Brake shoes contain asbestos, which has been determined to be a cancer causing agent. Never clean the brake surfaces with compressed air! Avoid inhaling any dust from any brake surface! When cleaning brake surfaces, use a commercially available brake cleaning fluid.
REMOVAL & INSTALLATION
- Remove the hub cap and loosen the lug nuts.
- Raise the rear of the truck and safely support it with jackstands.
- Remove the lug nuts and the wheel.
- Disconnect and plug the brake line.
- Remove the caliper slide pin bolts and lift out the caliper.
- Press the caliper piston into the housing until it is flush and then install the caliper. Tighten the mounting bolts 23-30 ft. lbs. (31-41 Nm). Bleed the brake system.
See Figures 1 and 2
- Raise and support the truck on jackstands.
- Remove the wheels.
- Remove the caliper pin bolts and lift off the caliper.
- Remove the brake pads.
- Disconnect and cap the brake hose.
- Remove the caliper pins and separate the cylinder body from the torque member.
- Remove the piston retainer.
- Using compressed air, such as a portable compressor, place the air nozzle in the brake line hole and force the piston out of the cylinder body. It's a good idea to place a piece of wood in the cylinder body to cushion the piston as it leaves the cylinder. Wear safety goggles, as some brake fluid may be sprayed out.
- Remove the piston seal from its groove in the cylinder.
- Clean all parts in clean brake fluid. Check the cylinder bore and piston for wear, scratches and scoring. Minor rust and scratches in the cylinder bore may be removed with fine emery cloth. Any other damage will necessitate the replacement of the affected cylinder body. Any cracks in the torque member will require replacement of the part. The piston sliding surface is plated. DO NOT USE EMERY CLOTH OR ANY OTHER POLISHING MATERIAL TO REMOVE RUST OR OTHER FOREIGN MATTER. Replace the piston seal and dust boot. If the support pins are damaged at all, replace them.
- Assembly is the reverse of disassembly. Coat all metal parts with clean brake fluid prior to assembly. Apply a thin coating of silicone brake lubricant to the support pins and bushings. Tighten the pin bolts.