WABCO 777B User manual

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TABLE OF CONTENTS
S-UBJECT
GENERAL INFORMATION. SECTION
· .A
POWER TRAI N .
• • B
WHEEL & PARKING BRAKE.
. .' '. . .
MOLDBOARD &CONTROLS.
AXL'E ASSEMBLY ..
LIC SYSTEM· ••
SYSTEM .. .... .".. . . .
-,
• ',II,:
,
.SCARIFIE~ &:'S'(ARIFIER ••.
·.I
· . J

SECTION A
GENERAL INF·ORMATION
PRE.OPERATING CHECKS .
A- 2
INSTRUMENTS AND CONTROLS .....
A- 4
OPERATING INSTRUCTIONS ..
A- •.~.•.
TORQUE CHART .
A- 9 ,_
. . . . . . . .
SPECIFICATIONS. A-IO
STORING AND SHIPPING A-12
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GENERAL INFORMATION
PRE.OPERATING CHECKS
BRAKES
1.
.
Check brake master cylinder for
proper fluid level.
2.
Operate brakes before moving ma-
chine to determine if they are op'-
erating properly. Check lines for
leaks.
CONTROLS
1. With engine running, operate blade
,.I'
lifts to lower moldboard until front
wheels are .clear of floor or ground.
Operate leaning wheel control and
steering control. Check for loose-
ness and interference. Lower front
wheels and check toe-in. It should
be ,;L/8" to 1/4".
'2. With engine running, operate later-
al shift controls and move lateral
shift rack through its complete
range of travel. Check for binding
or looseness.
3. Before and after starting engine,
observe all instruments and con-
trols for correct readings and op-
eration.
COOLINGSYSTEM
1. Check level of coolant in radiator.
For cold weather operation, a suf-
ficient amount of permanent type
anti-freeze must be in system to
protect engine.
2. Check tightness of radiator hose
connections and clamps.
ELECTRICAL SYSTEM
1. Visually check generator belt for
alignment. Check belt for proper
tension.
Check to make certain cranking mo-
tor will not operate unless power-
flow clutch pedal is in neutral posi-
tion. (Power-Flow models only)
2.
Check level of electrolyte in batter-
ies. Test specific gravity of elec-
trolyte to determine if batteries are
sufficiently charged.
3.
4. Operate all lights and accessories.
5. Check electrical connections for
tightness.
ENGINE
1. Check engine RPM to
engine is operating at
speed at full throttle as 1
low.
MODEL
777B Power-Flow
777BStandard
666B Power-Flow
~
666B Standard
GM
2,000
1,800
·2,100
2,000
2. On Power-Flow models
ation of tails haft
engine, shift lower
into fourth gear, shift clutch to for-
ward. Set throttle at 1/4 engine
RPM. Apply brakes. Tailshaft gov-
ernor should open up and operate
smoothly.
3. Check radiator, hoses and oil lines
for leaks. ..
4. Check crankcase oil level. Oil must
be up to "FULL" mark on dipstick.
GENERAL
1. Check drawbar draft ball for loose-
ness.

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1 ) .•;~
~ ..
2. Check all nuts and bolts for loose-
neas,
3. Make a visual check of entire ma-
chine cleanliness.
4. Check all belts for proper tension.
(Includes tailshaft governor drive
belt on Power-Flow models.)
5. Check clutch pedal free travel.
Check action of clutch brake.(Stand-
ard models)
6. Check parking brake.
HYDRAULIC SYSTEM
1. Attach a pressure gauge with a ca-
pacity of 3000 psi to Sundstrand re-
lief valve. With engine running, op-
erate hydraulic motor to stall posi-
tion and check pressure gauge read-
ing. Maximum reading with engine
at high idle should be 2750 psi.
erate Hydreco valve to move one
the hydraulic .cyltnders to stop.
should read 2000 psi at high
When operating any of the controls
with no load, tlle gauge should show
a maximum. of'~OO psi.
2. Check blade limit valves to make
sure they relieve the flow of oil to
motor just before lift arms reach
stop.
3. Check torque converter pressure.
Should be 35-50 psi. (Power-Flow
models)
4. Check power-flow clutch pressure.
Should be 130-145 psi. (Power-Flow
models)
5. Check all hydraulic lines for tight-
ness and crimping.
6. Check torque converter oil level
with bayonet gauge under seat.
(Power- Flow models)
7. Check hydraulic reservoir oil level
at sight gauge on L. H. side of re-
servoir.
8. Makea visual check of all hydraulic
piping and fittings for leaks.
LUBRICATION
1. Lubricate entire machine in accord-
ance with lubrication instructions in
Section J of this manual.
2. Check all c<p:nponents for proper
lubrication and oil level.
(a) Type "A" oil fOI;hydraulic com-
ponents, torque converter on
Power- Flqw modelsif and oil
clutch on"Standard :mOdels.
(b) 90 weight gear oil for upper
and lower transmission on
Standard models, also for low-
er transmission on 777B Pow-
er- Flb~:lfuodel.
(c) 10 weight engine oil for tan-
dems •
.(d) Special lubricant forgearhous-
ings.
3. Check all breathers.
WHEELSAND rmss
1. Check pressure on all tires. Refer
to specification page in this section
for correct pressures.
2. Check front wheels while steering.
They should turn same distance in
both directions. U:,correction is re-
quired, make adjustment as outlin-
ed in Section F.
3. Check wheel lug nuts for tightness.
Check each day for first few days of
operation and intermittently there-
after.

