Removal; Installation; Input Shaft/Pinion Gear - Toro Groundsmaster 300 Series Service Manual

Input Shaft/Pinion Gear

The following procedures assume the rear axle assem-
bly has been removed from the machine.

Removal

1. Remove input shaft/pinion gear assembly from the
axle support. Remove the shims and bearing case O-
ring.
2. Release the stake washer and remove the locknut.
Remove and discard the stake washer (Fig. 18).
3. Drive the input shaft/pinion gear out from the outer
bearing cone and bearing case. Remove and discard
the oil seal and O-ring.
4. 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. 19).
4. Coat a 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.
6. Set the bearing preload be securing the bearing case
in a vise. Thread a M12 x 1.5 hex head capscrew into the
splined end of the input shaft/pinion gear.
7. Slowly tighten the locknut until 4.0 to 6.0 in-lbs. (0.4
to 0.7 Nm) of force is required to rotate the input shaft/
pinion gear in the bearing case.
8. Secure the lock nut with the stake washer.
4WD Rear Axle (Rev. G)
(Dae Dong Axle)
1. Lock nut
2. Stake washer
3. Bearing case
4. Bearing case O-ring
5. Inner bearing
6. Outer bearing
0.040 in. (1.0 mm)
2
1. Oil seal
Page 10.1 – 12
2
1
Figure 18
7. Input shaft/pinion gear
8. Bearing case shims
9. Seal collar
10. O-ring
11. Oil seal
1
Figure 19
2. Bearing case
Groundsmaster 328–D
7
5
4
8
3
6
9
10
11