Explorer 2WD V6-245 4.0L (1994)
Brake Master Cylinder: Component Tests and General Diagnostics
Brake Master Cylinder Reservoir Checking and Filling
Brake fluid level in the brake master cylinder reservoir should be between 4mm (0.16 inch) below the MAX line on the side of the brake master cylinder
reservoir and the MAX line. If brake fluid is low, the red brake indicator will illuminate. To add brake fluid, clean and remove anti-lock reservoir cap
and pour clean brake fluid into the top of the brake master cylinder reservoir. Fill to specification mentioned above. Use Heavy-Duty Brake Fluid
C6AZ-19542-AA (ESA-M6C25-A) or Dot 3 equivalent. If brake fluid has to be added often, check all hydraulic connections for leaks.
Non-Pressure Leaks
The only part of the brake system that could have a brake fluid loss that did not appear when the system is under pressure is the brake master cylinder
reservoir area. Brake fluid loss could be caused by a missing or poorly fitted brake master cylinder filler cap, from a punctured or otherwise damaged
brake master cylinder reservoir, by a missing or damaged brake master cylinder filler cap gasket, or at the sealing grommets between the brake master
cylinder and the brake master cylinder reservoir.
The brake master cylinder reservoir grommets are not separately serviceable and must be replaced with a new brake master cylinder reservoir.
