 3.25" Capscrew
2 54431 Left Tooth
2 54432 Right Tooth
4 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
8) FROM 10" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
4 1351 .50"UNF X 4.50" Capscrew
4 1340 .50" UNF X 1.50" Capscrew
2 54439 8" Spacer
1 53055 8" Crumber Shoe

6674
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

9) FROM 8" WIDE TO 12" WIDE

REQ’D PART NO. DESCRIPTION
12 1692 .50" UNF High Hex Nut
12 1347 .50"UNF X 3.25" Capscrew
8 1351 .50"UNF X 4.50" Capscrew
3 54431 Left Tooth
3 54432 Right Tooth
3 54441 10" Chain Spacer
3 54442 12" Chain Spacer
1 53059 12" Crumber Shoe
10) FROM 12" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
8 1340 .50" UNF X 1.50" Capscrew
4 54440 Spacer Tube
2 54439 8" Spacer
1 53055 8" Crumber Shoe
11) FROM 10" WIDE TO 12" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
12 1351 .50"UNF X 4.50" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
3 54442 12" Chain Spacer
1 53059 12" Crumber Shoe
12) FROM 12" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
8 1347 .50"UNF X 3.25" Capscrew
4 1340 .50" UNF X 1.50" Capscrew
1 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
CHAIN CONVERSIONS FOR 36" BOOMS - TOOTH EVERY STATION
1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
24 1351 .50"UNF X 4.50" Capscrew
24 54440 Spacer Tube
12 54439 8" Spacer
1 53055 8" Crumber Shoe

6675
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

2) FROM 8" WIDE TO 6" WIDE

REQ’D PART NO. DESCRIPTION
24 1340 .50"UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
3) FROM 6" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
8 1692 .50" UNF High Hex Nut
16 1347 .50" UNF X 3.25" Capscrew
20 1351 .50"UNF X 4.50" Capscrew
2 54431 Left Tooth
2 54432 Right Tooth
4 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
10 54439 8" Spacer
20 54440 Spacer Tube
4) FROM 10" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
28 1340 .50"UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
5) FROM 8" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
8 1692 .50" UNF High Hex Nut
16 1347 .50"UNF X 3.25" Capscrew
2 54431 Left Tooth
2 54432 Right Tooth
4 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
6) FROM 10" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
4 1351 .50"UNF X 4.50" Capscrew
4 1340 .50" UNF X 1.50" Capscrew
4 54440 Spacer Tube
2 54439 8" Spacer
1 53055 8" Crumber Shoe

6676
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

CHAIN CONVERSIONS FOR 42" BOOMS - TOOTH EVERY STATION

1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
26 1351 .50"UNF X 4.50" Capscrew
26 54440 Spacer Tube
13 54439 8" Spacer
1 53055 8" Crumber Shoe
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
26 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
3) FROM 6" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
10 1692 .50" UNF High Hex Nut
20 1347 .50" UNC X 3.25" Capscrew
22 1351 .50"UNF X 4.50" Capscrew
2 54431 Left Tooth
3 54432 Right Tooth
5 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
11 54439 8" Spacer
22 54440 Stacer Tube
4) FROM 10" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
32 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
5) FROM 8" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
10 1692 .50" UNF High Hex Nut
20 1347 .50"UNF X 3.25" Capscrew
2 54431 Left Tooth
3 54432 Right Tooth
5 54441 10" Chain Spacer
1 53058 10" Crumber Shoe

