LeTourneau-Westinghouse Company TOURNAPULL B Operating instructions

FOREWORD
'fre Mc-tntenonceand Repair Manual is especially designed for use by me=hcmics.The
material is arranged for easy reference and logical sequence of detail. The first section '
contains brief instructions on how to operate the machine, its specifications, and torque
chart. (Fora more complete explanation, refer to the Operator's ManuaL>
Thegreatf!r portion of the manual pertains to disassembly, service, and reassembly. Each
major mechanical division is dealt with individually. For example: The disassembly, serv-
ice, and reassembly ofthe radiator group is discussed as a unit. Thesame is true ofthe en-
gine and engine accessories, the final drives and so on throuqhout the~ntire ill'2:chanical
detail of the machine. Thus, if you have a repair problem on your machine, all material per-
taining to that part or parts will be grouped together in one section, ready Ior your quick
referenceand use.
Theillustrations used in this manual c,e typical of the componentshown and do not nee-
esscrily refer to anyone pcrti.nnor machine.
_'_.

To save you time and also
make it easy for you to find the
information needed, each section
in this manual has been indicated
with a tab.
To quickly find each section,
follow these two steps:
1. Hold manual in your right
hand ... flex book (as illu-
strated in figure, 1) so you
can see corresponding black
tabs p~nted down right hand
edges of inside pages.
2. Slide thumb down edge of
manual to section desired ...
and open (see figure 2.)
#
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TABLE OF CONTENTS
GENERAL INFORMATION A
COOLING, AIR AND FUEL SYSTEMS B
ENGINE AND COCKPIT C
A.C. GENERATOR D
FINAL DRIVES G
BRAKES, WHEELS AND TIRES H
STEERING ASSEMBLY I
MOTOR, GEAR BOX AND MAIN SWITCH J
MAINTENANCE AND LUBRICATION K
ELECTRICAL THEORY AND TESTING L
MODEL B REAR DUMP 0
MODEL B CRANE p
INDEX Q
__________________ _..~ •.•h--~~

GENERAL INFORMATION
INDEX
DRIVE SYSTEM
ELECTRICAL SYSTEM
PREPARING NEW UNIT FOR OPERATION
OPERATING INSTRUCTIONS
Instrument Panel
Cockpit
Starting The Engine
Stopping The Engine
Steering and Braking
Changing Speed
TOOLS
TORQUE CHART
SPECIFICATIONS
........ A-3
.. A-4
A-5
.A-5
....... A-7
.. A-8
.... A-9
.A-9
.......... A-IO
..................... A-II
.. A-I2
... A-I3
A-I

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FIGURE A-2. POWER SHIFT TRANSMISSION DRIVE SYSTEM
1. Engine
2. Generator
3. Transmission
4. Drive Shaft
5. Transfer Case
6. Output Pinion
7. Differential
8. Final Drive Pinion
9. Final Drive Gear
transfer case to the pinion. The output pinion is in
...w:ith the rin~1Jear on the differential. The
tion is carried from the ¢utput pinion through
the ring gear and differential to the final drive
pinions and final drive gears to the axles and
wheels.
STEP GEAR TRANSMISSION
The rotating engine flywheel is attached to and
drives the generator rotor and the secondary fly-
wheel which is attached to the rear of the gen-
erator rotor. The transmission clutch is attached
to and driven by this flywheel.
Power is transferred from the secondary fly-
FIGURE A-3. STEP GEAR TRANSMISSION DRIVE SYSTEM
1. Engine 4. Transmission 8. Differential
2. Generator 5. Drive Shaft 9. Final Drive Pinion
3. Flywheel Clutch 6. Auxiliary Transmission 10. Final Drive Gear
7. Output Pinion
wheel, through the engaged clutch to the trans-
mission. Fromthe transmission, power goes to the
auxiliary transmission at the rear of the machine
by means ofa drive shaft.
The spiral bevel pinion on the auxiliary trans-
mission output shaft drives the spiral bevel ring
gear and differential assembly. The differential
assembly drives the final drive pinions which in
turn rotate the final drive gears. The final drive
gears are splined to the final drive axles and
transfer the rotation and power to the drive
wheels.
ELECTRICAL SYSTEM
When a control switch on the instrument panel
is closed, or when the steering wheel is turned,
the main switch (in the circuit between the gen-
erator and the motor controlled by the closed cir-
cuit) is closed and the motor operates.
While the motor is operating the motor brakes
are automatically released. As soon as the opera-
tion ceases the brakes are automatically engaged,
thereby holding the load. Electric current is al-
ways available when the engine is running and
the generator is excited. <D.C.main switch on.)
Keep the engine operating at as near idle as
possible when operating any of the a.c. electric
motors. This assures that maximum efficiency is
being obtained.
FIGURE A-4. ELECTRICALSYSTEM
1. Batteries
2. Generator
3. Rectifiers
4. Transformer
5. Instrument Panel
6. Switch Panel
A-4
7. Motor
8. Conductor
9. D.C. Field Breaker Switch

