L950 english

50 SERIES
FRONT END LOADER
MODEL L-950
L950-OH
LONGVIEW, TEXAS
OPERATOR’S
HANDBOOK
2007© All Rights Reserved

INTRODUCTION
SECTION 1 - MACHINE SPECIFICATONS
SECTION 2 - SAFETY INSTRUCTIONS
SECTION 3 - DESCRIPTION OF CONTROLS
AND OPERATING
INSTRUCTIONS
SECTION 4 - LINCS™ NAVIGATION
PROCEDURES
SECTION 5 – PREVENTIVE MACHINE
MAINTENANCE SCHEDULES
DAILY OR PRE-SHIFT
WALK-AROUND INSPECTION
LETOURNEAU TECHNOLOGIES™
50-SERIES LOADER/DOZER-950
OPERATOR'S HANDBOOK
GENERAL TABLE OF CONTENTS
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OPERATOR HANDBOOK-L-950
HANDBOOK GENERAL TABLE OF CONTENTS
NOTE: If you have printed a page from the LEPDS-LeTourneau Electronic Publication Delivery System-The page may not include all relevant data, such as specifications, Warnings,
Cautions or Notes that may be found in other documentation. Verify you have read and understood all associated information before performing any work on the machine. It is the
responsibility of the mechanic, repairman or inspector to understand all instructions for the specific work being performed.
Fri Jul 06 10:29:42 2007 OPERATOR HANDBOOK-L-950 000ABB001 ( d 1 )
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NOTES
NOTE: If you have printed a page from the LEPS-LeTourneau Electronic Publication System-The page may not include all relevant data,
such as specifications, Warnings, Cautions or Notes that may be found elsewhere in the complete document or in other applicable service
information documents. Make sure you have read and understood all associated information before performing any maintenance on the
machine. It is the responsibility of the mechanic, repairman or inspector to understand the current instructions of the manufacturer and the
manuals, for the specific operation concerned.
LeTourneau Technologies © 2007 All Rights Reserved

SCOPE OF THIS PUBLICATION
The DIGITALLY CONTROLLED LOADER/DOZER OPERATOR’S HANDBOOK provides a
condensed version of machine specifications and basic safety and operating instructions as
printed in the machine’s SERVICE MANUAL.
It is essential to be thoroughly familiarized with the information contained herein before
operating the machine.
We especially draw the reader’s attention to the following advisories concerning this
handbook:
This operator’s handbook contains machine specifications and basic safety and
operating instructions only. Information on performing inspections and
maintenance operations are found in the SERVICE MANUAL. There are serious
safety concerns involved in performing maintenance work to this machine. It is
ESSENTIAL to read and understand the information contained in the SERVICE
MANUAL before proceeding with inspections or maintenance operations.
50-SERIES LOADER/DOZER-950
OPERATOR'S HANDBOOK
INTRODUCTION
1. The instructions in this operator’s handbook do not cover all of the optional equipment
that may be ordered on the machine. It is essential to review the SERVICE MANUAL for
information on any optional equipment items not covered in this operator’s handbook.
2. Read the engine manufacturer owner’s manuals (provided with the LeTourneau
manuals) before operating the machine or performing maintenance work to the engine.
Any problems with the engine should be referred to an engine manufacturer’s closest
authorized distributor.
3. This operator’s handbook does not contain manufacturer’s product literature from outside
suppliers whose equipment may be found on the machine. Where available, this
information is contained in the SERVICE MANUAL.
4. Some informational references in this Handbook are located in the SERVICE MANUAL.
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HANDBOOK INTRODUCTION
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SAFETY AND OPERATIONAL ADVISORY
The instructions provided in this operator’s handbook are for operating the machine under
normal conditions. As each workplace and operating situation is different, LeTourneau cannot
anticipate unusual or extreme circumstances that might require additional safety precautions or
modifications in machine operation in addition to those covered in this operator’s handbook.
Therefore, it is essential to become familiar with extreme or unusual situations that are unique
to the workplace that might warrant a modification of the instructions contained herein. Contact
an authorized LeTourneau Technologies distributor or the LeTourneau Product Support Group
in Longview, Texas, for assistance should any operating or maintenance practice needed to
accommodate the working environment require a departure from the instructions contained in
this operator’s handbook or the machine’s SERVICE manual.
LETOURNEAU FRONT-END LOADER OR DOZER (L/D) OPERATING ENVIRONMENT
LeTourneau rubber-tired front-end machines are designed as rugged all-weather tools for
various industries. They are designed as off-highway equipment for use in various applications
that are in remote locations. Due to their very large size, they must work in an area with few
other machines, and the only proximity to buildings would be for routine maintenance or repair.
They are not to be operated near office buildings or residential areas.
The operators of this machine are advised not to approach local residences
or business establishments within a distance of 328 yards (300 meters) in
order to prevent interference with their television and radio reception.
LOADERS: The primary function of the loader is to load or move loose material (i.e. blasted
rock, crushed stone, sand, coal, overburden etc.) into hauling units such as mining trucks and
rail trains. A typical application would be loading end-dump mining trucks from a bank of
blasted rock.
A loader should never be used as a dozer. The dozer is specifically
designed to push materials, whereas the loader is designed to lift and
move loose material.
DOZERS: The primary function of the dozer is to move loose material (i.e. blasted rock,
crushed stone, sand, coal, overburden, wood chips etc.). A typical application would be moving
overburden.
The machines can withstand and are fully functional in temperatures ranging from -40° F to
+122° F (-40° C to +50° C), 0-100% humidity, and in all forms of precipitation, day or night.
Operating at elevation is only limited by the restrictions placed on the diesel engine power unit,
and theoretically could exceed 14,260 ft. (4500 meters). They can readily work in standing
water of a depth to the bottom of the machine’s axles.
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HANDBOOK INTRODUCTION
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DIGITALLY CONTROLLED MACHINE SPECIFICATIONS
LeTourneau Technologies has made every effort to make these specifications as accurate as
possible at the time of printing. However, we reserve the right to make changes and
improvements at any time, without notice, in equipment, materials and specifications. To
ensure the most current information, please contact your distributor representative. Data
herein is applicable to model L/D-950 unless specified individually.
These same specifications are in PDF format--(L-950)--(D-950). They require
the ability of your computer to read PDF 5.0 or greater file format.
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MACHINE SPECIFICATIONS
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L950-COVER SHEET 1
LeTourneau Technologies 2007 All Rights Reserved 001A017 ( p1 )

SHEET 2

SHEET 3

SHEET 4

L/D-950 COMPONENT APPROXIMATE WEIGHTS
NOTE: These weights are only approximate as a guide for determining proper lifting
procedures and equipment. These weights do not include liquids or external hardware in or on
the components.
ITEM/EQUIPMENT LOADER DOZER
LBS. KGS. LBS. KGS.
ENGINE, CUMMINS 7,337 3,500 7,337 3,500
ENGINE, DETROIT DIESEL 9,799 4,445 9,799 4,445
POWER UNIT (ENGINE/GENERATOR) CUMMINS 11,800 5,352 11,800 5,352
POWER UNIT (ENGINE/GENERATOR) DETROIT DIESEL 14,100 6,396 14,100 6,396
BUCKET/BLADE (STANDARD) 25,000 11,340 18,000 8,165
BUCKET (QUICK CHANGE) 25,000 11,340
N/A
BUCKET ADAPTER (QUICK CHANGE) 6,600 2,994
LIFT ARM ASSEMBLY 32,000 14,515
BELLCRANK 3,278 1,487
LEVEL LINK 625 284
MAINFRAME CONNECTED (FULLY ASSEMBLED) 125,000 56,699 147,000 66,678
FRONT FRAMES 42,000 19,051 64,000 29,030
REAR FRAMES 83,000 37,648 83,000 37,648
HOIST CYLINDER (EACH) 2,158 979 537 244
BUCKET CYLINDER (EACH) 3,200 1452 N/A
TILT CYLINDER (EACH)
N/A
303 138
PITCH CYLINDER (EACH) 296 135
STEERING CYLINDER (EACH) 600 273 600 273
TIRE AND RIM (EACH) 8,600 3901 8,600 3,901
DRIVER 2,976 1350 2,976 1,350
MOTOR WITH BRAKE 4,000 1815 4,000 1,815
MOTOR, DRIVER, BRAKE 6,976 3165 6,976 3,165
GENERATOR 3,500 1,588 3,300 1,497
HYDRAULIC TANK* 2,000 907 2,000 907
HOOD STRUCTURE 1,701 772 1700.5 772
REAR COWL 2317 1,051 2,316.1 1,051
RADIATOR, OIL COOLER ASSEMBLY 2,800 1,271 2.800 1,271
REAR AXLE 7,070 3,207 7,070 3,207
HYDRAULIC PUMP GEARBOX (PUMPS NOT INCLUDED) 1408 639 1,408 639
HOIST AND BUCKET/BLADE PUMPS 287 131 287 131
HUSCO VALVE 300 136 300 136
BLOWER/AIR CLEANER ASSEMBLY 2,200 998 2,200 998
MUFFLER 400 181 400 181
ELECTRICAL CONVERTER CABINET 3,488 1,583 3,488 1,583
ROLL BAR 5,650 2,563 5,650 2,563
CAB 2,000 907 2,000 907
GRID STRUCTURE W/GRIDS 800 363 800 363
BATTERIES 150 68 150 68
*Empty
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L/D-950 COMPONENT APPROXIMATE WEIGHTS
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SECTION 002
SAFETY INSTRUCTION