6677
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

6) FROM 10" WIDE TO 8" WIDE

REQ’D PART NO. DESCRIPTION
4 1351 .50"UNF X 4.50" Capscrew
6 1340 .50" UNF X 1.50" Capscrew
4 54440 Spacer Tube
2 54439 8" Spacer
1 53055 8" Crumber Shoe
CHAIN CONVERSIONS FOR 48" BOOMS - TOOTH EVERY STATION
1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
28 1351 .50"UNF X 4.50" Capscrew
28 54440 Spacer Tube
14 54439 8" Spacer
1 53055 8" Crumber Shoe
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
28 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
CHAIN CONVERSIONS FOR 30" BOOMS - TOOTH EVERY OTHER STATION
1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
8 1351 .50"UNF X 4.50" Capscrew
4 54439 8" Spacer
1 53055 8" Crumber Shoe
8 54440 Spacer Tube
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
8 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
3) FROM 6" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1347 .50" UNF X 3.25" Capscrew
8 1351 .50"UNF X 4.50" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
2 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
4 54439 8" Spacer
8 54440 Spacer Tube 6678
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

4) FROM 10" WIDE TO 6" WIDE

REQ’D PART NO. DESCRIPTION
12 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
5) FROM 6" WIDE TO 12" WIDE
REQ’D PART NO. DESCRIPTION
8 1692 .50" UNF High Hex Nut
16 1351 .50"UNF X 4.50" Capscrew
8 1347 .50" UNF X 3.25" Capscrew
2 54431 Left Tooth
2 54432 Right Tooth
2 54441 10" Chain Spacer
2 54442 12" Chain Spacer
1 53059 12" Crumber Shoe
4 54439 8" Spacer
8 54440 Spacer Tube
6) FROM 12" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
16 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
7) FROM 8" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1347 .50"UNF X 3.25" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
2 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
8) FROM 10" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
4 1340 .50" UNF X 1.50" Capscrew
1 53055 8" Crumber Shoe

6679
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS

9) FROM 8" WIDE TO 12" WIDE

REQ’D PART NO. DESCRIPTION
8 1692 .50" UNF High Hex Nut
8 1347 .50" UNF X 3.25" Capscrew
8 1351 .50"UNF X 4.50" Capscrew
2 54431 Left Tooth
2 54432 Right Tooth
2 54441 10" Chain Spacer
2 54442 12" Chain Spacer
1 53059 12" Crumber Shoe
10) FROM 12" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
8 1340 .50" UNF X 1.50" Capscrew
1 53055 8" Crumber Shoe
11) FROM 10" WIDE TO 12" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1351 .50"UNF X 4.50" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
2 54442 12" Chain Spacer
1 53059 12" Crumber Shoe
12) FROM 12" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1340 .50" UNF X 1.50" Capscrew
1 53058 10" Crumber Shoe
CHAIN CONVERSIONS FOR 36" BOOMS - TOOTH EVERY OTHER STATION
1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
10 1351 .50"UNF X 4.50" Capscrew
5 54439 8" Spacer
10 54440 Spacer Tube
1 53055 8" Crumber Shoe
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
10 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
6680
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS
3) FROM 6" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1347 .50" UNF X 3.25" Capscrew
8 1351 .50"UNF X 4.50" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
2 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
4 54439 8" Spacer
8 54440 Spacer Tube
4) FROM 10" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
4 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
5) FROM 8" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1347 .50"UNF X 3.25" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
2 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
6) FROM 10" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
2 1340 .50" UNF X 1.50" Capscrew
2 1351 .50"UNF X 4.50" Capscrew
2 54440 Spacer Tube
1 54439 8" Spacer
1 53055 8" Crumber Shoe
CHAIN CONVERSIONS FOR 42" BOOMS - TOOTH EVERY OTHER STATION
1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
12 1351 .50"UNF X 4.50" Capscrew
6 54439 8" Spacer
12 54440 Spacer Tube
1 53055 8" Crumber Shoe
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
12 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe 6681
10-6-06-2
J J
DIGGING CHAIN OPTIONS
2.00" PITCH DIGGING CHAIN WIDTH CONVERSIONS
3) FROM 6" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1347 .50" UNF X 3.25" Capscrew
10 1351 .50"UNF X 4.50" Capscrew
1 54431 Left Tooth
2 54432 Right Tooth
2 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
5 54439 8" Spacer
10 54440 Spacer Tube
4) FROM 10" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
24 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
5) FROM 8" WIDE TO 10" WIDE
REQ’D PART NO. DESCRIPTION
4 1692 .50" UNF High Hex Nut
8 1347 .50" UNF X 3.25" Capscrew
1 54431 Left Tooth
1 54432 Right Tooth
2 54441 10" Chain Spacer
1 53058 10" Crumber Shoe
6) FROM 10" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
2 1340 .50" UNF X 1.50" Capscrew
14 1351 .50" UNF X 4.50" Capcrew
1 54439 8" Spacer
2 54440 Spacer Tube
1 53055 8" Crumber Shoe
CHAIN CONVERSIONS FOR 48" BOOMS - TOOTH EVERY OTHER STATION
1) FROM 6" WIDE TO 8" WIDE
REQ’D PART NO. DESCRIPTION
12 1351 .50"UNF X 4.50" Capscrew
12 54440 Spacer Tube
6 54439 8" Spacer
1 53055 8" Crumber Shoe
2) FROM 8" WIDE TO 6" WIDE
REQ’D PART NO. DESCRIPTION
14 1340 .50" UNF X 1.50" Capscrew
1 53054 6" Crumber Shoe
6682
10-6-06-2
L L
MAINTENANCE
GENERAL MAINTENANCE

