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Brake noise is a very troublesome problem, brake abnormal sound for many reasons, whether it is a new car or a car may cause brake noise, in the end why the brake noise? Let's take a look
Why is the brake abnormal sound? what is the reason?
During braking, the brake cylinder applies a force F to the brake disc through the brake pad and changes the rotating brake disc from motion to standstill. At this time, there is a relative speed V between the brake pad and the brake pad. F × V = vibration frequency, the sound is caused by vibration. Here is the concept of a critical value, that is, when the vibration frequency is higher than the critical value, we will hear the brake noise.
Brake system is the more common fault brake noise, the failure of many owners have seen before. General brake noise is the vehicle driving the brakes, the brake system will issue a sharp metal friction, the sound often appear after the rain.
If this happens mostly because the brake pads appear thinned backplane brake pads, brake pads hard, foreign body brake pads will cause abnormal conditions, so when the brake noise should first check the brake pad thickness, Thickness no problem Meng foot brakes may ease the problem of abnormal sound.
Why is the brake abnormal sound? what is the reason?
Brake noise is a very headache.
First of all, you have to distinguish the sound of abnormal noise, is screaming, or muffled, or slurredly called.
1 If it is screaming, first check is despise the brake pads almost run out (alarm sound). If it is a new film, then check whether there is any foreign body caught between the brake disc and film.
2. If it is muffled, brake calipers are mostly problems, such as pin wear, spring off and so on.
3 · If it is a scream, then the problem is more, calipers, brake discs, brake pads may have problems. If the sound is continuous, we must first check whether there is drag brake, calipers will result in poor reset disc and the friction for a long time, under certain conditions will be issued abnormal sound. Then check whether there is any card into the film between the disc into the foreign body. If it is a new film, it depends on the brake disc has no groove, because the local friction will lead to abnormal sound. If the disc is no problem to consider whether the brake pads are too hard, or silencer installation error.
If it is braking, it will sound too much brake pads are too hard.
Taken together, brakes are brake calipers, brake discs brake three to complete the three, there may be abnormal sound. But often people blame the problems on the brake pads.
What causes abnormal brake sound?
Brake abnormal sound main reasons are the following:
1, the new car running-in, brake pads which is a very important part of the run, usually after running hundreds of kilometers, to feel the brake will be more comfortable;
2, the new brake pads also need to wear together to be able to better with the old disk, just put on the time, will feel hard braking, usually need to open hundreds of kilometers before they feel better;
3, the vehicle driving, there may be a very small sand into the middle of the film and disk, and sometimes due to friction, abnormal sound, which generally do not need maintenance, running a small grain of sand out on the All right;
4, there is no good run-in and abnormal noise, the owner simply ran up the brakes, so you can run in a short time brakes, but this will make the brake pads wear more powerful, that is equal to reducing the brake pads Life, therefore, it is recommended to run for a period of time to observe, do not go to artificially wear brake pads;
5, the fixed disc brake disc is missing or damaged, can also cause brake abnormal sound;
6, brake system failure, which requires inspection and maintenance of.
We all know the role of brakes, so in the choice of brake pads must pay attention to the material, although not perfect, but not too soft. Too soft will affect the brake when stepped on. Now know the brake sound and the solution if Xiao Bian said useful, then we should pay attention to us