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Groundsmaster 4000−DPage 6 − 22Axles, Planetaries, and Brakes (Rev. B)
Input Shaft/Pinion Gear
Figure 28
1
1. Nut
2. Lockwasher
3. Stud
4. Locknut
5. Stake washer
6. Oil seal
7. O-ring
8. Seal collar
9. Bearing
10. O-ring
11. Input shaft/Pinion gear
12. Bearing case
13. Shim
14. Screw
15. Gear case
16. Gasket
17. Cover plate
18. Dowel pin
2
3
4
5
6
7
8
9
10
9
11
12
13
14
15
16
17
10
18
18
35 to 41 ft−lb
(47 to 56 N−m)
35 to 41 ft−lb
(47 to 56 N−m)
The following procedures assume the rear axle assem-
bly has been removed from the machine.
Removal
1. Remove the cover plate, gasket, and gear case as-
sembly from the axle assembly. Remove the gasket and
any remaining gasket material.
2. Remove the retaining rings and the driven gear from
the input shaft/pinion gear.
3. Remove input shaft/pinion gear assembly from the
gear case. Remove the shims and bearing case O-
rings.
4. Release the stake washer and remove the locknut.
Remove and discard the stake washer.
5. Drive the input shaft/pinion gear out from the outer
bearing cone and bearing case. Remove and discard
the oil seal and O-ring.
6. Inspect all gears, shafts, bearings, spacers, and
cases for damage and wear. Replace components as
necessary.
NOTE: Replacement input shaft/pinion gears are only
available in matched ring and pinion sets.
Installation
NOTE: When installing new bearing cones, press only
on the inner race of the bearing cone.
1. If the inner bearing cone was removed, press a new
bearing cone all the way onto the input shaft/pinion gear.
2. Place the shaft and bearing assembly in the bearing
case and install the outer bearing cone.
NOTE: The bearings must be completely seated.
There should be no input shaft/pinion gear end play.
3. Coat a new oil seal with grease and install as shown
(Fig. 29). The seal should be installed with the garter
spring towards the hydraulic motor.
4. Coat new O-ring with grease. Install O-ring in the oil
seal collar, and install the collar.
5. Install a new stake washer. Install the lock nut finger
tight.