REMOVAL & INSTALLATION
See Figures 1, 2 and 3
- Raise and support the front end on jackstands with the tires still touching the ground.
- Using jacks, take up the weight of the axle, off the U-bolts.
- Disconnect the lower end of each shock absorber.
- Disconnect the spring from the front bracket or shackle.
- Disconnect the spring from the rear bracket or shackle.
- Remove the U-bolt nuts.
- Remove the U-bolts.
- Disconnect the jack bracket or stabilizer bar as necessary.
- Lower the axle slightly and remove the spring. Take note of the position of the spring spacer.
- Position the spring on its seat on the axle and raise it to align the front of the spring with the bracket or shackle.
- Coat the bushing with silicone grease.
- Carefully guide the attaching bolt through the bracket or shackle, and the bushing.
Install the nut and, depending on model or which bolts you removed, torque it to:
chassis/cab spring-to-shackle: 120-150 ft. lbs. (163-203 Nm)
In a similar fashion, attach the rear of the spring. The torques are:
chassis/cab spring-to-bracket: 150-210 ft. lbs. (203-285 Nm)
- Position the spacer on the spring.
Install the U-bolts. Install the jack bracket or stabilizer bar bracket on the forward U-bolt. Install the U-bolt nuts. Tighten the nuts, evenly and in gradual increments, in a crisscross fashion, to:
chassis/cab: 150-210 ft. lbs. (203-285 Nm)
Connect the shock absorbers. Tighten them to:
chassis/cab models, shock absorber-to-bracket nuts to 52-74 ft. lbs. (71-100 Nm).