INSTRUMENTS AND CONTROLS
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INSTRUMENTSAND CONTROLS
~
1. Ripper Tilt
11.
Ground Speed Selector 20. Light Switch
2. Ripper Block 12. Horn Button 21. Engine Shut
3. L. H. Blade Lift 13. Key Switch (GM)
4. Scarifier Control 14. Gear Shift Lever 22. Engine Oil Pressure
5. Circle Reverse (1 Std) (2 PF) 23. Engine Temperature
6. Lateral Shift 15.• Parking Brake 24. Clutch Warning Light
7. Leaning Wheel 16. Accelerator-Decelerator 25. T/Converter Oil
8. R. H. Blade Lift 17. Wheel Brake Temperature (PF only)
9. Moldboard Power Shift 18. Clutch Pedal (PF shown) 26. Ammeter
10. Moldboard Tilt 19. Transmission Gear 27. Power Shift Clutch Oil
Brake (PF only) Pressure (PF only)
Figure 1 shows view of operating con-
trols as seen from the operator's seat.
Plates are attached to instrument panel to
identify the control levers. Arrows on plate
designate directional movement of controls.
material being worked.
,
.
Ripper Block Lever, Item 2. Use for
raising or lowering ripper block to get pro-
per tooth penetration.
Ripper Tilt Lever, Item 1. Use for tilt-
ing ripper teeth to proper angle for types of Left Hand Blade Lift Lever, Item 3. Use for rarsmg and lowering left hand end of
moldboard.
(,"
)
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Scarifier Control Lever, Item 4. Used
to raise and lower scarifier.
Circle Reverse Lever, Item 5. Use for
rotating moldboard clockwise or counter-
clockwise for correct positioning of mold-
board for type of work being done.
Lateral Shift Lever, Item 6. Use for
moving moldboard and circle right or left to
desired position for type of work being done.
Leaning Wheel Lever, Item 7. Use for
leaning front wheels to offset side thrust
caused by position of moldboard. For most
operations the top of the front wheels are
leaned away from the leading edge of mold-
board.
Right Hand Blade Lift Lever, Item 8.
Use for raising or lowering the right hand
end of moldboard.
Moldboard Power Shift Lever, Item 9.
e for shifting moldboard right or left for
extended reach or to clear obstructions such
bridge abutments, etc.
Moldboard Tilt Lever, Item 10. Use for
tilting moldboard to correct position for type
of work and material.
Ground Speed Selector Lever, Item 11.
Use for hand control of engine RPM.
Horn Button, Item 12.
Key Switch, Item 13, turns on the elec-
trical system. When turned clockwise to its
extreme position, it acts as starter switch.
Gear Shift Lever, Item 14. Use to shift
lower transmission gears through the four
gear ranges.
Parking Brake Lever, Item 15. Use to
set parking brake when machine is parked.
The parking brake is located on front end of
lower shaft of lower transmission.
Accelerator-Decelerator Pedal, Item 16.
Use as a foot throttle by pressing down on
forward pad to increase engine RPM. Or use
to decelerate engine RPM when working with
ground speed selector lever in a set posttton.
By pressing down on the rear pad, engine
RPM will be reduced. Remove foot from pad
and engine RPMwill increase to that as pre-
set with ground speed selector lever.
Wheel Brake Foot Pedal, Item 17. Use
to apply wheel brakes for bringing grader to
a halt. Each of the four tandem wheels are
equipped with a hydraulic actuated, shoe-
type brake.
Power Shift Clutch Pedal, Item 18. Use
to engage Power-Shift transmission clutches
(upper transmission). Depress toe of pedal
for forward motion. Depress heel of pedal
for reverse motion. Clutch pedal-must be in
neutral positionbefore starting motor circuit
will work.
,.r
Transmission Gear Brake Pedal, Item
19. To be used only when shifting transmis-
sion gears while grader is at halt. Do not
use when grader is moving. The gear brake
stops transmission gears from rotating while
shift is being made. Permits easier shifting
without clashing of gears.
Light Switch, Item 20. Controls light
circuits.
Engine Shut Down Button (GM Engine),
Item 21. Pressing button actuates solenoid
at engine governor to shut downengine. Hold
button in until engine stops. If grader is
equipped with lever instead of solenoid, the
pull knob will be located just under R.H. side,
of the operator's seat. Pull lever and hold
until engine stops. NOTE:' Do not use the
emergency engine shut down to stop engine
except in case of an emergency.
Engine Oil Pressure Gauge, Item 22.
Registers engine oil pressure. Gauge should
read 40 to 60 psi at high idle, 30 to 60 psi at