GENERAL
PREPARING NEW UNIT FOR OPERATION
Check temperature and pressure of oil in the
power shift transmission.
Inspect machine thoroughly for external ap-
pearance and possible damage or theft during
shipment. Report any damage or shortage to rail-
road or carrier.
Remove all processing, protective material or
packing used to condition the machine for ship-
ment. Detach tools or bundles wired to the ma-
chine. Check condition and amount of tools
against packing list.
Check all lubrication points.
Check level of fuel oil in supply tank.
ENGINE AND ACCESSORIES
Fill radiator, check coolant. (Anti-freeze in
winter.)
Check drive belt adjustments.
Drain off small amount of fuel from the fuel fil-
ters to remove water or sludge.
Check oil level in air cleaners.
Check for water, oil, fuel or air leaks, before
starting and during operation of engine.
Refer to engine manufacturer's manual for ini-
tial starting instructions.
Check engine shut-off control (if equipped).
Start engine, observe operation. Check for any
unusual noise or abnormal engine performance.
Check engine oil pressure at pressure gauge on
instrument panel.
Check temperature of coolant at temperature
gauge.
TRANSMISSION
Check power shift transmission oil level. Refer
to Section "K" for correct procedure.
Check flywheel clutch adjustment (step gear
transmission only).
Check oil level of step gear transmission.
Check transmission for correct operation at all
speeds.
FINAL DRIVES
Check oil level in final drive and ring gear com-
partments.
BRAKES
Check for air leaks in air brake lines.
Check brakes for proper operation.
WHEELS AND TIRES
Check tire pressure (at atmospheric tempera-
ture). See Section "H" for correct tire pressures.
Check wheel bolts for tightness. Check each
shift for first few days of operation and then inter-
mittently thereafter.
ELECTRICAL SYSTEM
Check all electrical connections for tightness.
Check level of electrolyte in batteries.
Check specific gravity of battery electrolyte.
Check operation of lights and accessories.
Check ammeter on instrument panel. The am-
meter should show a charge with no load on the
electrical system and the engine at high idle m.c.
main switch on).
Check operation of limit switches and A.C. elec-
tric motors.
MISCELLANEOUS
Check air pressure gauge on dash panel. For
proper operation the air pressure should be from
90 to 120 pounds per square inch for the Tourna-
pull with scraper, and between 130 and 145
pounds per square inch for the Tournapull with
rear dump.
Hookup wire ropes to trail units.
Check trail unit hitch bolts for tightness. Check
each shift of operation for the first few days and
then intermittently thereafter.
OPERATING INSTRUCTIONS
The instructions which follow are intended to
acquaint the mechanic with the instruments and
controls and their proper use in operating the
ModelBTournapull and trail units.
It is imperative that the mechanic understands
the function and operation of each of the instru-
ments and controls. This knowledge is essential
for the proper maintenance and safe operation of
the machine, which will give longer machine life
with less unproductive down time.
CRANKING MOTOR SWITCH
Instrument Panel
For machines with Cummins engines, the crank-
ing motor switch also closes the circuit to the fuel
shut-off solenoid which controls the flow of fuel
The cranking motor switch (l) opens and closes
the circuit to the cranking motor solenoid. Press
the switch to operate the cranking motor. The
cranking motor delivers the initial momentum to
the engine necessary for its starting.
to the engine injectors.
FRONT LIGHT SWITCH
The front light switch (2) controls the front
A-5

