Durango 4WD V8-5.9L VIN Z (1998)
Brake Rotor/Disc: Service and Repair
Rotor Refinishing
Rotor braking surfaces can be sanded or machined in a disc brake lathe.
Fig 6 Refacing Brake Disc
The lathe must machine both sides of the rotor simultaneously with dual (two) cutter heads. Equipment capable of machining only one side at a time
will produce a tapered rotor.
Fig 7 Refacing Brake Disc -- Final Finish
The lathe should also be equipped with a grinder attachment or dual sanding discs for final cleanup or light refinishing.
If the rotor surfaces only need minor cleanup, of rust, scale, or minor scoring, use abrasive discs to clean up the rotor surfaces. However, when a rotor
is scored or worn, machining with cutting tools will be required.
CAUTION: Do not machine the rotor if it will cause the rotor to fall below minimum allowable thickness.
NOTE: Rotor minimum thickness is usually specified on the rotor hub. The specification is either stamped or cast into the hub surface.