Tools Required
J 41013 Resurfacing
Kit (or equivalent)
Important: Do NOT refinish the brake drums in order to correct any of the following
complaints:
| • | Brake noise (growl/squeal) |
| • | Premature brake lining wear |
| • | Cosmetic or superficial corrosion of the drum braking surface |
| • | Severe scoring of the drum braking surface (groove depth in excess
of specification) |
| • | Brake pulsation caused by the following: |
| - | Brake drum out of round (runout in excess of specification) |
| - | Corrosion or pitting that is deeper than the drum braking surface |
- Use a micrometer in order to measure the largest diameter of the
brake drum. If the largest diameter of the brake drum exceeds the brake drum
maximum refinish diameter, do NOT refinish the brake drum. Replace the brake
drum.
- Use the J 41013
Resurfacing Kit (or equivalent) in order to THOROUGHLY clean the rust from
the brake drum flange.
- Refinish the brake drum. Refer to the brake lathe manufacturer's
operating instructions.
Important: Failure to obtain the best possible braking surface finish may cause
the vehicle to stop with difficulty.
- After machining the brake drum, use 120 grit aluminum oxide sandpaper
in order to create a non-directional braking surface.
- Clean the braking surfaces with GM P/N 12377981
or equivalent brake parts cleaner.