OPERATING INSTRUCTIONS
(POWER-FLOW MODELS)
SETTINGMACHINEINTO MOTION
'.{'._ The Power- Flowclutch pedal must be in
.. .......:Ileutral position before the cranking motor
wi'll operate.
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1200 RPM and a minimum of 18 psi at low
idle•.
Engine Temperature Gauge, Item 23.
The engine temperature gauge indicates the
temperature of the coolant in the engine's
cooling system.
Oil Clutch Warning Light, Item 24. Do
not engage clutch if light is on.
Torque Converter Oil Temperature
Gauge, Item 25. The torque converter tem-
perature gauge indicates the temperature of
the converter oil. Do not operate the grader
gauge needle is in the red section of
gauge, Should converter oil start to heat
Set ground speed selector (HandThrottle)
to approximately 1/4 open. Turn key switch
clockwise until engine starts.
Allow engine to warm up before start-
ing operation. Be sure instrument panel
gauges show pressure.
Do not spin tires when setting motor
grader into motion. Spinning the tires causes
a digging action which not only damages road
surfaces but causes excessive wear on the
tires.
Set ground speed selector to idle posi-
tion. With Power-Flow clutch pedal in neu-
tral posttion, press down ongear brake pedal,
Item 17, Figure 1. This will prevent upper
shaft of lower transmission from rotating
until proper gears can be engaged. Shift the
shifter lever, Item 13, into a gear suitable
for the type of work to be done.
up, shift transmission to next lower gear to
permit cooling of oil.
Ammeter, Item 26. The ammeter tndt-
.
cates the condition of the electrical system.
It should not show discharge when engine is
operating. If ammeter does show discharge,
see your WABCOdistributor for service.
Power-Shift Clutch Oil Pressure Gauge,
Item 27. This gauge shows the oil pressure
at the power-shift clutches. Pressure at
normal engine RPM should be 130 to 145
psi. If pressure drops to 60 psi at any time,
an investigation should be made to determine
the cause. Serious damage to clutch discs
will occur, due to slippage, if grader is op-
erated with low oil pressure.
LOWER
TRANSMISSION
SIllFTER
LEVER
3
1
4
2
Forward Motion: Press down on toe end
of Power- Flow clutch pedal.
ReverseMotion: Press down on heel end
of Power-Flow clutch pedal.
,
When movement of grader occurs, grad-
ually increase speed by pulling back onground
selector lever. After correct working speed
has been obtained, the tail shaft governor will
maintain this speed until the ground speed
selector lever position has been changed.

