Leaf Spring Replacement (Passenger/Cargo)

REMOVAL PROCEDURE
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
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.
4. Install the rear spring to the front frame hanger. Use a new bolt and a new nut each time the service is performed.

Tighten
Tighten the rear spring to the front hanger nut to 110 Nm + 200° turn (80 ft. lbs.).

NOTICE: Always use the correct fastener in the proper location. When you replace a fastener, use ONLY the exact part number for that application. The manufacturer will call out those fasteners that require a replacement after removal. The manufacturer will also call out the fasteners that require thread lockers or thread sealant. UNLESS OTHERWISE SPECIFIED, do not use supplemental coatings (paints, greases, or other corrosion inhibitors) on threaded fasteners or fastener joint interfaces. Generally, such coatings adversely affect the fastener torque and joint clamping force, and may damage the fastener. When you install fasteners, use the correct tightening sequence and specifications. Following these instructions can help you avoid damage to parts and systems.

5. Install the rear spring shackle to the rear frame hanger. Use a new bolt and a new nut each time the service is performed.

Tighten
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 to 25 Nm (18 ft. lbs.). Then tighten the U-Bolt nuts in a cross pattern sequence as shown (1, 2, 3, 4).

6. Install the following parts that are connected to the axle:
^ The rear spring U-bolts

Tighten
^ 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.