SAFETY INSTRUCTIONS
DIGITALLY CONTROLLED MACHINES
(READ BEFORE OPERATING OR SERVICING MACHINE)
OSL-2
TABLE OF CONTENTS
SAFETY STANDARDS
MACHINE SAFETY AND INSTRUCTIONAL SIGNS
SIGNAL WORDS
MAINTENANCE
GENERAL OPERATIONAL SAFETY GUIDELINES
BE PREPARED BEFORE STARTING
MOUNTING AND DISMOUNTING THE MACHINE
START-UP SAFETY
SAFETY IN MATERIAL HANDLING OPERATIONS
END THE OPERATING PERIOD SAFETY
SAFETY IN SERVICE AND REPAIR OPERATIONS
PRE-SERVICE OR REPAIR PREPARATIONS AND CAUTIONS
GENERAL SERVICE OR REPAIR PRECAUTIONS
OPERATOR’S CAB EMERGENCY EXIT
ROLL OVER PROTECTIVE STRUCTURE (ROPS) AND FALLING OBJECT
PROTECTIVE STRUCTURE (FOPS)
SERVICE REQUIREMENTS
EMERGENCY SHUTDOWN SWITCHES
OPERATION
REARVIEW MIRRORS
SIDE REARVIEW MIRRORS
ADJUSTMENTS FOR VIEWING
MAINTENANCE
SEAT BELTS
SEAT BELT OPERATION AND ADJUSTMENT
FASTENING AND UNFASTENING THE BELT
ADJUSTMENTS
INSPECTION
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SERVICE MANUAL
SAFETY INSTRUCTIONS
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FIRE PREVENTION AND CONTROL
FIRE PREVENTION
MANUAL FIRE EXTINGUISHER
FIRE SUPPRESSION SYSTEM - AFEX™ OR ANSUL™ SYSTEMS (Optional)
FIRE DETECTION SYSTEM CIRCUIT MONITOR PANEL - ANSUL™ SYSTEM
(Optional)
CIRCUIT MONITOR PANEL – AFEX™ SYSTEM
MANUAL ACTUATION – AFEX™ AND ANSUL™ SYSTEMS
FIRE DETECTION ENGINE SHUTDOWN OPTION
SYSTEM MAINTENANCE AND TROUBLESHOOTING
ANSUL™ VEHICLE FIRE PROTECTION BOOKLET
ANSUL™ INSTALLATION, RECHARGE, INSPECTION AND MAINTENANCE MANUAL
AFEX™ PRODUCT INFORMATION
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SERVICE MANUAL
SAFETY INSTRUCTIONS
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LIST OF ILLUSTRATIONS
Figure 1. IDENTIFICATION AND SAFETY GROUP
Figure 2. SHOCK HAZARDS
Figure 3. CRUSH HAZARD AREAS
Figure 4. MAINTENANCE LOCKOUT SWITCH (Optional) AND GROUND LEVEL
EMERGENCY SHUTDOWN SWITCH (Optional)
Figure 5. FILTER PURGE TIMER SWITCH BOX
Figure 6. RADIATOR SURGE TANK AIR RELEASE BALL VALVE
Figure 7. CAB EMERGENCY EXIT
Figure 8. TYPICAL TORQUE NUT AS USED ON ROPS
Figure 9. ROLL OVER PROTECTIVE STRUCTURE (ROPS) AND FALLING OBJECT
PROTECTIVE STRUCTURE (FOPS) ASSEMBLY
Figure 10. CAB WALL-MOUNTED EMERGENCY SHUTDOWN SWITCH
Figure 11. GROUND LEVEL EMERGENCY SHUTDOWN SWITCH (Optional)
Figure 12. HYDRAULIC TANK AIR RELEASE VALVE
Figure 13. EMERGENCY SHUTDOWN SWITCHES – TYPICAL LOCATIONS
Figure 14. RECOMMENDED SIDE REARVIEW MIRROR ADJUSTMENT AND
APPROXIMATE FIELD OF VISION
Figure 14.1. TYPICAL "BLIND" AREAS ON LETOURNEAU EQUIPMENT
Figure 15. SIDE REARVIEW MIRROR INSTALLATION
Figure 16. SEAT BELT COMPONENTS AND FASTENING/UNFASTENING
PROCEDURES
Figure 17. HAND-HELD PORTABLE FIRE EXTINGUISHER
Figure 18. FIRE SUPPRESSION SYSTEM BOTTLES (AFEX™ SYSTEM SHOWN)
Figure 19. ANSUL™ FIRE DETECTION CIRCUIT MONITOR PANEL (Optional)
Figure 20. FIRE SUPPRESSION SYSTEM ACTUATOR SWITCHES AFEX™ AND
ANSUL™ SYSTEMS
Figure 21. AFEX™ CIRCUIT MONITOR PANEL
Figure 22. LOCATIONS OF FIRE SUPPRESSION SYSTEM ACTUATION SWITCHES
(TYPICAL LOCATIONS – STANDARD INSTALLATION)
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SERVICE MANUAL
SAFETY INSTRUCTIONS
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This publication contains general and specific safety precautions. The operator and
maintenance personnel should read these safety precautions carefully and understand them
before operating or performing maintenance operations to the machine
LeTourneau Technologies cannot anticipate every possible circumstance
that might involve a potential hazard. The warnings in this publication and
on the product are therefore not all inclusive. These rules will not apply to
all situations. If a tool, procedure, work method or operating technique not
specifically recommended by LeTourneau Technologies is used, the owner
must be satisfied that it is safe for all personnel. Also, ensure that the
product will not be damaged or made unsafe by the operation, lubrication,
maintenance or repair procedures chosen. Operating the machine on
different job sites and under various environments can create safety
hazards unique to that particular situation. If a dangerous situation
develops under these circumstances, only the alertness of the operator
and his proficiency in operating the machine are available to cope with the
emergency.
SAFETY STANDARDS
LeTourneau Technologies endeavors to comply with the purposes and the applicable
occupational safety and health standards as set forth by the Mine Safety and Health
Administration (MSHA), Society of Automotive Engineers (SAE), Institute of Electrical and
Electronics Engineers (IEEE), and International Standards Organization (ISO).
The customer should acknowledge that compliance with the above applicable organizations
under the law is the responsibility of each employer, and the employer should take all actions
necessary to maintain and operate LeTourneau Technologies equipment or accessories
according to applicable standards. Carefully review the procedures given in this manual with all
operators ANNUALLY. It is essential that all operators be familiar with, AND FOLLOW, safety
precautions. Operating instructions must be given to everyone using the machine before
operation and at least once a year thereafter.
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SERVICE MANUAL
SCOPE OF THIS PUBLICATION & SAFETY STANDARDS
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Safety and instructional signs are attached to the machine near specific hazard areas.
SIGNAL WORDS
The safety and instructional signs contain information for two levels of hazards and use the
signal words listed below:
Important safety information — a hazard that COULD cause serious injury
or loss of life.
Important information that tells how to prevent damage to equipment or
how to avoid a situation that COULD cause minor injury.
MAINTENANCE
These guidelines should be followed in the maintenance of the safety and instructional signs
affixed to the machine:
a. These signs should be inspected daily and any that are damaged, deteriorated or
missing should be replaced as soon as possible. Make sure that all safety and
instruction signs can be read. Clean or replace these signs if the words or pictures
cannot be read or seen.
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SERVICE MANUAL
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The safety and instructional signs on the machine should be legible for
four to five years under normal conditions. The signs use 3M #300 acrylic
adhesive. To replace the safety signs, follow these instructions:
If a safety or instructional sign is on a part that is replaced, make sure a
new sign is installed on the replaced part.
Replacement labels for the powered rear access ladder are only available
from the ladder manufacturer (available from the manufacturer's website).
• Clean and dry the surface to be sure it is free of dust, oils, fingerprints or
oxidation. Use heptane or isopropyl alcohol to clean the surface.
• Temperature of the mounting surface should be 50°F (10ºC)or above.
• Apply the label firmly and evenly on the surface and rub it down vigorously
and apply mild heat of 100° to 130°F (38° to 54°C) to achieve good bonding.
b. When cleaning the signs, use a cloth, water and soap. Do not use solvent, gasoline or
high-pressure washer, etc.
c. Refer to illustrations "IDENTIFICATION AND SAFETY LABEL GROUP" for information
on the location and type of signs found on the machine.
d. Refer to PARTS CATALOG for information on ordering replacement signs.
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SERVICE MANUAL
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REFER TO ILLUSTRATION ON PAGE 002A005 &7 (p)
ITEMS 1, 2, 3, 4, 5, 6 REFER TO SHEET 3 OF 7
Figure 1. IDENTIFICATION AND SAFETY GROUP (SHEET 1 OF 7)
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SERVICE MANUAL
FIGURE 1 SHEET 1 OF 7
NOTE: If you have printed a page from the LEPDS-LeTourneau Electronic Publication Delivery System-The page may not include all relevant data, such as specifications, Warnings, Cautions or Notes that may be found in other documentation. Verify you
have read and understood all associated information before performing any work on the machine. It is the responsibility of the mechanic, repairman or inspector to understand all instructions for the specific work being performed.
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TA13509-6a
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1 6
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8
119
12292 3 4 5
13
14
30
19
16
15
15
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21
22
4
18
4
15
7
20
12
18

