Navigator 4WD V8-5.4L DOHC VIN R (2001)
6. Remove the primary piston assembly.
1
Depress the primary piston, and remove the snap ring.
2
Remove and discard the primary piston assembly.
7. Remove the secondary piston assembly.
1
Plug the rear outlet port and, if necessary, plug the brake pressure switch port.
2
Apply compressed air into the front outlet port, and carefully remove the secondary piston assembly and discard.
8. NOTE: If the brake master cylinder bore is damaged, a new brake master cylinder must be installed.
Use isopropyl alcohol to clean and inspect the brake master cylinder bore for damage.
Assembly
WARNING: Brake fluid contains polyglycol ethers and polyglycols. Avoid contact with eyes. Wash hands thoroughly after handling. If
brake fluid contacts eyes, flush eyes with running water for 15 minutes. Get medical attention if irritation persists. If taken internally, drink
water and induce vomiting. Get medical attention immediately.
1. Lubricate the new piston assembly seals. Use clean High-Performance DOT 3 Brake Fluid C6AZ-19542-AB or equivalent DOT 3 fluid meeting
Ford specification ESA-M6C25-A. Do not use oil as it will destroy the seals.
