Section 06-02: Brakes, Rear Drum | 1993 Mustang Workshop Manual |
Tools Required:
Minor scores on a brake drum can be removed with sandpaper. Do not refinish drums to remove score marks. A drum surface which is highly polished can cause the brake to lock-up. This polished condition should be removed either with sandpaper or by refinishing the drum. A drum that is out of round sufficiently enough to cause vehicle vibration or noise when braking, should be refinished. Remove only enough stock to true-up the drum. Brake drum maximum inside diameter is shown on each drum. Refer to Section 06-00. If the maximum inside diameter shown on the drum is exceeded either through wear or refinishing, the drum must be replaced.
Check the inside diameter of the brake drum with Brake Adjustment Gauge D81L-1103-A, or Rotunda Brake Drum Micrometer 104-00046 or equivalent.
After a drum is refinished, wipe the refinished surface with a cloth soaked in clean denatured alcohol. If one drum is refinished, the drum on the opposite side of the vehicle should also be refinished to the same diameter.