The role of the rear brake disc.
The main role of the rear brake disc is to help adjust the speed in the corner and tighten the lane.
The rear brake disc plays an important role in the automobile braking system, especially in the case of adjusting the speed in the corner. When the driver finds that the speed is too fast after entering the corner, he can slow down by gently pressing the rear brake while holding the accelerator steady. This mode of operation can maintain the original tilt Angle of the body at the same time, slightly reduce the speed, so as to tighten the lane and avoid the problem of bending. This way of using the rear brake does not require the difficult action of greatly lowering the body in the corner, so in some cases, the rear brake has become an effective tool to adjust the speed and maintain the stability of the lane.
In addition, the rear brake disc works together with the front brake disc to ensure that the vehicle can safely slow down or stop under various driving conditions. Although the front brake disc usually carries the greater braking force, the role of the rear brake disc cannot be ignored, especially in cases where the vehicle speed and direction control need to be balanced. What's wrong with the rear brake
The causes and solutions of abnormal brake sound are as follows:
1, there are pebbles or water film between the brake disc and the brake pad. When the vehicle is driving, there may be small sand particles entering the middle of the platter and the platter, and sometimes there will be abnormal noise due to friction.
Solution: Clean up the foreign matter between the brake pad and the brake disc in time.
2, brake disc wear serious. The speed of wear is mainly related to the material of the brake disc and brake pads, so the uneven material of the brake pads is a possibility.
Solution: A new brake disc is needed.
3. The repairman installed some brake pads. When removed, you can see only local friction marks on the surface of the brake pads.
Solution: Reinstall the brake pads.
4, the oil in the booster pump is too little, and the friction is too large.
Solution: Add booster pump oil to the car to reduce friction.
5. The spring sheet falls off and the movable pin is worn. Compression spring due to corrosion caused by the main reason for the compression spring surface tissue is corroded, caused by.
Solution: Reinstall the spring plate and replace the movable pin.
6. Brake disc screws fall off or are seriously worn. The abnormal braking sound may be caused by too tight assembly between the brake caliper and the brake disc.
Solution: Go to the 4S shop to replace the brake disc.
7, the brake disc is not run in. The new brake pads also need to be run in to better integrate with the old ones.
Solution: Brake pads need to be run in with the car.
8, brake pipe rust or lubricating oil is not clean. Problems with the car guide, rust in the brake guide or dirty lubricating oil can lead to poor return.
Solution: Clean or replace the brake pipe and replace the lubricating oil.
9. Slow braking speed when starting. When the brake pedal is slowly released, the engine has enough power to drive the car forward, but the brake is not completely released, so the moving wheel is stuck by the brake system will naturally emit abnormal sound, which is normal.
Solution: Start the car and release the brake pedal.
10, hydraulic tappet wear or system pressure relief. If the noise disappears quickly, or after the engine temperature rises, it is not a big deal, you can continue to use. If the car stops for half an hour and clicks, or the heater clicks, it is more serious.
Solution: First measure the pressure of the lubrication system. If the pressure is normal, it is basically a hydraulic tappet failure, and it is necessary to repair the hydraulic tappet at the 4S shop.
The rear brake disc replacement cycle is not absolute, it is affected by driving habits, road conditions, vehicle type and many other factors. Under normal circumstances, the rear brake disc can be replaced after 60,000 to 100,000 kilometers.
In addition, the degree of wear of the brake disc is also an important factor in determining whether it needs to be replaced. When the thickness of the brake disc is reduced to a certain extent, or there is obvious wear or scratches on the surface, it is necessary to replace the brake disc in time.
In order to ensure driving safety, the owner should pay attention to the maintenance of the brake system in daily driving, avoid excessive use of the brake, in order to extend the service life of the brake disc and brake pads. If you are not sure whether the brake disc needs to be replaced, it is recommended to consult a professional car maintenance personnel in time.
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