Inspect the disc brake pads for oil or grease contamination, abnormal wear or cracking, and for deterioration or damage due to heat. Check the thickness of the pads; the minimum allowable thickness is 1 / 8 in. Always replace the brake pads in axle sets; never replace just one pad of a brake assembly.
Removal & Installation
- Turn the air suspension service off.
- Raise and safely support the rear of the vehicle securely on jackstands.
- Remove the wheel and tire assembly.
- Remove the bolt retaining rear brake hose support bracket, where necessary.
- Remove the retaining clip from the parking brake rear cable an conduit at the rear disc brake caliper.
- Remove the cable end from the parking brake lever.
- Remove the upper disc brake caliper-locating pin.
- Remove the lower disc brake caliper-locating pin.
- Rotate the rear disc brake caliper away from the rear disc brake rotor.
- Remove the inner and outer rear brake shoe and lining assemblies from the rear disc support bracket.
- Make sure that one of the two slots in the piston face is positioned so it will engage the nib on the brake shoe.
- Using the rear caliper piston adjuster rotate the piston clockwise while applying pressure inward, until it is fully seated.
- Install the inner and outer rear brake shoe and lining assemblies in the rear disc support bracket.
- Rotate the rear disc brake caliper over the rear disc brake rotor into position on the rear disc support bracket. Make sure that the rear brake shoe and lining assemblies are installed correctly.
- Remove any residue from the rear brake pin retainer bolt threads and apply one drop of a thread sealer. Install the disc brake caliper locating pin and tighten .
- Attach the cable end to the parking brake lever. Install the cable retaining clip on the rear disc brake caliper.
- Position the rear wheel brake hose to the side rail and install the retaining bolt.
- Install the wheel and tire assembly.
- Lower the vehicle and turn the air suspension on.