Brake Caliper: Testing and Inspection

LEAK CHECK
Visually check the caliper for fluid leakage through the housing. If the housing is cracked or the casting is leaking, replace the caliper. Also, check for fluid leakage around the piston area, past the seal and boot, and service the caliper as needed.

INSPECT
^ Pin boot, bolt boot and sleeve boot for cuts, tears or deterioration. If damaged, replace boots.

^ Bolt sleeve and pin sleeve for corrosion or damage. Pull boots to gain access to sleeves for inspection or replacement. Replace corroded or damaged sleeves. DO NOT attempt to polish away corrosion.

^ Piston assembly for scoring, nicks, cracks, wear or corrosion. Replace piston if any damage is found.

^ Piston bore for scoring, nicks, cracks, wear or corrosion. Use crocus cloth to polish out light corrosion. Otherwise, replace caliper.

^ Seal groove in caliper bore for nicks or burrs. If found, replace caliper bolt sleeve and pin sleeve for corrosion or damage. Replace corroded or damaged sleeves. Do not attempt to polish away corrosion.