The brake booster is an element that contributes to the safe driving of the vehicle. How to check the brake booster and what happens if this element fails? If you are interested in this type of issue, be sure to read our article.

Damaged servo – brake component failure symptoms

Before we move on to brake booster failure, let's determine what this component is actually responsible for. The servo strengthens the entire braking system; Thanks to this, using the brakes does not require as much force. The lack of a brake booster would mean that the stopping distance of the vehicle would be much longer , which in turn translates into a greater risk of collisions and other undesirable situations on the road. The servo is usually located under the vehicle's hood – from there it generates additional force that allows the machine to stop faster.

How does a servo work? This part is equipped with two parts separated by a membrane. If the driver decides to press the brake pedal, a valve between them immediately opens and air is sucked into one of them. The vacuum in the second part presses against the membrane ; a rod runs through its center, attached to the brake system assembly, and is also connected to the piston of the brake master cylinder. When you press the brake pedal, the diaphragm stretches the aforementioned rod and increases the pressure on the brake master cylinder piston. These two forces work together to rapidly slow down the car.

Brake pump failure – brake booster problems symptoms

This element is crucial in the context of security. . It is therefore worth being able to recognize the situation in which a failure occurs. Symptoms of a damaged brake booster include stiff brake pedal action and a high brake pedal position. Also quite characteristic is the prolonged braking of the vehicle, as well as the poor performance of the entire drive unit. All the symptoms mentioned should set off a warning light; However, the situation is particularly dangerous when the vehicle's stopping distance is longer. If the vehicle does not stop relatively quickly after pressing the brake pedal, then you should contact a mechanic as soon as possible.

There is also a method to check the servo yourself. To do this, pump the brakes several times. When starting the drive unit, simply press the brake pedal : if it feels completely stiff or its tension does not change at all, then the brake booster has almost certainly failed. This item will need to be replaced quickly.

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