Brake Rotor Machining

STANDARD PROCEDURE - BRAKE ROTOR MACHINING

CAUTION: ONLY the front rotors on this vehicle can be machined. The rear rotors used on this vehicle are made from an aluminum silica carbide alloy. This aluminum alloy is extremely hard and cannot be properly machined using commercially available brake rotor machining equipment. The braking surface of the rear rotor will be damaged, rendering the rotor unusable, if an attempt is made to machine it. If a rear rotor exhibits a condition that requires the braking surface to be machined, the rotor must be replaced.

On-Car Brake Lathe:

Any servicing of the front brake rotor requires extreme care to maintain the rotor within service tolerances to ensure proper brake action.

If the rotor surface is deeply scored or warped, or there is a complaint of brake roughness or brake pedal pulsation, the rotor should be refaced using a hub-mounted on-car brake lathe, or replaced.

The use of a hub-mounted on-car brake lathe is highly recommended to eliminate the possibility of excessive runout. It trues the brake rotor to the vehicle's hub and bearing.

Front Rotor Minimum Thickness Marking:

NOTE: All front brake rotors have markings for minimum allowable thickness cast on an un-machined surface of the rotor.

Minimum allowable thickness is the minimum thickness which the brake rotor machined surface may be cut to.

CAUTION: Do not machine the rotor if it will cause the rotor to fall below minimum thickness.

Before installation, verify the brake rotor face and the hub adapters are free of any chips, rust, or contamination.

When mounting and using the brake lathe, strict attention to the brake lathe manufacturer's operating instructions is required.

Machine both sides of the brake rotor at the same time. Cutting both sides at the same time minimizes the possibility of a tapered or uneven cut.

SPECIFICATIONS AND LIMITS
When refacing a rotor, the required TIR (Total Indicator Reading) and thickness variation limits MUST BE MAINTAINED. Extreme care in the operation of rotor turning equipment is required.





LIMITS AND TOLERANCES