Brake Caliper Overhaul
REMOVAL PROCEDURE^ Tools Required
- J 26267 Dust Boot Seal Installer.
1. Raise and support the vehicle.
2. Remove tire and wheel assembly.
3. Remove the caliper (1) from the vehicle.
4. Remove the bushings (6).
CAUTION: Do not place fingers in front of the caliper piston(s) in an attempt to catch or protect it when applying compressed air. The piston(s) can fly out with force and could result in serious bodily injury.
5. Inspect the bushings for nicks and cuts. Replace the bushings if damaged.
6. Use clean shop towels to pad the interior of the caliper during piston removal.
7. Remove the piston using compressed air into the caliper inlet hole.
8. Inspect the piston for scoring, nicks, corrosion, and worn or damaged chrome plating. Replace the piston if any of these are found.
9. Remove the boot. Be careful not to scratch the housing bore.
10. Remove the piston seal from the seal groove in the caliper bore using a small plastic or wood tool. Do not use a metal tool because this may damage the caliper bore or seal groove.
11. Inspect the caliber bore and seal groove for scoring, nicks, corrosion and wear.
12. Use a crocus cloth to polish out light corrosion. Replace the caliper housing if corrosion in and around the seal groove will not clean off with a crocus cloth.
13. Remove the bleeder valve cap.
14. Remove the bleeder valve from the caliper.
15. Clean all parts in clean, denatured alcohol.
16. Dry the parts with unlubricated compressed air.
17. Blow out all passages in the caliper housing and bleeder valve.
INSTALLATION PROCEDURE
1. Install the bleeder valve.
NOTICE: Refer to Fastener Notice in Service Precautions.
2. Install the bleeder valve cap.
^ Bleeder valve cap to 13 Nm (110 lb in)
3. Install the lubricated new piston seal into the caliper bore groove. Make sure the seal is not twisted.
4. Install the lubricated boot into the bore of the caliper. Push the piston to the bottom of the bore.
5. Using the J26267, seat the boot in the caliper housing.
6. Install the bushings.
6.1. Lubricate the beveled end of the bushing with silicone grease.
6.2. Pinch the bushing and install the beveled end first.
6.3. Push the bushing through the housing mounting bore.
7. Install the caliper into the vehicle.
8. Install tire and wheel assembly.
9. Lower the vehicle.