System—Service

Service Precautions

1. Grease or any other foreign material must be kept off the lining surfaces of the rotor and external surfaces of the hub during service operations. In handling the rotor and caliper assemblies, avoid deformation of the brake rotor and nicking or scratching of brake linings.

2. If a caliper piston is removed for any reason, the piston seal must be replaced. Exercise care not to damage plastic piston by protecting it from contact with any metal or sharp objects.

    CAUTION: Do not pry on plastic piston with a screwdriver or other tools, as this will cause chipping.

3. During removal and installation of a wheel assembly, exercise care not to interfere with the splash shield or the bleeder screw fitting.

4. Front wheel bearing end play is critical and must be within specification.

5. To avoid bending or damaging the splash shield on full right or left wheel turns, the vehicle must be centered on the hoist before servicing any front end components.

6. The wheel and tire must be removed separately from the brake rotor, unlike drum brakes where the wheel, tire and drum can be removed as a unit.

7. Do not attempt to clean or restore any oil or grease-soaked brake linings. When contaminated linings are found, they must be replaced in complete axle sets.

8. Always replace rubber caliper pin insulators when replacing linings. Do not lubricate the slide pins.

9. Caliper slide pins must be hand started into spindle before tightening. This is to ensure that the large diameter of pin is through outer shoe holes to prevent binding or bending. Be careful not to damage the rubber caliper pin insulator when inserting the slide pins.