Disc Brake Caliper: Disassembly
- Remove retaining snap ring (if equipped) and piston dust boot. Place rags in front of piston to prevent damage during removal.
- Force piston out of caliper bore by applying 30 psi (2.1 kg/cm2 ) air pressure to brake fluid inlet port. Remove and discard piston square ring seal without damaging cylinder bore. See Fig 1 and Figure .