Chrysler Full-Size Trucks 1967-1988 Repair Guide

Shock Absorber

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REMOVAL & INSTALLATION



Coil Spring Suspension
  1. Loosen the wheel lug nuts.
  2.  
  3. Raise and safely support the vehicle with jackstands positioned at the extreme front ends of the frame rails.
  4.  
  5. Remove the wheel.
  6.  

It is advisable to spray the bolts and nuts which mount the shock with penetrating oil, then allow them to sit for a few minutes.

  1. Remove the upper nut and retainer.
  2.  
  3. Remove the two lower mounting bolts.
  4.  
  5. Remove the shock absorber.
  6.  

To install:
  1. Replace the shock absorber with washers on the upper and lower bolts. Make sure the upper bushings are in the correct position, and replace any worn or cracked bushing.
  2.  
  3. Install the nuts.
  4.  
  5. Tighten the upper nut to 25 ft. lbs. (33 Nm). Then, tighten the lower bolts to 15 ft. lbs. (20 Nm).
  6.  

Leaf Spring Suspension

See Figures 1 through 9

On most of the late model trucks covered by this information, the shock absorber upper end is fastened to a removable bracket. Because this bracket may be easily damaged, it should be inspected whenever the shocks are removed. If necessary, this bracket is easily removed with the shock absorber for replacement.

  1. Although not always necessary, removing the wheel will provide easier access to the shock. If this is desired, loosen the lug nuts before raising the vehicle.
  2.  
  3. Raise and safely support the truck.
  4.  
  5. If necessary, remove the wheel for access.
  6.  



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Fig. Fig. 1: 1967-71 D100/200 and W100/200 rear shocks and springs



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Fig. Fig. 2: 1967-71 D300 and W300 rear shocks and springs



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Fig. Fig. 3: Although not always necessary, removing the wheel makes access to the shock easier

It is advisable to spray the bolts and nuts which mount the shock with penetrating oil, then allow them to sit for a few minutes.



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Fig. Fig. 4: The jounce bumper found on late model shock brackets may be easily replaced without removing the shock



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Fig. Fig. 5: Always spray fasteners with penetrating oil before you start a job-This will make the job much easier

  1. For late model vehicles on which the bracket is to be removed, loosen BUT DO NOT REMOVE, the bracket retainers at this time.
  2.  
  3. Remove the mounting nut and washer from the top of the shock.
  4.  
  5. Remove the lower nut, stud and washers from the bottom of the shock.
  6.  
  7. Remove the shock absorber from the vehicle.
  8.  
  9. If necessary on late model trucks, remove the fasteners which were loosened earlier and remove the shock upper mounting bracket from the truck.
  10.  



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Fig. Fig. 6: If you are removing the upper bracket (on late model trucks), loosen the retainers before shock removal



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Fig. Fig. 7: Loosen the nut using a ratchet ...



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Fig. Fig. 8: ... remove the nut and washer ...



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Fig. Fig. 9: ... then remove the shock absorber

To install:
  1. Inspect the jounce bumper for wear or damage and replace, if necessary.
  2.  
  3. Replace any worn or cracked bushings, these should be supplied with the new shock absorber.
  4.  
  5. If removed on late model trucks, install the upper mounting bracket to the vehicle and tighten the retainers.
  6.  
  7. Position the shock absorber on the vehicle, then install the washers and nuts. Tighten the nuts to 50 ft. lbs. (67 Nm).
  8.  

To help prevent possible damage to shock absorber bushings, always hold a movable stud (using a wrench on the rear nut or a flat on the stud itself) when tightening shock retainer.

  1. If removed, install the wheel.
  2.  
  3. Remove the jackstands and carefully lower the vehicle.
  4.  

TESTING



See Figure 10

  1. Remove the shock absorber from the truck.
  2.  
  3. To remove entrapped air from the cylinder, do the following:
    1. Hold the shock upright and open to its full extension.
    2.  
    3. Invert the shock and slowly collapse until the piston bottoms.
    4.  
    5. Repeat steps a and b several times.
    6.  

  4.  
  5. Clamp the lower end of the shock in a vise in the upright position.
  6.  
  7. Open and close the shock several times.
  8.  
  9. A good shock will have an even, steady resistance in both directions.
  10.  
  11. If you have little or no resistance in your shocks, replace them.
  12.  



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Fig. Fig. 10: Examining your shocks to see if they are good

 
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