Brake Booster - V8 S/C 5.0L Petrol (G2255054): Operation

The brake booster provides controlled power assistance to the brake pedal when pressure is applied. Power is obtained from the vacuum pump. The vacuum is applied to both sides of a flexing diaphragm, and by admitting atmospheric pressure to the rear diaphragm, assistance is obtained. If any failure occurs in the vacuum system, the 2 actuator rods will act as a single rod, allowing the brakes to function in the normal way. Although more effort required to operate the brake pedal.