Tool Required

J 42108 Pinion Seal Driver

1. Check the differential drive pinion gear inner and outer bearing preload.
2. Shake the differential drive pinion gear inner and outer bearing to check for differential drive pinion gear looseness if there is no preload reading. Defective bearings or a worn pinion flange could cause looseness.
3. The ring gear and the differential drive pinon gear may require replacement if the rear axle was operated for an extended period with very loose differential drive pinion gear bearings.

Remove the differential drive pinion flange. Refer to Differential Drive Pinion Gear Seal and Front Propeller Shaft Flange Replacement .





Important: Support the differential drive pinion gear as it is driven from the housing or place a piece of wood (3) for the differential drive pinion gear to drop onto upon removal.

4. Use a rubber faced deadblow hammer to drive the pinion gear (1) from the differential housing (2).



5. Remove the differential drive pinion gear bearing spacer (1) from the differential drive pinion gear (2).
6. Remove the differential pinion gear inner bearing from the differential drive pinion gear if replacing the bearing and/or replacing the differential drive pinion gear.

Tools Required

1. Remove the differential drive pinion seal from the rear axle housing.



2. Perform the following steps if replacing the inner bearing:

2.1.	Mount the J 42154 on the J 42176 .

2.2.	Position the J 42154 off center of the race to one side or the other where the tool can firmly seat on the race.

2.3.	Use a hammer or use a press to drive the differential drive pinion gear inner bearing race from the rear axle housing while rotating the tool around the edge of the race.




3. Remove the differential drive pinion gear shim (1) from the differential housing (2).
4. Use the J 22912-B and a press to separate the differential drive pinion gear inner bearing from the differential drive pinion gear.

Tools Required

1. Remove the differential drive pinion gear outer bearing from the housing.
2. Use the J 42154 and the J 42176 with a deadblow hammer or a press to remove the bearing.