Proportioning Valve

Install pressure gauges in master cylinder outlet ports equipped with proportioning valves. These gauges will measure hydraulic pressure to rear brakes. Install pressure gauges in remaining master cylinder outlet ports. These gauges will measure hydraulic pressure to front brakes. Depress brake pedal, and apply 853 psi test pressure to front brakes. Check proportioning valve outlet pressure. See PROPORTIONING VALVE TEST SPECIFICATIONS table. If outlet pressure is not as specified, replace faulty proportioning valve(s).

PROPORTIONING VALVE TEST SPECIFICATIONS

Application

⁽¹⁾ Split/Slope

Rear Brake Outlet Pressure

Escort & Tracer

300/34%

462-547 psi

⁽¹⁾	Split point is when proportioning valve changes rear brake pressure to prevent skidding. Slope is the pressure differential (percentage ratio) between front and rear brakes.