TAILSHAFT GOVERNOR
The tailshaft governor is an engine gov-
erning device which maintains, within limits,
a constant output shaft speed as load placed
on torque converter varies.
This governing device is driven by a
belt from the output shaft, thereby sensing
any variation in output shaft speed.
ACCELERATOR-DECELERATOR PEDAL
The accelerator-decelerator pedal is an
aid to the operator in controlling engine
RPM. Continuous use of the ground speed
selector lever is practically eliminated.
After the ground speed selector lever is
once adjusted for proper working speed, the
engine RPM can be decreased by pressing
down on the rear pad of accelerator-decel-
erator pedal. To bring the engine RPM back
up to RPM set by ground speed selector lev-
er, remove foot from pad of accelerator-de-
celerator pedal.
To increase engine RPM above that set
by ground speed selector lever, press down
on front pad of lever. To return. engine to
the pre-set speed, remove foot from front
pad.
ENGINE SHUT-DOWN(GM)
To shut down the GM engine, push the
ground speed selector forward to idle posi-
tion. Allow engine to run at idle a few min-
utes. Pull out engine shut-down lever (lo-
cated under R. H. side of seat). Hold lever
out until engine has stopped. Return lever
to II run II position. Turn off key switch. IJ.\oi-
PORTANT: Do not use the emergency engine
shut-down for normal engine shut-down. To
do so can cause damage to the blower seals.
ENGINE SHUT-DOWN (CUMMINSENGINE)
To shut down the Cummins engine, push
forward on the ground speed selector lever
to idle speed position. Allow engine to run
at idle for a few minutes. Turn key switch-
to off position. This will deactivate the
fuel pump solenoid, thus stopping flow of
oil to the injectors.
,,'
OPERATING INSTRUCTIONS
(STANDARDMODEL)
GOVERNORCONTROL LEVER
The engine governor control lever is lo-
cated on R. H. end of power control panel.
This lever is used to obtain various engine
speeds. To increase engine speed, pull back
on lever. To decrease engine speed, push
forward on lever.
STARTINGGM AND CUMMINSENGINES
Make certain that the upper and lower
transmissions are in neutral position before
starting engine.
Set governor control lever to approxi-
mately 1/4 open throttle. Turn ignition key
clockwise in ignition switch until engine
starts.
Allow engine to warm up before starting
operation.
3 1
R H
UPPER
TRANSMISSION
SHIFTER
LEVER
LOWER
TRANSMISSION
SHIFTER
LEVER
4
L 2
SETTING MACHINE INTO MOTION
Do not spin tires when setting motor
grader into motion. Spinning the tires caus-

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"
es. a digging action which not only damages
road surfaces but causes excessive wear on
the tires.
Set governor control lever to approxi-
mately 1/4 open throttle. Depress clutch
pedal all the way to floor board. NOTE: Do
not depres s clutch pedal all the way to floor
board when motor grader is in motion.
Shift ,upper transmission and lower
transmission into gears suitable for the work
required. See shifter chart. The outside
shifter lever is used to engage gears in low-
er transmission. The inside shifter lever is
used to engage gears in upper transmission.
Slowly raise clijtch pedal until movement
of motor grader has started, then permit
clutch p~~l... to. reach its extreme position.
.. . ~~:t::;:
Anti-Freeze Recommendations
>_. Anti-Freeze: Alcohol is not recommend-
>,"·:'.ed for protecting of cooling system in cold
Ifweathe'i!
;t
At the same time pull down on the governor
control lever until the desired working speed
has been obtained. Use the accelerator-de-
celerator pedals as explained previously to •
reduce or increase the engine RPM without
changingthe pre-set position of the governor
control lever.
ENGINESHUT-DOWN
Move governor control lever to idle po-
sition. Shift both upper and lower trans-
missions into neutral,
Turn' key switch to off position. This
will stop Cummins Engine. For stopping
GM Engine, pull out on engine shut-down
lever and hold until engine stops. Return
shut-down lever to its normal position. IM-
PORTANT: Do not use the emergency engine
shut-down for normal engine shut-down.
Permanent type anti-freeze (Ethelene-
Glycol) with rust inhibitor is recommended
for the cooling system. Refer to chart
recommended quantities.
MODEL 666B MODEL 666BPF MODEL 666B MODELS777B
~
GMENGINE GM ENGINE WITH CUMMINS AND777BPF
J
PROTtCT TO• 15 Gal. Ca2. 17 Gal. Ca2. 20 Gal. Ca2. 20 Gal. Ca2.
+25 0 ·F. 22-1/4 2-1/2 2-1/2
+20 0 F. 2-3/4 3 . 3-1/2 3-1/2
+10 0 F. 3-3/4 4-1/4 55
0 0 F. 55-3/4 6-1/2 6-1/2
_10 0 F. 66-3/4 88
_20 0 F. 6-3/4 7-1/2
99
_30 0 F. 7-1/2 8-1/2 10 10
-40 0 F. 8
9
10-1/2 10-1/2
,
,
A-8

