GM Cadillac 1967-1989 Repair Guide

Lower Control Arm

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REMOVAL & INSTALLATION



See Figure 1

All Models Except 1986-89 Eldorado/Seville
  1. Remove the spring or torsion bar as described earlier.
  2.  
  3. Remove the ball stud from the steering knuckle as described earlier.
  4.  
  5. Remove the control arm pivot bolts and the control arm.
  6.  
  7. To install, reverse the above procedure. If any bolts are to be replaced, do so with bolts of equal strengthened quality.
  8.  



Click image to see an enlarged view

Fig. Fig. 1: Common lower control arm removal - coil spring models

1986-89 Eldorado and Seville

See Figures 2 and 3


WARNING
Throughout this procedure, take care not to overextend the tri-pot joints. Overextension could result in separation of internal components, resulting in eventual failure of the joint. The damage done would not be readily detectable. You will need a 90 degree angle torque wrench J-35551 or equivalent.

  1. Raise the car and support it by the cradle on jackstands. Remove the tire and wheel.
  2.  
  3. Disconnect the stabilizer shaft insulator, retainers, spacer, and bolt from the control arm.
  4.  
  5. Disconnect the lower ball joint from the knuckle.
  6.  
  7. Remove the control arm bushing bolt and front nut, retainer, and insulator. Then, remove the control arm from the frame.
  8.  

To install:
  1. Install the control arm back onto the frame with the bushing bolt and front nut, retainer, and insulator, but do not tighten them at this time.
  2.  
  3. Connect the lower ball joint to the knuckle.
  4.  
  5. Connect the stabilizer shaft insulator, retainers, spacer, and bolt. Tighten the shaft nut/bolt to 13 ft. lbs. (18 Nm).
  6.  
  7. Insert the ball joint stud into the steering knuckle, and install the nut. Torque the nut to 7 ft. lbs. (9 Nm); then turn it an additional 180 degrees while watching the required torque. Torque must reach at least 48 ft. lbs. (65 Nm) in that 180 degrees. Install the cotter pin.
  8.  
  9. Install the tire and wheel, then lower the car to the ground, leaving it unsupported by any jacking equipment. Torque the wheel nuts to 100 ft. lbs. (136 Nm). Then, torque the control arm bushing bolt to 100 ft. lbs. (136 Nm), or if it is a nut, to 91 ft. lbs. (123 Nm). Torque the retaining nut to 52 ft. lbs. (70 Nm).
  10.  



Click image to see an enlarged view

Fig. Fig. 2: Lower control arm and steering knuckle - 1986-89 Eldorado and Seville



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Fig. Fig. 3: Control arms and related components - torsion bar front wheel drive models

 
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