Axle Differential Assembly-Air Suspension
Removal1. WARNING: Do not remove an air spring under any circumstances when there is pressure in the air spring. Do not remove any components supporting an air spring without either exhausting the air or providing support for the air spring to prevent vehicle damage or personal injury.
WARNING: The electrical power to the air suspension system must be shut off prior to hoisting, jacking or towing an air suspension vehicle. This can be accomplished by turning off the air suspension switch located in the RH kick panel area. Failure to do so can result in unexpected inflation or deflation of the air springs, which can result in shifting of the vehicle during these operations.
Raise and support the vehicle.
2. Remove the rear wheel and tire assembly.
3. Mark the driveshaft flange and rear axle pinion flange for correct alignment during installation.
4. Remove the four driveshaft bolts, and disconnect the driveshaft.
- Wire the driveshaft aside.
5. Disconnect the electrical connector.
6. Disconnect the parking brake rear cable and conduit from the rear wheel disc brake adapter.
- Repeat for the other side.
7. Remove the rear disc brake caliper, and position it out of the way.
- Repeat for the other side.
8. Remove the brake disc.
- Repeat for the other side.
9. Remove the rear stabilizer bar retainer bolts.
- Repeat for the other side.
10. Loosen the rear stabilizer bar links and bushings.
11. Disconnect the air suspension height sensor.
12. WARNING: Use extra straps to secure the rear axle to the jack.
Install a suitable hydraulic jack under the rear axle housing.
13. Remove the rear axle tracking bar assembly retainer bolt, and position the rear axle tracking bar out of the way.
14. Remove the jounce bumper.
- Repeat for the other side.
15. Remove the rear suspension upper front arm and bushing retainer bolt.
- Repeat for the other side.
16. Remove the rear suspension arm retainer bolt, and position the rear suspension arm and bushing out of the way.
- Repeat for the other side.
17. Remove the lower shock absorber retainer bolt.
- Repeat for the other side.
18. Remove the rear axle housing vent hose.
19. CAUTION: Watch for obstructions.
Lower the rear axle on the jack until it is clear of the vehicle.
Installation
1. WARNING: Use extra straps to secure the rear axle to the jack.
Raise the rear axle into place using a suitable hydraulic jack.
2. Position the rear suspension upper front arm and bushing, and install the retainer bolt.
- Repeat for the other side.
3. Position the rear suspension arm and bushing and install the retainer bolt.
- Repeat for the other side.
4. Raise the rear axle with the jack until the rear suspension arm and bushing are parallel to the ground, and install the shock absorber retainer bolts.
- Repeat for the other side.
5. Tighten the rear suspension arm and bushing.
- Repeat for the other side.
6. Tighten the rear suspension upper front arm and bushing retainer bolt.
- Repeat for the other side.
7. Position the rear axle tracking bar in the bracket, install the retainer bolt and tighten it.
8. Connect the rear axle housing vent hose.
9. Install and tighten the rear stabilizer bar retainer bolts.
- Repeat for the other side.
10. Tighten the rear stabilizer bar links and bushings.
11. Tighten the shock absorber retainer bolts.
- Repeat for the other side.
12. Remove the jack.
13. Install the driveshaft, and tighten the retainer capscrews.
14. Partially lower the vehicle.
15. Install the jounce bumper retainer bolts and tighten.
- Repeat for the other side.
16. Connect the parking brake rear cable and conduit.
- Repeat for the other side.
17. Install the brake disc.
- Repeat for the other side.
18. Install the rear disc brake caliper.
- Repeat for the other side.
19. Install the wheels and tires.
20. Connect the air suspension height sensor.
21. Connect the electrical connector.
22. Lower the vehicle.
23. Turn on the air suspension control switch.