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Home >> Ford >> 2004 >> Excursion 6.8 S, 4WD >> Repair and Diagnosis (Single Page) >> Brakes >> Anti-Lock Brakes >> Brake System - General Information -- Excursion & F250-F550 Super Duty >> Diagnosis And Testing >> Brake System >> Component Tests >> Brake Master Cylinder

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 replaced.