GM Corvette 1963-1982 Repair Guide

Upper and Lower Control Arms

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REMOVAL & INSTALLATION Control Arm Shaft



See Figures 1 and 2

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Fig. Fig. 1: Lower control arm shaft removal



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Fig. Fig. 2: Removing the upper control arm shaft

  1. Remove the front coil spring as previously described.
  2.  
  3. Count the shims at each end of the cross-shaft, then unbolt it from the frame and remove the control arm.
  4.  
  5. Remove the bolts, washers, and collars from both ends of the shaft, then screw in a 7 / 16 in. X 20 capscrew into one end of the shaft.
  6.  
  7. Support the control arm in a press and press on the capscrew until the bushing is forced from the arm.
  8.  
  9. Unscrew the capscrew and repeat the procedure on the other end on the cross-shaft.
  10.  
  11. Position the replacement cross-shaft and/or bushings in the control arm and start the bushings into the arm.
  12.  
  13. Place the assembly in a press, put a spacer over the bushing, and press into place.
  14.  
  15. Repeat the procedure for the other end, then install the collar and lockwasher but loosely thread in the bolts.
  16.  
  17. Reverse the removal procedure to install the spring and lower control arm. After the arm is installed, lower the vehicle to the floor and tighten the cross-shaft bushing bolts to 45-55 ft. lbs.
  18.  
  19. The procedure for replacing the upper control arm shaft is the same as for the lower control arm shaft, except a 3 / 8 in. X 24 capscrew is used to remove the bushings. Torque the bushing bolts to 35-40 ft. lbs.
  20.  

Control Arm

The upper and lower control arms are removed by combining the operations for replacing the upper and lower cross-shafts and the operations for replacing the steering knuckle.

 
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