Power Brakes : Manual brakes were hard to press and required great effort. To eliminate this problem, power brakes were invented. Most power brakes use a vacuum power brake booster. By adding vacuum, the brake pedal is assisted relieving some of the pressure you actually have to press with your foot. Hydro-boost is another form of power brakes. By using the power steering pump, the hydraulic pressure is used in place of vacuum to help assist the brake pedal when it is being applied. Another style of power brakes is electronic assisted brakes. Here, an electric motor builds um hydraulic brake pressure and this is released as you press the brakes thus applying the brake pressure for you in stead of manually pumping it with your foot brake pedal.
Vacuum braking is the most common system. You may experience a braking problem if the vacuum hose is leaking or broken, the vacuum check valve is broken, the booster leaks vacuum, and or the vacuum pump is not functioning.
Hydro-boost braking can cause a problem if the power steering fluid is low, leaking or the power steering pump is not working properly. Usually, the driver will also feel the power steering not working properly as well.
Electric style braking has several components. A pump motor, accumulator, sensors and a computer all work together to give you brakes. The most common failure is the pump motor however, a computer scan can usually help isolate any braking problems with the electronic braking system.
Power brakes only work when the brake system is functioning properly. Remember, it assists the brakes so the brakes have to work. Often times, the brake system has a problem first such as a bad master cylinder. If this problem is ignored, it can damage the power braking system as well.
Guy’s Automotive repairs all types of braking systems. If you have a brake system problem, call Guy’s Automotive today to get them repaired right.