Expedition 4WD V8-4.6L SOHC VIN 6 (1997)
Brake Proportioning/Combination Valve: Description and Operation
Brake Master Cylinder Fluid Control Valve
PURPOSE
The brake master cylinder fluid control valve regulates the hydraulic pressure in the rear brake system. It is located on the brake master cylinder
and is screwed into the rearmost outlet port. When the brake pedal is applied, the full brake pressure passes through the brake master cylinder fluid
control valve to the rear brake system until the valve's split point is reached. Above its split point, the brake master cylinder fluid control valve
begins to reduce the hydraulic pressure to the rear brakes, creating a balanced braking condition between the front and rear wheels to minimize
rear wheel lockup during
In Case Of The Front Brake System Malfunction - the brake master cylinder fluid control valve has a bypass feature which allows full
hydraulic pressure to the rear brake system.
