Brake Caliper: Disassembly
Clean exterior of caliper with denatured alcohol and place on a clean work surface. Remove brake hose and discard copper gasket, then drain fluid from caliper. Using clean shop towels to pad interior of caliper, apply compressed air to caliper inlet and remove piston.
CAUTION:
Use only enough air pressure to ease piston out of bore.
Using a screwdriver, pry boot out of caliper, then pry piston seal from caliper using a piece of wood or plastic.
CAUTION:
Do not use a metal tool to remove piston seal as bore may be damaged.
Remove bleeder valve from caliper.