How to look at the wear of car brake pads, how to check the wear of brake pads

When the thickness of the brake pad becomes thinner, it is necessary to replace the brake pad, the normal brake pad is centimeter thick, if it is found that the wear is only centimeter, it proves that the brake pad is not suitable for continued use. Secondly, most of the cars will remind the car on the dashboard whether the brake pads are seriously worn, whether they need to be replaced, when the warning light is on, the owner will check whether the brake pads are seriously worn. In addition, when there is an abnormal noise when braking, and it does not subside for a long time, it proves that the brake pads have worn to the point of being almost unusable.

In addition, if you find that the braking effect has decreased, it also means that the brake pads have a high degree of wear.

There are two kinds of development, the first is that you don't need to remove the tires, look at the thickness of the brake pads in the car, then you can use a flashlight at this time, under normal circumstances, it is not less than two millimeters is just normal use, and there is a situation that the tires are removed, the brake pads are all removed, and then they are checked. Also check it out, the brake pads have a wear limit of two millimeters. In other words, it should not be less than two millimeters, and if it is less than two millimeters, it is recommended to replace it directly.

You can check this first, if it needs to be replaced, there is no way, because the brake material is different, and the speed of wear is also different.

How to judge the wear of electric vehicle brake pads? As long as you use this method, you will know immediately.

Brake pads, also known as brake shoes, are consumables that will gradually wear out in use, and must be replaced when worn to the limit position, otherwise the effect of braking will be reduced, and even cause safety accidents. Brake shoes are life-threatening and must be treated with care.

Under normal driving conditions, every 5000 kilometers of the brake shoe is inspected, not only to check the remaining thickness, but also to check the state of the shoe wear, whether the degree of wear on both sides is the same, whether the return is free, etc., and the abnormal situation must be dealt with immediately.

Brake shoes are generally composed of two parts: iron lining plate and friction material, and you must not wait for the friction material part to wear out before replacing the shoes. For example, the front brake shoes of the Jetta have a thickness of 14 mm, while the limit thickness of the replacement is 7 mm, including more than 3 mm of iron lining and nearly 4 mm of friction material. Some vehicles have a brake shoe alarm function, once the wear limit is reached, the instrument will alarm to prompt the shoe to be replaced.

The shoes that have reached the limit of use must be replaced, even if they can be used for a period of time, it will reduce the effect of braking and affect the safety of driving.

When replacing, the brake pads provided by the original spare parts should be replaced, only in this way can the braking effect between the brake pads and the brake disc be the best and the wear and tear should be minimal.

When replacing the shoes, a special tool must be used to push the brake cylinder back. It cannot be hard pressed back with other crowbars, which can easily cause the brake caliper guide screw to bend and make the brake pads stuck.

After replacement, be sure to step on the brake a few times to eliminate the gap between the shoe and the brake disc, resulting in the first foot without braking, which is prone to accidents.

After the brake shoe is replaced, it needs to be run in for 200 kilometers to achieve the best braking effect, and the newly replaced shoe must be driven cautiously.

Brake pads are made up of two parts: a metal base plate and a friction pad. The brake pads work by the friction pads, as long as you pay attention to the thickness of the friction pads, you can understand the wear of the brake pads.

Some brake pads will have a groove in the middle, if you find that the groove is no longer obvious or worn out, this brake pad must be replaced.

Brake pads play a decisive role in the braking effect of the car, here is also an introduction to you, how to see the degree of wear of car brake pads?

1. Thickness: Under normal circumstances, the thickness of the new car brake pads is about centimeters, and the owner can directly observe the brake pads in the tires on the edge of the tire hub to judge, and if you can't see it, you can turn on the mobile phone flashlight to take pictures. If the thickness of the brake pads is less than 5 mm, it needs to be replaced.

2. Distance: When the car brake pads are used for a long time or need to be replaced, it will affect the braking effect of the car, so if the distance of the car brake is too long, it means that the brake pads need to be replaced. In addition, if it is accompanied by a harsh metallic sound when braking, it means that the brake pads have been worn out more severely.

3. Dashboard: Nowadays, some car brands have added a reminder about the braking system on the dashboard, so if there is a problem with the car piece, the relative position on the dashboard will light up the fault light, and the owner can replace it according to the prompt.

