Leaf Spring

REMOVAL
1. Raise vehicle on frame contact hoist to a comfortable working position.
2. Support axle with a jack stand. Pad should just contact axle.






3. Begin removal of the shock absorber lower mounting bolt.

NOTE: If shock absorber bolt deflects upward during removal, raise axle by adjusting support jack. If shock absorber bolt deflects downward during removal, lower axle by adjusting support jack (or by pulling on axle).

4. Using 2 jack stands positioned under the outer ends of the axle, raise the axle enough to remove the weight of the axle from the rear springs.






5. Loosen and remove the axle plate bolts from the rear axle.






6. Remove the axle plate from the rear axle and the leaf spring.
7. Using the jack stands slowly lower the rear axle, permitting the rear springs to hang free.






8. Loosen and remove the 4 bolts from the front mount of the leaf spring.






9. Loosen and remove the nuts from the spring hanger for the rear leaf spring. Then remove the hanger plate from the hanger and remove the spring from the spring hanger.






10. Remove the leaf spring from the vehicle.






11. Loosen and remove the pivot bolt from the front mount of the rear leaf spring..

FRONT BUSHING REPLACEMENT
1. Install leaf spring in a proper holding fixture.
2. Install leaf spring press Special Tool C-4212-F.
3. Install adapter Special Tool C-4212-3.
4. Tighten leaf spring press until bushing is extracted from leaf spring.
5. Remove leaf spring press from leaf spring.
6. Insert replacement bushing into the leaf spring eye. Verify that the bushing flange is on the left side of the leaf spring when leaf spring is in the in vehicle installed position.
7. Install leaf spring press Special Tool C-4212-F.
8. Install adapter Special Tool C-4212-4.
9. Tighten leaf spring press until bushing flange bottoms solidly against leaf spring eye.
10. Remove leaf spring press and adapter.
11. Bend the bushing tabs so that they are contacting the leaf spring.

INSTALLATION
1. Assemble front spring mount to front of spring eye and install pivot bolt and nut. Do not tighten.

CAUTION: Pivot bolt must face inboard to prevent structural damage during installation of spring.

2. Raise front of spring and install four hanger bolts, tighten to 61 Nm (45 ft. lbs.) torque.
3. Install rear of spring onto rear spring shackle. Install shackle plate. Do not tighten.
4. Verify lower leaf spring isolator is in position.






5. Raise axle into correct position on leaf spring with axle centered under spring locator post.
6. Verify that the leaf spring isolator is correctly positioned in the axle plate.
7. Install axle plate on the spring.
8. Install axle plate bolts. Tighten bolts to 101 Nm (75 ft. lbs.) torque.
9. Install shock absorber bolts. Do not tighten.
10. Lower vehicle to floor so that the full curb weight of vehicle is supported by the tires.
11. Tighten component fasteners as follows:
- Front pivot bolt-156 Nm (115 ft. lbs.)
- Shackle nuts-61 Nm (45 ft. lbs.)
- Shock absorber bolts-101 Nm (75 ft. lbs.)

12. If the vehicle is not equipped with antilock brakes, raise vehicle and the connect the actuator for the height sensing proportioning valve on the rear leaf spring. Adjust the height sensing proportioning valve.