REFER TO ILLUSTRATION ON PAGE 002A005 & 7 (p)
FIGURE 1. IDENTIFICATION AND SAFETY GROUP (SHEET 2 OF 7)
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SERVICE MANUAL
NOTE: If you have printed a page from the LEPDS-LeTourneau Electronic Publication Delivery System-The page may not include all relevant data, such as specifications, Warnings, Cautions or Notes that may be found in other documentation. Verify you
have read and understood all associated information before performing any work on the machine. It is the responsibility of the mechanic, repairman or inspector to understand all instructions for the specific work being performed.
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TA13509-6b
30
28
26
27
1510
20
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15
29 23
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TA13509-6c
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SERVICE MANUAL
Mon Apr 30 10:55:36 2007 MASTER L-950 002A009( d 1 )
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1 LABEL, BRAKE SPECIFICATION - L-950
2 LABEL, SAFETY - LEAVING CAB
3 LABEL, SAFETY - HAZARDOUS FUMES - DIESEL, CAL. PROP.
4 LABEL, SAFETY - CRUSH HAZARD
5 LABEL, SAFETY - PARK BRAKE
6 LABEL, SAFETY - BRAKING NOTE
REFER TO ILLUSTRATION ON PAGE 002A009 (p)
FIGURE 1. ID GROUP (SHEET 3 OF 7)

TA13509-6d
TAD
7
9
10
11
12
13

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SERVICE MANUAL
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7 LABEL, SAFETY - BEFORE STARTING ENGINE
9 LABEL, SAFETY - EMERGENCY EXIT
10 LABEL, SAFETY - STEAM HAZARD
11 LABEL, SAFETY - ROTATING FAN
12 LABEL, SAFETY - FALLING HAZARD
13 LABEL, SAFETY - LOWER STEP SLOWLY

TA13509-6e
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SERVICE MANUAL
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14 LABEL, DIESEL FUEL
15 LABEL, CAUTION - CHECK OIL LEVELS
16 LABEL, SAFETY - WARNING SHOCK HAZARD
17 LABEL, SAFETY - STANDING ON LADDER
18 LABEL, SAFETY - HIGH VOLTAGE, INTERNATIONAL SYMBOL
19 LABEL, SAFETY - RAISING CAB

TA13509-6f
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21
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taf

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SERVICE MANUAL
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20 LABEL, SAFETY - HIGH PRESSURE HOSE
21 LABEL, SAFETY - BLEED PUMPS
22 LABEL, SAFETY - NO ROOM
23 LABEL, SAFETY - EYE DAMAGE/FALL
24 LABEL, HYDRAULIC OIL
25 LABEL, CAUTION - WELDING PRECAUTION

TA13509-6g
LeTourneau Technologies 2007 All Rights Reserved OPERATOR HANDBOOK-L-950 002A013 ( p1 )
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TAG

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26 PLATE, TIRE DATA
27 PLATE, MODEL/SERIAL NUMBER
28 PLATE, ROLL BAR APPROVAL
29 PLACARD, LETOURNEAU NAME
30 PLACARD, L-950
31 PLACARD, LETOURNEAU LOGO

