Refinishing Precaution

NOTE: DO NOT refinish brake rotors when performing routine brake maintenance such as replacing worn disc brake pads. Refinish a rotor only under the following circumstances:
- There is a complaint of brake pulsation.
- There are heat spots or excessive scoring.

All brake rotors have a minimum thickness dimension cast into them. This dimension is the minimum wear dimension and not a refinish dimension. Do not use a brake rotor that will not meet the Specifications. A rotor which has been refinished too thin will not have proper heat transfer capabilities; replace it with a new brace rotor. Accurate control for the rotor tolerances is necessary for proper performance of the disc brakes. Machining of rotors should be done only with precision equipment. The equipment should be serviced on a regular basis following the manufacturer's recommended maintenance procedure. When refinishing rotors, the attaching adapters, tool holders, vibration dampeners, and tool bits must be in good condition. Always use sharp cutting tools or bits and use only replacement cutting bits recommended by the equipment manufacturer. Dull or worn tools leave a poor surface finish which will affect initial braking performance. Vibration dampening attachments should always be used when refinishing braking surfaces. These attachments eliminate tool chatter and will result in a better surface finish. Make sure adapters are clean and free of nicks.