Jacobsen SLF 1880, Technical/Repair Manual

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8I-69
SECTION 8I. FRONT TRACTION MOTOR REPAIR
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 (Figure 8I-1).
Figure 8I-1. Wheel Hub and Brake Disc
REMOVAL
1. Shut off 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.
6. Using a suitable puller, remove the hub and key.
7. Thoroughly clean the motor especially the area
surrounding the hydraulic fittings.
8. Tag and disconnect the hydraulic hoses from the
motor. Immediately plug the hoses and motor to
prevent contamination of the hydraulic system.
9. While supporting the motor, remove four mounting
bolts and lock washers.
10.Remove the motor from the axle (Figure 8I-2).
Figure 8I-2. Traction Motor Mounting
REPAIR
1. Disassemble motor as shown in (Figure 8I-3).
2. Press the shaft and bearing assembly from the
mounting flange.
3. Remove and discard all seals, backup ring, and
seal rings.
4. Clean all the parts in a suitable solvent.
5. Inspect all the parts for wear or damage. The only
serviceable items are the shaft and bearing
assembly, shaft, nut, bolts, and seal kit.
Brake Disc Caliper and Disc Hub
NOTICE
When removing the port manifold cover, be careful
not to lose the two pins and springs between the bal-
ance ring and cover.
Axle
Traction Motor
Key
Mounting
Bolts
Hub and
Brake Disc
Nut and
Cotter Pin
8I