BE PREPARED BEFORE STARTING
These guidelines should be followed before attempting to operate the machine.
LeTourneau Technologies equipment is designed as off-highway
equipment for use in open pit applications that are in remote locations. Due
to their very large size they must work in an area with few other machines,
and their only proximity to buildings would be for routine maintenance or
repair. They are not to be operated near office buildings or residential
areas.
a. KNOW THE EQUIPMENT: Read all publications of this manual thoroughly. BE SURE to
understand all control functions, capacities, clearances, limitations and routine
maintenance required for safe operation. Support personnel should also be familiar with
this information.
Learn the location and function of ALL controls, indicators, warning devices and caution
instructions. Improper operation or improper maintenance of this machine can result in
hazardous conditions.
b. This machine must be operated in accordance with the information and instructions
contained in DESCRIPTION OF CONTROLS AND OPERATING INSTRUCTIONS
beginning on page 003A001 (d).
c. Be familiar with the machine’s safety devices (if so equipped) such as:
1. Seat belts
2. Rollover protective structure (ROPS) and falling object protective structure (FOPS)
3. Articulated steering frame lock
4. Shields and guards
5. Visual and audible warning devices
6. Fire extinguisher or fire suppression system (optional)
7. Maintenance lockout switch
8. Battery disconnect switch
9. Emergency stop buttons
10. Rearview mirrors
11. Cab emergency exit
d. Know the work area; clear away trash and debris. Remove anything that could puncture
a tire.
e. Check overhead clearances. Know the size of doorways and canopies. Know how much
clearance there is under power and telephone lines.
f. Complete the daily walk-around inspection and services. Perform the inspections and
maintenance per the MODULE PREVENTIVE MAINTENANCE SCHEDULES beginning
on page 004AJA001 (d). Check it thoroughly for visual defects, such as leaks, frayed
hoses, worn insulation and loose parts.
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SERVICE MANUAL
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MOUNTING AND DISMOUNTING THE MACHINE
These guidelines should be followed when mounting and dismounting the machine:
There are no provisions on any LeTourneau Technologies built machine to
accommodate the transportation of any persons other than the operator
alone. Ladders and catwalks attached to the machine are designed for
servicing of the machine while the machine is stopped only. They are NOT
designed for transporting riders at any time. Serious injury or death could
result while riding on any location of the machine other than the Operator’s
Cab.
a. Always use “three point support” with the machine, and face the machine while you enter
or leave it. “Three point support” means that three out of four arms and legs are in
contact with the machine at all times during mount and dismount.
b. Clean shoes and wipe hands before attempting to climb on the machine.
c. Use handholds, ladders or steps (as provided) when mounting and dismounting.
d. NEVER attempt to mount or dismount a moving machine.
e. NEVER jump off the machine.
f. NEVER try to climb on or off the machine when carrying tools or supplies. Use a hand
line to pull equipment up onto the platform.
g. Observe proper shutdown procedures before dismounting.
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SERVICE MANUAL
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START UP SAFELY
These guidelines should be followed in the normal operation of the machine:
Do not allow anyone to stand on any area of the machine, particularly near
steps in the area between the tires when the engine is running. There is no
clearance for persons in this area when the machine is turned.
Attach the frame lock before performing service work or lifting the machine
or transporting on another vehicle. Before operating, be sure frame lock is
removed and secured.
a. Do not wear loose clothing or jewelry that can catch on controls or other parts of the
machine.
b. Make certain all protective guards and covers are secured in place on the machine.
c. Keep the machine, especially walkways, platforms and steps free of foreign material,
such as debris, oil, tools and other items that are not part of the machine.
d. Secure all loose items such as lunch boxes, tools and other items that are not part of
the machine.
e. Start up safely. Blow the horn before starting up.
1. Allow at least 30 seconds for anyone working on or around the machine to exit the
area. The operator should also inspect the machine before the shift and after work
breaks to be sure no one is around it before starting.
2. Visually determine the area is clear before moving the machine.
f. Follow the engine manufacturer’s recommended starting procedure. After engine
has been started, check all gauges and instruments to be sure that everything is
operating properly.
g. Diesel exhaust fumes can cause sickness. If necessary to start an engine in an
enclosed area, be sure adequate ventilation is provided.
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SERVICE MANUAL
GENERAL OPERATIONAL SAFETY GUIDELINES...CONT'D...START UP SAFELY
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NEVER use the bucket/blade or lift arms to lift
personnel. Serious injury or loss of life is
possible.
h. Operate bucket/blade and hoist controls through a complete cycle — check for
faulty operation. Report any sluggishness, binding, or over travel to your foreman.
i. To be sure direction of travel and speed can be controlled, move the direction
control switch to forward and reverse positions, and press the accelerator pedal slowly.
j. Test brakes before operating. Test parking and dynamic brakes to make sure the
machine will be able to stop and stay stopped.
k. Recheck lights, backup alarm or other warning and safety devices.
l. Sit properly, in an alert position. Check out controls in a safe area while moving
slowly. STEER MACHINE BOTH RIGHT AND LEFT to be sure steering is operating
properly.
m. Never carry an unauthorized rider. The operator’s cab is designed for one person
only.
n. Know where the emergency first aid kit is located and how to use it. Inspect it
frequently to be sure all items are present and in good condition.
o. Watch out for overhead dangers. Keep a safe distance from overhead power lines.
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SERVICE MANUAL
GENERAL OPERATIONAL SAFETY GUIDELINES...CONT'D...START UP SAFELY
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SAFETY IN MATERIAL HANDLING OPERATIONS
Remember these rules when working with the machine in mining operations:
a. Go slowly in congested areas, over rough ground and on slopes. Keep the
machine’s speed slow enough to be in COMPLETE CONTROL AT ALL TIMES.
b. Give loaded vehicles the right of way. Follow employer’s traffic rules for the job site.
Watch out for other vehicles.
c. LOADER: Position the bucket three or four feet above the ground and rolled back so it
does not block vision when traveling.
DOZER: Position the blade one or two feet above the ground and rolled back so it
does not block vision when traveling.
d. The bucket/blade should not be used as a brake except in an emergency if all other
means fail.
e. LOADER: Load, carry and unload safely. When loading, try to park the machine on
level ground. Start and stop smoothly when carrying a load.
f. Stay back from edge of banks and pits. Edges can cave off or the machine can lose
its footing and slide over the edge.
g. Know the employer’s hand signals. It is important to know the exact meaning of all
hand signals applicable to and used during operation. Failure to correctly respond to a
hand signal could result in severe injury or death. Accept operational signals from one
person only, but accept an emergency shutdown signal from anyone who gives it.
h. Be alert. Be aware of what is going on around the machine. Maintain a safe operating
distance between the machine and other equipment and personnel.
i. LOADER: When dumping into hauling vehicles, BE CAREFUL NOT TO HIT THE
VEHICLE with the loader lift arm or bucket.
j. Use care on slopes. Operate straight up and down slopes whenever possible. Use
extreme caution during any side hill operations. NEVER DESCEND A GRADE FASTER
THAN THE MACHINE COULD CLIMB THAT SAME GRADE. Refer to TYPICAL
TRAVEL SPEEDS CAUTION SIGN.
k. LOADER: Keep the bucket close to the ground for stability. If an overload causes
the machine to tip forward, DO NOT PANIC - - LOWER THE LOAD TO THE GROUND,
and the machine will stabilize.
l. Be careful in a hazardous area. Whenever possible, two people should work together
in hazardous areas - one to operate the machine and the other to direct and watch for
dangers.
1. NEVER enter a dust cloud or a dark area such as an underpass or building before
checking it for obstructions or hazards that cannot be seen.
2. Watch for overhead dangers, such as overhanging trees or falling rocks. Do not
undercut banks. Keep a safe distance from overhead power lines -- and check
for buried power and utility lines before digging.
m. Report a malfunctioning machine. EVEN A MINOR PROBLEM CAN BECOME
SERIOUS. Report any mechanical problems to your supervisor.
...
SERVICE MANUAL
GENERAL OPERATIONAL SAFETY GUILDELINES CONT'D SAFETY IN MAT'L HANDLING OPER.
...

The right side window of the operator’s cab serves as an emergency exit.
Refer to OPERATOR'S CAB EMERGENCY EXIT for additional information.
END THE OPERATING PERIOD SAFELY
n. If the machine must be left unattended:
1. First, set the park brake switch.
2. Lower bucket/blade to ground.
3. Move engine select switch to the LO position. Let idle for four to five minutes.
4. Turn key switch to OFF position.
5. Place a "DO NOT OPERATE" sign on the controls if the machine must be left
unattended and safety or maintenance deficiencies exist.
a. Park in an unobstructed, flat area.
b. SHUTDOWN PROPERLY. First, set the park brake switch.
c. Move the engine select switch to the LO position and let the engine idle for four or five
minutes.
d. Place all controls in the OFF position and turn key switch OFF position.
e. To prevent unauthorized starting, remove the ignition key.
f. To prevent tampering, lock the cab door.
...
SERVICE MANUAL
GENERAL OPERATIONAL SAFETY GUILDELINES CONT'D SAFETY IN MAT'L HANDLING OPER.
...

SAFETY IN SERVICE AND REPAIR OPERATIONS
PRE-SERVICE OR REPAIR PREPARATIONS AND CAUTIONS
The machine’s large size and diesel-electric power unit make it necessary to take special
precautions to ensure a safe working environment.
The following precautions and procedures should be adhered to anytime the machine is
brought in for service or repair:
In addition to the following instructions, anyone performing service
operations to the machine should be familiar with the location and
operation of all service switches and connections as described in SERVICE
SWITCHES AND CONNECTIONS.
Use extreme caution when entering SR Converter Cabinet when the
machine is not running. Converter bus voltage present when red lights are
ON. See bus voltage indicator assembly located on back wall of cabinet.
High voltage is present
on the dynamic braking
grids when the
generator is primed and
operating.
Do NOT touch the
braking grids when the
generator is primed or
until five minutes after
the engine has been
shut down following
operation of the
machine. Contact with
the braking grid could
result in serious injury
or loss of life.
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS & FIGURE 2
...

NEVER open converter cabinet while engine is running. High
voltage is present when machine is at HI Throttle.
If inspection or
service procedures
involve contact
with any
component of the
electrical system,
opening the
electrical converter
cabinet or
removing axle
access covers, the
electrical system
MUST be locked
out and grounded.
Accidental contact
with energized
terminals could
result in serious
injury or loss of
life.
NEVER remove axle access panel on either axle unless electrical
system is locked out and grounded. Some Warning labels not
shown in above photo. Similar access panel is found on rear
axle.
Figure 2. SHOCK HAZARDS
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS & FIGURE 2
...

MACHINE STEERED STRAIGHT
(Arrows indicate crush hazard areas-present
on BOTH sides of machine)
The frame lock should be
moved to the locked position
ANYTIME service or repair
operations are being
conducted. This is especially
important when energized tests
of components are performed,
when work is being done in the
pivot area of the machine, or if
the machine is jacked up. There
is no room for a person in the
pivot area or the area between
the tires when the machine
turns. Service personnel should
enter this area only when
absolutely necessary.
...
SERVICE MANUAL
FIGURE 3
...

