- With the tire and wheel
assemblies removed and the brake rotors retained by wheel bolts, visually
inspect the caliper piston dust boot (2) sealing area to ensure that
there are no brake fluid leaks.
- If any evidence of a brake fluid leak is present, the brake caliper
requires overhaul or replacement.
- While the brake system is at rest (4), observe the position
of the caliper piston (1) in relation to the caliper housing.
- Have an assistant apply and release the brake pedal several times
while you observe the operation of the hydraulic brake caliper.
| 4.1. | Observe the caliper piston (1) for unrestricted and even
movement during each apply of the brake system (5). |
| 4.2. | Observe the caliper piston (1) for an unrestricted and
even return motion during each release of the brake system (6). |
- If the caliper piston (1) did not exhibit unrestricted
and even movement during brake system apply and/or release, the piston square
seal (3) may be worn or damaged and the caliper may require overhaul
or replacement.