GENERAL INFORMATION
Your trencher was designed to be virtually maintenance free. Very
little effort is needed to keep it in top condition. It is however important to
follow these procedures to get full performance and longevity out of the
trencher.
LUBRICATION
The only lubrication your trencher needs is the greasing of the
headshaft end bearing. The bearing should be lubricated with an SAE multi-
purpose grease every 8 hours of operation. A grease zerk is installed in the
bearing to facilitate this task.
NOTE: Not all trenchers require lubricating of the headshaft bearing. Some
units have a sealed bearing that requires no maintenance. These units can
be identified by the absence of a grease zerk in the bearing.
IMPORTANT: DO NOT lubricate any other part of the trencher! Lubricating
parts such as the digging chain or the idler wheel will only attract dirt, re-
sulting in increased wear.
EVERY 40 HOURS OF OPERATION
Every 40 hours of operation the trencher should be inspected for
loose nuts, capscrews, bearings etc. Tighten as required, replace where
necessary. Clean equipment of all dirt, oil, grease, etc. This will assist you
in making visual inspections and help avoid overlooking worn or damaged
components. Keep all safety decals clean and legible. Replace if damaged
or worn.
DIGGING TOOTH REPLACEMENT
Sharp teeth are important to good performance. When teeth wear
out, production will drop sharply, increasing wear and tear on other compo-
nents.
Cup teeth wear on the tip and side bulge in varying amounts. Wear
patterns change with different digging conditions. The following patterns
and captions are approximate and should be used as a guide to help you
determine your own best cost/benefit tooth replacement time. Normal
replacement should be made between 30% and 60% reduction in perfor-
mance. Replacement is a bolt-on procedure. See Section J.

New 20% Reduced 50% Reduced 70% Reduced Beyond

Performance Performance Performance Use
4445
3-3-92-2
M M
STORAGE
640 TRENCHER

GENERAL INFORMATION

The following storage procedures will help you to keep your trencher
in top condition. They will also help you get off to a good start the next
time your trencher is needed. We therefore strongly recommend that you
take the extra time to follow these procedures whenever your trencher will
not be used for an extended period of time.

PREPARATION FOR STORAGE

1. Clean the trencher exterior thoroughly, removing all mud, dirt, and
grease.

2. Tighten all loose bolts, nuts, and set screws.

3. Touch up unpainted and exposed areas with paint to prevent rust.

4. Coat the digging chain with a thin covering of oil. Operate chain for a
short period to work the oil into the pins.

5. Store the trencher in a dry and protected place. Leaving the trencher
outside, exposed to the elements will materially shorten its life.

6. Inspect trencher for visible signs of wear, breakage or damage. Order

any parts required and make necessary repairs to avoid delays when
starting next season.

