HYDRAULICS
8E-19
SECTION 8E. FRONT TRACTION MOTOR
GENERAL
The traction pedal and traction pump control the front
traction motors. The motor is mounted inside the front
axle with a hub mounted on the output shaft. The hub
contains the brake disc and is used to mount the
wheels, see Figure 8E-1.
Figure 8E-1. Wheel Hub and Brake Disc
REMOVAL
1. Shut down engine and remove ignition key.
2. Using jack stands and chocks, lift and support the
front axle.
3. Remove the wheel and tire.
4. Remove the brake return spring, caliper and sup-
port bracket.
5. Remove the cotter pin and nut from the motor out-
put shaft. Remove the hub and key.
6. Thoroughly clean the motor especially the area
surrounding the hydraulic fittings.
7. Tag and disconnect the hydraulic hoses from the
motor. Immediately plug the hoses and motor to
prevent contamination of the hydraulic system.
8. While supporting the motor, remove four mounting
bolts and lock washers.
9. Remove the motor from the axle (Figure 8E-2).
Figure 8E-2. Traction Motor Mounting
REPAIR
1. Disassemble motor as shown in Figure 8E-3.
NOTE:
When removing the port manifold cover, be care-
ful not to lose the two pins and springs between
the balance ring and cover.
2. Press the shaft and bearing assembly from the
mounting flange.
3. Remove and discard all seals, backup ring, and
seal rings.
Brake Disc Caliper and Disc Hub
Axle
Traction Motor
Key
Mounting
Bolts
Hub and
Brake Disc
Nut and
Cotter Pin
8E
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