Whether it is a conventional car or a special vehicle, brake pads play a vital role in the vehicle, and the wrecker as a rescue vehicle, brake pads are more important, the quality of brake pads directly affects the driver's personal safety. Road wrecker can clean up accidents, faulty vehicles, and can be used as a rescue vehicle, its brake pads if there is a problem, it is likely to cause more serious traffic jams, delay clearance operations, may also cause traffic accidents. So we have to master some skills to replace the brake pads in advance to avoid accidents. Today I will teach you a few tricks how to judge the brake pad should be replaced. Pay attention to observe the thickness of brake pads, brake pads in the long-term use of the process, with the continuous friction of the brake, the thickness will become thinner and thinner, the service life of the general brake pads is about 5 years, but if it is a relatively poor vehicle environment and poor driving habits will shorten the service life of the brake pads. The brake pads of some vehicles are not easy to see, so we can let professionals help us check the brake pads when we do maintenance for the wrecker. Both ends of the brake pads have a raised mark, about 2.5 mm thick, which is the replacement limit of the brake pads, if the thickness of your vehicle's brake pads is fast to the limit position, it is necessary to replace the brake pads immediately. 
2. Listen to the sound to judge, when you tap the brake pads, if you hear a more sharp and harsh "sizzling" sound, indicating that the thickness of the brake pads has reached the limit, resulting in direct friction on both sides of the logo, be sure to replace the brake pads immediately. 3. Observe the groove, most of the brake pads are distributed on the small groove, which is the wear indicator. When the brake pads are worn and can not see the small grooves, it indicates that the limit has been reached and the brake pads need to be replaced immediately. 4. Touch judgment, brake pads are often used in the process of driving, so brake pads will often be worn, there will be some small scratches above, but if the scratches are deep, forming a shape similar to a small groove, when touching the edge of the groove with your fingers, it feels sharp, indicating that the groove is deep, then you need to replace the brake pads. 5 According to the dashboard indicator to judge, when the brake indicator on the dashboard is on, the vehicle brake system has a problem, at this time should check whether there is excessive wear of the brake pads, if excessive wear, it may be insufficient brake oil or the problem on the line led to the brake indicator light on, at this time it is best to go to the maintenance station to check. The problem of brake pads is a big problem, here Xiaobian reminds everyone, usually must observe more brake pads, problems should be dealt with in time to avoid serious consequences.
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