Front Brake Pad Inspection and Replacement
Front Brake Pad Inspection and Replacement
Special Tools Required
- Brake Caliper Piston Compressor 07AAE-SEPA101
CAUTION
Frequent inhalation of brake pad dust, regardless of material composition, could be hazardous to your health.
- Avoid breathing dust particles.
- Never use an air hose or brush to clean brake assemblies. Use an OSHA-approved vacuum cleaner.
Inspection
NOTE: Due to the high performance nature of the brake system, the rotors and pads may wear faster. Be sure to inspect the front rotor thickness anytime the front pads are replaced.
1. Raise and support the vehicle Service and Repair.
2. Remove the front wheels.
3. Check the thickness (A) of the inner brake pad (B) and outer pad (C). Do not include the thickness of the brake pad backing plate.
4. If any part of the brake pad thickness is less than the service limit, replace all of the front brake pads as a set.
5. Clean the mating surface between the brake disc and the inside of the wheel, then install the front wheels.
Replacement
NOTE: Due to the high performance nature of the brake system, the rotors and pads may wear faster. Be sure to inspect the front rotor thickness anytime the front pads are replaced.
1. Remove some brake fluid from the master cylinder.
2. Raise and support the vehicle Service and Repair.
3. Remove the front wheels.
4. Turn and twist out the clip (A) from the caliper hole (B), and pull the clip out from the pad pins (C).
5. Remove the pad pins (A) and the pad spring (B).
6. Remove the pads (A).
7. Clean the caliper thoroughly; remove any rust, and check for grooves and cracks.
8. Inspect the brake disc for runout, thickness, parallelism Front Brake Disc Inspection, and check for damage and cracks.
9. Mount the brake caliper piston compressor tool (A) on the caliper.
10. Press in the piston with the brake caliper piston compressor tool so that the caliper will fit over the brake pads. Make sure the piston boot is in position to prevent damaging it.
NOTE: Be careful when pressing in the piston; brake fluid might overflow from the master cylinder's reservoir. If brake fluid gets on any painted surface, wash it off immediately with water.
11. Remove the brake caliper piston compressor tool.
12. Apply a thin coat of M-77 assembly paste (P/N 08798-9010) to the pad sides of the pad shim (A), the back of the brake pads (B), and the other areas indicated by the arrows. Wipe off the excess assembly paste from the brake pads friction material. Keep grease and assembly paste away from the brake pads. Contaminated brake disc or pads reduce stopping ability.
13. Install the brake pads correctly. Install the brake pad with the wear indicator (C) on the inside.
If you are reusing the brake pads, always reinstall the brake pads in their original positions to prevent a temporary loss of braking efficiency.
14. Install the pad spring (A). Hold the pad spring and install the pad pins (B) into the caliper from the outside to the inside of vehicle.
15. First insert the clip ends (A) to the pad pins (B), and then twist the clip into the caliper hole (C) to stabilize.
16. Clean the mating surface between the brake disc and the inside of the wheel, then install the front wheels.
17. Press the brake pedal several times to make sure the brakes work.
NOTE: Engagement may require a greater pedal stroke immediately after the brake pads have been replaced as a set. Several applications of the brake pedal will restore the normal pedal stroke.
18. Add brake fluid as needed.
19. After installation, check for leaks at the brake hose and line joints or connections, and retighten if necessary.
20. Test-drive the vehicle, then recheck for leaks Testing and Inspection.