Servos

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FAQs Apply for Trade Credit
The ability to brake safely is vital for you as a driver. So a functioning brake servo allows the driver to do just that. If the servo is not working correctly then the driver must apply much more pressure to the brake, which compromises yours and any pedestrian’s safety. Also known as the brake booster, they help the driver by reducing the braking effort on their part. Practically all vehicles with hydraulic braking systems will use servos when braking. They contain a vacuum that increases the braking force you apply with your brake pedal, which it then transfers to the master cylinder to provide the increased braking force. You can order your new car brake servo online today for delivery to your home, or if you need it in a hurry you can make use of our free click and collect service. If you need any advice on which brake servo is the right one for your vehicle, then why not call into your local Halfords store and one of our team will be happy to help you choose. Interest-free credit is available.

Brake Servo FAQs

How does a brake servo work?

It sits between the brake pedal and the master cylinder. When you press the pedal, the servo uses vacuum pressure from the engine to give you extra force, so the brakes bite harder without you having to stamp on the pedal.

What are servo brakes?

It’s just another way of saying a braking system that uses a servo (booster) to help apply the brakes. Nearly all modern cars have them.

What does a brake servo do?

Its only job is to make braking easier. Without it, you’d have to press much harder to slow the car down.

How do you test a brake booster?

With the engine off, pump the brake pedal a few times until it feels stiff. Then, hold the pedal down and start the car. If the servo is working, the pedal should drop slightly as the engine vacuum kicks in. If it doesn’t, the booster may be faulty and needs checking.