Leaf Spring Replacement
Leaf Spring ReplacementRemoval 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. Disconnect the Real Time Damping (RTD) sensors, 25 series utilities if equipped.
4. Remove the trailer hitch, if equipped.
5. Remove the fuel tank for left side applications.
6. Remove the U-bolt nuts.
7. Remove the U-bolts.
8. Remove the spring spacer.
9. Remove the anchor plate.
10. Remove the rear spring bracket nut and bolt.
11. Remove the front spring bracket nut and bolt.
12. Remove the leaf spring assembly from the vehicle.
Installation Procedure
1. Install the leaf spring assembly to the vehicle.
2. Loosely assemble the spring to the front hanger bracket.
3. Install the front spring hanger bracket bolt.
4. Install the front spring hanger bracket nut.
5. Install the rear spring hanger bracket bolt.
6. Install the rear spring hanger bracket nut.
Important: Do not reuse the U-bolts.
7. Install the spring spacer.
8. Install the U-bolts.
9. Install the anchor plate.
Notice: Refer to Fastener Notice in Service Precautions.
10. Install the U-bolt nuts.
^ For 25 series except 8.1 L engine tighten the U-bolt nuts to 72 Nm (53 ft. lbs.).
^ For all 25 series with the 8.1 liter engine 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.).
11. Install the fuel tank for left side applications.
12. Install the trailer hitch, if equipped.
13. Connect the RTD sensors, 25 series utilities if equipped.
14. Remove the rear axle support.
15. Remove the safety stands.
16. Lower the vehicle.