MACHINE ARTICULATED TO LEFT
(Arrows indicate crush hazard areas-present
on BOTH sides of machine)
The LINCS® computer system
provides a means of aligning
the front and rear frame for
installing the frame lock without
a person entering the pivot area
during the alignment process.
To use this method, access the
main menu on the LINCS®
computer system by pressing
the number “1” on the computer
keypad. Choose option #3,
“Channel Browser”. Next, press
“1” and use the left/right arrow
keys to choose “Hydraulics.”
Then, enter the number “2”,
which will enable data for the
machine’s various hydraulic
functions. Use the left/right
arrow keys to select “Steering.”
View the steering angle data.
Steer the machine left or right
until the angle is “0”. The front
and rear frames are perfectly
aligned and the frame lock can
now be moved to the locked
position.
CRUSH HAZARDS EXIST BOTH
SIDES OF MACHINE
...
SERVICE MANUAL
FIGURE 3
...

1. MOVE FRAME LOCK INTO UNLOCKED POSITION AND
SECURE WITH RETAINING PIN
Following completion of
service or repair
operations, it is critically
important that the frame
lock be removed from
the locked position and
properly stowed or
machine damage will
result.
(LEFT SIDE OF MACHINE AT PIVOT AREA)
Figure 3. CRUSH HAZARD AREAS
...
SERVICE MANUAL
FIGURE 3
...

(MOUNTED ON LEFT REAR OF MACHINE)
1. EMERGENCY STOP SWITCH
2. LIGHT SWITCH
3. MAINTENANCE LOCKOUT SWITCH
The maintenance lockout
switch should be used to
disable the machine’s
start function ANYTIME
the machine is under
service or repair. The
maintenance lockout
switch is mounted on the
left rear of the machine.
The key should be
removed from the key
switch on the operator’s
controls and a DO NOT
OPERATE sign attached
to the controls before any
inspections or service
procedures are begun.
Figure 4. MAINTENANCE LOCKOUT SWITCH
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS...CONT'D & FIGURE 4
...

If the machine becomes disabled in the field, it is recommended that only
sufficient repairs be made at the machine failure location to allow the
machine to be moved. Then, move the machine to a safe work area for
completion of repairs. Test the machine before returning it to work, as
required by the nature of the repairs.
a. Use of the SHOP MODE SWITCH. The machine is equipped with a shop mode switch
(refer to illustration "CAB CONTROL CONSOLE" for the location of the shop mode
switch on the operator’s console) that allows the operator to maneuver the machine
around the service area with the engine speed at 1500 RPM. To activate this mode, the
machine must be stopped and the engine select switch in the HI position. When the
shop mode switch is in the ON position, the shop mode is engaged and the machine will
travel at 5 MPH (maximum). Moving the switch to the OFF position disengages the shop
mode and the engine will return to HI throttle.
b. The operator should use assistance when moving the machine around the service area
and into and out of buildings.
c. BE SURE ramps, floors and aisles are adequate to support and clear the machine when
moving in and out of a building. Refer to DIGITALLY CONTROLLED MACHINE
SPECIFICATIONS for dimensions and weight of the machine.
d. If possible, conduct all service and repair operations with the machine parked on a level,
hard surface.
e. Block the machine to prevent it from rolling while working on or under it.
f. Lower the bucket/blade to the ground and use the main bleed valve assembly to vent
pressure in the hoist and bucket/blade circuit before beginning inspection, service or
repair operations. Refer to "MANUAL BLEED VALVE ASSEMBLY-LOADERS" or
"MANUAL BLEED VALVE ASSEMBLY-DOZERS" on page 018015 (d) for information to
vent pressure in the hoist and bucket or blade circuit (as applicable).
g. Set the parking brake.
h. Turn the filter purge timer switch to the OFF position (refer to illustration "FILTER
PURGE TIMER SWITCH BOX"). The filter purge timer switch is located on the left side
of the machine at the pivot area. Refer to SERVICE SWITCHES AND CONNECTIONS
for additional information on the filter purge timer switch.
i. Consider the size and weight of the machine and its components when jacking it up or
removing components and assemblies. BE SURE to have adequate hoisting devices,
tools and support facilities to accommodate the weight of the machine or its
components.
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS...CONT'D & FIGURE 4
...

Component weights are provided in GENERAL INFORMATION on page
001A027 (d), and jacking instructions are provided in JACKING
INSTRUCTIONS on page 004AA015 (d).
GENERAL SERVICE OR REPAIR PRECAUTIONS
(LEFT SIDE OF MACHINE AT LEFT PIVOT AREA)
Figure 5. FILTER PURGE TIMER SWITCH BOX
a. Wear a hard hat, protective glasses and other protective equipment as required by job
conditions.
b. NEVER use an open flame to check the battery, fuel, coolant or to look for leaks
anywhere on the machine. Use lights as provided or a flashlight.
c. DO NOT make unauthorized modifications to the machine. These modifications may
impair the function and safety and affect machine life.
d. NEVER put maintenance fluids such as oils, solvents, diesel, etc. into glass containers.
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS...CONT'D... & FIGURES 5 & 6
...

e. NEVER use gasoline for cleaning purposes.
f. Pressurized air can cause personal injury. When using pressurized air for
cleaning, wear a face shield and protective clothing.
g. Use stands to reach service or repair points.
h. BE CAREFUL with a hot cooling system. Liquid cooling systems build up pressure, as
the engine gets hot. Before removing the radiator cap, stop the engine and let the
system cool. Remove the radiator cap only after the coolant is cold and de-pressurized.
Refer to illustration "RADIATOR CAP".
...
SERVICE MANUAL
...

NEVER work on the engine while it is running unless specifically instructed
by the engine manufacturer. Serious injury or loss of life from
entanglement in rotating components is possible.
(LOCATED ON TOP OF TOW UNIT)
Figure 6. RADIATOR CAP
i. Keep clear of all rotating components. Wrapping, entanglement or contact by clothing
or extremities may result in serious injury or death.
...
SERVICE MANUAL
...

NEVER work on the engine while it is running unless specifically instructed
by the engine manufacturer. Serious injury or loss of life from
entanglement in rotating components is possible.
Diesel fuel, hydraulic fluid or grease under pressure can penetrate the skin
and cause serious personal injury, blindness or death. If any fluid is
injected into the skin, it must be removed within a few hours by a doctor
familiar with treating this type of injury.
Fluid leaks under pressure may not be visible. When searching for leaks,
NEVER use your hand; use a piece of metal. Wear work gloves and keep
your hand well away from the possible source of leakage. DO NOT tighten
or loosen fuel, hydraulic, or grease lines without first relieving the
pressure. Wear safety goggles for eye protection.
j. Hot oil and components can cause personal injury. Do not allow hot oil or components to
contact the skin.
k. Avoid prolonged and repeated skin contact with used oil. With prolonged and repeated
contact, serious skin or bodily injury may develop. Wash thoroughly after contact.
l. BE CAREFUL with fluids under pressure. The hydraulic system is under pressure
whenever the engine is running and will hold pressure after shutdown.
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS...CONT'D.
...

Battery post, terminals and related accessories contain lead and lead
compounds, chemicals known to the state of California to cause cancer
and birth defects or other reproductive harm.
WRONG
RIGHT
m. Refer to safety instructions in TIRE AND RIM MOUNTING AND DEMOUNTING before
inflating, deflating or removing or installing wheels and tires.
...
SERVICE MANUAL
SAFETY IN SERVICE AND REPAIR OPERATIONS...CONT'D.
...

OPERATOR’S CAB EMERGENCY EXIT
The window on the right side of the Operator’s Cab serves as an emergency exit.
For emergency exit, pull ripcord tab to remove cord completely from window frame and push
window out. Refer to illustration "CAB EMERGENCY EXIT - RIGHT SIDE CAB WINDOW".
Use the window for exiting the cab only in the event of an emergency.
Figure 7. CAB EMERGENCY EXIT - RIGHT SIDE CAB WINDOW
...
SERVICE MANUAL
OPERATOR'S CAB EMERGENCY EXIT & FIGURE 7
...

