GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 GMC_Truck 🢒 1999 🢒 Savana 🢒 Brakes 🢒 Drum Brakes 🢒 Brake Drum Refinishing

Tools Required

J 41013 Rotor 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
   • Drum discoloration
Refinish the brake drums ONLY when one or more of the following conditions exist:
   • Severe scoring of the drum braking surface (groove depth in excess of 1.5 mm (0.060 in)
   • Brake pulsation caused by the following:
      - Brake drum out of round
      - Corrosion or pitting that is deeper than the drum braking surface

The Accu Turn® brake lathe is approved and achieves satisfactory results.

  1. Make a mark on the brake drum in order to identify the relationship to the hub.
  2. Remove the brake drum. Refer to Brake Drum Replacement .
  3. 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.
  4. Use the J 41013 Resurfacing Kit (or equivalent) in order to THOROUGHLY clean the rust from the brake drum flange.
  5. Install the brake drum to the brake lathe. Refer to the brake lathe manufacturer's operating instructions.
  6. Refinish the brake drum. Refer to the brake lathe manufacturer's operating instructions.

    7. Important: Failure to obtain the best possible braking surface finish may cause the vehicle to stop with difficulty.

  7. After machining the brake drum, use 120 grit aluminum oxide sandpaper in order to create a non-directional braking surface.
  8. Clean the braking surfaces with denatured alcohol or with a suitable brake cleaner.
  9. Remove the brake drum from the brake lathe.
  10. Install the brake drum to the vehicle. Align the brake drum to the hub using the marks made during the removal procedure.

    11. Notice: Improperly tightened wheel bolts or nuts can lead to brake pulsation and rotor damage. In order to avoid expensive brake repairs, evenly tighten the wheel bolts or nuts to the proper torque specification.

  11. Install the tire and wheel. Refer to Tire and Wheel Removal and Installation .