Vehicle brakes should always maintain

Phenomenon: The car is moving, or continuous kicks foot brake, the brake pedal were riding in the end, brake suddenly failed.

Reason:

1.The total pump cup is broken or stepped over.
2.Brake pipe joints out of line or a serious rupture.
3.Pump cup is broken or stepped over.
Diagnosis: Hydraulic brake system to produce the reasons for poor performance of the brake, the brake pedal stroke generally, depress the brake pedal hard and soft feeling after the brake pedal when the brake pedal is increased stability and height to determine

1. When the brake pedal height generally too low, bad braking efficiency. Such as continuous feet or foot brake pedal height increased, and the braking efficiency improvement, the brake drum and the friction sheet gap or general pump piston and push rod is too large.

2. Maintain the braking pedal, if the height of slow or rapid decline, the rupture, the brake line somewhere joint sealing bad or pump the leather bowl sealing side, the return spring is too soft or broken, or the total pump leather, leather ring sealing side, the oil return valve and outlet valve is bad. The first step under the brake pedal, observe whether the brake fluid leakage. If the external normal, you should check the pump or pump failure.

3. Several foot brake pedal height, remains low, and in the second foot brake, feel general pump piston does not return, the brake pedal is a main pump push rod and the piston knock noise, is the total pump cup rupture or return spring is too soft.

4. Continuous brake pedal height kicks slightly increased, and a bomb sexy, indicating that the brake pipe penetrate the air.

5. Consecutive kicks, pedals were riding in the end, and felt no pedal reaction force, indicating that the master cylinder brake fluid reservoir chamber heavy losses.

6. Consecutive kicks brake pedal height is low and soft, is the total liquid storage chamber into the hole in the plug vent blockage.

7. A foot or both feet and brake pedal height, proper, but too hard bad braking efficiency. Gap should check the wheel friction film and the drum is too small. If the normal space, then check the drum wall and the situation of friction surface. Such as normal, then check the brake spring is excellent, general pump or pump cup is bloated, the piston and cylinder wall with is loose. Such as normal, it should then check the brake hose is not clear whether aging.

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