Removal Procedure
Tools Required
J 22536 Pinion Driver
- Remove the differential case.
Refer to
Differential Case Assembly
- Measure the differential
drive pinion gear inner and outer bearing preload.
- 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 |
| • | Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
|
- 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:
| • | Refer to
Rear Axle With Antilock Brake System and Differential Assembly
|
| • | Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
|
- Remove the differential drive pinion gear yoke (1).
Refer to
Pinion Oil Seal Replacement
- Install the J 22536
- 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
- Remove the differential drive pinion gear seal from the rear axle
housing.
Refer to
Pinion Oil Seal Replacement
- Remove the drive pinion gear outer bearing from the rear axle
housing (10).
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- 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.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
Inner Bearing Removal Procedure
Tools Required
J 22912-O1 Rear Pinion
Bearing Cone Remover
- Remove the drive pinion gear bearing spacer from the drive pinion
gear.
Discard the drive pinion gear bearing spacer.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- 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.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Use the J 22912-O1
in order to drive the inner drive
pinion gear bearing from the drive pinion gear.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
Inner Bearing Installation Procedure
Tools Required
| • | J 29609 Rear
Pinion Bearing Cup Installer |
| • | J 5590 Rear
Pinion Bearing Cone Installer |
- Use the J 5590
in order to install the inner drive
pinion gear bearing (1) onto the drive pinion gear (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.
- Install the new drive pinion gear bearing spacer (8) onto the
drive pinion gear.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
Outer Bearing Installation Procedure
Tools Required
| • | J 7817 Front
Pinion Bearing Cup Installer |
- 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.
(Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Install the drive pinion gear outer bearing into the rear axle
housing..
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Install the differential drive pinion gear seal.
Refer to
Pinion Oil Seal Replacement
Installation Procedure
Tools Required
J 23911 Front Pinion Bearing
Cup Installer
- If a new ring gear and a new drive pinion gear will be installed,
measure the differential drive pinion gear depth.
(Refer to
Pinion Depth Adjustment
.)
- Install the drive pinion gear into the rear axle housing.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Use the J 23911
in order to install the new drive pinion
gear seal.
- Apply pinion gear seal lubricant or an equivalent to the drive
pinion gear yoke and to the sealing lip of the drive pinon gear
seal.
- Install the drive pinion gear yoke.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Install the drive pinion gear washer and nut.
Finger tighten the drive pinion gear washer and nut.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- 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. |
| • | Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
|
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. Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
This conditions will require the installation of a new spacer.
- Set the preload to the following specifications on the inner and outer
drive pinion gear bearings:
(Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
| • | 1.7-3.4 N·m (15-30 lb in)
on new inner and outer drive pinion gear bearings |
| • | 1.0-1.7 N·m (10-15 lb in)
on used inner and outer drive pinion gear bearings |
- Rotate the drive pinion gear several times.
Ensure that the inner and outer drive pinion gear bearings seat.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Carefully tighten the drive pinion gear nut.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- 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.
- Measure the preload again.
- Reset the preload to specifications if the preload decreased by
rotating the drive pinion gear.
- Install the differential case.
Refer to
Differential Case Assembly