TORQUE
BOLT ~ND CAPSCR RQUES
CONVERTER(Power-Flow Modcl~) . ";~,' " _
Output Shaft Bearing RetaineriNut #725409 (Stake) • . . '.
Pump Cover Bearing Retainer Nut #725417 (Stak~l,.,.
Reactor Sleeve Retainer Nut #725414 (Stake) ..•
Sleeve Flange Stud Nut #C 1522 .
PTO Gear to Pump Housing Capscrew #C 7569 .
Turbine Hub to Turbine Capscrew #725421 .
Pump Cover to Pump Capscrew #C 1604 .
Pump Cover Cap to Pump Cover Capscrew #727290 •..
50 ft. lbs.
-150 ft. lbs.
250-300 ft. lbs.
10-15 ft. lbs.
10-15 ft. lbs.
20-25 ft. lbs.
20-25 ft. lbs.
55-60 ft. lbs.
POWER-SHIFT CLUTCH (Power-Flow Models)
Upper Shaft Locknut #725146 (Stake).....
Lower Shaft Locknut #722073 (Stake) . . . .
Reverse Idler Shaft Locknut #722088 (Stake)
550-575 ft. lbs.
~~
NOTE: The above three locknuts and torques also apply to the standard upper trans
LOWERTRANSMISSIONAND FINAL DRIVE
,Upper Shaft Locknut #722073 (Stake).
Lower Shaft Locknut #722115 (Stake) . . . •
Bull Gear Bolts #722169 ...•.•...
Bull Pinion Shaft Bearing Cage Capscrews #920135.
Transmission Housing to Final Drive Housing Capscrews #92013
Outer Axle Carrier Capscrews #920136 .
Tandem Wheel Axle Locknut #5P 1258...•.......
550-575 ft. lbs.
550-575 ft. lbs.
250-265 ft. lbs.
175-190 ft. lbs.
250-275 ft. lbs.
250-275 ft. lbs.
600 ft. Ibs.
';11; "
ENGINE
Injector Clamp Bolt (GM) . . • .
Fuel Line Connectors (GM) . .
Rocker Arm Bracket Bolt (GM) •. '.
Injector Filter Cap (GM). . . .
Injector Adjustment Screw Locknut (Cummins) •.
.,. 25-30 Jt~!tlbs.
· 20-28 ft. lbs.
· 90-100 ft. lbs.
65-75 ft. lbs.
· 70-80 ft. lbs.
OIL CLUTCH (Standard Models)
Clutch Shaft Universal Coupling Capscrews. . • . . . . . . . . . . . . . . 70-80 ft. lbs.
GEARHOUSINGS
Worm Thrust Bearing Cap Studs #728431 .
Thrust Adjusting Screw Locknut #921580
. .;,. .
.
25 ft. lbs.
250 ft. lbs.
STEERING
Pitntan Arm Retaining Nut.
Steering Arm Ball Nut.
. . . . . . ..... . . . .
600-700 ft. lbs.
.. 420 ft. lbs•
...~ WHEELS
Wheel Lug Nuts #4P 1462
.. . . .. . . .. . . .. . . .. . ....... . .
120 ft. lbs,
A-9