1. Cranking Motor Switch
2. Front Light Switch
3. D.C. Main Switch
FIGURE A-5. INSTRUMENT PANEL
4. D.C. Main Switch Warning Light 8. Engine Temperature Gauge
5. Rear Light Switch 9. Air Pressure Gauge
6. Steering Motor Warning Light 10. Engine Oil Pressure Gauge
7. Air Horn Control Valve 11. Ammeter
12. Key Switch
13. Transm ission Temperature Gauge
14. Transmission Oil Pressure Gauge
lights. The light switch is a three position, toggle
type switch. The switch is off when toggle is cen-
tered. The lights are of the double filament type
with a high and a low beam. Move the toggle up
for high beam and down for low beam.
D.C. MAIN SWITCH
The D.C. main switch (3) opens and closes the
24 volt basic excitation circuit to the a.c. gen-
erator. When the toggle is to the left, the circuit is
closed (on), when the toggle is to the right the
circuit is open (off). The switch must be on before
any of the a.c. electric motors can be operated.
Open the switch when idling the engine for long
periods to prevent unnecessary drain on the stor-
age batteries.
D.C. MAIN SWITCH WARNING LIGHT
The D.C.main switch warning light (4) remains
on at all times when the D.C.main switch is on.
REAR LIGHT SWITCH
The right light switch (5) controls the light on
the trail unit. Lift the toggle up to turn on the
light, push the toggle down to turn off the light.
STEERING MOTOR WARNING LIGHT
The steering motor warning light (6) remains
on at all times unless the temperature of the
steering motor exceeds the safe operating range.
Should the light go off, allow a short interval for
the motor to cool and the light to come on again
before resuming operation. Should the light con-
tinue to go off at short intervals, the trouble
should be located and corrected.
AIR HORN CONTROL VALVE
The air horn control valve (7) operates the air
horns which are located under the hood. Press
in on the valve to operate the horns.
A-6
~------'--
ENGINE TEMPERATURE GAUGE
The engine temperature gauge (8) indicates the
temperature of the coolant in the engine's cooling
system. The temperature range after the engine
has been warmed up and is operating under nor-
mal conditions should be from 160to 185 0 F.
AIR PRESSURE GAUGE
The air pressure gauge (9) indicates the amount
of compressed air in the air supply tank, in pounds
per square inch. Correct operating pressure for
the Tournapull with scraper is 90 to 120p.s.i.. and
130to 145p.s.i. for Tournapull with rear dump.
ENGINE OIL PRESSUREGAUGE
The engine oil pressure gauge (10) indicates
the pressure, in pounds per square inch, of the
oil in the engine's pressure lubricating system.
Normal operating pressure, after engine warm up,
and at operating speed is as follows:
GM 6-110 .. 25p.s.i.
Cummins NRTO-6-BI.. 30to 50p.s.i.
AMMETER
The ammeter (11) indicates the rate of charge
or discharge of the storage batteries. At high idle
with no load on the electrical system the ammeter
should register a charge, when the D.C. main
switch is closed.
KEY SWITCH
Thekey switch (2) opens and closes the 24 volt
circuit to the cranking motor switch. Also the basic
excitation circuit to the D.C. main switch. To start
engine turn the switch to the on position, complet-
ing the circuit to the cranking motor switch.
For machines with Cummins engines only, turn
key switch to the off position to stop the engine.
This opens the circuit to the fuel shut-off solenoid,
stopping the flow of fuel to the engine.

TRANSMISSION TEMPERATURE GAUGE
The transmission temperature gauge (13) indi-
cates the temperature of the hydraulic fluid in the
power shift transmission. Normal operating range
is from 100to 250 0 F.
TRANSMISSION OIL PRESSURE GAUGE
The transmission oil pressure gauge (14) indi-
cates the pressure of the hydraulic fluid in the
power shift transmission. Normal operating range
is from 100to 225pounds per square inch.
HOURMETER
The hourmeter (Fig. A-6) indicates the number
of hours of engine operation. Instructions on how
to use are as follows:
Example:
l st digit, 10,000hour track
Short hand is pointing between 1 and 2. The
first digit will be 1.
2nd digit. 1.000hour track
The next longer hand is pointing between 2 and
3. The second digit will be 2.
FIGURE A-6. HOURMETER
3rd digit. 100hour track
The longest hand is pointing between 7 and 8.
The third digit will be 7.
4th digit. 100hour track.
In order to get the last digit the outer track has
ten graduations between any two numbers. Each
graduation is equal to one hour. Again reading
the longest hand, it will be noted that it is 4
graduations past the number 7. The last digit will
be 4. The total then recorded on the hourmeter
will be 1.274hours.
Cockpit
FIGURE A-7. POWER SHIFT COCKPIT FIGURE A-8. STEP GEAR COCKPIT
1. Parking Brake Lever 4. Steering Wheel 7. Quick Release Lever 10. Transmission Control Lever 13. Auxiliary Shift Lever
2. Brake Pedal 5. Hand Throttle 8. Cold Weather Starting Aid 11. Clutch Pedal 14. Clutch Brake Pre-Select Valve
3. Accelerator 6. Motor Control Switches 9. Hydraulic Retarder Control 12. Transmission Shift Lever
PARKING BRAKE LEVER
The parking brake lever (1) operates a cable
operated, band type brake over a drum that is at-
tached to, and revolves with, the auxiliary trans-
mission or the transfer case input shaft. To apply
brake, pull lever back. To release the brake, push
lever forward.
BRAKE PEDAL
The brake pedal (2) operates a metering type
air valve controlling air flow to the wheel brakes
for slowing and stopping the machine.
ACCELERATOR
The accelerator (3) controls the rate of flow of
fuel oil to the diesel engine. To increase engine
speed, press the accelerator pedal down. To de-
crease the engine speed, release the pressure on
the accelerator pedal.
STEERING WHEEL
The steering wheel (4) operates the switches
which control the reversible a.c. electric motor,
A-7