ROLL OVER PROTECTIVE STRUCTURE (ROPS) AND
FALLING OBJECT PROTECTIVE STRUCTURE (FOPS)
The machine is equipped with a Roll Over Protective Structure (ROPS) and a Falling Object
Protective Structure (FOPS). The ROPS provides the operator crush protection in a rollover
and the FOPS provides protection from objects falling onto the cab from above. The FOPS is
bolted to the top of the ROPS (illustration "ROLL OVER PROTECTIVE STRUCTURE AND
FALLING OBJECT PROTECTIVE STRUCTURE ASSEMBLY").
The ROPS structure is certified per government regulations. Any modifications
to the ROPS, such as welding on or drilling holes in the structural members will
affect the capability of the ROPS to provide adequate protection. Any
modification or repair to the ROPS without the specific approval of LeTourneau
Technologies will void its certification. Contact your authorized LeTourneau
Technologies distributor before making any modifications or repairs to ensure
that such will not void the certification.
SERVICE REQUIREMENTS
Check the torque on the ROPS torque nut capscrews after the initial 250 hours of operation
and every 500 hours thereafter. The proper torque is 114 ft. lbs. (154.6 N•m) lubed, per bolt.
Refer to illustrations "TYPICAL TORQUE NUT AS USED ON ROPS" and "ROLL OVER
PROTECTIVE STRUCTURE AND FALLING OBJECT PROTECTIVE STRUCTURE
ASSEMBLY".
The service intervals for the ROPS torque nut capscrews are listed on the
SERVICE UPON RECEIPT CHECKLIST and the MODULAR PREVENTIVE
MAINTENANCE SCHEDULES - POST BREAK-IN PERIOD.
...
SERVICE MANUAL
ROPS AND FOPS & FIGURE 8
...

Figure 8. TYPICAL TORQUE NUT AS USED ON ROPS
...
SERVICE MANUAL
ROPS AND FOPS & FIGURE 8
...

1. FALLING OBJECT PROTECTIVE STRUCTURE (FOPS)
2. BOLT
3. LOCKWASHER
4. FLATWASHER
5. ROLLOVER PROTECTIVE STRUCTURE (ROPS)
6. BOLT
7. PIN
8. CAPTURE PLATE
9. WASHER
10. TORQUE NUT
11. CAPSCREW
12. LOCKWASHER
13. BOLT
14. COVER STRUCTURE
15 REAR FRAME STRUCTURE
Figure 9. ROLLOVER PROTECTION STRUCTURE AND FALLING OBJECT
PROJECTIVE STRUCTURE ASSEMBLY
...
SERVICE MANUAL
FIGURE 9
...

TA9997-8
5
1
2
3
4
8
9
10
11
14
12
13
6
7
15
TA9997-8

EMERGENCY SHUTDOWN SWITCHES
A vpalm operated, (push-in, pull-out), pushbutton type emergency shutdown switch is provided
on the left inside cab wall in standard applications (illustration "CAB WALL MOUNTED
EMERGENCY SHUTDOWN SWITCH").
Three ground-level emergency shutdown switches are optionally provided on the
machine. These switches are palm operated (push-in, pull-out), pushbutton type switches. Two
are mounted on each side of the machine (right and left rear). One is located at the bottom of
the hydraulic tank on the right of the machine. Refer to illustrations "GROUND LEVEL
EMERGENCY SHUTDOWN SWITCH" for a photograph of the switch and "EMERGENCY
SHUTDOWN SWITCHES" for the typical mounting locations on the machine. Mounting
locations for the switches may vary depending on other options ordered.
LEFT REAR OF MACHINE
1. EMERGENCY SHUTDOWN SWITCH
2.
WORK AND LADDER LIGHT
SWITCHES
3. MAINTENANCE LOCKOUT SWITCH
Figure 10. CAB WALL MOUNTED
EMERGENCY SHUTDOWN
SWITCH
Figure 11. GROUND LEVEL EMERGENCY
SHUTDOWN SWITCH
LOCATIONS (1 OF 3)
...
SERVICE MANUAL
EMERGENCY SHUTDOWN SWITCHES & FIGURES 10, 11 & 12
Wed May 02 14:11:07 2007 MASTER L-950 002A029 ( d 1 )
...

OPERATION
When pressed, these switches deactivate the engine governor, which in turn kills the engine.
All AC voltages and most DC control voltages are deactivated when the emergency shutdown
circuit is actuated. The park brake is immediately set.
Power is restored when the emergency shutdown switch is reset, although the engine will
continue to die due to the governor configuration. Once the engine has stopped, the start
sequence may be reinitiated.
When the emergency shutdown or fire suppression systems are actuated, the automatic air
release valve, located on top of the hydraulic tank, will automatically release air pressure from
the hydraulic tank. Once tripped, the valve must be manually reset by pushing the button IN to
the closed position (illustration "HYDRAULIC TANK AIR RELEASE VALVE").
RIGHT REAR OF MACHINE
1. ELECTRICAL LOCKOUT SWITCH BOX
2. EMERGENCY SHUTDOWN SWITCH
3. BATTERY BOX
BOTTOM OF HYDRAULIC TANK
1. EMERGENCY SHUTDOWN
2.
FIRE SUPPRESSION ACTIVATION
SWITCH
Figure 11. GROUND LEVEL EMERGENCY
SHUTDOWN SWITCH
LOCATIONS (2 OF 3)
Figure 11. GROUND LEVEL
EMERGENCY SHUTDOWN
SWITCH LOCATIONS (3 OF 3)
Figure 12. HYDRAULIC TANK AIR RELEASE VALVE
...
SERVICE MANUAL
...

Bring machine to a complete stop before pressing emergency shutdown
switches. The parking brake will be immediately applied. Stopping action
will be immediate and positive.
Use emergency shutdown switches only in an emergency. Damage to
turbochargers could result.
Anytime the emergency shutdown function has been activated, the engine
and traction motors must be inspected by a qualified and experienced
technician before placing the machine back in service. Damage to
turbocharger bearings is possible.
...
SERVICE MANUAL
...

REFER TO ILLUSTRATION ON PAGE 002A030 (p1) FOR LOADER
REFER TO ILLUSTRATION ON PAGE 002A030 (p2) FOR DOZER
NUMBER OF SWITCHES AND LOCATIONS MAY VARY WITH
CUSTOMER SPECIFICATIONS AND INSTALLED OPTIONS. CHECK
YOUR MACHINE AND NOTE ANY ADDITIONAL LOCATIONS
1. INSIDE CAB WALL
2. LEFT REAR OF TOW UNIT
3. RIGHT REAR OF TOW UNIT
4. HYDRAULIC TANK
Figure 13. EMERGENCY SHUTDOWN SWITCHES - TYPICAL LOCATIONS-LOADER
AND DOZER
...
SERVICE MANUAL
FIGURE 13
...

REARVIEW MIRRORS
SIDE REARVIEW MIRRORS
Side rearview mirrors are mounted on each side of the operator’s cab to provide a rectangular
view of each side of the machine. The operator can use the rearview mirrors to check blind
areas when BACKING UP or MOVING SLOWLY to see if people, equipment or other
obstacles are in a dangerous position for operation of the machine.
The side rearview mirrors do not eliminate all potential blind spots behind
and to the side of the machine. The operator must be continually aware of
other personnel, vehicles and objects within the work area. Advise support
personnel to ALWAYS maintain a safe distance and visual contact with the
operator when in the area of machine operation. If unsure of location of
personnel or vehicles in the work area, exit the cab and look!
ADJUSTMENTS FOR VIEWING
The view scene includes the top edge of the tow unit and rear tire ground contact area. The
angles of view are approximately 70º vertical and 48º horizontal (refer to illustration
"RECOMMENDED SIDE REARVIEW MIRROR ADJUSTMENT AND APPROXIMATE FIELD
OF VISION" on page 002A032 (d&p).
The mirrors are convex with a spherical radius of 30” and are rectangular 20” long by 12”
wide. The support and mounting system provides protection from most contact with solid
objects. The mirrors also have a protective top cover that will readily swing aside if pushed by
another object.
The mirror’s sub assemblies, consisting of hold down plates, clamps, friction rings and
fasteners are designed to perform two functions (refer to illustration "SIDE REARVIEW
MIRROR INSTALLATION") on page 002A033 (p):
• The first function is to allow easily and accurately adjusted angle positioning of the
tubular support with the fasteners tightened sufficiently to hold the arm in trial
positions.
• The second function is to prevent damage to the mirrors by destructive forces such as
caused by the mirror’s encounter with an obstruction. This requires additional
tightening of the fasteners as described below. The U-bolt fasteners that attach the
mirrors to the support arm are not intended to slip during use and are loosened only for
trial tilt and reach adjustments of the mirror and support arm.
...
SERVICE MANUAL
REARVIEW MIRRORS
...