MODEL 666B MODEL 777B
SPECIFICATIONS
MODELS666B AND 777B STANDARD
WEIGHTS, STANDARDEQUIPMENT (Approximate)
Equipped With GM Engine . . . .
Equipped With Cummins Engine . . . . . . . . . 27,100
28,100 32,100
32,300
OVERALLMEASUREMENTS
Length .
Width .
Height, With Cab .
Height, Without Cab (Top of Muffler)
27' 0"
7' 8"
10' 6"
10' 4"
27' 1"
8' 0"
10' 7"
10' 5-1/2"
SPEEDS IN MPH (Variable by Governor Control)
Forward - 1st
2nd .
3rd
4th
5th
6th
7th
:~i~everse-~:
/~:j(''. 2nd .
3rd
4th
Creeper - 1st
2nd
3rd .
2.2
3.2
4.4
.
" .
6.3
10.0
14.1
16.2
23.0
1.8
3.6
8.1
1'.3.2
.28
.55
1. 27
2.2'
3.2
4.4
6.2
9.9
14.0
16.0
22.8
1.8
3.6
8.1
13.1
.26
.51
1.2
SERVICE CAPACITIES (U.S. Standard Measurement)
Fuel Tank.....•. ".....•.
Cooling System (GMEngine). • . . . ."
Cooling System (Cummins Engine)...
Crankcase (Without Filter) GM Engine
Crankcase (Without Filter) Cummins Engine
Transmission (Upper And Lower) and Final Drive
Oil Clutch•......•...•..........
62' 82 Gals.
• '"J.•
15 ;'" 20 Gals•
20 Galsl,,,,.. '\ 20 Gals.
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3.5 Gals. .",.3.5 Gals.
5 Gals.
. 17.25 Gals.
8.5 Gals.
, 5 Gals.
,
0 ,25Gals.
.5 Gals.
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TIRE INFLATION
13.00 x 24 (12 Ply) Lug Tread. • • • • • 35 Lbs. ~j'
NOT::· ;;; ;~;~;c::o::::·e~tablfuhedhlghWay~..i~·a~onpres~ may ~~~t~:!
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/~"+,MODELS666B AND 777B POWER-FLOW
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WEIGHTS, STANDARDEQUIPMENT (Approximate)
Equipped With GMEngine. . . .
Equipped With Cummins Engine .
OVERALLMEASUREMENT
Length .
Width .........•.
Height, With Cab. . . .
Height, Without Cab (Top of Muffler) .
SPEEDS IN MPH (Variable by Governor Control)
Forward '- 1st .
',:'2nd.
3rd .
4th.
Reverse - 1st .
2nd.
3rd.
4th.
SERVICE CAPACITIES (U.S. Standard Measurement)
Fuel Tank . . . . . . . . . . . . . . . . ...
Cooling System .... : . . . . . . . . . . . . .. . l·····
Crankcase (Without Filter) GM Engine . . . . .. ~i~.~:t~·,,,.
Crankcase (Without Filter) Cummins Engine '.' . . .:!:~~;}~~.
Torque Converter and Power Shift Transmis~Wri." . \.t,'f:i.'f:' ••
Torque Converter, Lower Transmission aP.,d Fifuii t!>.'?Hve
Lower Transmission and Final Drive.. t. .'; ••••••
TIRE INFLATION
13.00 x 24 (12 Ply) Lug Tread.
16.00 x 24 (12 Ply) Lug Tread ..
MODEL 666B MODEL 777B
27,400 32,250
32,450
27' 0" 27' 1"
7' 8" 8' 0"
10' 6" 10' 7"
10' 4" 10' 5-1/2"
3.6 3.5
7.0 7.0
16.0 15.6
25.3 25.1
:
3.2 3.1
6.2 6.2
14.0 13.9
22.8 22.3
62 Gals.
17 Gals.
3.5 Gals.
82 Gals.
20 Gals.
3.5 Gals.
5 Gals.
10 Gals.
13 Gals.
35 Lbs. 30 Lbs.
~,
NOTE: For maintenance work on estayltslled highways, inflation. pressure may be·increased
25%if desired. " .'
\
A-ll

STORING AND SHIPPING
STORING
When a motor grader is not to be used
~for a period of time, it should be stored in a
dry and protected place. To leave a unit
standing in an open field or yard exposed to
rain andsnow will result in materially short-
ening its life.
When the machine is to be out of service
for an extended period of time, the following
steps should be taken.
Clean all dirt and mud off the machine.
Paint the moldboard and all other surfaces
which should be kept bright with a heavy coat
of grease. Touch up all painted surfaces
where'th~i;,p~!.nthas been scraped off.
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Lubricate the' engine as described under
"Engine Storage Instructions" of the Engine
Manufacturers Operators and Maintenance
Manual.
Cover the exhaust pipe. Raise all wheels
clear of the ground and place blocks under
the front axle and the tandem housings so
that no weight is supported by the tires.
Drain the cooling system and leave the drain
plugs open. Remove the battery and store it
in a place where it will not be damaged. The
battery should be periodically charged (on~e
every month or six weeks) to insure its not
going "dead".
SHIPPING
When the motor grader is to be shipped
to a new location, certain precautions should
be observed. The climate conditions during
transit and at destination, method of trans-
portation and time in transit should deter-
mine the precautions to be taken. If the mo-
tor grader is to be in transit for a long per-
iod of time or will not be used immediately
A-12
upon its arrival, the same precautions should
be taken for shipping as outlined previously
for storing. The only exception to this i,~ the
battery. It should not be removed frorif'the
but should be disconnected. How-
motor grader is to be in transit
days, the following precilu-
be sufficient. .,
The air pressure in the tires ShOUld,i~,;al-'
ways be checked and brought up to rec~m-
:."r\
mended pressure in order to prevent ':~my
danger or excessive bouncing of the,machine
in transit. The radiator and fuel tank should
be drained. The battery should be discon-
ever,
for
nected.
Cover the exhaust pipe. Paint themold-
board and all other surfaces which should be
kept bright with a heavy coat of grease. This
will prevent rusting of the polished surfaces.
Place blocks at front and rear sides of
each wheel. The blocks should be about 12" ~'
high and sawed to fit the tires. Also place
blocks at least 6" high against outside of
each tire. Nail all blocks down securely.
Use heavy-gauge wire, steel straps,
. ,;'cables or chains to de the grader down to
the car or truck bed. Tie the front enddown
on both sides and tie the rear end down-by
passing the ties or straps over the rear axle
housing between the tandem housings and the
final drive.
If the moldboard is to be left attached to
the circle, it should be turned so that it does
not extend out past the width of the car or
truck bed. In such cases, it is also advisable
to lower the moldboard to the bed of the car
as this will materially lessen the vibration
of the machine during transit.