which turns the Tournapull. To turn either right
or left turn the steering wheel in the direction of
the turn desired. The Tournapull will not auto-
matically return to the "straight ahead" position
when the wheel is released. The wheel must be
turned in the opposite direction to bring the Tour-
napull back in line with the trail unit. To stop the
turning action of the Tournapull. stop turning the
wheel. The steering motor will continue to oper-
ate, up to the limit of turn, as long as the steering
wheel is held in the turning position.
HAND THROTTLE
The hand throttle (5) is connected to the ac-
celerator linkage and may be used to maintain a
fixed engine speed without use of the accelerator.
MOTOR CONTROL SWITCHES
The motor control switches (6) control the oper-
ation of the electric motors which in turn control
the operation of the trail unit. Pushing the switch
up results in an upward or forward movement.
Pushing the switch down results in a downward
or rearward movement.
QUICK RELEASE LEVER
The quick release lever (7) operates the quick
drop assembly on the scraper body cable drum.
The lever is interconnected with the hoist motor
control switch. Pushing the lever forward releases
the quick drop permitting the scraper body to drop
free. Pulling the lever back closes a control switch
and completes the circuit to the hoist motor,which
raises the bowl. To lower the body slowly use the
hoist control switch on the control panel. The hoist
control switch can also be used to raise and lower
the body, independently of the quick release lever.
COLD WEATHER STARTING AID
The cold weather starting aid (8) is a tank type
primer for cold weather starting.
HYDRAULIC RETARDER CONTROL
The hydraulic retarder control (9) applies the
retarder when pulled back, and releases it when
pushed forward.
TRANSMISSION CONTROL LEVER
The transmission control lever (10) is used for
gear range selection on machines equipped with
power shift transmissions.
CLUTCH PEDAL
The clutch pedal (11) is a foot operated pedal
which disengages or engages the flywheel clutch
on machines with step gear transmission. Depress-
ing the pedal disengages the clutch, releasing the
pedal engages the clutch.
TRANSMISSION SHIFT LEVER
The transmission shift lever (12) extends up-
ward from the deck of the cockpit to the right of
the operator. The shift lever is used in conjunction
with the flywheel clutch to select the various
transmission gear ratios.
AUXILIARY SHIFT LEVER
The auxiliary shift lever (13) extends upward
through the cockpit deck to the right and forward
of the operator. The lever is used to select the
desired auxiliary gear range. When the lever is
forward the auxiliary is in the low range. Move
the lever to the rear for high range. See "Chang-
ing Speeds" forcorrect procedure.
CLUTCH BRAKE PRE-SELECTVALVE
The pre-select valve (14) delivers air pressure
to the clutch brake interlock valve to aid in up
shifting the transmission from one gear to an-
other.
FIGURE A-9. REAR DUMP HAND BRAKE VALVES
1. Tournapull Brake Valve 2. Rear Dump Brake Valve
HAND BRAKE VALVES
The hand brake valves (Fig. A-9) control the
flow of air to the Tournapull and trail unit wheel
brakes, independently of the foot pedal. By mov-
ing the left valve handle to the left (on) the Tour-
napull brakes are applied independently of the
trail unit. Bymoving the right valve handle to the
left (on) the trail unit brakes are applied inde-
pendently of the Tournapull. With both valve han-
dles moved to the right (off) the foot valve con-
trols all fourbrakes.
Starting the Engine
Read and follow carefully the instructions out-
lined in the engine manufacturer's manual.
Check to be sure emergency shut off control is
pushed all the way in (if machine is so equipped).
Shift transmission lever into the neutral posi-
A-8
tion. Turn on the key switch. Push left on the d.c.
main switch-press accelerator about half way
down, and press the cranking motor switch.
NOTE: Do not operate the cranking motor more
than 30 seconds at one time.

