Leaf Spring Replacement (Cutaway/Upfitter)

Leaf Spring Replacement (Cutaway/Upfitter)

Removal Procedure

Caution: Refer to Vehicle Lifting Caution in Service Precautions.

1. Raise the vehicle on a hoist.
2. Support the rear axle in order to relieve the tension from the rear springs, using a suitable jack stand.





3. Remove the tire and wheel assembly.
4. Remove the following parts from the axle:
^ The rear spring U-bolts
^ The anchor plate (2)

5. Lower the jack stand slightly in order to remove the axle from the rear spring.
6. Lower the axle in order to remove the locator pin on the rear spring from the axle.





7. Remove the rear of the rear spring from the rear of the rear spring shackle.
8. Remove the rear spring from the front frame hanger.
9. Remove the nut and the bolt that retain the rear shackle to the rear spring.
10. Remove the rear spring from the vehicle.
11. Insert the spring into a suitable holding fixture.
12. Remove the rear shackle.

Installation Procedure
1. Install the rear shackle to the rear spring.
2. Install the nut and the bolt to the shackle.
3. Install the rear spring to the vehicle.

Important: Use a new bolt and a new nut each time the service is performed.

Notice: Refer to Fastener Notice in Service Precautions.





4. Install the rear spring to the front frame hanger.
Tighten the rear spring to the front hanger nut to 110 Nm (80 ft. lbs. + a 200 degree turn).

Important: Use a new bolt and a new nut each time the service is performed.

5. Install the rear spring shackle to the rear frame hanger.
Tighten the rear shackle to the rear frame hanger and the rear spring to 90 Nm (67 ft. lbs.).

Important: Tighten the outer U-bolt nuts and then tighten the inner U-bolt nuts (1) to 25 Nm (18 ft. lbs.). Then tighten the U-bolt nuts (1) in a cross pattern sequence as shown.





6. Install the following parts that are connected to the axle:
^ The rear spring U-bolts
- For vehicles below 7300 GVW, tighten the U-bolt nuts to 95 Nm (70 ft. lbs.).
- For vehicles above 7300 GVW, tighten the U-bolt nuts to 150 Nm (115 ft. lbs.).
^ The anchor plates

7. Install the tire and wheel.
8. Remove the axle support. Lower the vehicle.