Pontiac Fiero 1984-1988 Repair Guide

Knuckle

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REMOVAL & INSTALLATION



1984-87 Models


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Fig. Fig. 1 Common rear knuckle assembly components-1984-87 models

  1. Remove the rear wheel bearings as outlined in the previous section.
  2.  
  3. Remove the toe link rod at the knuckle.
  4.  
  5. Remove the lower ball joint clamp nut and lower control arm from the knuckle. The knuckle may have to be tapped with a plastic hammer to remove the lower ball joint. Be careful not to damage the grease boot.
  6.  
  7. Remove both through bolts holding the strut-to-knuckle and remove the knuckle.
  8.  

To install:

  1. Position the knuckle to the ball joint and loosely install the knuckle to strut.
  2.  
  3. Install the toe link rod-to-knuckle and torque to 30-39 ft. lbs. (40-54 Nm).
  4.  
  5. Torque the strut attaching bolts to 133-147 ft. lbs. (180-200 Nm).
  6.  
  7. Install the hub and bearing assembly as outlined in the previous procedure.
  8.  
  9. Install the wheel assemblies and torque the lug nuts to 100 ft. lbs. (136 Nm).
  10.  
  11. Have a rear wheel alignment performed by a qualified alignment technician.
  12.  

1988 Models


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Fig. Fig. 2 Exploded view of the rear knuckle assembly-1988 models

  1. Raise the vehicle and support with jackstands.
  2.  
  3. Install halfshaft boot protectors J-33162 or equivalent.
  4.  
  5. Remove the rear wheel assemblies.
  6.  
  7. Remove the hub nut.
  8.  


CAUTION
Some brake pads contain asbestos, which has been determined to be a cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.

  1. Remove the caliper and rotor, trailing arm at knuckle, fixed adjusting link/lateral control arm through bolts and strut mounting bolts.
  2.  
  3. Remove the hub/knuckle assembly from the drive axle.
  4.  

To install:

  1. Install the hub/knuckle to the drive axle.
  2.  
  3. Loosely install the strut mounting bolts with the bolt heads to the rear.
  4.  
  5. Install the fixed adjusting link/lateral control arm through bolts and torque to 37 ft. lbs. (50 Nm) + 90° turn.
  6.  
  7. Install the trailing arm and torque the nut to 44 ft. lbs. (60 Nm).
  8.  
  9. Torque the strut mounting bolts to 140 ft. lbs. (190 Nm).
  10.  
  11. Install the brake rotor and caliper as outlined in the Rear Brake Caliper procedures in .
  12.  
  13. Partially torque the NEW hub nut and washer to 74 ft. lbs. (100 Nm).
  14.  
  15. Remove the halfshaft boot protectors and install the rear wheel assemblies. Torque the lug nuts to 100 ft. lbs. (136 Nm).
  16.  
  17. Lower the vehicle.
  18.  
  19. Apply the final torque to the hub nut at 200 ft. lbs. (270 Nm).
  20.  

This torque setting is very important to provide proper bearing load.

  1. Have the rear camber and toe aligned by a qualified alignment technician.
  2.  

 
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