7. Reverse procedure when installing a new valve.
8. Torque nuts (100) and capscrews (90) to 49 ft.
lb. (67 N•m).
REPLACING WINDSHIELD WIPER ASSEMBLY
The motor assembly (220) for the windshield wiper
is attached at the center of the windshield. Refer to
IPL Figure 17 to replace the motor assembly.
1. Remove wiper motor cover (215).
2. Disconnect electrical wires from wiper motor
(220).
3. Remove the wiper arm retaining nut (200), flat
washer (210), and wiper arm (190).
4. Remove self-locking nut (240), flat washer
(250) inside cab.
5. Remove screw (230) and flat washer (250)
outside cab.
6. Remove wiper motor (220).
7. Reverse procedure to install a new wiper motor
(220).
REPLACING WHEEL AND TIRE
Front Wheel
For replacement of the front tire and wheel, refer to
IPL Figure 1.
Removal
1. Place wooden blocks in front of and in back of
the rear wheels.
2. Jack up the front end of the grader, under the
wheel that is to be removed so it is just
touching the ground.
3. Place wooden bracing under the frame in the
event the jack slips.
4. Remove the 12 nuts (120) securing the front
wheel (100 or -130) to the axle, then remove
wheel.
Installation
NOTE: Be sure tires are mounted on the rim
with proper tread orientation as shown
in the IPL.
1. Slide the front wheel (100 or -130) onto the
axle with the tire oriented as shown in the IPL.
2. Secure the tire to the axle with the 12 nuts
(120) and studs (110). Be sure flat side of nut is
toward tire rim.
3. Using a torque wrench, torque the nuts in a
star pattern to even the tension on the wheel as
the nuts are tightened. Torque nuts to 460 ft. lb.
(628 N•m).
4. Remove the wooden bracing from under the
frame and lower to the ground.
5. Check tire pressure. Pressure should be 35 psi
(241 kPa) (2.45 bar).
Rear Wheel
For replacement of the rear tire and wheel, refer to
IPL Figure 4.
Removal
1. Place wooden blocks in front of and in back of
the front wheels.
2. Jack up the rear end of the grader, so that the
wheel that is to be removed is just touching the
ground.
3. Place wooden bracing under the frame in the
event the jack slips.
4. Remove the 12 nuts (230) securing the rear
wheel (210 or -240) to the axle, then remove
wheel.
Installation
NOTE: Be sure tires are mounted on the rim
with proper tread orientation as shown
in the IPL.
1. Slide the rear wheel (210 or -240) onto the axle
with the tire oriented as shown in the IPL.
2. Secure the tire to the axle with the 12 nuts
(230). Be sure flat side of nut is toward tire rim.
3. Using a torque wrench, torque the nuts in a
star pattern to even the tension on the wheel as
the nuts are tightened. Torque nuts to 460 ft. lb.
(624 N•m).
4. Remove the wooden bracing from under the
frame and lower to the ground.
5. Check tire pressure. Pressure should be 35 psi
(241 kPa) (2.45 bar).
Section 4
MAINTENANCE
4-24
785 Motor Grader
Courtesy of Machine.Market