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 • 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® or Ammco® brake lathe is approved and achieves satisfactory results.
- Remove the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
- Make a mark on the brake drum in order to identify the relationship to the axle flange.
- Remove the brake drum.
- 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. Refer to Component Specifications .
- Use the J 41013 Resurfacing Kit (or equivalent) in order to THOROUGHLY clean the rust from the brake drum flange.
- Install the brake drum to the brake lathe. Refer to the brake lathe manufacturer's operating instructions.
- Refinish the brake drum. Refer to the brake lathe manufacturer's operating instructions.
- 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 denatured alcohol or with a suitable brake cleaner.
- Remove the brake drum from the brake lathe.
- Install the brake drum to the vehicle. Align the brake drum to the hub using the marks made during the removal procedure.
- Install the tire and wheel. Refer to Tire and Wheel Removal and Installation in Tires and Wheels.
Important: Failure to obtain the best possible braking surface finish may cause the vehicle to stop with difficulty.
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.
