Checking for hydraulic pressure
WARNING: This page is about a different car, the 2005 Mazda MPV. However, it is still accessible from the selected car via links, so may be relevant.
- When the engine is stopped (vacuum 0 kPa {0 mmHg, 0 inHg})
and the fluid pressure is within the specification, the unit is operating.POWER BRAKE UNIT FLUID PRESSURE SPECIFICATION - ENGINE NOT STARTED
Pedal force Fluid pressure Rear disc brake 200 N {20 kgf, 44 lbf 680 kPa {6.93 kgf/cm2 , 98.6 psi} min. Rear drum brake {8.06 kgf/cm2 ,115 psi} min. - Start the engine. Depress the brake pedal when the vacuum reaches 66.7 kPa {500 mmHg, 19.7 inHg}.
- If the fluid pressure is within the specification, the unit is operating.
- If the fluid pressure is not as specified, inspect for damage to the check valve or vacuum hose, and fluid leakage of the hydraulic line. Repair as necessary, and inspect again.
POWER BRAKE UNIT FLUID PRESSURE SPECIFICATION - ENGINE STARTEDPedal force Fluid pressure Rear disc brake 200 N {20 kgf, 44 lbf} 8,900 kPa {90.75 kgf/cm2 , 1,291 psi} min. Rear drum brake 8,830 kPa {90.04 kgf/cm2 ,1,280 psi} min.