GM Chevy Mid-Size Cars 1964-1988 Repair Guide

Brake Drum

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CAUTION
Brake shoes 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.

REMOVAL & INSTALLATION



  1. Block the front wheels, then release the parking brake.
  2.  
  3. Raise and support the rear of the vehicle safely using jackstands.
  4.  
  5. Remove the tire and wheel assembly.
  6.  
  7. Matchmark the drum to the hub, then pull the brake drum off the hub. It may be necessary to gently tap the rear edge of the drum using a rubber mallet to start it off the studs.
  8.  
  9. If extreme resistance to removal is encountered, it will be necessary to retract the adjusting screw. Knock out the access hole in the brake drum and turn the adjusting to retract the linings from the drum.
  10.  
  11. Install a replacement hole cover before reinstalling drum.
  12.  
  13. After service, install the drums in the same position on the hub as marked during removal.
  14.  
  15. Install the tire and wheel assembly, then remove supports and carefully lower the vehicle.
  16.  
  17. Set the parking brake, then remove the blocks from the front wheels.
  18.  

DRUM INSPECTION



  1. Check the drums for any cracks, scores, grooves, or an out-of-round condition. Replace if cracked. Slight scores can be removed with fine emery cloth while extensive scoring requires turning the drum on a lathe.
  2.  
  3. Never have a drum turned more than 0.060 in. (1.524mm).
  4.  

 
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