Removal Procedure
- Set the parking brake.
 
- Block the vehicle rear wheels.
 
- Raise the frame until the front tires clear the floor.
 
- Support the axle with a jack. Raise the axle high enough in order to allow the spring to clear the brackets when you remove the spring.
 
Notice: Do not use the front crossmember to support the vehicle or the crossmember
may buckle.
- Support the frame using suitable safety stands.
 
- Remove the following components from the lower mounting brackets (7):
 
- Remove the shock absorbers (5) from the lower mounting brackets (7). Push the shock absorbers into the fully retracted position.
 
- Remove the insulators (13) and the washers (6) from the shock absorber lower stem.
 
- Remove the nuts from the front and rear eye bolts. Loosen the upper rear shackle bolt so that the hanger can pivot.
 
- Remove the nuts (6) and the U-bolts (1). Lower the axle and the tie rod (5) far enough to relieve the tension on the spring (2).
 
- Remove the front eye bolt.
 
- Remove the rear eye bolt.
 
- Remove the following components from the vehicle:
 
Installation Procedure
- Install the spring (2).
 
- Install the rear eye bolt and nut.
 
| 2.1.  | Raise the axle and the tie rod (5) in order to support the spring (2). | 
 
| 2.2.  | Align the spring center bolt to the axle. | 
 
- Install the front eye bolt and nut.
 
Notice: Refer to Fastener Notice in the Preface section.
Important: Always install NEW U-bolts when loosened or removed.
- Install the U-bolts (1) and the nuts (6).
 
Tighten
|     •  | For 8,100 pound axles, tighten the U-bolt nut to 330 N·m (243 lb ft). | 
 
|     •  | Tighten the eye bolts to 330 N·m (243 lb ft). | 
 
- Install the flat washer (6) and the insulator (13) onto the shock absorber lower stem.
 
- Install the shock absorber (5) into the lower mounting bracket (7).
 
- Install the following components:
 
Tighten
Tighten the lower shock absorber nut to 85 N·m (63 lb ft).
- Remove the safety stands and lower the vehicle.