7. Replace operating decals if damaged or in unreadable condition.

REMOVING FROM STORAGE

1. Remove all protective coverings

2. Check hydraulic hoses for deterioration and if necessary, replace.

3. During cold weather, operate the trencher slowly for a short time
before placing the unit under full load.

9597
4-28-04
N N
TROUBLE SHOOTING
640 TRENCHER

GENERAL INFORMATION

Your trencher was designed to be as simple and as trouble free as

possible. The purpose of this section is to help you in the event that a
problem does develop. Why we cannot possibly cover every problem that
might occur, you will find that those that are most common are covered
here.

PROBLEM: Digging chain will not turn

POSSIBLE CAUSE AND REMEDY:

1. Quick coupler not completely engaged. Check to see that all couplers
are matched pairs and engaged correctly. Check coupler hook-up
information (See Section E) for proper hydraulic hose routing.

2. Quick coupler failure. Check couplers for dirt, rust, or other contami-
nates that could effect coupler engagement. Clean or replace cou-
plers as needed.

3. Obstruction in hydraulic hose. Remove hydraulic hoses and couplers

one at a time and check flow through hose by blowing through the
hose or by pouring hydraulic fluid through the hose. Clean or replace
hose as needed.

4. Loader auxiliary hydraulics not operating properly. See loader

operator's manual or dealer for information and help.

5. Hydraulic motor failed. Be sure you have hydraulic flow to the motor.
If oil flow to motor is good, but motor will still not turn when de-
tached from trencher headshaft, remove motor and have it serviced or
replaced as needed.

6. Boom end bearing failed. Inspect boom end bearing for free move-
ment. Check for binding or foreign matter jamming bearing. Clean or
replace as necessary.

7. Digging chain to tight. Digging chain should only be tight enough to

remain on sprockets while turning under load. Their should be some
sag in the chain. If too tight, loosen chain by the adjusting nut(s) on
the boom.

9590
4-22-04
N N
TROUBLE SHOOTING
640 TRENCHER

8. Sand build-up in tooth root of sprocket. Sand can build up in the

sprockets effectively increasing the chain tension. Raise the boom
out of the ditch and reverse the digging chain on the trencher, then
run the trencher out of the trench to clear the sprockets. Reinstall
the chain in its correct digging direction and readjust chain tension.

9. Drive sprocket loose on headshaft. Observe if the headshaft is turn-

ing. If shaft is turning but sprocket is not, stop the trencher and
tighten the sprocket.

PROBLEM: Trencher does not dig fast enough

POSSIBLE CAUSE AND REMEDY:

1. Digging teeth worn. See maintenance Section L in this manual. In-

spect teeth and replace as needed.

2. Loader relief valve set too low. See loader operator's manual and or
dealer for proper relief valve service and adjustment.

3. Quick coupler or hose restriction. Inspect couplers and hoses for dirt,
rust, and other contaminates and repair or replace as needed.

4. Hydraulic system over heating. Shut the trencher and loader down
and allow oil to cool. Repeated stalling of the trencher will cause the
oil to over heat. Avoid excessive stalling.

5. Cutting a ditch size beyond the ability of the loader. Your trencher is
powered by oil from the loader's auxiliary hydraulic system. The
horsepower transmitted through the auxiliary hydraulics is substan-
tially less than that of the engine.

6. Incorrect hydraulic motor application. Check the recommended GPM

for the hydraulic motor your trencher is equipped with and compare
to the skid-steer auxiliary hydraulic flow.

PROBLEM: Hydraulic oil over heating

POSSIBLE CAUSE AND REMEDY:

1. Loader relief valve set too low. See loader operator's manual and/or
dealer for proper relief valve service and adjustment.

9591
4-22-04
N N
TROUBLE SHOOTING
640 TRENCHER

2. Quick coupler or hose restriction. Inspect couplers and hoses for dirt,
rust, and other contaminates and repair or replace as needed.

