Front Brake Rotor Replacement J55

Special Tools

Warning: Refer to Brake Dust Warning in the Preface section.

1. Raise and support the vehicle. Refer to Lifting and Jacking the Vehicle.
2. Remove the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.

Caution: Support the brake caliper with heavy mechanic wire, or equivalent, whenever it is separated from its mount and the hydraulic flexible brake hose is still connected. Failure to support the caliper in this manner will cause the flexible brake hose to bear the weight of the caliper, which may cause damage to the brake hose and in turn may cause a brake fluid leak.

3. Without disconnecting the brake hose fitting, remove the brake caliper and brake caliper bracket as an assembly and support with heavy mechanics wire or equivalent. Refer to Front Brake Caliper Bracket Replacement.

Note: The brake rotor is coated with a corrosion inhibitor and must not be refinished.

4. Inspect the surface of the brake rotor. Refer to Brake Rotor Surface and Wear Inspection.

Replace the brake rotor if refinishing is indicated.




5. Mark the relationship of the rotor to the hub.
6. Remove the brake rotor.

Note: Whenever the brake rotor has been separated from the hub/axle flange, any rust or contaminants should be cleaned from the hub/axle flange and the brake rotor mating surfaces. Failure to do this may result in excessive assembled lateral runout (LRO) of the brake rotor, which could lead to brake pulsation.

1. Use the J-42450-A Wheel Hub Resurfacing Kit thoroughly clean any rust or corrosion from the mating surface of the hub/axle flange.

Note: Do not remove the corrosion inhibiting coating on the friction surface of the brake rotor.

2. Using the J-41013 Rotor Resurfacing Kit thoroughly clean any rust or corrosion from the mating surface and mounting surface of the brake rotor.
3. Inspect the mating surfaces of the hub/axle flange and the rotor to ensure that there are no foreign particles or debris remaining.
4. Install the brake rotor to the hub/axle flange. Use the matchmark made prior to removal for proper orientation to the flange.
5. If the brake rotor was removed and installed as part of a brake system repair, measure the assembled lateral runout (LRO) of the brake rotor to ensure optimum performance of the disc brakes. Refer to Brake Rotor Assembled Lateral Runout Measurement.
6. If the brake rotor assembled LRO measurement exceeds the specification, bring the LRO to within specifications. Refer to Brake Rotor Assembled Lateral Runout Correction.
7. Install the brake caliper and brake caliper bracket assembly. Refer to Front Brake Caliper Bracket Replacement.
8. Install the tire and wheel assembly. Refer to Tire and Wheel Removal and Installation.
9. Burnish the brake pads and rotors. Refer to Brake Pad and Rotor Burnishing.

Front Brake Rotor Replacement JL9