Pontiac Fiero 1984-1988 Repair Guide

Rear Wheel Bearings

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REMOVAL & INSTALLATION





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Fig. Fig. 1 Exploded views of a common rear wheel bearing removal and installation

  1. Remove the hub cap and loosen lug nuts. Raise the vehicle and support with jackstands.
  2.  
  3. Remove the wheel assemblies and install halfshaft boot protectors J-33162 or equivalent.
  4.  


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 hub nut and washer, discard the old nut to replace with new.
  2.  
  3. Remove the caliper and rotor.
  4.  
  5. Remove the three hub and bearing-to-knuckle attaching bolts.
  6.  

If the bearing is being reused, mark the attaching bolts and corresponding holes for proper reinstallation.

  1. Install bearing removal tool J-28733 or equivalent and remove the hub and bearing assembly.
  2.  

If installing a new bearing, replace the knuckle seal.

To install:

  1. Clean and inspect the bearing mating surfaces and knuckle bore for dirt, nicks and burrs. Repair or replace where necessary.
  2.  
  3. Install a new knuckle seal using a seal installer tool J-28671 or equivalent. Apply axle grease to the seal and knuckle bore.
  4.  
  5. Push the hub and bearing onto the axle shaft.
  6.  
  7. Apply partial torque to the new hub nut until the hub and bearing is seated. About 74 ft. lbs. (100 Nm) of initial torque.
  8.  
  9. Install the brake shield and hub-to-knuckle attaching bolts and torque to 55-70 ft. lbs. (75-95 Nm).
  10.  
  11. Install the caliper and rotor assemblies.
  12.  
  13. Install the wheel assemblies and torque the lug nuts to 100 ft. lbs. (136 Nm). Lower the vehicle.
  14.  
  15. Apply final torque to the hub nut, 200 ft. lbs. (270 Nm).
  16.  

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

 
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