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Changing Speeds
can be obtained through all five transmission
speed ranges by combination shifting of the trans-
mission and auxiliary.
Always disengage the clutch completely before
changing gears.
A clutch brake is mounted on the transmission
countershaft to aid in shifting gears. This clutch
brake is to be used only when shifting the trans-
mission into a higher gear. Donot use when down
shifting.
Toshift out of neutral into l st speed forward or
reverse use the following procedure. Depress the
clutch pedal to disengage the flywheel clutch.
Push in on the clutch brake pre-select button. Shift
the transmission into l st or reverse immediately
after pushing in on the pre-select button. This is
necessary as the clutch brake is only applied
momentarily while the transmission is in neutral.
To up shift into a higher travel speed use the
following procedure. Push in on the clutch brake
pre-select button. Depress clutch pedal. Shift the
transmission shift lever or auxiliary shift lever
into the desired position.
To down shift to a lower travel speed it is nec-
essary to "double clutch".
To "double clutch" when shifting to a lower
gear range, depress the clutch pedal and shift the
transmission into neutral. Engage the clutch (with
transmission still in neutral), accelerate the en-
gine to a speed which corresponds to road speed
in the lower gear. Disengage the clutch, shift
transmission into the lower gear range, then en-
gage the clutch and accelerate the engine simul-
taneously.
Drive down grades! Keep the transmission in
gear and the clutch engaged. Coasting with the
transmission in neutral will cause the countershaft
to spin at excessive speed far beyond the speeds
encountered during normal operation. The coun-
tershaft gears move at such a low speed in com-
parison to the mainshaft that they are unable to
provide an oil circulating pump action adequate
enough to supply the lubrication necessary for
the mainshaft gear bushings. Bushing failure will
probably result.
For smoother operation of the machine progres-
the stop. Springs release the brake after the foot
is removed from the brake pedal and the air pres-
sure is released.
Machines equipped with power shift transmis-
sions have a hydraulic retarder brake included as
part of the torque converter and transmission. A
torque limiting valve protects the transmission
POWER SHIFT TRANSMISSION
The power shift transmission may be up shifted
or down shifted with the engine at high idle re-
gatdless of the load. However,a down shift should
not be made if the MACHINESPEEDexceeds the
MAXIMUMSPEEDthat can be attained in the next
lower range. Down shifting under this condition
will overspeed the engine and cause serious dam-
age.
The transmission control lever has seven posi-
tions, 4 positions forward, neutral, and 2 posi-
tions reverse. The positions are clearly marked on
the shifting quadrant.
To select a gear range, move the control lever
to the desired position marked on the quadrant.
For smoother operation of the machine, progres-
sive shifting is recommended.Donot skip positions
when up shifting or down shifting.
STEP GEAR TRANSMISSION
Following are some suggested practices for the
operator when shifting from one gear ratio to an-
other. The actual shifting procedure to be followed
depends upon the operator's technique which will
improve with practice.
AUXILIARY MAIN
TRANSMISSIONTRANSMISSION
LOW
HIGH
FIGURE A-l1. SHiniNG DIAGRAM (STEP GEAR)
The auxiliary transmission provides intermedi-
ate gear ratios between the transmission gear
ranges. For example: transmission in first speed,
auxiliary in high range, obtains a speed between
first speed (transmission), low range (auxiliary),
and second speed (transmission), low range (aux-
iliary). These intermediate steps in speed range
A-IO
fromabsorbing excessive brake horsepower. How-
ever, machine speed on downgrades should not
be permitted to become so great as to overspeed
the engine in any of the gear ranges. The retard-
ing force developed by the brake is up to 6 times
greater than that available by using the engine
alone.

