Drive Pinion and Bearing Removal and Installation
REMOVAL PROCEDURE^ Tools Required
- J 22536 Pinion Driver
1. Remove the differential case.
2. Measure the differential drive pinion gear inner and outer bearing preload.
3. If no preload reading exists, then inspect for looseness of the drive pinion gear by shaking. The following conditions may cause looseness:
^ A worn drive pinion gear yoke
^ Defective inner or outer drive pinion gear bearings
4. If the rear axle was opened for an extended period with very loose inner and outer drive pinion gear bearings, the following components will require replacement:
^ The ring gear
^ The drive pinion gear
5. Remove the differential drive pinion gear yoke (1).
6. Install the J 22536
7. Use the J 22536 in order to install the drive pinion gear (1).
Apply heavy hand pressure on the J 22536 toward the rear axle housing in order to keep the outer drive pinion gear bearing seated.
The outer drive pinion gear bearing must remain seated in order to avoid damage to the outer race.
OUTER BEARING REMOVAL PROCEDURE
1. Remove the differential drive pinion gear seal from the rear axle housing.
2. Remove the drive pinion gear outer bearing from the rear axle housing (10).
3. Use a punch in order to remove the drive pinion gear outer bearing race from the rear axle housing, if the drive pinion gear outer bearing is being replaced.
Place the punch into the slots in the rear axle housing.
INNER BEARING REMOVAL PROCEDURE
^ Tools Required
- J22912-01 Rear Pinion Bearing Cone Remover
1. Remove the drive pinion gear bearing spacer from the drive pinion gear.
Discard the drive pinion gear bearing spacer.
2. Use a punch in order to remove the drive pinion gear inner bearing race from the rear axle housing, if the inner drive pinion gear bearing is being replaced.
Place the punch into the slots in the rear axle housing.
3. Use the J22912-01 in order to drive the inner drive pinion gear bearing from the drive pinion gear.
INNER BEARING INSTALLATION PROCEDURE
z6 Tools Required
- J 8092 Driver Handle
- J 29609 Rear Pinion Bearing Cup Installer
- J 5590 Rear Pinion Bearing Cone Installer
1. Use the J 5590 in order to install the inner drive pinion gear bearing (1) onto the drive pinion gear (2).
2. Use the J 8092 and the J 29609 in order to drive the inner bearing race (1) into the rear axle housing, if the inner drive pinion gear bearing was replaced.
3. Install the new drive pinion gear bearing spacer (8) onto the drive pinion gear.
OUTER BEARING INSTALLATION PROCEDURE
^ Tools Required
- J 8092 Driver Handle
- J 7817 Front Pinion Bearing Cup Installer
1. Use the in J 8092 and the J 7817 in order to install the drive pinion gear outer bearing race into the rear axle housing if the pinion gear outer bearing race is removed.
2. Install the drive pinion gear outer bearing into the rear axle housing.
3. Install the differential drive pinion gear seal.
INSTALLATION PROCEDURE
^ Tools Required
- J 23911 Front Pinion Bearing Cup Installer
1. If a new ring gear and a new drive pinion gear will be installed, measure the differential drive pinion gear depth. Pinion Depth - Adjustment
2. Install the drive pinion gear into the rear axle housing.
3. Use the J 23911 in order to install the new drive pinion gear seal.
4. Apply pinion gear seal lubricant or an equivalent to the drive pinion gear yoke and to the sealing lip of the drive pinion gear seal.
5. Install the drive pinion gear yoke.
6. Install the drive pinion gear washer and nut.
Finger tighten the drive pinion gear washer and nut.
7. Perform the following actions in order to tighten the drive pinion gear nut.
^ Hold the drive pinion gear yoke in place.
^ Rotate the drive pinion gear in order to seat the inner and outer drive pinion gear bearings.
^ While rotating the drive pinion gear, tighten the drive pinion gear nut until the end play is taken up.
IMPORTANT: Preload specifications are being approached when the following conditions occur:
^ The holder will no longer pivot freely as the drive pinion gear rotates.
^ No further end play exists
Do not attempt further tightening until after measuring the preload if the above conditions exist.
IMPORTANT: Exceeding the preload specifications will compress the collapsible drive pinion gear bearing spacer too far.
This conditions will require the installation of a new spacer.
8. Set the preload to the following specifications on the inner and outer drive pinion gear bearings:
^ 1.7 - 3.4 Nm (15 - 30 inch lbs.) on new inner and outer drive pinion gear bearings
^ 1.0 - 1.7 Nm (10 - 15 inch lbs.) on used inner and outer drive pinion gear bearings
9. Rotate the drive pinion gear several times.
Ensure that the inner and outer drive pinion gear bearings seat.
10. Carefully tighten the drive pinion gear nut.
11. Continue to gradually tighten the drive pinion gear nut.
Measure the preload after each tightening.
(Additional tightening of the drive pinion gear nut may add additional torque.
12. Measure the preload again.
13. Reset the preload to specifications if the preload decreased by rotating the drive pinion gear.
14. Install the differential case.