GM Cadillac 1967-1989 Repair Guide

Lower Control Arm and Knuckle

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REMOVAL & INSTALLATION



See Figures 1 and 2

1986-89 Eldorado and Seville
  1. Raise the vehicle and support it on safety stands. Remove the wheel.
  2.  
  3. If removing the left side control arm, disconnect the Electronic Level Control (ELC) height sensor link.
  4.  
  5. If equipped with a rear stabilizer bar, remove the bar mounting bolt at the strut.
  6.  
  7. Reinstall two wheel bolts to hold the rotor in place on the hub and bearing assembly.
  8.  
  9. Remove the brake caliper without disconnecting the hydraulic lines and suspend it out of the way.
  10.  
  11. Loosen the knuckle pivot bolt on the outer end of the control arm. DO NOT REMOVE THE PIVOT BOLT AT THIS TIME!
  12.  
  13. Remove the strut rod cap, mounting nut, retainer and the upper insulator.
  14.  
  15. Carefully compress the strut with your hand, then remove the lower insulator.
  16.  
  17. Remove the knuckle pivot bolt while supporting the knuckle. Remove the knuckle, strut, hub and bearing and rotor as an assembly.
  18.  
  19. Remove the two inner mounting bolts, then lift out the lower control arm.
  20.  

To install:
  1. Position the control arm and install both inner mounting bolts. DO NOT TIGHTEN THE BOLTS!
  2.  
  3. Position the knuckle, strut, hub and bearing, and the rotor assembly on the control arm, then install the pivot bolt. DO NOT TIGHTEN THE PIVOT BOLT!
  4.  
  5. Install the lower strut insulator and position the strut rod in the crossmember assembly.
  6.  
  7. Install the upper strut insulator, retainer and nut.
  8.  
  9. Now you may tighten all the bolts. Tighten the upper strut nut to 65 ft. lbs. (88 Nm); the knuckle pivot bolt to 59 ft. lbs. (80 Nm); and the two inner control arm bolts to 66 ft. lbs. (90 Nm).
  10.  
  11. Install the strut rod cap and the stabilizer bar mounting bolt. Tighten it to 43 ft. lbs. (58 Nm).
  12.  
  13. Remove the two wheel nuts and install the brake caliper using new mounting bolts. Connect the ELC height sensor link, install the wheel and lower the car.
  14.  



Click image to see an enlarged view

Fig. Fig. 1: Rear lower control arm - 1986-89 Eldorado and Seville



Click image to see an enlarged view

Fig. Fig. 2: Rear knuckle - 1986-89 Eldorado and Seville

 
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