Removal
Apply the handbrake, then raise the vehicle's axle and secure it on stands under the drive axle.
Remove the brake pads as described in the previous section.
When working under the hood, remove the brake fluid reservoir cap and secure a piece of polyethylene to the neck with a rubber band or put the cap back on. This is necessary to reduce fluid leakage during subsequent operations.
Loosen the brake fluid hose mounting bolt on the back of the bracket and disconnect the hose. Remove the two sealing rings. Fluid may leak, so the ends of the hoses must be sealed.
Remove the bracket housing.
Repair
Use a brush to remove any dirt from the bracket, being careful not to inhale the dust.
Using a screwdriver, carefully pry the dust seal off the end of the piston and remove the caliper housing.
Install a thin sliver (piece of stick) in front of the piston to prevent it from flying out of the hole and getting damaged, then apply low pressure air from a foot pump into the hole to push the piston out.
Carefully remove the piston.
Carefully pry the seal out of the recess using a plastic or wooden tool.
Visually inspect the piston surfaces and bore for scratches or signs of metal-to-metal friction. Replace the entire caliper assembly if necessary.
If the piston and bore are in good condition, discard the old seals and install new ones.
Clean the piston and bore with brake fluid or denatured alcohol.
Begin assembly by installing the dust seal.
Position the dust seal in the piston recess. Dip the piston in clean brake fluid and insert it into the cylinder. Make sure the notches in the piston cutouts are vertical.
After the piston has partially entered the cylinder, insert the dust seal.
Insert the piston as far into the hole as possible, but not all the way in.
Installation
If required, install the bracket bracket and tighten the bolts as required.
Connect the brake fluid hose, installing new sealing rings.
Install the brake pads as directed previous section.
Remove the plastic from the neck of the brake fluid reservoir.
Install the running wheel and lower the vehicle to the ground.
Visitor comments