Removal Procedure
- Raise the vehicle. Refer to
Lifting and Jacking the Vehicle
in General Information.
- Drain the differential carrier assembly. Refer to
Lubricant Change
.
- Disconnect the electrical connector from the electric motor actuator.
- Disconnect the wire harness from the inner axle shaft
housing.
- Remove the stabilizer shaft link assembly.
- Remove the wheel drive shaft inboard flange bolts from
the inner axle shaft.
Disconnect the wheel drive shaft from the inner
axle shaft.
- Remove the inner axle shaft housing nuts from the bracket.
- Remove the inner axle shaft housing bolts from the
differential carrier case.
Important: Keep the open end of the inner axle shaft
housing up.
- Carefully remove the inner axle shaft housing from the differential carrier
assembly.
- For the 8.25 inch axle, remove the following
components from the inner axle shaft housing:
10.1. | The clutch fork inner spring (10) |
10.2. | The clutch fork shaft assembly components (14, 13, 12, 11) |
10.3. | The clutch shaft shim (9) |
10.4. | Remove the clutch sleeve (8) |
10.5. | Remove the clutch gear 6) by doing the following: |
10.5.1. | Clamp the inner axle shaft housing (4) in a vise. |
Clamp only on the mounting flange.
10.5.2. | Strike the inside surface of the shaft (1) flange with a hammer and a
brass drift in order to dislodge the front drive axle clutch gear 6) from
the inner axle shaft (1). |
10.6. | Remove the thrust washer 5). |
- For the 9.25 inch axle, remove the following
components from the inner axle shaft housing:
11.1. | The clutch fork inner spring (10) |
11.2. | The clutch fork assembly components (14, 13, 12, 11) |
11.3. | The clutch shaft shim (9) |
11.4. | The clutch sleeve (8) |
11.5. | The retainer ring (7) |
11.6. | The thrust washers (5, 6) |
- Remove the inner axle shaft (2). Tap out the
inner axle shaft with a soft-faced mallet.
- Remove the inner axle seal and the bearing from the axle housing. Refer
to
Front Drive Axle Inner Shaft Seal and Inner Shaft Bearing Replacement
.
Installation Procedure
- Install the new inner axle shaft bearing and the seal to the axle housing.
Refer to
Front Drive Axle Inner Shaft Seal and Inner Shaft Bearing Replacement
.
- Install the inner axle shaft (2) into the inner axle
shaft housing (1).
Carefully tap the inner axle shaft into place with
a soft-faced mallet.
- For the 8.25 inch axle, install the following
components into the inner axle shaft housing:
3.1. | The thrust washer (5). Use chassis grease in order to hold the
thrust washer in place. |
Ensure the tabs on the thrust washer (5)
align with the slot in the inner axle shaft housing (4).
3.2. | The retainer ring (7) into the clutch gear (6). |
3.3. | The clutch gear (6) onto the inner axle shaft (1). |
Drive the clutch gear into place with a plastic hammer.
3.4. | Determine the clutch gear shim thickness. |
3.5. | The clutch gear shim (9) |
3.6. | The clutch sleeve (8) |
3.7. | The clutch fork assembly (14, 13, 12, 11) |
3.8. | The clutch fork inner spring (10) into the differential carrier
case. |
- For the 9.25 inch axle, install the following
components into the inner axle shaft housing:
4.1. | The thrust washer (5). Use chassis grease in order to hold the
thrust washer in place. |
Ensure the tabs on the thrust washer (5)
align with the slot in the inner axle shaft housing (4).
4.2. | The second thrust washer (6) |
4.3. | The retainer ring (7) onto the inner axle shaft (1) |
4.4. | Determine the clutch gear shim thickness. |
4.5. | The clutch gear shim (9) |
4.6. | The clutch sleeve (8) |
4.7. | The clutch fork assembly (14, 13, 12, 11) |
4.8. | The clutch fork inner spring (10) into the differential carrier
case. |
- Apply sealant (GM P/N 1052942 or equivalent) to the
inner axle housing to differential carrier sealing surface.
- Install the inner axle shaft housing to the differential
carrier assembly.
Notice: Refer to Fastener Notice in the Preface section.
- Install the inner axle shaft housing bolts.
Tighten
Tighten the inner axle shaft housing bolts to 40 N·m
(30 lb ft).
- Install the inner axle shaft housing washers and nuts
to the bracket.
Tighten
Tighten the inner axle shaft housing nuts to 100 N·m
(75 lb ft).
- Connect the wheel drive shaft inboard flange to the inner axle shaft.
- Install the wheel drive shaft inboard flange to the
inner axle shaft bolts.
Tighten
Tighten the wheel drive shaft inboard flange to
inner axle shaft bolts to 79 N·m (58 lb ft).
- Install the stabilizer shaft link assembly.
- Connect the wire harness to the inner axle shaft housing.
- Connect the electrical connector to the front axle
actuator.
- Fill the differential carrier assembly with axle lubricant. Use the proper
fluid. Refer to
Lubricant Change
.
- Lower the vehicle.