3. Motor or hose size not balanced to loader. A hose or a motor that is

too small can cause added internal friction and resultant heat build-
up. Check mounting kit parts list and diagram (See Section E) for
proper hose size and type.

4. Loader not equipped with oil cooler or sufficient sump capacity.

Check with your loader dealer for information and availability of auxil-
iary cooling and sump kits. Install if available. If not available stop
loader and trencher and allow them to cool when they get too hot.

PROBLEM: Excessive chain speed

POSSIBLE CAUSE AND REMEDY:

1. Incorrect hydraulic motor application. Check the recommended GPM

for the hydraulic motor your trencher is equipped with and compare
to the skid-steer auxiliary hydraulic flow.

9592
4-22-04
O O
BOLT TORQUE
BOLT TORQUE SPECIFICATIONS
GENERAL TORQUE SPECIFICATION TABLE
Use the following torques when special torques are not given. These values apply to fasteners as
received from suppliers, dry, or when lubricated with normal engine oil. They do not apply if special
graphited or moly disulphide greases or other extreme pressure lubricants are used. This applies to both
UNF and UNC threads. Remember to always use grade five or better when replacing bolts.

SAE Grade No. 2 5 8*

Bolt head identification
marks as per grade.
NOTE: Manufacturing
Marks Will Vary
TORQUE TORQUE TORQUE

Bolt Size Pounds Feet Newton-Meters Pounds Feet Newton-Meters Pounds Feet Newton-Meters
Inches Millimeters Min. Max. Min. Max. Min. Max. Min. Max. Min. Max. Min. Max.
1/4 6.35 5 6 6.8 8.13 9 11 12.2 14.9 12 15 16.3 30.3
5/16 7.94 10 12 13.6 16.3 17 20.5 23.1 27.8 24 29 32.5 39.3
3/8 9.53 20 23 27.1 31.2 35 42 47.5 57.0 45 54 61.0 73.2
7/16 11.11 30 25 40.7 47.4 54 64 73.2 86.8 70 84 94.9 113.9
1/2 12.70 45 52 61.0 70.5 80 96 108.5 130.2 110 132 149.2 179.0
9/16 14.29 65 75 88.1 101.6 110 132 149.2 179.0 160 192 217.0 260.4
5/8 15.88 95 105 128.7 142.3 150 180 203.4 244.1 220 264 298.3 358.0
3/4 19.05 150 185 203.3 250.7 270 324 366.1 439.3 380 456 515.3 618.3
7/8 22.23 160 200 216.8 271.0 400 480 542.4 650.9 600 720 813.6 976.3
1 25.40 250 300 338.8 406.5 580 696 786.5 943.8 900 1080 1220.4 1464.5
1-1/8 25.58 - - - - 800 880 1084.8 1193.3 1280 1440 1735.7 1952.6
1-1/4 31.75 - - - - 1120 1240 1518.7 1681.4 1820 2000 2467.9 2712.0
1-3/8 34.93 - - - - 1460 1680 1979.8 2278.1 2380 2720 3227.3 3688.3
1-1/2 38.10 - - - - 1940 2200 2630.6 2983.2 3160 3560 4285.0 4827.4
* Thick Nuts must be used with Grade 8 bolts

