Raise the car.
Clean the brake pipe.
Attention: The brake pipes are covered with a layer of plastic to protect against corrosion. When this layer is damaged, corrosion occurs. Therefore, do not use wire brushes, emery cloth or a screwdriver for cleaning.
Check the lines from the brake master cylinder to the wheel cylinders using a carrier. The master brake cylinder is located in the engine compartment under the brake fluid reservoir.
Tubes must not be bent or pinched. They should also be free of rust and scuffs. Otherwise, replace the damaged section of the pipeline.
The tubes are connected to the working cylinders of the wheels on the moving parts of the car by brake hoses. The hoses are made of a material that can withstand high pressure, but over time become porous, swell and are damaged by sharp objects. In such cases, they must be replaced immediately.
To establish damage, the hose should be bent by hand in different directions. Do not twist the hoses, observe the color coding!
Turn the steering wheel left and right from lock to lock. In this case, the brake hoses should not touch the car parts.
Connection points for tubes and hoses must not be wet.
Caution: If the reservoir or seals are wet, this is not necessarily a sign of a defective brake master cylinder. Rather, the liquid leaked out through the vent in the reservoir cap or through the cap seal.
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