Brake as a performance index related to life safety, its good and bad we should always be vigilant.
In this issue, we summarize 5 possible causes of braking force decline for the reference of new car owners.
In the first case, the brake fluid hasn't been changed for a long time.
Brake fluid, also known as brake fluid, is a functional liquid that has a shelf life just like oil.
Generally speaking, the brake oil needs to be replaced once every two years, because some moisture and air will enter the brake oil for a long time, which will reduce the boiling point of the brake oil, and reduce the braking performance due to the high temperature rise of the oil in the emergency braking.
As for the number of kilometers, this should be according to the provisions of the maintenance manual.
Some cars are traded for 40,000km, others for 60,000km.
The quality of brake fluid used by different models is not the same, so it can not be generalized.
For safety reasons, Turbo personally suggested that the time and mileage should be the first to arrive.
Here also want to remind everyone, brake oil can not be mixed.
Different brands of brake oils may react when mixed, generating impurities, air and affecting braking force.
In the second case, brake fluid enters water and air.
This sounds the same as the first case, but it's not.
The first case is natural deterioration of the brake oil, while the second case is that water and air enter the brake oil because of human error or poor environment.
In the third case, the pumping performance of the vacuum booster pump is weakened.
Now, with the advent of direct-injection and turbo charging technologies, most cars are equipped with a separate vacuum booster pump to pump air into the vacuum booster, thus creating a vacuum.
But sometimes in the case of the engine load is relatively large, such as the summer when the air conditioning, the engine pumping strength will be weakened. In the fourth case, the wiring harness of the electronic vacuum booster pump burns out.
A car with an electronic vacuum booster pump can ensure the continuity and balance of braking force.
However, in some cases, electronic components are more likely to fail.
For example, on a rainy day, if the water level is high and your car rushes into the water, it may cause the electronic vacuum pump to overheat and scorch.
In this way, there is a lack of electronic booster pump power, resulting in insufficient vacuum, braking force weakened.
In the fourth case, the wiring harness of the electronic vacuum booster pump burns out.
A car with an electronic vacuum booster pump can ensure the continuity and balance of braking force.
However, in some cases, electronic components are more likely to fail.
For example, on a rainy day, if the water level is high and your car rushes into the water, it may cause the electronic vacuum pump to overheat and scorch.
In this way, there is a lack of electronic booster pump power, resulting in insufficient vacuum, braking force weakened.
Fifth case, brake main pump or sub-pump oil leakage.
If the brake main pump and sub-pump leak oil, it will cause the master cylinder pressure drop, weaken the braking force.
Therefore, we also pay attention to the daily maintenance of the brake system to ensure the tightness and purity of the brake pump.
It is recommended that you replace the brake pad or brake disc, incidentally check the return of the brake pump is normal.
In addition, when the wear thickness of the brake disc exceeds 2mm, the brake disc should be replaced in time.