HS code correlation with quality standards

List of catalogs of this article:

• 1, Car rear wheel brakes are uneven
• 2, How often should the rear brake pads be changed
• 3, Why do the rear wheels of the car brake?
• 4、How often is it appropriate to change the rear brake disc
• 5, How to effectively prevent the rear brake of the car from getting stuck?

Uneven rear wheel brake of the car

1. In fact, uneven wear of the brake disc is normal. Don't worry too much, just use the car normally.The reason why the brake discs wear unevenly and even have grooves of different depths is not because of poor quality, but because of the material distribution of the brake pads. In the manufacturing process of brake pad friction materials, there is hard metal powder.

2. The speed of wear is mainly directly related to the material of the brake disc and brake pad, so it is possible that the material of the brake pad is uneven. If you often turn and brake, the left and right wheels are unbalanced, which will also lead to inconsistent wear. One side of the brake disc may be deformed. The brake sub-pump return position is inconsistent.

3. Causes and solutions of uneven wear of brake discs: caused by uneven braking force; when braking, the brake sub-pump will provide mechanical energy to the brake pads to generate braking force through expansion and contraction, and the braking mainly depends on the brake pads.

4. There are many reasons for the unevenness of the left and right wheels.First of all, the wear of the brake pads due to long-term use will lead to inconsistent braking force of the left and right wheels, resulting in brake deviation. Secondly, the failure of the brake system, such as the imbalance of the brake disc, will also lead to uneven braking force of the left and right wheels.

5. When the thickness is still 1/3 of the original, it should be replaced. Under normal circumstances, if the thickness difference between the two sides of the brake pads on the fixed brake calliper reaches 5mm, and the thickness difference between the two sides of the brake pads on the floating brake calliper reaches 0mm, it needs to be replaced.

How often should the rear brake pads be changed

1. Generally speaking, the replacement cycle of the brake pads is determined according to its service life , replace the front brake pads every 30,000-50,000 kilometers, and replace the rear brake pads every 60,000-100,000 kilometers.

2. What should I do after I find it? Shenyang Wantong Automobile School 2023-11-07 · Mingde and skill, the integration of knowledge and action. Follow Expand all brake pads should be replaced once between 30,000 and 50,000 kilometers. When the vehicle is used for more than 30,000 kilometers, you should regularly observe the brake pads, check the actual thickness of the brake pads, and make sure to replace them immediately after using them to the limit.

3. Theoretically, the car needs to be replaced every 50,000 kilometers. However, in the actual use of the car, the replacement time may be advanced or delayed.

4. Under normal circumstances, the rear brake pads should be replaced once every 60,000 to 80,000 kilometers of the vehicle.

5. How many kilometers should the brake pads be changed? The number of kilometers to replace the brake pads varies depending on the model and the material of the brake pads. Generally speaking, the front brake pads need to be replaced after driving 30,000-50,000 kilometers, and the rear brake pads need to be replaced after driving 60,000-100,000 kilometers.

Why do the rear wheels of the car brake?

1. Because when the car brakes, the center of gravity moves forward, and most of the weight of the car will affect the front wheel, so the quality of the front wheel brake directly affects the performance of the brake.And the rear-wheel brake is only an auxiliary effect on the front-wheel brake, which is relatively secondary.

2. Simply put, the pressure applied to the liquid of the brake master pump after we step on the brake pedal is equal to the liquid pressure at the brake disc piston, but because the pressure is equal to the pressure per unit area, as long as the area of the piston is increased, the pressure applied will increase.

3. Most of the handbrakes are to brake the rear wheels. The handbrake generally brakes on the rear wheels. Of course, it is not out of priority to the side sliding action of the driver. As for why most of the car handbrakes are rear wheels, I think it is a habit-following problem first.

How often should the rear brake disc be replaced

Under normal circumstances, the brake disc needs to be replaced every 50,000 to 80,000 kilometers.The replacement cycle of the brake disc is related to personal driving habits and driving conditions. The brake disc is a consumable part of the brake system. As the mileage of the car increases, the brake disc will continue to wear out. After the brake disc is worn to a certain extent, it needs to be replaced.

Car brake discs should be replaced once every 50,000 to 60,000 kilometers. The time to replace the brake disc needs to be judged according to the wear of the brake disc. Most cars need to replace the brake disc when driving 50,000 to 60,000 kilometers.

Under normal circumstances, the brake disc should be replaced every 60,000 to 80,000 kilometers. The brake disc is a consumable part in the automobile brake system. As the mileage of the car increases, the brake disc will continue to wear out. When the brake disc is worn to a certain extent, it needs to be replaced.

How to effectively prevent the rear brake of the car from getting stuck?

1. How to effectively prevent the rear brake of the car from getting stuck? The brake main cylinder leather bowl is stuck, which is caused by not returning to the position. Generally, it is caused by water or other impurities entering the brake system, or the system is not cleaned before replacing other brands of brake fluid, resulting in the blistering of the brake main cylinder leather bowl; the problem of the main cylinder leather bowl and the inner diameter of the main cylinder.

2. The solution includes: check whether there is a shortage of brake fluid in the brake fluid cup, and if there is less, add liquid; check whether the brake oil cup and brake oil pipe are leaking, and if there is, replace it; check whether the brake pad is seriously worn, and if the wear is serious, replace it; check the brake hub brake pad gap adjustment (normally 2-4 Mm).

3. Don't use other crowbars to press back hard, which is easy to cause the brake caliper guide screw to bend and make the brake pad stuck.After replacing the brake pads, be sure to step on the brakes a few times to eliminate the gap between the shoe pads and the brake discs. As a result, the first foot did not brake, which is prone to accidents.

4. The thickness and hardness of the brake pads directly affect the braking power of the car when braking. The thickness of the brake pad is generally 0.5-5 mm, which is easy to get stuck if it is too thin; if it is too thick, it will cause uneven braking force when braking, and it may also cause the brake pad to die when braking. In addition, in general, the thickness of the brake pad is best to be 2-3 mm.