sive shifting is recommended. Do not skip gears
when up shifting or down shifting.
If the clutch is disengaged with the transmis-
sion in gear while the machine is coasting down-
grade, and then re-engaged again it will cause a
sudden slow down resulting in a shock load on
the transmission gears, thus causing abnormal
strain. Ultimate failure will result.
The shifting diagram (Fig. A-II) shows the va-
rious positions of the gear shift lever and auxili-
ary shift lever used to obtain the different gear
ratios.
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TOOLS
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FIGURE A-12. TOOLS
1. Wrench-30 ToothSpline(ForAxle Nut, 8. Wrench-42 ToothSpline(For
BevelPinion,GeneratorNut and #3 Differential Adjusting Nut)
Gear BoxOutput Shaft Nut) 9. Wrench-19 ToothSpline(ForBevel
2. Adaptor-30 ToothMaleand 25 Tooth Pinionand #3 Gear Boxlst Reduction
FemaleSpline(ForAxle Nut) Gear Nut)
3. Adaptor-25 ToothMale and 14Tooth 10. Adaptar-30 ToothMale and 22 Tooth
FemaleSpline(ForMotor Retainer FemaleSpline(ForGeneratorNul)
and BrakeHub Nut) 11. SpannerWrench(For#3 Gear
4. Wrench-P,4" Hex (ForWheel Bolt) BoxBearingRetainer)
5. WrenchExtension 12. Allen Wrench-V2"
6. WrenchHandle-19 ToothSpline 13. Adaptor-30 ToothMale and 30 Tooth
(For# 3 Gear Box lst Reduction FemaleSpline(ForBevelPinionand
Gear Nut #3 Gear BoxOutput Shaft Nut)
7. Adaptor-16 ToothMale and 11Toath 14. Wrench-l
%" Socket(For
Female(UseWith #6) Kingpin Ball Cap)
15. Wrench-42 Tooth Spline
(ForKingpin TopNut)
16. HydraulicTire RemovalTool
17. Tire RemavalBar
18. Tire RemovalRatchet
19. Adaptor-Valve Stem
20. BoxWrench-12 Point, %" xl"
(ForGeneratarTo PrimaryFlywheel)
21. Wrench---{ForElectricMotor Brake)
22. SteeringMechanismTaperheadWrench
(Leftand RightHand)
23. TransmissionClutch Shaft
LocknutWrench
24. Quick ReleaseDrumLocknutWrench
A-ll
---
--~

TORQUE CHART
LOCATION TORQUE
A.C.Motor Bearing Retainer Nut __ __ 350 Ft. Lbs.
A.C.Motor Hub Locknut - 300 Ft. Lbs.
Air Brake Mounting Capscrews ---- ----------__ 190 Ft. Lbs.
Air Brake Retainer Ring ToBacking Plate Capscrews _ 30 Ft. Lbs.
Differential Cage Capscrews _ ---- ------_ 285 Ft. Lbs.
Differential Carrier ToHousing Bolts -----______ 870 Ft. Lbs.
Differential Bearing Cage Capscrews _ _ 285 Ft. Lbs.
Drive Shaft Retainer Nut (Castellated) _ ___ _ 580 Ft. Lbs.
Final Drive Axle Locknut _ -----------------------2000 Ft. Lbs.
Generator Adaptor Locknut ------ -- _1200 Ft. Lbs.
Generator Stator ToFlywheel Housing Capscrews _ __ _ __ __ 40 Ft. Lbs.
#2 Gear Box Output Gear Locknut _ 2000 Ft. Lbs.
1st Reduction Gear Locknut --- - 100 Ft. Lbs.
2nd Reduction Gear Locknut __ _ ------------------------- 200 Ft. Lbs.
#3 Gear Box Output Gear Locknut ---------------- --- 2000 Ft. Lbs.
1st Reduction Gear Locknut _ _ - ---------- - - ----------- 100 Ft. Lbs.
2nd Reduction Gear Locknut _ -_ 200 Ft. Lbs.
Bearing Plugs _ _ _ __ _ __ --------------- 400 Ft. Lbs.
Bearing Retainer Capscrews _ _ - 60-110 Ft. Lbs.
#6 Gear Unit Axle Nut _ 8000 Ft. Lbs.
Bearing Retainer Nut ___ _ ------- --- 200 Ft. Lbs.
Ring Gear to Differential Carrier Bolts ------------- 285 Ft. Lbs.
Rear DumpAxle Locknut _ _ ------------ 450 Ft. Lbs.
Steering CircleGear Taperhead Capscrews _ __ _ 540 Ft. Lbs.
Steering CircleGear Flathead Capscrews _ 360 Ft. Lbs.
Steering Trunnion Ball and Socket Capscrews _ _ 580 Ft. Lbs.
Transmission Mainshaft Rear Locknut __ _ -- -- 500 Ft. Lbs.
Transmission ClutchShaft and Drive Gear Locknut -- 100 Ft. Lbs.
Trail Unit HitchBolts __ _ 1400 Ft. Lbs.
Trail Unit Ball and Socket Capscrews - --------------360 Ft. Lbs.
Scraper Blade Bolts _ -_______ -- 265 Ft. Lbs.
Scraper Quick Release Drum Internal Gear Locknut __ __ - --- 2000 Ft. Lbs•
.. Scraper Quick Release DrumSun Gear Locknut __ 750 Ft. Lbs.
Wheel Mounting Capscrews __ __ - ---- -------- 870 Ft. Lbs.
Size
1/4/1
5/16/1
3/8/1
7/16/1
1/2/1
9/16/1
5/8/1
3/4/1
7/8/1
1/1
1 1/8/1
1 1/4/1
1 3/8/1
1 1/2/1
Capscrews and Nuts
Flat Head
8 Ft. Lbs. _ _ _
15 Ft. Lbs.
30 Ft. Lbs. _
50 Ft. Lbs._
70 Ft. Lbs.
90 Ft. Lbs. _
125 Ft. Lbs. _ _
190 Ft. Lbs.
265 Ft. Lbs. _
360 Ft. Lbs. _
450 Ft. Lbs. __
580 Ft. Lbs.
690 Ft. Lbs. __
850 Ft. Lbs. _
Taperhead
12 Ft. Lbs.
25 Ft. Lbs.
45 Ft. Lbs.
75 Ft. Lbs.
105 Ft. Lbs.
135 Ft. Lbs.
190 Ft. Lbs.
285 Ft. Lbs.
400 Ft. Lbs.
540 Ft. Lbs.
675 Ft. Lbs.
870 Ft. Lbs.
1000 Ft. Lbs.
_ 1275 Ft. Lbs.
A-12
\

