Inspection method of brake pads, inspection of brake pads

1) Check whether the thickness of the brake pads meets the standard range of the maintenance manual (the wear limit is.

2) Check whether there are grooves, hardening, cracks and oil stains on the friction surface of the brake pads.

3) Check whether the wear of the inner and outer brake pads is consistent.

<> "Inspection of brake pads.

1.If the brake pads have just been replaced, there must be a certain run-in period, which is generally 300 kilometers.

2.The thickness of a new brake pad is generally around the level, and the thickness will gradually become thinner as the friction continues to be used in use. Professional technicians suggest that when the thickness of the brake pads is observed by the naked eye, there is only 1 3 thickness left (about about 1 3 thickness, the owner should increase the frequency of self-inspection, ready to replace at any time.

3.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.

4.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.

5.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.

There is no strict replacement interval between brake pads according to the car environment and driving habits, and they should be considered for replacement after driving about 60,000 kilometers. When the naked eye observation finds that the brake pads are thin, the technician should be asked to check during maintenance, because there will be errors in the naked eye observation, and the professional repair station is more rigorous than the naked eye observation through the caliper.

People can't live without cars. Now that more and more people are buying cars, the performance of the car is naturally important. However, you must be able to stop the car at critical moments.

The braking system is crucial in the safety system of the car. If something goes wrong with the braking system, the consequences can be severe. Brake pads are a key component of the braking system.

After using it for a period of time, there will be some problems with the brake pads that affect the braking effect. So, how should the brake pads be inspected to see if they need to be replaced? Next, let's take a look at how to inspect brake pads.

Generally speaking, the life of a pair of brake pads is between 18,000 km and 60,000 km. The life of the specific brake pad is related to the driver's driving habits, driving environment, brake pad quality, vehicle weight, etc. There are many factors that affect brake pads, and the life of brake pads varies greatly.

If we know how to test brake pads, this will ensure our driving safety.

How to inspect brake pads.

1.Look at the brake pad situation from the braking force.

If you press the brake pads deeper than before and feel that you can't stop properly, it is likely that the brake pads are worn and thinned. At this time, it is necessary to check the brake pads more carefully and replace them if necessary, so as not to affect the braking effect.

2.Pay attention to the sound of brakes.

When braking, you can pay attention to the sound of braking. If you hear the "sizzling" sound of the iron plate rubbing against the iron plate when braking, it means that the wear degree of the brake pad has reached the limit and needs to be replaced at this time. At the same time, when this happens, the brake disc will also be affected, so it is necessary to check it together.

3.In addition to the above two methods, you can also check if the brake pads need to be replaced by observing the thickness of the brake pads. This method is more intuitive.

As the number of brakes increases, the thickness of the brake pads will become thinner and thinner, and the braking effect will also decrease. Generally, the thickness of the newly bought brake pads is about one-third, and if you find that the thickness of the brake pads is only one-third of the original, you must replace them in time.

In addition, there are some precautions for the daily inspection and maintenance of brake pads.

1.Under normal driving conditions, check the brake pads every 5000 kilometers, not only the remaining thickness, but also check the wear state of the brake pads, whether the wear degree on both sides is the same, whether the brake pads are free to return, etc. Any anomalies must be dealt with immediately.

2.When replacing, it is best to replace the brake pads provided by the original parts, so that the braking effect between the brake pads and the brake disc is the best and the wear is minimal.

3.When replacing the brake pads, a special tool should be used to prevent the guide screw of the brake caliper from bending.

4.Maintain good driving habits, concentrate on driving, and decide whether to apply the brakes or not according to the changing situation.

Brake pads play a key role in braking effectiveness, so it's important to check, maintain and replace brake pads regularly. It is worth mentioning that the wear and tear of many brake pads is caused by the improper braking habits of the owner, especially some novices, who still need to know more about when to step on the brakes.

When the thickness is still 1 3 of the original, it should be replaced. In general, if the thickness difference between the two sides of the brake pads on the fixed brake caliper is reached, the thickness difference between the brake pads on the floating brake caliper needs to be replaced.

Supplement] When the following four situations occur, the brake pads should be replaced in time:

1. When the thickness of the brake pad is less than the minimum maintenance standard allowed by the vehicle manufacturer (generally when the thickness is still 1 3).

2. When the wear alarm switch on the brake pad has been alarmed.

3. When the brake pads are contaminated by oil or grease.

4. When the brake pads have abnormal noise when braking.

1. Brake pad inspection

Regardless of any braking system, the brake pads (disc) or brake shoes (drum) are ultimately used to make the brake pads or brake shoes (drum type), so the thickness of the brake pads or brake shoes should be checked regularly. When it is found that its thickness is close to or less than the minimum thickness specified by the manufacturer, it should be replaced immediately. While checking the brake pads, it is also necessary to check the wear of the brake disc or brake drum, such as dents on the contact surface, to timely disc or drum to ensure the contact area with the brake pads, and to improve the braking force.

