1. Check the locations of all connections, as well as the brake calipers and brake mounts on which the wheel brake cylinders are located.
2. Brake hoses must not be wet or swollen. Otherwise, they must be replaced.
3. The brake pipes are covered with a layer of plastic to protect against corrosion. If this protective layer is damaged, then corrosion can begin. Therefore, never clean the pipelines with a screwdriver, sandpaper or wire brush, but use a cold cleaning agent for this.
4. If the protective coating is damaged, then it is necessary to apply a layer of anti-corrosion primer.
5. Pipelines with corrosive stains, as well as flattened ones, must be replaced.
6. Are the safety caps on the bleeders in place? They are available on all front brake calipers and, accordingly, on the brake shields of the rear drum brakes.
7. You can check the pressure in the brake mechanism yourself: strongly press the brake pedal with your foot.
8. The pedal should not fall after a few minutes at full load, otherwise one of the seals in the main brake cylinder is faulty.
9. Due to a leaky sealing collar, the level of the brake fluid in the reservoir will not decrease, and the pressurized fluid, bypassing the piston of the main brake cylinder, enters the non-pressure side.
10. Minor leaks in the piston seals of the brake cylinder can only be determined by a precise pressure test in a workshop.
Note. Recommendation: Brake hoses are very sensitive to petrol, diesel, oil and petroleum. They cannot be varnished. Only means of anticorrosive protection of the bottom of a body are safe.