SPECIFICA TlONS
LeTOURNEAU-WESTINGHOUSECOMPANY, whose policy is one of continuous improvement, reserves
the right to change specifications or equipment without incurring obligation as to units previously sold.
TOURNAPULL
ENGINE (DIESEL)
Number of Cylinders
Operating Cycle
Max. Brake Horsepower
CUMMINS NRTO-6-BI
6
4 Stroke
335 HP at
2100 RPM
Below 5,000'
900 Ft. Lbs. at
1500RPM
5 Va"
6"
743 cubic inches
HP Rated at
Maximum Torque
Bore
Stroke
Displacement
CLUTCH, Power Shift Transmission
Step Gear Transmission
GM 6-110
6
2 Stroke
325 HP at
2000 RPM
1,500' at 90 0
875 Ft. Lbs. at
1,600 RPM
5"
5.6"
660 cubic inches
.. Allison (Lock up type) Torque Converter
Rockford double plate 16"; air assist clutch release
TRANSMISSION,Optional
Power Shift Type .Allison CBT 5640, 4 speed Torqmatic with Torqmatic Brake
Step Gear Type Fuller L-1520 with LeTourneau-Westinghouse two-speed Transfer Case
SPEEDin MPH
Power Shift Step Gear Transmission
Transmission at 2100 RPM
Low Range High Range
Speed Speed Speed
.......
0- 4.8 2.8 4.0
0-10.6 4.9 7.1
0-21.2 9.6 14.0
0-31.7 16.8 24.5
20.7 30.1
3.7 2.8 4.1
5.6
lst, Forward
2nd
3rd
4th
5th
l st, Reverse
2nd
DIFFERENTIAL
SERVICE CAPACITIES (U.S. Standard Measurement)
Power transfer. automatic friction type no-slip differential
Cooling System
Crankcase
Fuel Tank
Final Drive (Main Case)
Step Gear Transmission
Allison Power Shift Transmission & Torque Converter
Transfer Case
CUMMINS
NRTO-6-BI
25 gals.
12gals.
147 gals.
70 gals.
4 gals.
16 gals.
1112 gals.
SCRAPER
CAPACITY
Cubic Yards, heaped
Cubic Yards, struck.
Tons.
GM 6-110
19 3/4 gals.
9 gals.
147gals.
70 gals.
4 gals.
1112 gals.
. 28
. .21
.32.5
A-13

