OEM 2002 Jeep Liberty Brake Caliper

2002 Jeep Liberty Brake Caliper Parts and Q&A

• Q: How to Service and Repair a Brake Caliper on 2002 Jeep Liberty?

  A: Before doing anything else, raise and support the car with a prop rod on the brake and remove the front wheel and assembly. Remove a little fluid from the master cylinder brake reservoir using a suction gun and if changing the caliper, remember to remove the brake hose banjo bolt. Then, take the slide pin bolts out of the mount and remove the caliper. Ease the pressure of the caliper by unscrewing the brake shoes and draining the brake fluid. Make a small wooden block with at least an inch of towels on each side and place it in front of the piston on the outboard shoe part during removal. Blow mildly compressed air, in quick bursts, into the fluid feed to remove the piston from the bore, ensuring you do not apply too much pressure and risk the piston cracking. Remove the dust boot from the caliper piston using a proper pry tool and the piston seal with wood or plastic, so as not to harm the piston bore with metal. Next, remove the caliper mounting bolt bushings and boots and clean all caliper parts with a clean brake fluid or brake brake clean, not any solvent. Check that the piston is not cracked or scored and if it is, replace it; do not try to restore a scored surface. Since the caliper piston can be phenolic resin or steel, make sure to use only the same type, as mixing them is never allowed. If the caliper bore is slightly corroded, use a brake hone to remove the damage. But if it's severely corroded or the polishing expands the bore by more than 0.025 mm (0.001 inch), replace the caliper. Prior to installing everything, make certain the assembly area is clean and dry and spray some clean brake fluid inside the caliper piston bore and onto the new piston seal and lacunar piston. Smear silicone grease onto the interior of the bushing boots and also onto the caliper bushings. Put the bushing boots inside the caliper, add the bushings and press them until they fit. Put the new seal into its groove with a finger, then place and seat the new dust boot on the caliper piston. Place your hand on the piston, hold it steady and move it straight into the caliper bore with a turning and pushing motion until the piston touches the bottom. Set the dust boot into the caliper using Installer Tool C-4842 and Tool Handle C-4171 and put in a new bleed screw if you took it out. After fitting the caliper to the caliper adapter, grease the bolts that secure the caliper mounting slide pin with silicone grease, work from the side nearest the bleeder screws to the opposite side and tighten each to 15 Nm (11 ft. lbs.). If you removed the brake hose banjo bolt, put it back now, join the brake hose to the caliper with new seal washers and tighten the bolt to 31 Nm (23 ft. lbs.), avoiding twisting or bending the hose. When everything checks out, pull out the prop rod, bleed the base brake system, lower in the wheel and tires and lower the vehicle.