Navigator 2WD V8-5.4L SOHC VIN L (1999)
5. Remove the brake master cylinder fluid control valve).
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.