SECTION B
POWER TRAIN
INDEX
ENGINE .
POWER TRAI N.•...
TORQUE CONVERTER
CONVERTER SUPPLY PUMP ..
. .,. . . . . .
RELIEF VALVE .
TAILSHAFT GOVERNOR ..
POWER SHIFT TRANSMISSION ...
CONTROL VALVE .
.••...• B- 2
· .B- 6
· .B- 8
• .B-14
.B-15
.B-16
.B-19
.••. B-24
ENGINE CLUTCH (OIL). .. . . . . . . • ••• B-25
UPPER TRANSMISSION (STANDARD MODELS). • • .B-37
LOWER TRANSMISSION (STANDARD MODELS) • • .B-43
FINAL DRIVE .B-47
TANDEMS ...
AXLE CARRIERS.
UNIT INSTALLATION
TROUBLE SHOOTING ..
.B-50
· .B-53
• .B-55
• .B-57
B-1

ENGINE
The engine can be removed from the
grader without first removing the radiator.
Likewise, the entire power train can be re-
moved from the main frame without first re-
Removal
The following procedure for engine re-
moval covers the points to be disconnected
before engine can be removed. This proce-
dure can be used as a check list toassure all
disconnects have been made prior to lifting
from grader. Also use it as a check
all points have been connected
.. in plug from lower radiator
.,;"'I~!,,,,,;,:oI'l·"I;'" coolant from radiator. NOTE:
to prevent coolant from
To remove air cleaner from side of
radiator, see l<'igure 1. Loosen hose clamps
and remove' elbow (1). Remove air cleaner
mounting bands (2) and remove air cleaner
(3). Remove air cleaner indicator (4).
FIGURE 1. Am CLEANERREMOVAL
1. Elbow 3. Air Cleaner
2. MountingClamps 4. Indicator
B-2
General
moving the engine. For convenience and log-
ical order in disassembly and reassembly,
the various sub-assemblies will be treated
as separate items.
Removefour capscrews and lockwashers
attaching hood to top of radiator. Remove
two capscrews and lockwashers attaching
sides of hood to sides of radiator. Remove
four capscrews and lockwashers attaching
side plates to radiator and battery box and
remove side plates.
Disconnect tail light and stop lightwires
at quick disconnects located at lower left
hand side of radiator.
Loosen clamps and pull radiator hoses
free of engine inlet and outlet fittings. In-
spect hoses for damage or deterioration.
Attach sling and hoist to radiator and
take up slack.
Remove six capscrews and lockwashers
(3 on each side) attaching lower radiator sup-
port to engine mount support and move radi-
ator away from machine. Lower to floor
taking care not to damage hose connections.
Radiator installation will be the reverse
sequence of removal.
HOODAND LINKAGE
Loosen clamping bolt securing exhaust
stack to muffler and remove stack.
Refer to Figure 2. Loosen.nuts on hook
bolts (1) at front corners of hood sufficiently
to permit releasing hooks from hood. Low-
. er hood to ground.
Removepositive wire from back of hour-
meter (2).

FIGURE 2. HOOD & LINKAGE REMOVAL
1. HookBolt
2. Hourmeter 3. Throttle Linkage
4. Shut-Down Linkage
Disconnect throttle linkage (3) at right
hand side of engine flywheel housing. Move
linkage clear of engine.
Disconnect emergency shut-down link-
age (4) at lever immediately above gener-
ator.
BATTERIES
Remove battery boxcover. Loosen bolts
in battery terminal cable clamps (1). Refer
to Figure 3. Expand terminals slightly and
lift clamp from positive and negative posts.
Do not exert force to free clamps as this
may damage batteries.
FIGURE3. BATTERY REMOVAL
1. Cable Clamps 3. Starter Solenoid
2. Connecting Cable
If batteries are to be removed from box,
disconnect cable joining them together. (2).
Remove U-bolt securing batteries in place
and lift batteries from box. CAUTION:Take
care not to spill electrolyte. Battery box
may be removed by J;emoval of capscrews
securing it to mounting brackets.
"
Disconnect cable at starter solenoid
terminals (3).
ELECTRICAL
Refer to Figure 4. Disconnect the three
leads at voltage regulator terminals (1).
Identify wires for easy identification at time
of reassembly. Disconnect wires at pres-
sure switch (2) and free from clamps secur-
ing it to side of engine. Mark wires for easy
identification.
FIGURE 4. ELECTRICAL DISCONNECTS
1. Voltage Regulator 2. Pressure Switch
Disconnect wire at engine shut-down
solenoid terminal. Disconnect pull cable
from emergency engine shut-down. Remove
capscrew from cable clamp and remove ca-
ble from top of engine. CAUTION:As engine
is removed, be sure cable is free of all parts
and linkage to prevent damag~.
,
Refer to Figure 5. Disconnect wires at
generator terminals (1) and free from clamps
on side of engine. Disconnect air hose (2) .
leading to engine air box and cover ends to
prevent entrance "Ofdirt.
Disconnect ground cable, converter
B-3{,
,

