Remove the brake pads as described later in this section and measure the thickness of the lining. If the lining at ANY point on the pad assembly is less then specification, or there is evidence of the lining having been contaminated by brake fluid or oil, replace the brake pad. For light duty brakes the lining should be at least 1 / 16 in. (1.5mm) thick above the backing plate or rivets (as applicable). Heavy duty brakes should allow a minimum lining thickness of 1 / 32 in. (0.8mm).
Of course, many states have their own standards for safety. When in doubt, check with local authorities or an official inspection station for local safety inspection standards.
REMOVAL & INSTALLATION
NEVER REPLACE THE PADS ON ONE SIDE ONLY! ALWAYS REPLACE PADS ON BOTH WHEELS AS A SET!Chrysler Sliding Caliper
See Figures 1 through 10
- Raise and support the front end on jackstands.
- Remove the wheels.
- Remove the caliper retaining clips and anti-rattle springs.
- Remove the caliper from the disc by slowly sliding the caliper and brake pad assembly out and away from the disc. Do not damage the flexible brake hose.
- Drain some of the fluid from the master cylinder.
- Remove the outboard pad from the caliper by prying between the pad and the caliper fingers. Remove the inboard pad from the caliper support by the same method. DO NOT depress the brake pedal with the pads removed!
- Push the pistons to the bottom of their bores. This may be done with a large C-clamp or a pair of large pliers by placing a flat metal bar against the pistons and depressing the pistons with a steady force. This operation will displace some of the fluid in the master cylinder.
- Slide the new pads into the caliper and caliper support. The ears of the pad should rest on the bridges of the caliper.
- Install the caliper on the disc and install the caliper retaining clips, pins and anti-rattle springs. Pump the brake pedal until it is firm.
- Check the fluid level in the master cylinder and add fluid as needed.
- Install the wheels.
- Road test the truck. Although the vehicle may pull to one slightly, the pull should disappear shortly as the pads wear in.
See Figures 11 through 19
- Remove and discard some of the fluid from the master cylinder without contaminating the contents to avoid overflow later on.
- Support the vehicle on jackstands. Remove the wheels.
- Put an 8 in. (203mm) C-clamp over the caliper and use it to push the outer pad in and pull the caliper out. This bottoms the caliper piston in its bore.
- Remove the key retaining screw. Drive the caliper support key and spring out toward the outside, using a brass drift.
- Push the caliper down and rotate the upper end up and out. Support the caliper, so as not to damage the brake hose.
- Remove the outer pad from the caliper. You may have to tap it to loosen it. Remove the inner pad, removing the anti-rattle clip from the lower end of the shoe.
- Thoroughly clean the sliding contact areas on the caliper and spindle assembly.
- Put the new anti-rattle clip on the lower end of the new inner pad. Put the pad and clip in the pad abutment with the clip tab against the abutment and the loop-type spring away from the disc. Compress the clip and slide the upper end of the pad into place.
- If the caliper piston isn't bottomed, bottom it with a C-clamp.
- The replacement outer pad may differ slightly from the original equipment. Put the outer pad in place and press the tabs into place with your fingers. You can press the tabs in with a C-clamp, but be careful of the lining.
- Position the caliper on the spindle assembly by pivoting it around the upper mounting surface. Be careful of the boot.
- Use a prytool to hold the upper machined surface of the caliper against the support assembly. Drive a new key and spring assembly into place with a plastic mallet. Install the retaining screw and tighten to 12-20 ft. lbs. (16-27 Nm).
- Replace the wheels and tires and lower the truck to the floor. Fill the master cylinder as specified in General Information & Maintenance . Depress the brake pedal firmly several times to seat the pads on the disc. Don't drive until you get a firm pedal.
- Raise the vehicle and remove the wheel.
- Remove the guide pins, positioners, and anti-rattle spring.
- Slowly slide the caliper assembly away from the rotor.
Support the caliper to prevent damage to brake hose.
- Remove the disc pads, guide pin bushings, and positioners, discard of the bushings and positioners.
- Check the piston seal for leaks and inspect the dust boot for damage.
- Inspect the piston for damage or corrosion.
- Check for corrosion or rust on the mating surfaces of the caliper and anchor plate.
- Install new guide pin bushings with flanged end toward outside of vehicle.
- Bottom piston into cylinder bore and install pads.
Be sure the metal portion of pad is fully seated in recess of caliper and anchor plate.
- Carefully slide caliper assembly into position over rotor.
- Install new positioners over guide pins with open ends towards outside and stamped arrows pointing up.
- Align guide pin holes in caliper and anchor plate, install guide pin assemblies.
- Bleed the brake system.
- Install the wheel, lower the vehicle and tighten lug nuts.