Inspection method of brake pads: Measure with a brake pad measuring ruler. The thickness of the new brake pad is generally 1cm. If the brake pad is less than 3mm, it should be replaced. Usually you can see the general situation of the brake pads through the gap of the wheel hub with a flashlight. If the thickness of the outer brake pads of the caliper is less than 5mm, you need to remove the tires to check the brake pads on the inner side of the cylinder. Precautions when selecting brake pads and replacing brake pads: When choosing brake pads, you must look at the friction coefficient of the brake pads. The friction coefficient represents the performance index in the constant speed friction test. The friction coefficient of the brake pads of ordinary household cars is between 0.35-0.55. The larger the coefficient, the better the braking effect. The coefficient of friction is marked on the brake pad packaging. Attention should be paid when replacing: 1. The depth of the friction groove on the edge of the brake disc. If the depth is large, the brake pads need to be polished and the chamfer is polished to prevent abnormal noise. 2. When the brake pad is installed, the friction material should be in contact with the brake disc. If it is installed backwards, the back plate will contact the brake disc. There will be no brake or abnormal brake noise when installed. 3. The new brake pads with screws and accessories must be replaced with new ones, because there is thread glue on the new screws to prevent the screws from loosening. 4. After the brake pads are replaced, you should step on the brakes several times. After stepping on hard, check the brake oil level. Only when the oil level is normal can you start driving. And when driving, you must step on a few more brakes, so that the brake pads and brake discs are fully run-in, and the braking effect is the best. The hazards of the brake pads not being replaced in time: 1. Abnormal sound of the brakes, there is a low and loud rubbing sound when you step on the brakes, which is very harsh. This is the friction between the brake disc and the back plate, causing damage to the brake disc. 2. This is very serious, the brakes fail, and there is a dangerous situation without brakes.

Brake pads, as the most critical part of the car's braking system, are related to braking safety and speed. At the same time, the braking effect of the vehicle can also be reflected by the brake pads, but it is also used as the safest part of the car. One of the most frequent parts will wear out during long-term use. When the brake pads are replaced, abnormal noises will appear. This is the most common situation. The newly installed brake pads abnormal noises, are they not installed? good? The abnormal noise of Xinhuan’s brakes is caused by several factors. First of all, the first aspect is that the brake pads of the vehicle are not chamfered when they are installed. According to the structure of the brake pads, the brake pads are not structured. The surface looks flat, but in actual use, due to process and other issues, a right angle will be formed. When installing, the right angle around the side is not rounded, so it is still a right angle. This right angle will come into contact with the plate and produce abnormal noise. The second aspect is caused by the fact that the brake is not installed with a silent pad. For the general brake pad, a silent pad is wrapped around it. This silent pad can prevent the brake cylinder from directly contacting the brake pad when it is working. Direct contact will cause the sound of collision, and this is also a factor that causes abnormal noise of newly replaced brake pads. Summary: As a new brake, the abnormal noise is basically related to the later operation. When installing, you should pay attention to the chamfer. For the newly replaced brake pad, install muffler or muffler paste. You can avoid these situations when you travel.