housing to fuel tank, at converter housing.
FIGURE 5. GENERATORDISCONNECT
1. Generator Terminals 2. Air Hose
FUEL ANDOIL LINES
Refer to Figure 6. Close fuel shut off
valve (1). Remove fuel line (2) from valve
fitting. Remove fuel return line (3) from
fuel tank fitting. Remove converter 011 line
(4) at converter relief valve fitting. Dis-
connect drain back hose (5) at converter
housing.
FIGURE 6. FUEL LINES
1. Shut-Off Valve 4. Converter Oil Line
2. Fuel Line 5. Drain-Back Hose
3. Fuel Tank Fitting
Refer to Figure 7. Disconnect fuel line
(1)at top of primary filter (2). Remove tem-
perature sending unit from water jacket.
Carefully roll sending unit tube into a coil
and lay to one side of frame. If radiator was
not removed, disconnect tail light and stop
B-4
light wires. Disconnect fuel return line. If
grader is equipped with a cab heater, dis-
connect hose. Fasten ends of fuel lines and
water hose up to prevent run-off of fuel and
FIGURE 7. FUEL FILTER
1. Fuel Line 2. Primary Fuel Filter
Refer to Figure 8. Remove hose COI1-
necting oil gallery fitting (1) and copper tube
(2). This copper tube goes to oil pressure
gauge on instrument panel. Remove water
hose from front and rear of converter oil
cooler (3).
FIGURE 8. OIL LINE DISCONNECTS
1. Oil Gallery Fitting
2. Copper Tube
, 3.
,
Converter
Oil Cooler
Refer to Figure 9. Remove hose (1)
from fitting on relief valve (2). Remove tail
shaft governor flexible shaft (3) from tail
shaft governor drive pulley (4). Loosen cap-
screws (5) and remove "V" belt (6). Remove

FIGURE9. GOVERNORDRIVEPULLEY
REMOVAL(GMENGINE)
1. Relief Valve Hose
2. Relief Valve
3. Flexible Shaft
4. Drive Pulley
5. Mounting
Capscrew
6. "V" Belt
the twocapscrews and remove governor drive
pulley from bracket.
Remove the two drain back hoses from
the formed tube at bottom ofconverter hous-
ing.
ENGINEMOUNTSANDSUPPORTS
Attach engine lifting bar to engine lift-
ing eyebolts. Attach chain hoist to lifting bar
and take up slack.
FIGURE 10. POWER TAKE-OFF SHAFT
(Power- Flow Models)
1. Locking Clip 4. Retaining Ring
2. Collar 5. Oil Seal
3. Power Take-Off Shaft
Using a prick punch, make aligning marks
on converter output shaft universal coupling
hub and drive shaft. These marks will be re-
quired to help align universal couplings dur-
ing reassembly.
Reaching through L. H. opening of fuel
tank support, use a small s~rewdriver to
raise locking clips (1) on coupling collar (2)
of PTO shaft (3). Slide collar forward away
from coupling, Figure 10.
Refer to Figure 11. Remove nut (1) and
lower washer (2) from front engine mount
bolt. There will be shims on the washer.
Wire these shims to washer and identify as
being lower washer. These shims will be
required during reassembly.
FIGURE 11. ENGINE MOUNT
1. Mounting Nut 2. Washer 3. Shims
Remove capscrews and lockwashers at-
taching rear engine mounts to engine support.
Take up on hoist and raise engine as-
sembly just enough to remove weight from
main frame. Slide engine to rear far enough
for universal coupling splines to clear end of
drive shaft and PTO shaft.
Check to make sure all disconnects have
been completed. Raise engine and remove
from grader.
Engine can be set on floor with fan end
resting on rear engine support and block un-
der flywheel end.
B-5