Pan, Tilt and Reach Adjustments
To make mirror adjustments the operator should be seated in his normal position and
operating posture. An additional person should be positioned on the platform outside the cab
to adjust the mirrors as directed by the operator. Refer to illustration "SIDE REARVIEW
MIRROR INSTALLATION" on page 002A033 (p) for component locations described in the
following instructions.
The best possible mirror adjustment will produce a view scene including
the top rear of the tow unit and the bottom of the rear tire, and without
losing too much of the side of the tow unit and tire, as large an area as
possible to each side of the machine. This must be accomplished with the
reach adjustment locating the mirror as near to the machine as possible.
MAINTENANCE
a. Loosen the post clamps and U-bolts enough for easy movement but tight enough to
prevent undesired position change during adjustment.
b. Move the mirror up and down (rotate around support arm) for vertical tilt angle
adjustment.
c. Slide the mirror housing inboard and outboard on the support arm for reach adjustment.
d. Swing the support post for horizontal pan angle adjustment.
e. After the mirror is moved to the desired position, fully tighten the pipe clamps.
f. Tighten the four fasteners on the top friction assembly so that when pressing at the
outboard end of the support arm pipe, maximum possible thumb-only pressure will
swing the arm. Loosen these four fasteners exactly two turns.
g. Repeat Step ”f” with the bottom friction assembly, except in this case, after thumb
pressure test, leave as adjusted and retighten the top friction assembly exactly two turns
of each fastener.
h. Check final adjustment with two thumbs.
i. If support arm extends more than two inches outboard from the mirror, cut off the
excess.
a. Replace damaged parts when necessary. Refer to the PARTS CATALOG for ordering
replacement parts.
b. Keep mirror glass clean by using window washing solution and wiping with paper towel.
c. If paint touch up is required, use RUSTOLEUM® #659.
...
SERVICE MANUAL
REARVIEW MIRRORS
...

Figure 14. RECOMMENDED SIDE REARVIEW MIRROR ADJUSTMENT AND
APPROXIMATE FIELD OF VISION
Illustration NOT to scale
Figure 14.1. TYPICAL "BLIND" AREAS ON LETOURNEAU EQUIPMENT
...
SERVICE MANUAL
FIGURE 14 & 14.1
...

TA9536-8
PLAN VIEW OF LOADER
APPROXIMATE 24°
MIRROR
RIGHT SIDE VIEW
(EACH MIRROR)
APPROXIMATE 70°
(EACH MIRROR)
APPROXIMATE SIDEWAYS
LIMIT OF VISION
APPROXIMATE UPPER
LIMIT OF VISION
APPROXIMATE LOWER
LIMIT OF VISION
TA9536-8
TA9536-8

1 FLOODLIGHT, QUARTZ 500W
2 LAMP, QUARTZ 500W-120V
3 LAMP ASSEMBLY, TURN SIGNAL
4 LAMP, SOC BAY 28V
5 LAMP, MIN BAY 28V
6 LAMP, TRAVEL - 24V
7 BOLT
8 LOCKWASHER
9 FLATWASHER
10 CUP MOUNT
11 BOLT
12 FLATWASHER
13 LOCKWASHER
14 CROSSMEMBER STRUCTURE, MIRROR/LIGHT
15 PIPE STRUCTURE, MIRROR
16 MIRROR ASSEMBLY AND MOUNTING GROUP
17 MOUNTING HARDWARE KIT
18 BOLT
19 PLATE, HOLD DOWN
20 RING, FRICTION - STEEL
21 RING, FRICTION - POLYETHYLENE
22 CLAMP HALF, SUPPORT POST
23 FLATWASHER
24 LOCKWASHER
25 NUT
26 MIRROR ASSEMBLY, CONVEX
27 NUT
28 LOCKWASHER
29 CLAMP, U-BOLT
30 LOCKWASHER
31 BOLT
32 BOLT
33 MIRROR, CONVEX
Figure 15. SIDE REARVIEW MIRROR INSTALLATION
...
SERVICE MANUAL
FIGURE 15
...

LIGHT BAR WITH MIRRORS
2
1 4
3 5
26
1
7
8
9
10
11
12 13
15
14
16
18
19
20
21
26
20
22 27
2823
32292417
3025
31
33
TA13015

SEAT BELTS
The machine is equipped with adjustable seat belts to accommodate operators of various
statures. The seat belts are mounted to the operator’s seat.
The operator’s seat must be properly adjusted for safe operation of all
controls and seat belt fastened before starting the engine to operate the
machine. Instructions for adjusting the air suspension operator’s seat are
located in AUTOMATIC AND MANUAL SEAT ADJUSTMENTS on page
003A022 (d).
Always check the condition of the seat belts and mounting hardware before
operating the machine.
SEAT BELT OPERATION AND ADJUSTMENT
Operation and adjustment of the seat belts is shown in illustration "SEAT BELT
COMPONENTS AND FASTENING/UNFASTENING PROCEDURES".
FASTENING AND UNFASTENING THE BELT
To fasten the belt:
Insert the tongue into the buckle. Listen for the “click” that indicates the belts are fastened.
Tug on the belts to be sure they are securely fastened (illustration "SEAT BELT
COMPONENTS AND FASTENING/UNFASTENING PROCEDURES").
To unfasten the belt:
Press the red button in the top of the buckle and pull the tongue from the buckle (illustration
"SEAT BELT COMPONENTS AND FASTENING/UNFASTENING PROCEDURES").
ADJUSTMENTS
The belt should be snug but comfortable. The left side belt only adjusts.
To lengthen the belt:
To shorten the belt:
a. With the belt unfastened, move the lock bar slide toward the buckle (illustration "SEAT
BELT COMPONENTS AND FASTENING/UNFASTENING PROCEDURES").
b. Pull on the buckle until the slack is removed from the outer belt loop.
c. Readjust the belt if it does not fit snugly.
a. With the belt fastened, pull on the outer loop to tighten the belt.
...
SERVICE MANUAL
SEAT BELTS & FIGURE 16
...

INSPECTION
a. Inspect for worn or frayed webbing.
b. Check for worn or damaged buckle or lock bar. Replace the entire assembly if worn or
damaged.
c. Inspect the belt mounting hardware. Replace any damaged or worn hardware. Keep
the mounting bolts tight.
1. MOUNT BRACKET
2. BELT
3. LOCKBAR
4. TONGUE
5. BUCKLE
Figure 16. SEAT BELT COMPONENTS AND FASTENING/UNFASTENING
PROCEDURES
...
SERVICE MANUAL
SEAT BELTS & FIGURE 16
...

FIRE PREVENTION AND CONTROL
In the event of a fire, the machine is optionally equipped with either a manually operated fire
extinguisher or a fire suppression system.
FIRE PREVENTION
Proper machine inspection and maintenance is CRITICALLY IMPORTANT to prevent a
disastrous fire. The following guidelines should be followed to reduce the chances of a fire:
a. Daily inspection and preventive maintenance at points where fires are most likely to start
- engine block, electrical system, turbochargers, exhaust manifolds, brake system and
hydraulic gearbox/pump area is critically important.
b. Regular cleaning of all areas where flammable materials such as fuel, oil, grease,
hydraulic fluid and combustible debris may collect is also critically important.
Refer to CLEANING AND COMPONENT INSPECTION on page 004AG001(d) for tips on
cleaning your machine.
c. NEVER smoke while checking fuel level or refueling. Unguarded trouble lights, flames,
or spark producing devices should be kept at a safe distance while refueling. ALWAYS
stop the engine before refueling the machine.
d. Keep all fuel and lubricants stored in properly marked containers and away from
unauthorized persons.
e. Store oily rags or other flammable material in a protective container, in a safe place.
f. Make sure all clamps, guards and heat shields are installed correctly to prevent
vibration, rubbing against other parts and excessive heat during operation.
g. DO NOT weld or cut on pipes, tubes or tanks that contain flammable liquids or gases.
...
SERVICE MANUAL
FIRE PREVENTION AND CONTROL & FIGURES 17
...

MANUAL FIRE EXTINGUISHER
Inspect the machine’s manual hand-held fire extinguisher regularly and read and understand
its operation. This fire extinguisher is capable of putting out fires in the following materials:
wood, paper, cloth, electrical, gasoline and oil.
a. If the extinguisher is equipped with a gauge, ensure the needle is in the green portion of
the gauge.
b. Ensure the pin is installed and the seal has not been broken.
c. Have the fire extinguisher inspected and serviced by licensed personnel at the required
interval or immediately if it has been discharged.
d. Read and understand your employer’s policy in regards to extinguishing fires before
attempting to manually extinguish any fire.
(MOUNTED BEHIND OPERATOR’S CAB NEAR WALKWAY)
Figure 17. HAND-HELD PORTABLE FIRE EXTINGUISHER
...
SERVICE MANUAL
FIRE PREVENTION AND CONTROL & FIGURES 17
...