As for the various parts of the car, as long as there is damage, it must be replaced in time, otherwise it is very likely to be dangerous when driving, but what makes many car owners feel distressed is not that they don’t want to change it but don’t know when to change it. It is the most suitable time. It would be a pity if the parts can still be used and replaced, but if they are not replaced in time, there may be danger. For example, today I will talk about brake pads. Many people will take a flashlight and look at the brake disc carefully when checking whether to replace the brake pads. Some car owners will step on the brakes for a while to see if the braking distance is exceeded. Standards. In fact, these methods are very troublesome. There is a particularly simple way to determine whether the brake pads need to be replaced, which can be judged by listening to the sound. If you hear such a sound when you step on the brakes, it is the harsh sound of the interior metal rubbing, and every time you step on the brakes, it will be accompanied by this sound, and this sound sounds like only metal rubbing in the car. Pure sound, it appears when you step on the brake, and there is no when you don't step on it. When you stop outside the car, the sound is sharper, just like the sound of metal scraping against the brake disc, then it means that the brake pads need to be replaced. Some cars think that this situation should be more like the sound of the brake disc being rubbed back and forth between the brake disc and the brake caliper after only a small part of the brake pad has been worn? Although it is indeed a figure of a metal sheet rubbing against the brake disc, it is not a figure that appears when the brake pad is about to wear out. In fact, the designer deliberately designed this phenomenon when designing. A metal friction strip is inserted at the place where the brake pads are replaced. This metal friction strip is usually useless, and it is basically covered by the brake pads. When the wear of the brake pads reaches the maximum, the brake pads The metal friction strip can no longer be covered, and the friction strip will follow. Therefore, when the brake pads should be replaced, the brake discs will rub against this friction strip, and a sharp sound will be generated to remind the car owner that the brake pads should be replaced. 　　Some people think that if such a loud noise occurs, the friction strip will not cause great damage to the brake disc? Will the brake disc be damaged by such friction over time? In fact, it will not cause such a result. The metal friction strip has been specially treated, and the brake disc will only have a sharp and louder sound when rubbing against it, but the brake disc will not suffer any wear, and the owner can rest assured. The use of metal friction strips is also a very useful tool for automobiles. This sharp sound is also deliberately designed by the designer, because some bold car owners do not want to replace the friction plate even if the friction plate is almost worn out and will continue to drive. With this metal friction strip, even if you want to continue to drive, I can’t continue driving, because the shorter the brake pads are, the louder the friction sound will be. If you continue to drive, not only will you be affected, people outside the car can also hear this sound, and no one wants to continue driving. If you want to eliminate this sound, you can only replace a new brake pad.

The brakes of a car are also called "brakes". They are very important in driving safety because you can never predict when an emergency stop is needed. Therefore, it is important to keep the brake pads in good condition. There is a great guarantee for our driving safety. In addition, we also need to maintain the car frequently, and the brake pads are something that needs to be replaced frequently. We all know that the brake pads of a car cannot be used for a lifetime. Both brake fluid and brake pads need to be maintained and replaced. Most of the brake pads gradually become invalid after 40,000 kilometers. However, in accordance with the actual situation, premature replacement will bring about There are extra costs and unnecessary expenses, but if you encounter these four situations, don't delay. 1. There is noise when the vehicle stops or just starts It is very common for a car to make noise when braking. It often occurs when the car starts or stops. This means that the dirt of the brake pads and the wear of the brake pads are uneven. If there is only noise, the braking performance will not be affected. It can be restored by simple cleaning and use. If you hear loud squeaks and metal scratches, it means that the brake pads have worn out seriously. At this time, you should change the brake pads first. 2. The brake pedal will become soft when braking. If the brake pedal is softer than usual when braking, it is often due to insufficient brake pressure. This situation is very dangerous. It is necessary to step on the brake pedal harder to stop the car. The braking also takes longer and longer distance. The reason for this situation is generally due to air leakage in the calipers, brake cylinders and other locations. 3. The steering wheel shakes when braking First, make it clear that the steering wheel shakes abnormally during braking. The brake pedal shake may trigger the ABS system. The two need to be identified. The steering wheel shake during braking is actually a common phenomenon, especially in cars that are 5 years old or more than 50,000 kilometers. , The brake disc is abnormal and unevenly worn, which has a great influence on the braking performance at high speed. It can be solved simply by replacing the brake disc. 4. The vehicle deviates when braking When the brake pipe is damaged or the oil supply is uneven, if you feel the brake pad and brake pedal are difficult to return, it may be due to brake fluid contamination or installation and adjustment problems of the brake system. If this happens, it is very dangerous. Please try to avoid sudden braking. , Stop slowly and ask for help at the first time. With the development of science and technology, when the brake system fails, more and more cars display warning lights on the dashboard, but most cars do not have such a function, and most of the accidents are still due to "speeding". And the "brake" is two major causes. If you find the above four conditions, don't drag it anymore.