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6.5 REPLACE WHEEL MOTOR
Each drive wheel is mounted to a hydraulic drive motor.
The drive motors are maintenance free. In the event of
a failure, the drive motors should be replaced.
To Replace a Drive Motor
1. Loosen the wheel lugs 1/4 turn.
2. Jack the drive wheels off the ground and securely
support the unit.
3. Remove the wheel.
4. Remove the brake caliper assembly by removing
the two bolts.
5. Unscrew the axle bolt at the center of the hub and
remove the hub. The hub is a taper fit on the axle.
Use a wheel puller to assist in removal.
6. Mark the hydraulic lines and remove.
7. Unscrew the two bottom bolts and pull the
hydraulic motor out.
8. Remove the four bolt sleeves.
9. Insert the sleeves into the four bolt holes in the new
hydraulic motor.
10.Slide the motor into place and secure with two
bottom bolts. Apply Loctite to bolts.
11.Reattach hydraulic lines to proper ports and
tighten.
12.Clean the axle and the inside of the hub. Place hub
over axle and lightly tap into position. Screw the
axle nut onto the axle and tighten to 300-400 ft. lbs.
13.Place the brake caliper into position and insert
bolts from the inside of the frame outward. Use lock
washer and nut and tighten.
14.Position wheel on hub and insert lug nuts finger
tight.
15.Tight lug nuts using the pattern shown in
Figure 17.
16.Lower the unit to the ground and start the engine.
Drive forward twenty feet and stop the engine.
Check the hydraulic fluid level. The dipstick should
read between the high and low markings.
1. Hub
2. Hydraulic motor
Figure 16
2
1
2
1
CAUTION:
Some fluid will leak out. Clean up
any spills.
1
2
3
4
5
OK0630
Figure 17