METRIC BOLT TORQUE SPECIFICATIONS

Coarse Thread Fine Thread

Size of Screw Grade No. Ptich (mm) Pounds Feet Newton-Meters Pitch (mm) Pounds Feet Newton-Meters
5.6 3.6-5.8 4.9-7.9 - -
M6 8.8 1.0 5.8-9.4 7.9-12.7 - - -
10.9 7.2-10 9.8-13.6 - -
5.6 7.2-14 9.8-19 12-17 16.3-23
M8 8.8 1.25 17-22 23-29.8 1.0 19-27 25.7-36.6
10.9 20-26 27.1-35.2 22-31 29.8-42
5.6 20-25 27.1-33.9 20-29 27.1-39.3
M10 8.8 1.5 34-40 46.1-54.2 1.25 35-47 47.4-63.7
10.9 38-46 51.5-62.3 40-52 54.2-70.5
5.6 28-34 37.9-46.1 31-41 42-55.6
M12 8.8 1.75 51-59 69.1-79.9 1.25 56-68 75.9-92.1
10.9 57-66 77.2-89.4 62-75 84-101.6
5.6 49-56 66.4-75.9 52-64 70.5-86.7
M14 8.8 2.0 81-93 109.8-126 1.5 90-106 122-143.6
10.9 96-109 130.1-147.7 107-124 145-168
5.6 67-77 90.8-104.3 69-83 93.5-112.5
M16 8.8 2.0 116-130 157.2-176.2 1.5 120-138 162.6-187
10.9 129-145 174.8-196.5 140-158 189.7-214.1
5.6 88-100 119.2-136 100-117 136-158.5
M18 8.8 2.0 150-168 203.3-227.6 1.5 177-199 239.8-269.6
10.9 175-194 237.1-262.9 202-231 273.7-313
5.6 108-130 146.3-176.2 132-150 178.9-203.3
M20 8.8 2.5 186-205 252-277.8 1.5 206-242 279.1-327.9
10.9 213-249 288.6-337.4 246-289 333.3-391.6

3915
6-8-95-2
P P
SPECIFICATIONS
640 TRENCHER

G
F

H
D
C

B
S

BOOM SIZE
DESCRIPTION 30" 36" 42" 48"
A. Trench Depth w/Auger
@ 65° Digging Angle 30" 36" 42" 48"
B. Trencher Widths Available 6" 6" 6" 6"
8" 8" 8" 8"
10" 10" 10" -
12" 12" - -
C. Recommended Trenching Angle 65° 65° 65° 65°
D. Headshaft Height 8" 8" 8" 8"
E. Overall Trencher Length 66" 73" 79" 86"
F. Overall Trencher Width 53" 53" 53" 53"
G. Overall Trencher Height 32" 32" 32" 32"
H. Spoil Discharge Reach 18" 18" 18" 18"
S. Side Shift, Right of Center 17" 17" 17" 17"
Distance From Centerline Drive
Sprocket to Back of Mounting Frame 16" 16" 16" 16"
Hydrostatic System:
640(A) GPM Requirements ............................................ Min. 14 / Max. 17
640(B) GPM Requirements ............................................ Min. 18 / Max. 24
640(C) GPM Requirements............................................ Min. 25 / Max. 28
640(D) GPM Requirements............................................ Min. 29 / Max. 35
640(E) GPM Requirements ............................................ Min. 36 / Max. 44
Operating Pressure ..........................................................2000 - 3000 PSI
Approximate Overall Shipping Weight................................................... 1120 lbs
  ZLWK [SLWFKDQWLEDFNÀH[FKDLQ

9589
10-4-06-2
Q Q
DECALS
DECAL PLACEMENT
640TRENCHER

GENERAL INFORMATION

The diagram on this page shows the location of all the decals used on
the 640 trencher. The decals are identified by their part numbers, with
reductions of the actual decals located on the following pages. Use this
information to order replacements for lost or damaged decals. Be sure to
read all decals before operating the trencher. They contain information you
need to know for both safety and trencher longevity.

4338 40440

40113

SERIAL NUMBER TAG LOCATION 40117

40151 40115
40116
40727

40161

40727

4105

4498

IMPORTANT: Keep all safety signs clean and legible. Replace all missing, illegible, or damaged
safety signs. When replacing parts with safety signs attached, the safety signs must also be
replaced.

