Rear Suspension

Leaf Spring Replacement

Removal Procedure
1. Raise and support the vehicle. Refer to Vehicle Lifting.
2. Support the rear axle independently in order to relieve the tension on the leaf springs.
3. Remove the trailer hitch if equipped. Refer to Trailer Hitch Replacement in Frame and Underbody.
4. Remove the fuel tank for left side applications.





5. Remove the U-bolt nuts.
6. Remove the U-bolts.
7. Remove the spring spacer.
8. Remove the anchor plate.





9. Remove the rear spring hanger bracket nut and bolt.





10. Remove the front spring bracket bolt.
11. Remove the leaf spring assembly from the vehicle.

Installation Procedure





1. Install the leaf spring assembly to the vehicle.
2. Install the front spring hanger bracket bolt.
3. Install the front spring hanger bracket nut.





4. Install the rear spring hanger bracket bolt.
5. Install the rear spring hanger bracket nut.





6. Install the spring spacer.

Important:
Do not reuse the U-bolts.

7. Install the U-bolts.
8. Install the anchor plate.

9. Install the U-bolt nuts.
^ For 15 series without rear wheel steering tighten the U-bolt nuts to 72 Nm (53 ft. lbs.).
^ For all 15 series with rear wheel steering and 15HD/25/35/36 series tighten the U-bolts to 150 Nm (110 ft. lbs.)
^ Tighten the front hanger bracket nut to 150 Nm (110 ft. lbs.).
^ Tighten the rear hanger bracket nut to 95 Nm (70 ft. lbs.).

Notice:
Refer to Fastener Notice in Service Precautions.

10. Install the fuel tank for left side applications.
11. Install the trailer hitch, if equipped. Refer to Trailer Hitch Replacement in Frame and Underbody.
12. Remove the rear axle support.
13. Lower the vehicle.