Jacobsen SLF 1880, Technical/Repair Manual

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8J-73
SECTION 8J. REAR (4 WHEEL DRIVE) TRACTION MOTOR REPAIR
GENERAL
The traction pedal and traction pump control the rear
traction motors. The motor is mounted inside a swivel-
ing motor mount, which is mounted to the steering axle
with a hub mounted on the output shaft, (Figure 8J-1).
The hub is used to mount the wheels.
Figure 8J-1. Rear Traction Motor
REMOVAL
1. Shut off the engine and remove the ignition key.
2. Lift the tractor and support the steering axle with
jack stands and chocks.
3. Remove the wheel and tire.
4. Remove the cotter pin and nut from the motor out-
put shaft (Figure 8J-2).
5. Using a suitable hub puller, remove the hub and
key.
6. Thoroughly clean the motor especially the area
surrounding the hydraulic hoses.
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 the four
mounting bolts and lock washers, (Figure 8J-2).
9. Remove the motor from the motor mount.
Figure 8J-2. Traction Motor Mounting
REPAIR
1. Disassemble motor as shown in (Figure 8J-3.)
2. Press the shaft and bearing assembly from the
mounting flange end.
3. Remove and discard all seals, backup ring, and
seal rings.
4. Clean all the parts in a suitable solvent.
5. Inspect the parts for wear and damage. The only
serviceable items are the shaft and bearing
assembly, shaft, nut, bolts, and seal kit,
(Figure 8J-3).
Hub
Motor Mount
Traction Motor
NOTICE
When removing the port manifold cover, be careful
not to lose the two pins and springs between the bal-
ance ring and cover.
Motor Mount
Traction Motor
Hub
Nut & Cotter
Pin
Mounting
Bolts
8J