OEM 2002 Mercury Grand Marquis Brake Caliper

2002 Mercury Grand Marquis Brake Caliper Parts Q&A

• Q: How to service and repair the brake caliper on 2002 Mercury Grand Marquis?

  A: You should start brake caliper service by taking out the disc brake caliper and you need to drain all the brake fluid. Attach low air pressure to a caliper fluid port while inserting wood between the caliper bridge and pistons to push out the pistons. After extracting the caliper pistons, remove the block of wood and discard the piston seals together with boots, the bleed screw as well as the cap. As bore-honning caliper pistons are unavailable for honed bores during assembly it should be avoided. The caliper pistons alongside the caliper need inspection for dirt removal and appearance inspection to check for damage where necessary. Brake Parts Cleaner F6AZ-2C410-AB or equivalent product should be used to clean caliper bores until the bores achieve total dryness before caliper parts can be reinstalled. The bores must receive new caliper replacement when corrosion or score conditions reach unacceptable levels. Clean brake fluid should be used to lubricate caliper pistons and piston seals but the replacement of both piston seals and dust boots should be strictly avoided. Use clean High Performance DOT 3 Motor Vehicle Brake Fluid C6AZ-19542-AB or equivalent DOT 3 fluid matching Ford specification ESA-M6C25-A. Alternatively, DOT 4 Brake Fluid from SAE-J1704-DOT 4 Ford specification can also be used. Insert the piston seal and its boot properly onto the piston before gently pressing the caliper piston into the bore through an uncocked motion. End the procedure by installing both new components: the bleed screw and cap as well as the disc brake caliper.