Leaf Spring Replacement Single Axle

1. Set the parking brake.
2. Block the front wheels.
3. Raise and support the vehicle using a suitable lifting device in order to remove the weight from the spring assembly.
4. Place the jack stands under the rear axle in order to support the axle weight.
5. Remove the rear wheel assembly, if necessary.
6. Remove the following rear spring hanger components:

•	The stop nut

•	The washer

•	The stop bolt

7. Remove the following components:

•	The shock absorber nut

•	The washer

•	The insulator

•

The shock

•	The washer (if equipped)

8. Remove the U-bolt nuts and the washers.
9. Remove the following components:

•	The U-bolt anchor plate

•

The seat

•	The shock absorber bracket (if equipped)

10. Remove the U-bolts.
11. Raise the vehicle slightly.
12. Remove the following components:

•	The eye bolt nut

•	The washer

•	The eye bolt

13. Raise and support the frame using a suitable lifting device in order to provide clearance between the spring assembly and the hanger bracket.
14. Remove the spring assembly using a suitable hoist.
15. Remove the following components:

•	The auxiliary spring

•

The bolt

•	The spacers

•	The U-bolt spacers (if equipped)

1. Install the following components:

•	The auxiliary spring

•	The U-bolt spacers (if equipped)

•	The spacers

•	The bolt (if removed)

2. Install the spring assembly onto the axle pad or the axle stabilizer/spring seat (if equipped), using a suitable hoist.
3. Install the U-bolt spacer over the center bolt.
4. Install the U-bolts into the spacer grooves.



5. Install the U-bolt anchor plate (1) and the seat.
6. Install the shock absorber bracket or the stabilizer shaft/spring seat, if equipped.

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.

Important: In order to properly tighten the U-bolt nuts, torque them progressively as described in the next two steps.

7. For a 20 mm (0.787 in) U-bolt, install the U-bolt nuts (2) and the washers.

Tighten

1. Tighten the U-bolt nut to 100 N·m (74 lb ft) in sequence.
2. Tighten the U-bolt nut to 250 N·m (184 lb ft) in sequence.
3. Tighten the U-bolt nut to 375-400 N·m (276-295 lb ft) in sequence.
8. For a 22 mm (0.866 in) U-bolt, install the U-bolt nuts (2) and the washers.

Tighten

1. Tighten the U-bolt nut to 150 N·m (111 lb ft) in sequence.
2. Tighten the U-bolt nut to 275 N·m (203 lb ft) in sequence.
3. Tighten the U-bolt nut to 425-450 N·m (313-332 lb ft) in sequence.



9. Install the following components:

•	The spring front eye nut

•	The washer

•	The spring front eye bolt

Tighten
Tighten the spring front eye bolt to 415 N·m (305 lb ft).

10. Install the following components:

•	The shock absorber washer

•

The shock

•	The insulator

•	The washer

•

The nut

Tighten
Tighten the lower shock absorber nut to 61 N·m (45 lb ft).

11. Lower the frame until the hangers touch the surface of the spring eye.
12. For tapered leaf springs, install the following components:

•	The washer

•

The nut

•	The rear spring hanger stop bolt

Tighten
Tighten the rear spring hanger stop bolt to 415 N·m (305 lb ft).

13. For multileaf springs, install the rear spring hanger bolt.

Tighten
Tighten the rear spring hanger bolt. Ensure that a minimum of 84.07 mm (3.36 in) is between the ears of the rear spring hanger.

14. Raise the vehicle.
15. Remove the jack stands.
16. Lower the vehicle.
17. Remove the blocks from the front wheels.