Expedition 4WD V8-4.6L SOHC VIN 6 (1997)
Remove Caliper Piston
4. Remove the caliper piston.
a. Place a block of wood between the caliper bridge and the caliper piston.
b. Apply low air pressure to the fluid port in the rear disc brake caliper.
c. Force out the caliper piston to the block of wood.
d. Remove the block of wood and the caliper piston.
Remove Piston Seal And Dust Boot
5. Remove and discard the piston seal and dust boot.
NOTE: Do not hone the cylinder bore. Pistons are not available for honed cylinder bores. If the rear disc brake caliper cylinder bore is
excessively scored or corroded, replace the rear disc brake caliper.
CAUTION:
^
Never reuse the piston seal or dust boot.
^
Never reuse brake fluid that has been drained from the hydraulic system or has been allowed to stand in an open container for an extended period
of time.
ASSEMBLY
1. Lubricate the following with High Performance DOT 3 Brake Fluid C6AZ-19542-AB or DOT 3 equivalent meeting Ford specification
ESA-M6C25-A, DOT 3.
a. Cylinder bore.
b. Piston seal.
c. Caliper piston.
d. Piston dust boot.
