Skip to main content

Illustration #1365

Vacuum valve Vacuum pipe from inlet manifold Air valve Return spring Diaphragm

A direct-acting servo is fitted between the brake pedal and the master cylinder. The pedal can work the master cylinder directly if the servo fails or if the engine is not running.

Explained in

    How the braking system works

    Most modern cars have brakes on all four wheels, operated by a hydraulic system. The brakes may be disc type or drum type. Read more

icon-search