Second, brake fluid inspection

1) Before checking the brakes, carefully wipe the mud and dirt off the main cylinder so that nothing dirty falls into the oil storage tank. Remove the state fasteners (usually pins) and covers. For cylinders without a scale, the liquid level should be kept 6 mm from the top of the cylinder, and if there is a scale, just keep the liquid level higher than the scale.

2) If you find that the oil level has dropped, immediately check whether there is any leakage in the brake oil circuit.

3) If the brake fluid is dirty, drain and flush the whole system, then fill the main cylinder with new fluid.

4) Brake fluid should not be reused, and all brake fluid that has been drained from the system should be discarded.

5) If the master cylinder needs to be refueled, ** enter the heavy-duty brake fluid that meets the DOT3 or DOT4 specifications. Be careful not to put brake fluid on the paint, as it is very corrosive and can ruin the topcoat.

6) If there is a constant shortage of brake fluid for a long period of time, and you are always adding it, then it is obvious that there is something wrong with your brake system, and you should check it.

7) The brake fluid will fail after a long time due to the absorption of moisture in the air, so it is necessary to replace the brake fluid regularly according to the manufacturer's regulations, preferably once a year.

8) Clean, high-quality brake fluid is essential for safety and good braking system function, and you should buy the best quality on the market'Brake fluid.

9) In the project of maintaining the brake system, it is most important to check the brake fluid level regularly, at least once a month, and the more times it is, the better.

10) The color of the brake fluid can also see the problem, the brake fluid should not be too dark, nor should it look like it has been burned. If that's the case, then there's a problem, but it doesn't happen very often.

If you find that the braking efficiency or sensitivity of the handbrake is not ideal, it can usually be solved by adjusting the operating copper cable of the handbrake. There is an adjustable compensation mechanism at the junction between the bottom of the handbrake handle and the copper cable (generally covered by the interior parts), and the length of the brake copper cable can be stretched by loosening the lock nut with a wrench.

The inspection method of brake pads is as follows: 1. Look at the thickness of the brake pads. Generally, the total thickness of a new brake pad is about or so, and if the thickness of the brake pad is lower than or equal to, it has reached its critical point of wear, indicating that the brake pad needs to be replaced; 2. Feel the change in strength when you step on the brakes.

If you always feel very strained when you apply the brakes and are not as sensitive as before, or when you feel that the pedal position becomes lower and the brake pedal travel becomes longer during emergency braking, the brake pads must be checked or replaced as soon as possible; 3. When the brake pads are pressed, the sound is different from the past. For example, there is a metal grinding sound when you tap the brake, or a sharp metal scraping sound. In this case, the break-in period of the new brake pads is excluded, indicating that the brake pads are in abnormal condition, and even have exceeded the wear limit.

Each brake pad will have a raised wear limit mark, a mark is generally about the thickness of the mark, and if the brake pad has worn below, it must be replaced immediately.

<> "How to check car brake pads.

Automobile brake pads are the key components of the automobile braking system, and their service life and state are related to driving safety. If you find that the brake pads are badly worn or in poor condition, they need to be replaced in time.

So, how do you check your car's brake pads? How do you replace your car's brake pads?

1. Check the thickness of the brake pads to observe the thickness of the brake pads: when the tires change seasons or car maintenance, the thickness of the brake pads can be checked visually. If the brake pads have worn down to the required minimum thickness, they need to be replaced with new ones.

Observe the wear of brake pads: You can check the wear of brake pads with tools such as micrometers or pens. If the brake pads are worn unevenly, or if there are visible cracks in the edges of the brake pads, they need to be replaced with new ones.

Observe the color of the brake pads: the normal use of the brake pads is brown, if you find that the brake pads have turned black or other colors appear, it is clear that the brake pads have been overheated and need to be replaced in time. Second, the replacement of automobile brake pads.

Determine when to replace the brake pads: When the brake pads are badly worn, have worn to the specified minimum thickness, or have severe wear and damage, they need to be replaced with new ones.

Prepare tools and materials: The tools and materials you need to prepare to replace brake pads include micrometers, wrenches, screwdrivers, lubricating oil, new brake pads, etc. Remove the old brake pads:

First you need to remove the tires and then remove the brake pads. When removing the brake pads, you need to remove the brake calipers, then remove the brake pads, and pay attention to the safety card of the brake pads while removing them. Replace the brake pads with new ones:

Once the old brake pads have been removed, the brake calipers need to be cleaned and the new brake pads are fitted to the brake calipers. When installing, you need to pay attention to the contact between the new brake pads and the brake disc to ensure that the installation is firm and smooth. Installation & Testing:

Once you have replaced the brake pads with new ones, you need to reinstall the brake calipers and then test them.

During the test, it is necessary to pay attention to the braking effect and the normal operation of the braking system. There is any abnormal situation that needs to be investigated and dealt with in a timely manner. It should be noted that it is best to replace the brake pads by professionals, because the brake pads are a key component of the car's braking system, and if they are not installed properly or there are problems, it will affect driving safety.