Brake pads will directly affect the braking effect, if the brake pads are seriously worn and not replaced in time, it may affect the owner's emergency braking, resulting in accidents.

Many car owners find that they have problems with the brakes of their cars, but they don't know if the brake pads of the car are too worn, so how to check the wear of the brake pads?

Normally, the front brake pads of a car wear out faster than the rear brake pads, and if the owner finds that the brakes of the vehicle have the following conditions, the brake pads need to be replaced.

1. The owner can remove the brake pads for inspection, if the brake pads are found to be thin, the brake pads need to be replaced, the thickness of the normal brake pads is centimeters, if it is less than centimeters, it needs to be replaced in time.

2. The system of the vehicle will have a prompt to replace the brake pads, and the owner can replace the brake pads of the car after seeing the prompt.

3. If the vehicle makes a harsh metal friction sound when braking, it means that the brake pads are seriously worn and need to be replaced in time.

4. If the owner finds that it is difficult to step on the brakes when stepping on the brakes, and the braking distance is obviously longer, it means that the brake pads are seriously worn.

The braking system is generally composed of two main parts: the brake control mechanism and the brake. The brake control mechanism produces the braking action, controls the braking effect, and transmits the braking energy to the various parts of the braking system, and the brake is the part that generates the force that hinders the movement or movement trend of the vehicle.

If you look at the gap between the brake pads and the brake disc, you can see the degree of wear of the brake pads.

1. The brake pads are seriously worn, the brake pads are divided into two kinds of induction wires and without induction wires, and when the brake pads are worn to the limit position, the induction line will automatically connect to the circuit, and then the fault light will be lit up. Brake pads need to be replaced;

2. The liquid level of the brake fluid is too low, and the lack of brake fluid will also be accompanied by a significant lack of braking force, and even the loss of braking force will occur in serious cases. In this case, the warning light will turn on. As long as the brake fluid is replenished in time;

3. Oil leakage and false alarm of the brake system. It directly affects the technical performance of the car, resulting in the waste of lubricating oil and fuel, consuming power, affecting the cleanliness of the car, and causing environmental pollution. The fault light will be lit and the gasket or oil seal needs to be replaced.

If the braking system fails, it will affect the driving safety, and it is necessary to check and repair it in time. The braking system of the automobile is composed of a vacuum booster pump, a brake master cylinder, a brake cylinder, a brake pad, and a brake disc. In order to ensure the safe driving of automobiles, increase the average driving speed of automobiles, and improve transportation productivity, special braking mechanisms are provided on various automobiles, and such a series of specialized devices are called braking systems.

The main function of the braking system is to slow down or even stop the car that is moving, to keep the speed of the car driving downhill stable, and to keep the stopped car still.

Listen to the sound of the car starting.

The methods of judging the degree of wear of brake pads are: visual inspection method, sound listening method, wheel removal inspection method, odor method, and indicator inspection method.

1. Visual inspection method.

This is the simplest and most common way to check, simply lift the vehicle, remove the wheels with hand tools, and directly check the degree of wear of the brake pads. The thickness of the brake pads should be between 6-12 mm, if it is less than 6 mm, the brake pads should be replaced.

2. Listen to the sound method.

When driving at low speeds, the degree of wear of the brake pads is judged by listening to the sound. If there is a noise during braking, it means that the brake pads have been severely worn and need to be replaced.

3. Wheel removal inspection method.

If there is no condition to lift the vehicle for visual inspection, the wheel removal inspection method can be used. Simply remove the tyre and observe the wear of the brake pads by looking close to them. Similarly, if the thickness of the brake pads is less than 6 mm, the brake pads need to be replaced.

4. Peculiar smell method.

When the brake pads are worn to a certain extent, they will emit peculiar smells, especially when driving at high speeds and emergency braking. If you feel the smell of blackening or burnt in your vehicle, it's time for the brake pads to be replaced.

5. Indicator inspection method.

Some high-end vehicles will have an indicator on the brake pads, when the brake pads are worn to a certain extent, the indicator will sound a warning or the indicator will light up to remind the owner to replace the brake pads.