1. Hot cars work
After starting the car, it is the habit of most people to warm up a little. But whether it is winter or summer, if the hot car begins to have strength after ten minutes, it may be the problem of loss of pressure in the transmission pipeline of supply pressure, which will cause the brake force to be unable to be supplied in time. If this happens, it is necessary to check whether the connection between the vacuum booster tube of the brake master pump and the engine is loose.
2. The brakes become soft
Brake softening is the abnormal weakening of braking force, this failure usually has three reasons: the first is that the oil pressure of the branch pump or the total pump is not enough, there may be oil leakage; The second is brake failure, such as brake pads, brake discs; The third is that the brake pipeline leaks into the air, if the pedal height is slightly increased when a few feet brake, and there is a sense of elasticity, indicating that the brake pipeline has infiltrated the air.
3. The brakes harden
It doesn't work if it's soft. It might work if it's hard. If you step on the brake pedal, feel both high and hard or no free travel, the car is difficult to start, and the car is laborious, it may be that the check valve in the vacuum storage tank of the brake power system is broken. Because the vacuum is not up to it, the brakes will be hard. There is no other way to do this, just replace the parts.
There may also be a crack in the line between the vacuum tank and the brake master pump booster, if this is the case, the line must be replaced. The most likely problem is the brake booster itself, such as leakage, a step can hear the sound of "hiss", if this is the case, then you have to replace the booster.
4. Brake offset
Brake offset is commonly known as "partial brake", mainly because the brake system left and right pump on the brake pad uneven force. In the process of driving, the brake disc rotation speed is fast, the difference between the uneven pump action and the rapid friction is very small, so it is not easy to feel. However, when the vehicle is coming to a stop, the difference between the uneven action of the pump is obvious, the fast side of the wheel stops first, and the steering wheel will deflect, which may require the replacement of the pump.
5. Tremble when you hit the brakes
This situation mostly appears in the old car body, because of wear and tear, the surface smoothness of the brake disc has been out of alignment to a certain extent. Depending on the situation, choose to use the lathe disc process grinding, or directly replace the brake pad.
6. Weak brakes
When the driver feels the brake is weak during the driving process and the braking effect is not normal, it is necessary to be alert! This weakness is not too soft, but no matter how to step on the feeling of insufficient braking force. This situation is often caused by the loss of pressure in the transmission pipeline that provides pressure.
When this happens, it is generally impossible to solve it yourself, and the car must be driven to the repair shop for maintenance and timely treatment of the problem.
7. Abnormal sound occurs when braking
Abnormal brake sound is the sharp metal friction sound emitted by the brake pad when the car is running, especially in rain and snow weather, which frequently occurs. Generally, abnormal brake sound is caused by the thinning of the brake pads leading to the backplane grinding the brake disc, or the poor material of the brake pads. When there is abnormal brake sound, please check the thickness of the brake pads first, when the naked eye observes the thickness of the brake pads has only left the original 1/3(about 0.5cm), the owner should be ready to replace. If there is no problem with the thickness of the brake pads, you can try to step on a few brakes to alleviate the abnormal sound problem.
8, the brake does not return
Step on the brake pedal, the pedal does not rise, there is no resistance, this phenomenon is the brake does not return. Need to determine whether the brake fluid is missing; Whether the brake pump, pipeline and joint are leaking oil; Whether the main pump and sub-pump parts are damaged.
Post time: Mar-13-2024