GM Firebird 1982-1992 Repair Guide

Front Wheel Bearings

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ADJUSTMENT



See Figure 1



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Fig. Fig. 1: Wheel bearing adjustment

  1. Raise the car and support it at the lower arm.
  2.  
  3. Remove the hub dust cover and spindle cotter pin. Loosen the nut.
  4.  
  5. While spinning the wheel, snug the nut down to seat the bearings. Do not exert over 12 ft. lbs. (16 Nm) of force on the nut.
  6.  
  7. Back the nut off 1 / 4 turn or until it is just loose. Line up the cotter pin hole in the spindle with the hole in the nut.
  8.  
  9. Insert a new cotter pin. Endplay should be between 0.001-0.005 in. (0.03-0.13mm). If play exceeds this tolerance, the wheel bearings should be replaced.
  10.  

REMOVAL & INSTALLATION



  1. Raise the car and support it at the lower arm. Remove the wheel. Remove the brake caliper and support it on a wire.
  2.  
  3. Remove the dust cap, cotter pin, castle nut, thrust washer and outside wheel bearing. Pull the disc/hub assembly from the steering knuckle.
  4.  
  5. Pry out the inner seal and remove the inner bearing. If necessary to remove the inner bearing races, use a hammer and a brass drift to drive the bearing races from the hub.
  6.  
  7. Clean all parts in kerosene or equivalent, DO NOT use gasoline. After cleaning, check parts for excessive wear and replace damaged parts.
  8.  
  9. Smear grease inside of hub. Install the bearing races into hub, using a hammer and a brass drift. Drive the races in until they seat against the shoulder of the hub.
  10.  
  11. Pack the bearings with grease and install the inner bearing in the hub. Install a new grease seal, be careful not to damage the seal.
  12.  
  13. Install the disc/hub assembly onto the steering knuckle. Install the outer bearing, thrust washer and castle nut. Tighten the nut until the wheel does not turn freely.
  14.  
  15. Back off the nut until the wheel turns freely and install the cotter pin. Install the dust cap, caliper and wheel. Lower the car.
  16.  

PACKING



Clean the wheel bearings thoroughly with solvent and check their condition before installation.


CAUTION
Do not blow the bearing dry with compressed air as this could allow the bearing to turn without lubrication.

Apply a sizable amount of lubricant to the palm of one hand. Using your other hand, work the bearing into the lubricant so that the grease is pushed through the rollers and out the other side. Keep rotating the bearing while continuing to push the lubricant through it.

 
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