INSPECTION

1. Check the disc for any obvious defects such as excessive rust, chipping, or deep scoring. Light scoring is normal on disc brakes.
2. Install a dial indicator on the caliper so that its feeler will contact the disc about 0.20 in. (5 mm) from the outer edge of the rotor.
3. Turn the disc and observe the runout reading. If the reading exceeds 0.0039 in. (0.10 mm), the disc should be replaced.

   NOTE: All brake rotors (discs) have a minimum thickness dimension cast into them, on the hub between the lugs. This is the minimum wear dimension and not a refinish dimension. Do not reuse a brake rotor that will not meet specifications. Replace with a new rotor.

   Refinishing of brake rotors can be handled at machine shops equipped for brake work.

   Fig. 1: Loosen the two bolts which hold the caliper bracket to the housing, then remove the bracket

   Fig. 2: Remove the axle shaft nut and pull the disc off the axle shaft with a puller

   Fig. 3: Remove the 4 bolts which hold the disc to the hub

   Fig. 4: Separate the disc from the hub