SCRAPER OPERATING DATA
Apron opening. . . . . . . . . . . . . . . . . . . . . . . .
Depth of cut, maximum. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Depth of spread, maximum. . .
Type of ejection. . .
Cutting edge, length (three-piece) .
Center section .
Each end section (interchangeable)
7' I"
. Unlimited
. 20"
.forward, positive
· .... 10' 0"
. II/a" x 16" x 60"
..... I" X13" X3~''
CONTROLS . . Apron, bowl and tailgate controlled by
individual electric motors. Finger-tip control.
OVERALLMEASUREMENTS(With Toumcpull)
Length .
Width .
Height.
Wheelbase.
. .44' 2"
. 11'9"
. 12' 2"
. 26' 10"
Gauge, center to center tires, Tournapull.
Gauge, center to center tires, scraper.
Ground clearance, Tournapull.
Ground clearance, scraper maximum.
. .8' 0"
. .... 7' 9"
. .24"
· 19"
TIRES
Standard.
Optional. ............................... 27.00-33,24 ply rating, Rock Service
. 27.00-33,30 ply rating, Rock Service
Maximum turning angle.. . .
Width required for 180° turn.
. .Positive power steer, electric control
. 90° left and right
·... 39' 10"
STEERING.
BRAKES.
Square inches of braking surface.
Torqmatic Brake for Torqmatic Transmission.
Electrotarder ..
Parking Brake.
. .Multiple disc air brakes on all four wheels
. . . . . . . . . . . . . . . . . . . . . . . . . ... 6,552
. Standard
....... Optional
. standard, mechanical
WEIGHTS
Shipping weight, approximate
Power shift transmission, lbs..
Step gear transmission, lbs..
Distribution
Drive Axle.
Rear Axle.
Empty
69%
31%
69,800
.68,900
Loaded
53%
47%
REAR DUMP
CAPACITY Tons Cu. Yds. Cubic Yards, Heaped
Struck 1:1 2:1
Standard.
With Tailgate *. 35 35 23
24
31
33
27
30
*Note: Recommended only on installation where material permits a larger cu. yd. capacity
without exceeding the maximum tonnage capacity.
A-14

REAR DUMP MEASUREMENTS
Length. . . . .
Width. outside yoke.
Height. empty.
Height. extreme dump position.
Loading height. average.
Angle of dump. . .
.22' 8"
...12' 0"
. .14' 0"
. 20' 4"
.10'9"
. .... 58 0
BOWL MEASUREMENTS
Length .
Width.
.. 16' 3"
10'2"
7'0"
Depth. Maximum.
BODY CONSTRUCTION
Bottom .
..... 3 layer: 3f4" steel bottom; 1112" steel
reinforcing strips; 3f4" steel wear plate.
. . ..... liz" plate with 3f4 I' wear plate.
........... 3f4" plate with 3f4" wear plate.
Sides
Front.
HOIST. . Dumping controlled by LeTourneau-Westinghouse
electric motor. gear box and cable. Positive power up and down.
Length. . .
Length. dump position.
Width .
Height .
Height. dump position .
Wheelbase .
........ 36' 7"
. .31' 6 11
. .12'6"
. 14'0"
. 20' 4"
.20'8"
OVERALLMEASUREMENTS(With Tournapull)
Wheelbase. dump position. . .
Gauge. center to center tires. Tournapull .
Gauge. center to center tires. rear dump.
Ground clearance. Tournapull. . .
Ground clearance. rear dump.
................. 12'411
. .8' 0"
10' 0"
. 24"
. 34 1'
TIRES
Tournapull. standard.
Tournapull. optional.
Rear Dump. standard.
..... 27.00-33.24 ply rating. Rock Service
27.00-33.30 ply rating. Rock Service
.. 27.00-33.30 ply rating. Rock Service
STEERING.
Maximum turning angle. . .
Width required for 180 0 turn. . .
Width required for 180 0 turn. dump position .
.Positive power steer. electric control
. 90 0 left and right
. 35'
. .. 27'
BRAKES.
Square inches of braking surface
Electrotarder . . .
Parking brake. . .
Automatic emergency braking system
Torqmatic brake for torqmatic transmission
. .... Multiple disc air brakes on all four wheels
......... 7,488
. ... Standard
. .Mechanical. standard
Standard
Standard
A-IS

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