What is the cause of the brake pads of the truck

Badly worn disc surface.

Yaw brake disc repair step.

1. First of all, the worn surface of the yaw brake disc is milled to remove the rough part of the surface and the depth of surface processing to ensure that the thickness of the yaw brake disc after processing is.

2. In order to ensure that the upper and lower clearance between the yaw brake disc and the yaw brake is within the range of 2-3mm, the upper surface of the yaw brake disc will be welded with a thickness of 8mm insert, the material of the insert is QT400, which is the same material as the yaw brake disc, which can ensure that the welding performance of the insert and the yaw brake disc is good, and the yaw brake disc is basically deformed after welding.

Brake failure is never good news as it can lead to major accidents. Therefore, ignoring the sound of the brakes will only make the problem worse.

1.Worn brake pads.

Brake pad wear is one of the reasons for the friction sound when braking, and if your brake pads are used for a long time, the backplate will gradually lose its material. This causes the metal to come into contact with other metals, creating a harsh noise. In addition, the rotor can rub the caliper and scrape the surface of the meal.

So, if you don't replace the brake pads right away, you can seriously damage the brakes. Also, the backing plate and caliper can destroy each other, causing grooves and damage.

2.Low-quality brake pads.

Many people think that buying low-quality pads is a great way to save money, but this is actually a bad decision. Low-quality brake pads often contain metal blocks that rub and scratch on the rotor surface, causing serious damage. So, if you are planning to replace your pads, choose a quality product from a well-known brand.

3.A solid object between the rotor and the caliper.

Components will get dust, and dust and dirt are normal. But sometimes, whether you press the brakes or not, small rocks or other solid objects on the road can get between the brake calipers and the rotor and create a brake grinding sound. The friction created by such an object can damage these parts.

4.Broken gaskets.

Brake pads make a frictional noise when they break, and the worn pads will come into contact with the braking system, such as the rotor, and when the metal is combined with other such metals, they will make a screeching sound from your braking system. Therefore, whenever the brake job is done, the gasket must be replaced. Sometimes, your repairman may avoid doing this because they want to get the job done quickly, so supervise them to serve you well.

This is the reason for this normal, frictional metal resonance, if you feel that the sound is unpleasant or uncomfortable, you can adjust the brake pads or polish the contact surface!!

The sound of rubbing metal, of course.

See if the brake pads are burned.

Hello! If the brake pads on one side of your truck's rear brake are particularly worn, while the other side is barely worn, there could be a few reasons:1

Unbalanced braking system: If there are certain faults in the braking system, such as insufficient braking air pressure and uneven braking force distribution, it will cause the braking system to lose balance and increase the wear of one side of the brake pad. 2.

Puncture or mistracking: If a tire punctures or mistracks during driving, it can lead to overuse of brake components, which can accelerate the wear of brake pads on that side. In this case, it is recommended that you have your tires inspected and replaced as soon as possible.

3.Brake pad material problem: If the material of the brake pads on both sides is different, or the rubber balance material of one side of the brake pad is relatively soft, then it will cause it to wear faster than the brake pad on the other side.

It is recommended that you contact a professional car repair shop as soon as possible to check and solve the problem. Maintenance personnel can find the specific cause of the problem by conducting a detailed inspection and test of the brake system, and take the necessary measures to avoid similar problems from happening again. <>

Abnormal brake noise: The brake pads may be stained with fine particles and foreign bodies, resulting in abnormal noise during braking, and the gap between the brake caliper and the brake pads is too large and too small, which is also easy to cause brake system noise.

On the issue of abnormal noise of automobiles, it is difficult for ordinary car owners to distinguish which ones are abnormal noises and which ones are reasonable abnormal noises. Only nearly 20% of the vehicles that went to the repair shop to detect abnormal noises really had problems. In the case of a model equipped with a turbocharged engine, there is a must be a difference between the sound and the sound of the naturally aspirated engine; Models with engine guards may also make noises due to friction; After some car owners come into contact with different cars, it is likely that due to their lack of understanding of mechanical knowledge, they mistake reasonable abnormal noise as a vehicle failure.

Therefore, learn to distinguish the abnormal noise of the car and avoid wasting time and energy.

Second, the identification of car noise is limited, the sound of the car is difficult to measure with special instruments, and the sound of the car can only be described and compared with the judgment of the sound in daily life. For example, the "rattling" sound made by the dry friction of the bearing, and the "clicking" sound similar to the small hammer hitting the cement floor made by the excessive valve clearance.

1. Correctly distinguish between normal and abnormal sounds.

The vibration of each mechanism in the work of the car will emit a variety of sounds, but the sound does not mean that the car is faulty, in order to avoid unnecessary disassembly, the first dull tomorrow must distinguish between normal sound and abnormal sound. The normal vibration sound of each system component (such as the noise on the surface of the engine), the impact sound of the gear when shifting, the air intake sound and exhaust sound of using gas as the working source, and the gear meshing noise are all normal sounds. Abnormal noise (abnormal noise) can be divided into slight noise, general noise and malignant noise according to the impact on the performance of the car.

Slight noise, such as the flashover sound of high-voltage electric leakage, the slight loose sound of rolling bearings, etc., the general volume is small, the degree of wear of the parts is not large, and there is no significant change for a long time, and this kind of fault can still maintain the normal operation of the car without repair.

3. When diagnosing abnormal noise, attention should be paid to creating good auscultation conditions and trying to eliminate the interference of other noises, so as not to affect the accuracy of judgment.

It is best to consciously amplify or reduce the sound, that is, use a screw or other metal rod as a stestological instrument to contact the sound part to amplify the sound, or use a single cylinder fire cut-off to reduce the sound to meet the diagnostic needs. The auscultation site should be kept quiet to minimize human interference.

The alarm plate will send out a sharp sound to prompt the replacement When the vehicle braking system usually has its own set of alarm system to warn the owner to replace the brake pad. When the brake pad is worn more than the specified alarm value, the alarm pad will emit a screeching noise to remind the owner to go to the maintenance shop in time to check or replace the brake pad.

If the brake disc is severely worn, then at the outer edge where the brake disc and the brake pad do not rub against each other, it will become a ring of bump relative to the friction surface, so there is a harsh sound.

3.There is a sharp and piercing sound when the new car applies the brakes, which is not a quality problem of the car.

The abnormal noise of the brake pad grinding brake disc is mainly due to the following reasons, namely: 1. It may be that the vehicle is shaking when stepping on the brakes at high speed. 2. It may be that the contact surface between the brake pad and the brake disc is not worn well.

3. It may be that the material of the brake pad is not good, which causes abnormal noise during braking. There are mainly the following methods to solve abnormal noise: 1. Do not vibrate after turning on the power supply, check whether the fuse of the electrical controller is dissolved, whether the electrical components are loose, and whether the plug and socket are in poor contact.

If the conveying speed is not required, the following three points should be noted: (1) Check whether the screws that fasten the elastic elements are loose. (2) Whether the spring blade is broken.

3) Whether the electromagnetic gap is too large, the distance between the electromagnet and the armature corresponding to the normal gap of the small vibrating disc is in the range of 0 5mm to 1 2mm The parallelism between the core and the working surface of the armature is not greater than that of the electromagnet coil The temperature is too high or the coil is burned, and there are 2 points: (1) The interval between the electromagnet and the armature is too large, and the coil is easy to burn. (2) If the electromagnet is suitable for full-wave vibration, the temperature will be high if it is used in the half-wave power supply.