Ford Mustang/Cougar 1964-1973 Repair Guide

Metering Valve



On some vehicles equipped with front disc brakes, a metering valve is used. This valve is installed in the hydraulic line to the front brakes, and functions to delay pressure buildup to the front brakes on application. Its purpose is to reduce the front brake pressure until the rear brake pressure builds up adequately to overcome the rear brake shoe return springs. In this way, disc brake pad life is extended because it prevents the front disc brakes from carrying all or most of the braking load at low operating line pressures.

The metering valve can be checked very simply. With the car stopped, gently apply the brakes. At about 1 inch of travel, a very small change in pedal effort (like a small bump) will be felt if the valve is operating properly. Metering valves are not serviceable and must be replaced if defective.