Liberty, Wrangler 2006-2007

Shock Absorbers

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Removal & Installation



  1. Raise and support the vehicle and the axle.
  2.  
  3. Remove the upper mounting bolts .
  4.  
  5. Remove the lower nut and bolt from the axle bracket. Remove the shock absorber

    Click image to see an enlarged view

    Fig. Shock absorber assembly for the Wrangler

  6.  

To install:

  1. Install the shock absorber on the upper frame rail and install mounting bolts.
  2.  
  3. Tighten the upper bolts to 23 ft. lbs. (31 Nm).
  4.  
  5. Install lower bolt and nut finger tight.
  6.  
  7. Remove the supports and lower the vehicle.
  8.  
  9. Tighten the lower nut to 74 ft. lbs. (100 Nm)
  10.  

  1. Raise and support the vehicle. Position a hydraulic jack under the axle to support the axle.
    CAUTION
    Do not allow the axle to hang from the upper suspension arm ball joint.

  2.  
  3. Remove the upper nut and bolt from the frame bracket .
  4.  
  5. Remove the lower nut and bolt from the axle bracket. Remove the shock absorber.

    Click image to see an enlarged view

    Fig. Rear shock absorber assembly for the Liberty

  6.  

To install:

  1. Install the shock absorber in the frame bracket and install the bolt and nut .
  2.  
  3. Install the shock absorber in the axle bracket and install the bolt and nut .
  4.  
  5. Remove the supports and lower the vehicle.
  6.  
  7. Tighten the upper mounting nuts to 80 ft. lbs. (108 Nm). Tighten the lower mounting nuts to 85 ft. lbs. (115 Nm).
  8.  

Testing & Inspection



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.

Click image to see an enlarged view

Fig. When fluid is seeping out of the shock absorber, it-s time to replace the shock

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.

 
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