Special Tools
CH-47661 On-Vehicle Brake Lathe
Note: Do NOT refinish the brake rotors in order to correct any of the following complaints:
• Growl or squeal brake noise • Premature brake lining wear • Cosmetic or superficial corrosion of the rotor braking surface • Rotor discoloration • Groove depth in excess of specification • Severe scoring of the rotor braking surface • Brake pulsation caused by the following: - Lateral runout in excess of specification - Brake rotor thickness variation in excess of specification - Corrosion or pitting that is deeper than the rotor braking surface
- Use a micrometer in order to measure the thinnest point of the brake rotor. If the thinnest point of the brake rotor exceeds the brake rotor minimum thickness, do NOT refinish the brake rotor. Replace the brake rotor.
- Use the CH-47661 to refinish the brake rotor. Refer to the brake lathe manufacturer's operating instructions.
- After machining the rotor, use 120 grit aluminum oxide sandpaper and a non-directional rotor finisher, if available, in order to create a non-directional braking surface.
- Clean the braking surfaces with GM P/N 12377981 (Canadian P/N 10953463) or equivalent, brake parts cleaner.
Note: Failure to obtain the best possible braking surface finish may cause the vehicle to stop with difficulty.
