Chevrolet Full-size Cars 1968-1978 Repair Guide

Upper Control Arm

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REMOVAL & INSTALLATION





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Fig. Fig. 1 Exploded view of the upper control arm and related components



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Fig. Fig. 2 Upper control arm installation

  1. Raise the vehicle and support it safely.
  2.  
  3. Support the outer end of the lower control arm with a floor jack.
  4.  
  5. Remove the tire and wheel assembly.
  6.  
  7. Separate the upper ball joint from the steering knuckle as described above under Upper Ball Joint Replacement.
  8.  
  9. Remove the control arm shaft-to-frame nuts. Remove the bolts which attach the control arm shaft to the frame and remove the control arm. Note the positions of the bolts.
  10.  

Tape the shims together and identify them so that they can be installed in the positions from which they were removed.

  1. Install in reverse order of removal.
  2.  
  3. Make sure that the shaft-to-frame bolts are installed in the same position they were in before removal and that the shims are in their original positions.
  4.  
  5. Use free running nuts (not locknuts) to pull serrated bolts through the frame. Then install the locknuts. Tighten the thinner shim pack first.
  6.  
  7. After the vehicle has been lowered to the ground, bounce the front end to center the bushings and then tighten the bushing collar bolts to 45 ft. lbs.
  8.  
  9. Tighten the shaft-to-frame bolts to 80 ft. lbs. on 1968-73 vehicles and 90 ft. lb. on 1974-78 vehicles.
  10.  

 
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