GM Cadillac 1967-1989 Repair Guide

Upper Ball Joints

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REMOVAL & INSTALLATION



See Figures 1, 2, 3 and 4

1976-79 Seville and 1977-86 Full Size Models

On models other than those listed above it is suggested that the entire upper control arm be replaced as an assembly.

  1. Raise the vehicle and support securely. Support the lower control arm securely. Remove the tire and wheel.
  2.  
  3. Remove the upper ball stud cotter pin and loosen the ball stud nut just one turn.
  4.  
  5. Procure a special tool designed to press out ball joints. These tools are available at most automotive parts stores. Locate the tool between the upper and lower ball joints, then press the joints out of the steering knuckle. Remove the tool.
  6.  
  7. Remove the ball joint stud nut, and separate the joint from the steering knuckle. Lift the upper arm up, then place a block of wood between the frame and the arm to support it.
  8.  
  9. With the control arm in the raised position, drill a hole 1 / 4 in. (6mm) deep into each rivet. Use a 1 / 8 in. (3mm) drill bit.
  10.  
  11. Use a 1 / 2 in. drill bit and drill off the heads of each rivet.
  12.  
  13. Punch out the rivets using a small punch, then remove the ball joint.
  14.  

To install:
  1. Install the new ball joint using fasteners that meet GM specifications. Bolts should come in from the bottom with the nuts going on top. Torque to 10 ft. lbs. (14 Nm).
  2.  
  3. Turn the ball stud cotter pin hole to the fore and aft position. Remove the block of wood from between the upper control arm and frame.
  4.  
  5. Clean and inspect the steering knuckle hole. Replace the steering knuckle if any out of roundness is noted.
  6.  
  7. Insert the ball stud into the steering knuckle, and install and torque the stud nut to 60 ft. lbs. (81 Nm). Install a new cotter pin. If nut must be turned to align cotter pin holes, tighten it further. Do not back off!
  8.  
  9. Install a lube fitting, and fill the joint with fresh grease.
  10.  
  11. Remove the lower control arm support (jack, etc.) and lower the car.
  12.  



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Fig. Fig. 1: Lower ball joint wear indicator



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Fig. Fig. 2: Cotter pin installation



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Fig. Fig. 3: Drill the upper ball joints rivets



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Fig. Fig. 4: When installing the new upper ball joints - make sure that the nuts are on the top

 
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