Econoline E550 V10-6.8L VIN S (2003)
Brake Master Cylinder: Testing and Inspection
Brake Master Cylinder
1. Disconnect the brake lines at the brake master cylinder.
2. Plug the outlet ports of the brake master cylinder.
3. Apply the brakes. If brake pedal height cannot be maintained, the brake master cylinder has an internal leak and must be rebuilt or a new one
installed.
