GM Firebird 1982-1992 Repair Guide

Brake Disc (Rotor)

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REMOVAL & INSTALLATION




CAUTION
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. Raise and support the car. Remove the wheel.
  2.  
  3. Remove the caliper by referring to the Rear Caliper Removal procedure. Pull the brake disc from the axle.
  4.  
  5. To install, place the rotor onto the spindle and install caliper.
  6.  
  7. Install the wheel and lower the car.
  8.  

INSPECTION



  1. Raise and support the car. Remove the wheel. Replace wheel nuts to hold rotor in place.
  2.  
  3. Check the rotor surface for wear, scoring, grooves or rust pitting. Rotor damage can be corrected by refacing, consult your local garage or machine shop. If the damage exceeds the minimum thickness, which is stamped on the rotor, replace the rotor.
  4.  
  5. Using a dial indicator, check the rotor parallelism at several points around the circumference. The difference must not vary more than 0.0005 in. (0.013mm). Make all measurements at the same distance in from the edge of the rotor.
  6.  
  7. Using the same dial indicator, measure the rotor runout. The runout should not exceed 0.004 in. (0.10mm).
  8.  
  9. If any of these conditions are not met, reface or replace the rotor.
  10.  

 
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