Installation

INSTALLATION






NOTE:
All suspension torques should be made with the full vehicle weight on the ground being supported by the tires.

1. Position the spring (3) and isolator (2) on the axle and align into the spring upper pocket.

2. Carefully raise the rear axle into place.





3. Position both the lower control arms (4) into the rear axle brackets and loosely install the new bolts (2) with new nuts.

4. Position both the upper control arms (3) into the rear axle brackets and loosely install the new bolts (1) with new nuts.





5. Position the rear track bar (2) to the rear axle bracket and loosely install the bolt (1).





6. Position both the rear shock absorbers (2) to the axle brackets and loosely install the rear shock absorber bolts (1).





7. Remove the axle lift.

NOTE:
The stabilizer bar must be centered with equal spacing on both sides.

8. Position the stabilizer bar (2) to the rear axle and install and tighten the bolts (1) to 65 Nm (48 ft. lbs.).





9. Position the park brake cable back to the rear axle.

10. Install the park brake cable bolt (1) on the upper control arm bracket and tighten to 22 Nm (16 ft. lbs.).





11. Install the upper park brake cable bolt (1) to the rear axle (2) and tighten to 22 Nm (16 ft. lbs.).





12. Install the rear cable (3) into the tensioner rods behind the rear of the brake assemblies.

13. Pull the park brake cable springs (1) back until the cable end fitting tabs lock into place.

NOTE:
Pull on the cable to ensure that it is locked into place.






14. Install the rear driveshaft. .

15. Connect the axle vent hose (1) and clamp (2) to the axle (3).





16. Position the calipers (2) back onto the brake rotors and install and tighten the adapter plate bolts (1) to 135 Nm (100 ft.lbs).





17. Position the rear wheel speed sensors (2) to the brake caliper adapters.

18. Install the mounting bolts (1) to the wheel speed sensor (4) and tighten to 24 Nm (18 ft.lbs).

19. Connect the rear wheel speed sensor electrical connectors (3).

20. Install the rear wheels. .

21. Lower the vehicle.

22. If equipped with air suspension, with a scan tool, using the routines under Air Suspension Control Module (ASCM), performed the following:
- Command the vehicle to normal ride height.

- Run the Air Mass Calculation routine on the air suspension system.

- If necessary, add to the system or deflate to atmosphere using the ASCM routines, then repeat the Air Mass Calculation routine again until the system responds with Air Mass OK (188-216 bar-liters) 2726-3132 psi.

- Enable the air suspension system.





23. Tighten the upper (1) and lower control arm (2) to 300 Nm (221 ft.lbs.).





24. Tighten the track bar mounting bolt to 155 Nm (114.5 ft. lbs.).





25. Tighten shock bolt (1) to 136 Nm (100.5 ft. lbs.).