Before servicing the rear disc brake caliper, use a brake pedal holding tool to move the pedal past its first inch which separates the master cylinder from the brake hydraulic system. Raise the vehicle and remove the tire and wheel from the rear end. To separate the hose from the caliper, remove the banjo bolt, full of washers, discard both and add new washers. When needed, pull back the
Piston on the calipers a bit to ensure you can pull it away from the rotor. Remove the two caliper guide pin bolts, then turn the caliper toward the middle of your car and lift it off the brake adapter. Wash the caliper and look it over before disassembling it. Slide the guide pin bushing sleeve backward into the bracket and pull it out and then collapse one part of the rubber guide pin bushing to remove them. Remove the piston by hanging the caliper over the rotor, placing a small bit of wood to push apart the piston and caliper fingers and gently pulling the brake pedal. It is best to disconnect the flex hose, place the caliper in a vise and protect the bore while removing the dust boot and seal from the piston. Clean inside the piston before measuring for scoring or pitting and use Caliper Hone C-4095, Special Tool C-4095 to perform honing when necessary, only increasing the diameter by a maximum of 0.0254 mm (0.001 inch). If the piston is damaged, you should replace it. Clean the caliper using fresh brake fluid or Mopars Non-Chlorinated Brake Parts Cleaner and do not use harmful solvents. Examine the dust boots for any leaks, rips or cracks and if any are found, change the seals and dust boots on the caliper. When folding the guide pin bushing and inserting it into the caliper mounting boss, see that it fits in evenly. Put lubricant on the bushing and slot the guide pin sleeve in position. Before putting it in the bore, dip a new seal in clean brake fluid and then coat the boot on the new piston with brake fluid. Slide Special Tool C-4689 and Handle C-4171 into the boot's counterbore to drive the boot into place. After that, replace the brake shoes and caliper, generously greasing the adapter caliper slide abutments. Gently set the caliper onto the rotor and be sure to screw in each guide pin bolt just to 22 Nm (192 in. lbs.). Add new washers and a banjo bolt, reattach the brake hose and tighten it with 48 Nm (35 ft. lbs.); then, tighten the nut on the wheel assembly with 135 Nm (100 ft. lbs.) and put the tire back on. Bring the vehicle down, get rid of the tool on the brake pedal, bleed the caliper if needed and take it out for a road test.