Two types of brake boosters are common today:
The vacuum brake booster uses negative pressure to distribute braking force, which is generated by the intake tract in the engine or by a vacuum pump. In contrast, the hydraulic brake booster uses a hydraulic pump that is driven by the engine.
Brake boosters only work when the engine is running. If the engine is switched off and you are being towed, for example, pure muscle power is again required for braking.
Due to age-related wear, a brake booster can become leaky and thus no longer function correctly. This is especially noticeable when the brake pedal is more sluggish and braking thus becomes more difficult. To test whether the brake booster is defective, there is a simple way to find out:
With the engine switched off, depress the brake pedal several times in succession until it becomes sluggish. The existing vacuum is then used up. Now start the engine with the brake pedal depressed. The brake pedal should give way if the brake booster is OK. If it does not, it must be replaced. Likewise, there is a defect if the pedal wants to come up by itself after a short time without you reducing the brake force. Then the diaphragm of the brake booster is leaking and it must be replaced.
However, the symptoms of a sluggish brake can also be due to a defective vacuum pump or a broken vacuum line. Therefore, before replacement, first check which part is actually defective, as this will be reflected in the amount of work required and the cost of materials.
To replace a brake booster, it is generally also necessary to remove the brake pedal, brake lines, master cylinder and vacuum lines. Thus, the brake fluid can also be changed in the same context.
If you want to buy a brake booster, you should use high-quality branded products. This is the only way to ensure a high accuracy of fit, as these products meet the requirements of the vehicle manufacturer. Likewise, branded items have a long service life, so they do not need to be replaced again for a long time. Leading suppliers of brake boosters include:
From these two manufacturers you will find suitable offers in our store. To do this, it is best to select your vehicle. Then you will be shown the corresponding products. In addition, you will also find brake force regulator in this category. The brake force regulator is a control valve that ensures that the rear wheels do not lock during braking and the vehicle is thus kept stable in the track. It is usually mounted directly on the master brake cylinder.
If you need help picking out the right brake booster and brake force regulator, feel free to contact our customer service with the 17-digit VIN number.
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