Toro 4100-D service manual Input Shaft/Pinion Gear, Removal Fig

Input Shaft/Pinion Gear

35 to 41 ft-lb			1	18
(47 to 56 N-m)		2
	3

			4	17
		6	5
8	7			16
9				18
				15
10
10				14
9				13
11				35 to 41 ft-lb
				(47 to 56 N-m)
	12

Figure 30

1.	Nut (2 used)	7.	O-ring	13.	Shim
2.	Lockwasher (2 used)	8.	Seal collar	14.	Screw (2 used)
3.	Stud (2 used)	9.	Bearing	15.	Gear case
4.	Locknut	10.	O-ring	16.	Gasket
5.	Stake washer	11.	Input shaft/pinion gear	17.	Cover plate
6.	Oil seal	12.	Bearing case	18.	Dowel pin

The following procedures assume the rear axle assem- bly has been removed from the machine (see Rear Axle Assembly Removal in this section).

Removal (Fig. 30)

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 (Fig. 30)

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. 31). 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.

6.Set the bearing preload by securing the bearing case in a vise. Thread a M12 x 1.5 hex head cap screw into the splined end of the input shaft/pinion gear and slowly tighten the locknut until 4 to 6 in-lb (0.4 to 0.7 N--m)of force is required to rotate the input shaft/pinion gear in the bearing case.

Axles, Planetaries and Brakes Page 6 -- 24 Groundsmaster 4100--D