Removal Procedure
- Remove the rear axle shafts.
Refer to
Axle Shaft Replacement
.
- On vehicles with standard non-traction control rear axles, remove the sensor plug mounting bolt/screw from the wheel speed sensor.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- On vehicles with standard non-traction control rear axles, remove the wheel speed sensor.
Carefully place the wheel speed sensor along the side of the rear axle housing.
Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
- Remove the differential carrier bearing cap bolts/screws.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
Important: Mark the differential carrier bearing caps R and L. This will ensure that they can be reassembled into their original positions.
Place the following components with the marked right and left differential bearings
caps:
| • | The right and left bearing outer races of the differential (side) bearings |
- Remove the differential bearing shims.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
Notice: Be careful when prying the differential case out of the axle housing
to prevent damage of the cover gasket surface. Support the differential
case during removal to prevent case from falling and being damaged.
Important: Before removing the differential case from the rear axle housing, measure the differential ring gear-to-differential drive pinion gear backlash.
Refer to
Backlash Adjustment
- Remove the differential case from the rear axle housing.
Disassembly Procedure
Tools Required
| • | J 8107-2
Differential Side Bearing Remover Plug |
| • | J 34168 Bearing Separator |
- Use the
J 22888-20A
and the
J 8107-2
in order to remove the differential (side) bearing from the differential case.
- If a
J 22888-20A
will not fit use a J 34168 Bearing Separator to press the bearings off. (If removing an Auburn type limited slip differential case, skip Step 2.
- Remove the following components from the differential case:
| • | The upper and lower pinion gears |
| • | The pinion thrust washer |
| • | The left and right pinion gears |
| • | The differential side gear thrust washers |
| • | Mark the pinion gears and the differential case so the pinion gears may be reinstalled in the original positions. |
| • | Refer to
Rear Axle With Antilock Brake System and Differential Assembly
|
- Remove all of the ring gear bolts/screws from the differential case.
The differential ring gear bolts/screws are the left-hand thread type bolts/screws.
Discard the ring gear bolts/screws.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Use a brass drift and a hammer in order to drive the ring gear from the differential case.
Do not pry between the ring gear, the speed sensor reluctor wheel and the differential case if the ring gear tightly attached.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
Important: Replace the speed sensor reluctor wheel if the speed sensor reluctor wheel is removed from vehicles with standard rear axles.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Use a brass hammer in order to remove the speed sensor reluctor wheel (14).
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Discard the speed sensor reluctor wheel.
Assembly Procedure
Tools Required
| • | J 25299
Differential Side Bearing Installer |
- Lubricate all of the components of the differential before assembly.
Use one of the following lubricants:
| • | SAE 80W-90 GL-5 gear lubricant or an equivalent |
- Clean the connecting surfaces of the ring gear and the differential case.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
Caution: Once the speed sensor reluctor wheel has been removed from the differential
case, a new speed sensor reluctor wheel must be installed. The press fit may
be lost if the speed sensor reluctor wheel is used more than once. This would
allow the speed sensor reluctor wheel to rotate freely on the differential
case causing a significant reduction in performance of the antilock brake
system, which could result in bodily injury.
- On vehicles with a non-traction control rear axle, place the speed sensor reluctor wheel over the differential
case on the ring gear side.
Install the speed sensor reluctor wheel.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- On vehicles with a non-traction control rear axle, position the ring gear over the speed sensor reluctor wheel.
Install the ring gear (2).
- Install two ring gear bolts/screws into opposite sides of the ring gear.
(If converting to an Auburn type limited slip differential case, skip to Step 12.
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the remaining new ring gear bolts/screws.
Finger tighten the new ring gear bolts/screws.
Tighten
Tighten the differential ring gear bolts/screws alternately in progressive stages to 120 N·m (89 lb ft).
- Position the side gear thrust washers over the side gear hubs.
If the original side gear thrust washers are being installed, install the side gear thrust washers in their original positions.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Install the pinion gears into the differential case.
If the original pinion gears are being installed, install the pinion gears in their original positions.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Position one upper or lower pinion gear (without a pinion thrust washer) between the left pinion gear and the right pinion gear.
Rotate the pinion gears until one of the upper or lower pinion gears is opposite the loading opening in the
differential case.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Position the other pinion gear between the left and the right pinion side gears so that the pinion gear shaft holes are aligned.
Rotate the pinion gears until the holes in the upper and the lower pinion gears are aligned with the holes
in the differential case.
- Rotate the upper and the lower pinion gears back toward the loading opening enough to permit sliding in the pinion thrust washers.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
- Use the
J 8092
, the
J 21465-13
and the
J 25299
in order to install the differential bearings (1) to the differential case.
Installation Procedure
Tools Required
J 25588
Side Bearing Shim Installer
- Install the differential case into the rear axle housing.
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
Important:
| • | Do not reinstall the production bearing shims. |
| | The production bearing shims may break when tapped by a hammer. |
| • | Service bearing shims are reusable. |
| • | Ensure that the bearing shim packs remain in each shim pack's proper position (right side or left side). |
- Use the following steps in order to install the differential bearing shims:
| 2.1. | Select the correct left side bearing shim. |
The bearing shim must be 0.10 mm (0.004 in) thicker than the shim that was removed from the left side.
| 2.2. | Insert the left side bearing shim pack between the spacer and the left bearing race. |
| 2.3. | Loosely install the carrier bearing cap. |
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
| 2.4. | Select the correct right side bearing shim. |
The bearing shim must be 0.10 mm (0.004 inch) thicker than the shim that was removed from the right side.
| 2.5. | Insert the bearing shim between the spacer and the right bearing race. |
| 2.6. | Use the
J 25588
in order to drive the right bearing shim into position. |
Notice: Use the correct fastener in the correct location. Replacement fasteners
must be the correct part number for that application. Fasteners requiring
replacement or fasteners requiring the use of thread locking compound or sealant
are identified in the service procedure. Do not use paints, lubricants, or
corrosion inhibitors on fasteners or fastener joint surfaces unless specified.
These coatings affect fastener torque and joint clamping force and may damage
the fastener. Use the correct tightening sequence and specifications when
installing fasteners in order to avoid damage to parts and systems.
- Install the differential bearing cap bolts/screws (5).
Refer to
Rear Axle With Antilock Brake System and Differential Assembly
Tighten
Tighten the differential carrier bearing cap bolts/screws to 75 N·m (55 lb ft).
- Measure the backlash.
Correct the backlash as necessary.
Refer to
Backlash Adjustment
- Install the rear axle shafts.
Refer to
Axle Shaft Replacement
- Install the following components:
| • | Refer to
Rear Axle With Antilock Brake System (Drum Brakes)
|
| • | The wheel speed sensor mounting bolt/screw |
| • | Refer to
Rear Axle With Antilock Brake System and Differential Assembly
|
Tighten
Tighten the wheel speed sensor mounting plug bolt/screw to 10 N·m (89 lb in).