FIRE SUPPRESSION SYSTEM - AFEX™ or ANSUL™ SYSTEMS (Optional)
The machine is equipped with a manual discharge fire suppression system. Operator safety is
greatly enhanced; however, the operator’s cab is not protected. It is the responsibility of the
equipment owner to ensure operators and service technicians read and understand the
manufacturer’s owner’s manual.
The fire system provided on the machine is a suppression system only and
is not designed or intended to extinguish all fires, particularly when
unusual amounts of combustible materials and an ample oxygen supply
are present. It is extremely important that alternative fire fighting
equipment be available in case the system does not totally extinguish a
fire.
Use extreme care to prevent the accumulation of debris, combustible
materials and fluids that could intensify the fire or cause it to spread to
areas where there was no previous potential for fire.
If modifications are made to the machine, or if the fire suppression system
is disconnected for any reason, make sure the fire equipment is
immediately inspected and tested by an authorized distributor for the
system’s manufacturer.
TA13488
(BOTTLES MOUNTED BOTH SIDES OF TOW UNIT)
Figure 18. FIRE SUPPRESSION SYSTEM BOTTLES - AFEX SYSTEM SHOWN
...
SERVICE MANUAL
FIRE PREVENTION AND CONTROL CONT'D & FIGURES 18 & 19
...

The fire suppression system’s dry chemical dispersion nozzles are
strategically located inside the front and rear frames. The operator’s cab is
NOT protected. The fire suppression system will NOT suppress fires
outside the machine or in the operator’s cab. The hand-held portable fire
extinguisher is recommended and is useful if re-ignition occurs or when
fires originate independently of the machine or outside the protected areas.
The discharge of the dry chemical fire suppression agent may create
personnel hazards such as obscured vision or temporary breathing
difficulties.
Bring machine to a complete stop and shut down engine before deploying.
System actuation will result in immediate discharge, which may obscure
vision.
The fire suppression system is a MANUALLY DISCHARGED system. Fire
detection is optionally provided, but the fire suppression system WILL NOT
automatically discharge.
FIRE DETECTION SYSTEM CIRCUIT MONITOR PANEL - ANSUL SYSTEM (Optional)
The fire detection system circuit monitor panel (optional) is mounted on the rear inside cab wall
(illustration "ANSUL FIRE DETECTION CIRCUIT MONITOR PANEL"). The circuit monitor’s
function is to monitor the fire suppression system’s electrical detection and manual actuation
circuits and provide the operator with both visual and audible warnings of a fire.
Visual indicators: The circuit monitor panel provides LED indicators for battery, alarm,
detection, release and power to the panel. In the event of fire detection, an audible alarm
accompanies the LED Alarm indicator.
Controls: The front panel contains a “DELAY” and “RESET” button. The DELAY button is
non-functional.
The RESET button is used to reinitialize the control panel when depressed; it provides an
indication that all LEDs and the audible alarm are functional.
Sequence of Operation: Upon receiving an input signal indicating a fire, the Alarm LED will
flash and the audible alarm will pulse at the rate of two times per second. Refer to MANUAL
ACTUATION on page 002A039(d).
...
SERVICE MANUAL
...

Figure 19. ANSUL FIRE DETECTION CIRCUIT MONITOR PANEL
(OPTIONAL)
...
SERVICE MANUAL
...

CIRCUIT MONITOR PANEL - AFEX™ SYSTEM
A circuit monitor panel is mounted on the rear inside cab wall. Refer to illustrations "FIRE
SUPPRESSION SYSTEM ACTUATOR SWITCHES" on page 002A041 (p) and "AFEX™
CIRCUIT MONITOR PANEL" on page 002A042 (d&p). The circuit monitor’s function is to
monitor the fire suppression system’s electrical detection and actuation circuits, including the
power source, squib (explosive charge which actuates the discharge of the fire suppression
agent), and continuity of the detection wiring.
The AFEX™ fire suppression system retains its manual discharge
capabilities should the circuit monitor panel or any of its internal circuitry
fail. If the circuit monitor panel must be removed for any reason, the fire
suppression system can be wired to retain its manual actuation feature.
Refer to the manufacturer’s owner’s manual through their respective
website.
The circuit monitor panel provides audible and visual indicators of alarm conditions. The
operator can monitor detection and release circuits and power supply. A system reset button
and restart time delay is also provided.
Visual indicators:
Controls:
MANUAL ACTUATION - AFEX™ AND ANSUL™ SYSTEMS
The machine is equipped with three manual firing mechanisms. One mechanism is located in
the operator’s cab (refer to illustration "FIRE SUPPRESSION SYSTEM ACTUATOR
SWITCHES" on page 002A041 (p). The other two mechanisms are located at ground level,
one mounted on the electrical converter cabinet on the left side of the machine and the other
mounted on the hydraulic tank on the right side of the machine (refer to illustration
"LOCATIONS OF FIRE SUPPRESSION SYSTEM ACTUATION SWITCHES" on page
002A042 (d&p). If the operator notices or is alerted to a fire, the following actions should be
taken:
• Green LED - Power to circuit monitor panel
• Red LED - Alarm
• Amber LED - Alarm silence activated - Trouble with squib - Trouble with detection circuit
• Alarm Silence
• Push to test
• System reset
• Push-on, Push-off operation (flush mounted behind panel cover)
1. Quickly bring the machine to a complete stop and shut down the engine.
2. Manually actuate the fire suppression system by pulling the safety pin from the neck
of the cab or remote firing mechanism and strike down HARD on the push knob/lever
(as applicable).
3. Quickly exit the machine and move to a safe distance away from the machine.
...
SERVICE MANUAL
FIRE PREVENTION AND CONTROL...CONT'D
...

When the fire suppression system is manually discharged, the hydraulic
tank automatic air release will be tripped. This will release the air pressure
in the hydraulic tank and in the rest of the hydraulic system. The automatic
air release valve must be manually reset by pushing the knob IN to the
closed position (refer to illustration "HYDRAULIC TANK AIR RELEASE
VALVE" on page 002A029(d).
FIRE DETECTION ENGINE SHUTDOWN OPTION
The LINCS® computer system is equipped with an engine shutdown option that will stop the
machine and shut down the engine when the fire suppressant is discharged. The engine
shutdown option must be enabled or disabled via the LINCS computer system and requires
service technician-level access.
4. Call fire department or mine safety personnel to extinguish the fire.
...
SERVICE MANUAL
...

Fire systems, installed at the LeTourneau Technologies factory, are manual
discharge systems. The LINCS® computer system or a LeTourneau, Inc.
factory-installed fire system, WILL NOT automatically discharge the fire
suppressant in the event of a fire. An electronic fire detection option is
available through fire system manufacturers that will audibly and visually
alert the operator of a fire. However, the discharge of fire suppressant and
actuation of the Fire Detection Engine Shutdown Option must be manually
actuated by discharging the fire suppressant with any of the actuator
switches. All operators of the machine should be trained in the operation
and capabilities of the fire suppressant system on the machine before
operation.
If the Fire Detection Engine Shutdown Option is enabled, the following sequence of events will
occur following discharge of the fire suppressant:
SYSTEM MAINTENANCE AND TROUBLESHOOTING
The fire suppression system requires regular inspection and maintenance. The manufacturer’s
recommended maintenance schedules are also located in the owner’s manual, which may be
obtained from the manufacturer’s website. System troubleshooting and wiring information is
also provided in the manufacturer’s owner’s manual appended to this publication.
Only personnel trained by the system’s manufacturer should service the
system. Certain components of the system contain an explosive charge
that can cause serious personal injury if not handled properly. Electronic
components of the system can also be damaged if not handled in the
proper manner.
Before performing welding operations or jumpstarting the machine, the
circuit monitor panel’s in-line fuse must be removed. Failure to do so may
cause the system to actuate and/or damage the solid-state components of
the system. Replace the in-line fuse after the machine has been started or
welding operations have been completed.
1. Propulsion is disabled.
2. Dynamic brake boost is actuated.
3. The automatic air release valve will release hydraulic tank pressure.
4. The engine will shut down once wheel motor speed is less than 100-rpm.
...
SERVICE MANUAL
...

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