For car owners, brake failure is a very terrible problem. Especially in the process of high-speed driving, it is no exaggeration that once the brake fails, cars will be destroyed and people will die. In fact, in the daily car use process, through many details, the owner can also judge the problems of the braking system, but these details are easy to be ignored by the owners.

1. Partial braking.

To put it mildly, the steering wheel will always deflect more or less to one side when the brake is applied and the vehicle is about to stop. The reason for this phenomenon is the uneven force of the left and right wheel cylinders of the braking system.

When the vehicle is driving, this kind of partial braking is not easy to be detected, because at this time, the speed of the brake drum or brake disc is relatively fast, the friction with the brake pad is also very fast, and the difference of uneven wheel cylinder force under high-speed friction is very small. However, when the vehicle is about to stop, this difference will become obvious, because the uneven force will make the stopping time of the wheels on both sides different, and the steering wheel will be biased to the side that stops first. Under such circumstances, it is necessary to replace the cylinder in time.

2. The brake does not return.

The so-called brake does not return, that is, when the owner releases the brake pedal, the pedal cannot rise independently, and the pedal has no resistance. In case of this phenomenon, it is necessary to check whether the return spring and brake caliper are damaged, whether the brake fluid is missing, whether there is oil leakage at the brake wheel cylinder, pipeline and joint, and whether the master cylinder, wheel cylinder and other parts are damaged.

3. The car shakes when braking.

In general, this phenomenon has a high probability on old vehicles, which is mainly caused by the eccentric wear of the brake drum / brake disc. In short, the surface of the brake drum / brake disc is uneven or severely worn. If this phenomenon occurs on some vehicles with low age, it is often due to the unqualified quality of the brake drum / brake disc, or the deformation of the brake drum / brake disc caused by the owner pressing the brake hard under the continuous braking for a long time. In this case, it is recommended that the owner directly replace the severely worn parts.

4. The braking force cannot be provided immediately after the vehicle starts.

The braking principle of the braking system is that the engine provides pressure to push the brake pad to hold the brake drum, or push the caliper to clamp the brake disc. Generally, the vehicle can have braking capacity after starting. However, some car owners found that their vehicles can not provide braking until they have been hot for more than ten minutes. In this case, it is mainly due to the pressure loss of the pressure transmission pipeline, which makes it unable to provide braking force. Check whether the interface between the vacuum booster pipe of the master cylinder and the engine is cracked or loose.

5. Brake deviation.

When stepping on the brake, the vehicle deviation is also a common fault. In the process of vehicle driving, the owner consciously steps on the brake in an emergency, so the vehicle cannot decelerate in a straight line, but deviates to one side, so it needs to correct the direction after the avoidance is completed.

Because this phenomenon is relatively obvious, it can attract the attention of many car owners, but it often occurs repeatedly after maintenance, and even cannot be improved under multiple maintenance. As the vehicle deviation is not serious, some car owners will eventually be tired of maintenance.

In this case, the owner should first eliminate the problem of tire pressure and wear, because when the tire pressure or wear degree on both sides is quite different, the friction on both sides is very different, resulting in braking deviation.

The gap between the left and right brake arms is too large, especially when the brake arm is not adjusted automatically, which will lead to the difference between the left and right brake arms.

Check the braking torque. When the braking torque is different, it is also easy to cause braking deviation, such as different braking air pressure, different friction loss of braking system, oil stain on brake pad or brake drum / brake disc, etc.

The above contents are for your reference only, and the specific problems should be analyzed according to the actual situation. For example, the brake drum, brake disc, brake pad and caliper of the vehicle are the key components on the axle, and have high requirements for material, strength, wear resistance and heat capacity. Especially for trailers, due to the large bearing capacity and more complex transportation road conditions, the requirements for axles and parts are higher than ordinary vehicles.

It is recommended that car owners still choose products dedicated to trailers, because regardless of the material, design or production process, they will fully consider the use environment and needs of trailers. They are stronger, more wear-resistant, higher heat capacity, less prone to softening or deformation, and durable for a long time, which can fully avoid jamming, stumbling and eccentric wear.

It is worth noting that some car owners choose maintenance free axles, which are maintenance free ≠ inspection free. Although the maintenance cycle is long, car owners still need to do a good job in daily inspection, especially the braking system, in order to better ensure safety.