Caliper Piston and Seal

CALIPER PISTON AND SEAL

CAUTION: Dirt, oil, and solvents can damage caliper seals. Ensure assembly area is clean and dry.

NOTE: Always use new, clean Mopar(R) DOT 3 Motor Vehicle Brake Fluid when assembling brake caliper.

NOTE: Never use old piston seals or boots.

1. Lubricate caliper pistons, piston seals and piston bores with clean, fresh brake fluid.




2. Install piston seal (1) in groove (2) of caliper bore. Seal should be started at one area of groove and gently worked around and into the groove using only your clean fingers to seat it.
3. Install NEW boot on piston and work boot lip into groove at top of piston. Stretch boot rearward straightening boot folds, then move boot forward as necessary until folds snap into place.
4. Install piston into caliper piston bore, pressing piston down to bottom of bore using hand-pressure. Using a piece of wood or wooden hammer handle may also suffice as long as piston and boot damage is avoided.




5. Seat dust boot in caliper counterbore using Installer (3), Special Tool 9089, with Handle (2), Special Tool C-4171. Install dust boot until it bottoms. Do not over-seat dust boot or damage will occur.
6. Install bleeder screw.
7. Install caliper on vehicle. Disc Brake Caliper - Installation