Common faults and solutions for brake pads
Brake pads often have various faults during use, which in turn affects safe driving of the car. So what are the common faults in car brake pads? How to solve these problems? Today, the editor will discuss with you the common faults and solutions for brake pads, and I hope to help you.
First, the friction block slag or fall off
Dross
(1) If the color of the friction block has not changed and the slag is removed, it is a product quality problem and should be replaced with a new one.
(2) After the friction block is discolored, it will fall off or fall off. The reasons can be divided into the following:
The brake caliper does not return to position, and the brake caliper does not return for a long time, which may cause the brake pad temperature to be too high, causing the friction material to ablate and deteriorate, or the adhesive failure. In this case, the friction material turns red or yellow. It is not a product quality reason, but a new piece must be replaced and the brake caliper repaired.
2. long time brakes cause slag or fall off
In this case, there are more in the mountainous area, and secondly, there are more in the expressway; in the mountainous area, due to the steep slope, the experienced driver uses the brake to descend the slope, but the novice often brakes for a long time, which is easy. The film is ablated and slag is deblocked, and the color of the slag deblocking will also turn red or yellow.
In the event of an emergency, the brakes often lose their effect and must be braked continuously. This kind of long-term braking often causes the film to ablate and slag deblocking. The color of the film will also change to red or yellow.
Second, the brake pads are ringing
(1) Product factors
(2) Human factors.
1. The surface of the brake disc is flat but the new one is ringing
The first reason for this may be that the repairman has biased the brake pads. When removed, you can see that the surface of the brake pads is only partially scratched.
Processing method: You can remove and reinstall.
The second reason is that the size of the friction block of the same type of brake pad is inconsistent among the domestic manufacturers, especially the width of the friction block, and the dimensional deviation between the manufacturers can reach up to three millimeters. This results in a smooth surface of the brake disc, but a large-sized brake pad can also sound if it is attached to a brake disc that has a small brake pad.
Processing method: First CD, if you don't have a CD, you can drive for a period of time. After the traces match, it will not sound.
The third reason is that after a period of driving, it suddenly sounds. This is mostly due to the fact that hard objects such as sand and iron scraps on the road are caught on the brake pads when the brakes are applied. This situation is not only loud, but also easy to damage the disc. . However, when the inspection is removed, sometimes the foreign matter has fallen off or worn away.
Processing method: CD, if there is foreign matter on the film, it should be removed and then installed. In this case, it is easy to see that the wound plate only hurts one of the four surfaces of the two plates, but it is easy to incur a claim if the driver is not explained.
After a period of driving, it sounds, but it is not a buzzing sound, but a squeaking sound, which may be caused by loose attachments on the brake pads.
Handling: Retighten or replace the new piece.
2. Remove the original car and replace it with a new film.
At present, according to the actual situation, the original car brakes are more than 50% more likely to scratch the original brake discs, but because of the original car parts, and because the scratches are not sounded, 90% of the repair shops and The driver did not believe that the original car was injured.
Therefore, when replacing a new film, it is often not proactively checking whether the brake disc has scratches. When the new film is re-sounded, it is found that there are scratches on the brake disc, which often leads to the driver's request for a new piece of repair shop, dealer, and production. The factory compensates for the brake disc, which is a black pot that is obviously caused by human factors.
Handling method: When replacing the brake pads, you must first check the brake disc for scratches. If there are scratches, it is recommended to flatten the scratches or replace the new ones. If the driver does not agree, it should be indicated on the repair order and driven by the driver. Signed by the staff, this will avoid the driver's claim caused by the subsequent ringing or injury.
Three: brake failure
1. The new film on Gang'an is the brake failure. This is often caused by the grease on the surface of the brake pad when it is installed. This is not a product liability. After the removal, it is possible to detect the presence or absence of oil. Will be responsible, the driver can only change the new film.
2. The brakes fail after driving for a while. Most of this happens when the road area is water. When the water is over the puddle, the brakes are applied. The high temperature film and the plate will be quenched when it meets the cold water. A hard oxide layer is formed on the surface of the disk. The surface is hard and the material is normal. White turns blue or blue and red. In this case, the brake pads and brake discs must also be replaced. But it is not a product quality responsibility.
The above is about the common faults and solutions for brake pads. I hope everyone can understand the common faults and solutions of brake pads.