REMOVAL & INSTALLATION
See Figure 1
- Raise and safely support the vehicle with safety stands.
- Support the rear axle with a floor jack.
- Remove the top and bottom shock absorber bolts.
- Remove the shock absorbers.
- Place the new shock in position and install the mounting bolts. For 1993-95, tighten to 80 ft. lbs. (108 Nm) for the lower bolts and 85 ft. lbs (115 Nm) for the upper bolts. For 1996-97, torque the shock absorber mounting bolts to 75 ft. lbs. (101 Nm).
- Remove the floor jack supporting the rear axle and lower the vehicle to the ground.
See Figure 2
The purpose of the shock absorber is simply to limit the motion of the spring during compression and rebound cycles. If the vehicle is not equipped with these motion dampers, the up and down motion would multiply until the vehicle was alternately trying to leap off the ground and to pound itself into the pavement.
Contrary to popular rumor, the shocks do not affect the ride height of the vehicle. This is controlled by other suspension components such as springs and tires. Worn shock absorbers can affect handling; if the front of the vehicle is rising or falling excessively, the footprint of the tires changes on the pavement and steering is affected.
The simplest test of the shock absorber is simply push down on one corner of the unladen vehicle and release it. Observe the motion of the body as it is released. In most cases, it will come up beyond it original rest position, dip back below it and settle quickly to rest. This shows that the damper is controlling the spring action. Any tendency to excessive pitch (up-and-down) motion or failure to return to rest within 2-3 cycles is a sign of poor function within the shock absorber. Oil-filled shocks may have a light film of oil around the seal, resulting from normal breathing and air exchange. This should NOT be taken as a sign of failure, but any sign of thick or running oil definitely indicates failure. Gas filled shocks may also show some film at the shaft; if the gas has leaked out, the shock will have almost no resistance to motion.
While each shock absorber can be replaced individually, it is recommended that they be changed as a pair (both front or both rear) to maintain equal response on both sides of the vehicle. Chances are quite good that if one has failed, its mate is weak also.