Q: How to Disassemble and Service a Rear Disc Brake Caliper on 2001 Chrysler Sebring?
A: Before removing the rear disc brake caliper, wash and review it carefully. With a finger, press down one bush by sliding it toward you, then pull it out of the brake caliper mounting boss and do the same to the other one. High-pressure air should never be used to remove a piston from a caliper bore because it could result in an accident and personal injury. An effective and safe way to get rid of the piston is by using the hydraulic power of your car's brakes. Get the caliper off the brake rotor, then hang it on a wire hook to ensure the brake fluid doesn't touch either the rotor or the car body. Take out the brake shoes, add a small piece of wood between the piston and caliper fingers and use the brake pedal to release the piston. Once you finish, press the brake pedal all the way down the last inch to keep fluid from escaping the reservoir. Remove the brake fluid flex hose from the vehicle and the caliper assembly and avoid applying strong clamping force with the vise, since this could change the shape of the bore. Place the caliper carefully in a vise using protectors to hold it, unscrew or cut away the piston dust boot and use a plastic trim stick to work the piston seal from its groove, dumping both parts into the trash. Alcohol or a suitable solvent should be used to clean the piston's bore and the drilled channels, then wipe these areas dry with a lint-free cloth, checking for marks or tiny holes; these may improve with a little rubbed crocus cloth. When assembling, place your fingers behind the caliper and push in the guide pin bushing, folded in half lengthwise, into the mounting boss. Then, slowly unfold it and check that both bushing flanges fit evenly on both sides of the mount. Place Mopar(R) Dielectric Grease or a similar grease on the insides of the second bushing and repeat this for any other bushings. After dipping the new piston seal in clean brake fluid, place it in the caliper's bore groove and work it into place with your clean fingers. Soak the new boot in brake fluid, fill the inside with some fluid and place it above the piston. Push the piston into the bore at a steady speed to add it straight without putting stress on one area. Push the piston down into the caliper bore via the seal, so that the piston is fully inside, then put the dust boot into place in the counterbore of the piston bore. Use the hammer, along with Installers, Special Tool C-4689 or C-4842 (depending on the piston) and Handle, Special Tool C-4171 to push the boot into the counterbore properly. In the end, fit back the caliper and perform any brakes bleeds that are needed.