Chrysler Full-Size Trucks 1967-1988 Repair Guide

Upper Control Arm

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REMOVAL & INSTALLATION



See Figure 1

Any time the control arm is removed, it is necessary to align the front end.

  1. Loosen the wheel lug nuts.
  2.  
  3. Raise and safely support the vehicle with jackstands under the frame rails.
  4.  
  5. Remove the wheel.
  6.  

It is always advisable to spray the bolts and nuts your working on with penetrating oil and allow it to sit for a few minutes.

  1. Remove the shock absorber as well as the upper bushing and sleeve.
  2.  
  3. Install a spring compressor and finger-tighten it, then back off 1 / 2 turn.
  4.  
  5. Remove the cotter pins and ball joint nuts.
  6.  
  7. Install a ball joint breaker C-3564-A, or equivalent, then turn the threaded portion of the tool, locking it securely against the upper stud. Spread the tool enough to place the upper ball joint under pressure, then strike the steering knuckle sharply to loosen the stud. Do not attempt to remove the stud from the steering knuckle with the tool.
  8.  
  9. Remove the tool.
  10.  
  11. Remove the eccentric pivot bolts, after marking their relative positions in the control arm.
  12.  
  13. Remove the upper control arm.
  14.  



Click image to see an enlarged view

Fig. Fig. 1: Exploded view of the upper control arm components-1972-88 vehicles

To install:
  1. Install the upper control arm.
  2.  
  3. Install the pivot bolts and finger-tighten them for now.
  4.  
  5. Position the spring on the control arm and install the compressor.
  6.  
  7. Compress the spring until the ball joint is properly positioned.
  8.  
  9. Install the ball joint nuts and tighten them to 135 ft. lbs. (183 Nm) for all except 1972-74 300 series trucks. For 1972-74 300 series trucks, the torque is 175 ft. lbs. (237 Nm).
  10.  
  11. Install new cotter pins.
  12.  
  13. Remove the spring compressor.
  14.  
  15. Install the shock absorber. Tighten the upper end to 25 ft. lbs. (33 Nm); the lower end to 15 ft. lbs. (20 Nm).
  16.  
  17. Install the wheels.
  18.  
  19. Lower the truck to the ground.
  20.  
  21. Tighten the pivot bolts to 70 ft. lbs. (94 Nm).
  22.  
  23. Have the front end alignment checked.
  24.  

CONTROL ARM BUSHING REPLACEMENT



See Figures 2 and 3

  1. Remove the upper control arm.
  2.  
  3. Place the control arm in a vise and assemble tool C-3952 and adapter SP-3953 or equivalent, over the bushing, then press the bushing out of the arm.
  4.  



Click image to see an enlarged view

Fig. Fig. 2: Control arm bushing removal tools



Click image to see an enlarged view

Fig. Fig. 3: Upper control arm bushing installation tools

  1. When installing the new bushing, be sure the control arm is supported squarely at the point where the bushing is being pressed in.
  2.  

Do not use grease or oil to aid in installation.

  1. Position the flange of the new bushing in tool C-3962 or equivalent, then support the arm and press the bushing into the control arm from the outside. Do this until the tapered portion seats on the arm.
  2.  
  3. Install the control arm on the truck.
  4.  

 
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