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Proportioning Valve

WARNING: This page is about a different car, the 2004 Mazda MX-5 Miata, 2003 Mazda MX-5 Miata, and 2002 Mazda MX-5 Miata. However, it is still accessible from the selected car via links, so may be relevant.

Connect 2 pressure gauges and adapters to brake pipes. See Fig 1 . Bleed brake system. See BLEEDING BRAKE SYSTEM  . Measure fluid pressure from master cylinder and to rear brakes. If not as specified, replace proportioning valve. See PROPORTIONING VALVE PRESSURE SPECIFICATIONS  table.

PROPORTIONING VALVE PRESSURE SPECIFICATIONS

Inlet Pressure - psi (kg/cm2 ) Outlet Pressure - psi (kg/cm2 )
569 (40) 526-612 (37-43)
850 (60) 626-740 (45.4-53.4)
Fig 1: Connecting Pressure Gauges To Proportioning Valve
G00303019Courtesy of MAZDA MOTORS CORP