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.