Grand Cherokee 2WD L6-4.0L VIN S (1997)
Fig. 11 Rear Caliper Piston Seal Removal
6. Remove and discard caliper piston seal with pencil, or plastic tool. Do not use metal tools as they will scratch piston bore.
Assembly
1. Lubricate caliper piston bore and new piston seal with clean brake fluid.
2. Install new piston seal in groove machined in piston bore. Be sure seal is fully seated and is not twisted. Press seal into place with fingertips.
3. Lubricate caliper piston with clean brake fluid and start piston into bore and seal by hand. Use a twisting, rocking motion to start piston into seal.
Keep piston level while starting it in seal otherwise seal can be folded over.
4. Once piston is firmly started in seal, press piston about 2/3 of way into bore with C-clamp or bench vise.
CAUTION: Position a protective wood block between the piston and C-clamp or vise jaws. The wood block will avoid chipping or cracking the
piston while pressing it into place.
5. Install dust boot on piston. Be sure boot lip is fully seated in groove at top of caliper piston.
