About the brake disc, these important knowledge to understand!

2019-09-20 12:04:42 432
Often a friend asks, if the brake disc rusts, will the brake fail? Is it time to change? But the problem is that the age of the car is not long, is it a quality problem? In fact, we often encounter the problem of brake disc rusting, but will it affect the brake, or is it a quality problem?





Why does the brake disc rust after a few years?



Many people do not understand why the brake disc rust, fear that it will cause a decline in braking performance. In fact, most of the brake discs of household brakes are made of cast iron, which is not rust-proof as the surface of the car body, but also exposed to the sun and rain for a long time. The working environment is bad, especially if parked for a long time, the surface is prone to some rust.

Normal brake disc rusting is a normal phenomenon, which is not necessarily related to quality. However, it still has some impact on the braking system, but there is no need to make a big move, these problems can be dealt with by the owners themselves.



Many people do not understand why the brake disc rust, fear that it will cause a decline in braking performance. In fact, most of the brake discs of household brakes are made of cast iron, which is not rust-proof as the surface of the car body, but also exposed to the sun and rain for a long time. The working environment is bad, especially if parked for a long time, the surface is prone to some rust.


Normal brake disc rusting is a normal phenomenon, which is not necessarily related to quality. However, it still has some impact on the braking system, but there is no need to make a big move, these problems can be dealt with by the owners themselves.


 Besides rusting, what problems should we pay attention to?



In addition to rust, which we can easily see, we should pay attention to two aspects of brake system inspection. The first is the thickness of the brake pad, the thinnest replacement limit thickness of the brake pad is about two or three millimeters, to this limit, it must be replaced.

At present, when the brake pads are too thin, the position of the instrument brake alarm lamp will be prompted, which is more convenient than self-examination. Vehicles without brake alarm need not worry, because the brake calipers will have a prominent position near the thinnest thickness, forming a brake abnormal sound to remind the driver.


If it is drum brake, you can listen to the scream of "iron rubbing" accompanied by a light brake, or check the position of the brake becomes higher, at this time the brake pad must be replaced immediately.

Another brake system check that needs attention is brake fluid. The brake fluid should be replaced regularly. All the brake fluid released from the system should be discarded and can not be reused. If the brake fluid is dirty, release and flush the whole system, then fill the main cylinder with new fluid. If there is always a shortage of brake oil for a period of time, it is 


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