REPLACING SAFETY SIGNS: Clean the area of application with nonflammable solvent, then
wash the same area with soap and water. Allow the surface to fully dry. Remove the backing
from the safety sign, exposing the adhesive surface. Apply the safety sign to the position shown
in the diagram above and smooth out any bubbles.
9558
4-14-04
Q Q
DECALS

MADE IN USA

MADE IN USE
PART #4338

WARNING! HIGH PRESSURE FLUID

PART #40151
CALL BEFORE YOU DIG

640
PART #40440

640 MODEL NUMBER

PART #40727

WARNING! GENERAL DANGER

PART #40115 PART #4498

9559
4-14-04
Q Q
DECALS

DANGER STAND CLEAR

DANGER STAND CLEAR
PART #4105

STAND CLEAR
PART #40161

BRADCO LOGO
PART #40113

NON-SLIP SURFACE DECAL

PART #40116

NON-SLIP SURFACE DECAL

PART #40117

9560
4-14-04
R R
PREDELIVERY CHECKLIST
640 TRENCHER

GENERAL INFORMATION

The following is a list of areas that should be inspected by the dealer

prior to delivery of the trencher to the customer. The customer should
check the list and make sure that the dealer has completed the inspection.
Completion of this checklist will help insure that the customer receives the
trencher in complete working order, ready to install.

PREDELIVERY CHECKLIST - CHECK AND ADJUST AS NECESSARY

1. Visually inspect the trencher for bent, loose, cracked, damaged

or missing parts. Check for any other irregularities.

2. Check all hydraulic connections for leaks an all hoses for proper
positioning to reduce chafing and binding.

3. Check the trencher's digging chain adjustment. See "Operating

Instructions - Chain Tension Adjustment" Section G.

4. Check trencher bolts for tightness. Retighten after the first

eight working hours, and after every forty working hour interval
thereafter. See "Bolt Torque" Section O.

5. Make sure decals are not damaged or missing and are in their
correct location. See "Decals" Section Q.

6. Check that the hydraulic flow (GPM) of the trencher motor is

compatible with the recommended GPM of the skid-steer. See
"Preoperation" Section D.

7. Complete and return the manufacturers "Warranty Validation

Form" and sign your dealership predelivery checklist.

8. Operator to read the AEM Trencher Safety Manual provided,

before operating trencher.

9598
4-28-04
S S
LIMITED WARRANTY
EFFECTIVE ON PRODUCTS MANUFACTURED AFTER JANUARY 1, 2001

All new BRADCO products are warranted to be free from defects in

materials or workmanship which may cause failure under normal usage and
service when used for the purpose intended.

In the event of failure within twenty four (24) months from initial
retail sale, lease or rental date (excluding cable, ground engaging parts such
as sprockets, digging chain, bearings, teeth, tamping and demolition heads,
blade cutting edges, pilot bits, auger teeth, auger heads & broom bristles), if
after examination, BRADCO determines failure was due to defective material
and/or workmanship, parts will be repaired or replaced. BRADCO may
request defective part or parts be returned prepaid to them for inspection at
their place of business at Delhi, Iowa, or to a location specified by
BRADCO.

Any claims under this warranty must be made within fifteen (15)
days after the Buyer learns of the facts upon which such claim is based. All
claims not made in writing and received by BRADCO within the time period
specified above shall be deemed waived.

THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EX-

PRESSED OR IMPLIED AND THERE ARE NO WARRANTIES OF MERCHANT-
ABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT
SHALL BRADCO BE LIABLE FOR CONSEQUENTIAL OR SPECIAL DAMAGE.

BRADCO'S LIABILITY FOR ANY AND ALL LOSSES AND DAMAGES

TO BUYER, RESULTING FROM ANY CAUSE WHATSOEVER, INCLUDING
BRADCO'S NEGLIGENCE, IRRESPECTIVE OF WHETHER SUCH DEFECTS
ARE DISCOVERABLE OR LATENT, SHALL IN NO EVENT EXCEED THE PUR-
CHASE PRICE OF THE PARTICULAR PRODUCTS WITH RESPECT TO
WHICH LOSSES OR DAMAGES ARE CLAIMED, OR, AT THE ELECTION OF
BRADCO, THE REPAIR OR REPLACEMENT OF DEFECTIVE OR DAMAGED
PRODUCTS.

3924
1-29-01-6