REMOVAL & INSTALLATION
See Figure 1
- Raise and support the front end on jackstands.
- Remove the wheels.
- Remove the caliper and the brake pads as outlined under Disc Brake Pad Removal and Installation.
- Disconnect the brake hose from the caliper.
- Connect the brake hose to the caliper. When connecting the brake fluid hose to the caliper, it is recommended that a new copper washer be used at the connection of the brake hose and caliper.
- Install the brake caliper and pads onto the vehicle as outlined in this section.
- Install the wheels and lower the vehicle. Bleed the brake system.
LD Sliding Caliper (Single Piston)
See Figures 2, 3, 4, 5, 6, 7, 8 and 9
- Clean the outside of the caliper in alcohol after removing it from the vehicle and removing the brake pads.
- Drain the caliper through the inlet port.
- Roll some thick shop cloths or rags and place them between the piston and the outer legs of the caliper.
- Apply compressed air to the caliper inlet port until the piston comes out of the caliper bore. Use low air pressure to avoid having the piston pop out too rapidly and possible causing injury.
- If the piston becomes cocked in the cylinder bore and will not come out, remove the air pressure and tap the piston with a soft hammer to try and straighten it. Do not use a sharp tool or pry the piston out of the bore. Reapply the air pressure.
- Remove the boot from the piston and seal from the caliper cylinder bore.
- Clean the piston and caliper in alcohol.
- Lubricate the piston seal with clean brake fluid, and position the seal in the groove in the cylinder bore.
- Coat the outside of the piston and both of the beads of dust boot with clean brake fluid. Insert the piston through the dust boot until the boot is around the bottom (closed end) of the piston.
- Hold the piston and dust boot directly above the caliper cylinder bore, and use your fingers to work the bead of dust boot into the groove near the top of the cylinder bore.
- After the bead is seated in the groove, press straight down on the piston until it bottoms in the bore. Be careful not to cock the piston in the bore. Be careful not to cock the piston in the bore. Use a C-clamp with a block of wood inserted between the clamp and the piston to bottom the piston, if necessary.
- Install the brake pads and install the caliper. Bleed the brake hydraulic system and recenter the pressure differential valve. Do not drive the vehicle until a firm brake pedal is obtained.
See Figures 10 and 11
- Disconnect and plug the flexible brake hose.
- Remove the front shoe and lining assemblies.
- Drain the fluid from the cylinders.
- Secure the caliper in a vise and place a block of wood between the caliper bridge and the cylinders.
- Apply low pressure air to the brake hose inlet and the pistons will be forced out to the wood block.
- Remove the block of wood and remove the pistons.
- Remove the piston seals.
- Lubricate the new piston seals with clean brake fluid and install them in the seal grooves in the cylinder bores.
- Lubricate the retaining lips of the dust boots with clean brake fluid and install them in the grooves of the cylinder bores.
- Apply a film of clean brake fluid to the pistons.
- Insert the pistons into the dust boots and start them into the cylinders by hand until they are beyond the piston seals. Be careful not to dislodge or damage the piston seals.
- Place a block of wood over one piston and press the piston into the cylinder. Be careful not to cock the piston in the cylinder bore.
- Install the second piston in the same manner.
- Install the brake shoe assemblies and anti-rattle clip in the caliper assembly.
- Install the brake hose. Tighten the fitting to 25 ft. lbs. (34 Nm).
- Install the caliper and bleed the system.