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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 55 (Disc Brakes & Drum Brakes) >> Adjustments & Inspections >> Drum Brake Refinishing

Drum Brake Refinishing

WARNING: This page is about a different car, the 2002 Chevrolet Malibu. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: 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
  • Drum Discoloration
Refinish the brake drums ONLY when one or more of the following conditions exist:
  1. Severe scoring of the drum braking surface (groove depth in excess of 0.060 in (1.5 mm)
  2. Brake pulsation caused by the following:
    • Brake drum out of round.
    • Corrosion or pitting that is deeper than the drum braking surface.
  1. 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.
  2. Use the Rotor Resurfacing Kit (J-41013), or equivalent, in order to thoroughly clean the rust from the brake drum flange.
  3. Refinish the brake drum. Refer to the brake lathe manufacturer's operating instructions.
  4. After machining the brake drum, use 120 grit aluminum oxide sandpaper in order to create a non-directional braking surface.
  5. Clean the braking surfaces with denatured alcohol or with a suitable brake cleaner.