What is the reason for the abnormal sound of the clutch when the manual transmission car is pressed?

There is an abnormal sound when the manual transmission car steps on the clutch, whether you have an abnormal sound under your feet or an abnormal sound in the gearbox.

If there is an abnormal sound under your feet, it is estimated that the lubrication is not very good, and you can solve it with some butter.

If it is an abnormal sound in the gearbox, it means that the clutch plate is damaged or seriously worn, or the clutch bearing is seriously worn.

Replace the clutch plates.

Hello, the manual transmission car has an abnormal sound when stepping on the clutch, in this case, it may be caused by poor clutch disengagement, it is recommended to check the clutch plate of the car.

There are generally two situations when there is an abnormal sound when stepping on the clutch: first, the sound of the clutch pedal is the sound of the clutch pedal shaft rubbing, just add some lubricating oil. Second, it is a swishing or rustling sound, and the separation bearing is broken and needs to be replaced.

The brake pads may be stained with fine particles and foreign bodies, resulting in abnormal noises during braking, and the gap between the brake calipers and brake pads is too large or 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. Models equipped with turbocharged engines are different; 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 method of car noise:

In practice, due to the limitations of working conditions, it is difficult to measure the sound of the car 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 "rattle" sound caused by the dry friction of the bearing, and the "click" sound similar to the small hammer hitting the cement floor caused 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, we must first distinguish between normal sound and abnormal noise. 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.

Manual transmission of cars.

Abnormal clutch sound.

The most likely source of this squeak is the clutch release bearing. Generally, it is wading through the water, and after a few days, there is a sound of stepping on the clutch. After wading, a series of reasons such as water ingress into the separating bearing, loss of grease, rust, dry grinding and so on are superimposed, resulting in damage to the separating bearing.

Replacing the separating bearing parts is not expensive, but the labor cost is a bit expensive. Far more than the cost of accessories.

Another possibility comes from the clutch master cylinder. But this probability is very low.

The reason for the abnormal sound of the clutch of the manual transmission car should be that there is a problem with the separation bearing, the separation bearing is worn, or the bearing. If the wear is severe, it will make an abnormal noise. When stepping on the clutch, the wind bearing is an Asian clutch pressure plate, so it will make an abnormal sound.

Hello. If there is an abnormal sound when stepping on the clutch, the general separation bearing is damaged. Need to replace the clutch, three-piece set.

The abnormal sound of the clutch of the manual transmission car is generally caused by the lack of oil damage of the separation bearing, which can be solved by replacing the separation bearing.

The clutch sound is generally caused by the damage of the flywheel bearing, and the clutch claw is seriously worn, and the clutch three-piece set needs to be replaced.

If the clutch is abnormal when the manual gear is stepped on, the clutch is disengaged and the bearing is broken, and the gearbox must be dismantled to be replaced.

If the manual transmission trolley steps on the clutch and has abnormal noise, the possibility of damage to the discharging bearing is greater, and the problem can be solved by going to a large auto repair shop to replace the clutch three-piece set.

Three-piece clutch set, bearings, pressure plate, friction plate.

There are too many reasons, you go to the repair shop to check.

If there is a problem with the clutch and you need to inspect and repair the transmission clutch parts, it is recommended that you go to a professional repair shop for inspection and repair in time.

The clutch is located in the flywheel housing between the engine and the gearbox, and the clutch assembly is fixed to the rear plane of the flywheel with screws, and the output shaft of the clutch is the input shaft of the gearbox. While the car is in motion, the driver can press or release the clutch pedal as needed.

Clutch. Installed between the engine and the transmission, it is an assembly directly connected to the engine in the drive train of the car. Usually the clutch is installed together with the flywheel group of the engine crankshaft, which is the component that cuts off and transmits power between the engine and the drive train of the car.

During the entire process from the start of the car to normal driving, the driver can manipulate the clutch as needed to temporarily separate or gradually engage the engine and the drive train to cut off or transfer the power output from the engine to the drive train. Its function is to make the engine and transmission gradually engage, so as to ensure a smooth start of the car.

The sound of the clutch when the car steps on it disappears, which may be due to the lack of lubricant in the release bearing, resulting in dry friction or bearing damage; There is no clearance between the release bearing and the inner end of the release lever; The oil and dust between the separation bearing sleeve and the conduit are seriously greasy or the separation bearing return spring and the pedal return spring are fatigued, broken and fall off, so that the separation bearing returns poorly.

Hello. If the clutch is in the opposite direction, it should be that there is a problem with the clutch disc or that the aging gap is large. If you don't step on the clutch, there is an abnormal noise, and it is the first time I have heard of it, so it is recommended to check it out, and there should still be a problem with the clutch.

1. Gently step on the clutch pedal, when the clutch release bearing and the release lever are in contact, there is an obvious "rustle" sound, which can be judged to be the clutch release bearing. In this case, the release bearing can be greased.

If it still rings after adding grease, it is the damage of the separating bearing, if the separating bearing has stagnation or the axial clearance is too large, the new bearing should be replaced. If the wear of the inner ring of the bearing is greater than that, and the entire bearing is idling on the separator sleeve, the bearing and the separating sleeve should be replaced.

2. Press the clutch pedal to make a "whoosh" metal friction sound. If there are ablation marks or sparks at the contact between the clutch release bearing and the release lever, it means that the clutch release bearing does not rotate or is damaged, and the bearing should be replaced.

3. When the engine is idling, the clutch has a "bang" sound, and the accelerator is stepped on slightly. There is no change in the sound, it may be caused by the breaking of the separation lever screw, and the damaged part should be replaced.

4. When the engine is idling, the clutch has a "gurgling" impact sound. The sound above medium speed weakens or disappears, and then step on it again.

When the clutch pedal is lowered, the sound also disappears, indicating that the clutch friction plate rivet is loose or the keyway of the driven disc is worn.

In this case, the bottom cover of the flywheel housing (or clutch chamber) can be removed, and when the engine is turned off, the transmission is put in upper gear, the clutch pedal is pressed, and the keyway is checked for clearance with the cone toggle disc. If the gap is large, it needs to be repaired or replaced with a new part.

5. If the clutch pedal is all lifted, there is noise or intermittent knocking sound. The reason for this may be that there is no clearance between the clutch release bearing and the release lever.

In this case, the free stroke of the clutch pedal is adjusted, i.e. there is no clearance between the release bearing and the release lever. It may also be that the return spring is soft, broken, elongated, falling off, etc., which causes the free sliding of the release bearing and the contact of the release lever, which should be repaired or replaced as appropriate.

Notes:

1. The clutch must be cleaned before installation to remove anti-rust grease and debris.

2. The clutch can be installed coaxially or sub-shaft, the axial direction must be fixed, the active part and the driven part are not allowed to have axial channeling, and when the sub-shaft is installed, the coaxiality between the active part and the driven part of the shaft should not be greater.

3. When the wet electromagnetic clutch is working, lubricating oil must be added between the friction plates.

4. When the tooth-embedded electromagnetic clutch is installed, it must be ensured that there is a certain gap between the end teeth, so that there is no grinding phenomenon during idling, but it shall not be greater than the δ value.

5. The electromagnetic clutch and brake are Class B insulation, and the normal temperature rise is 40. The operating temperature at the ultimate thermal equilibrium is not allowed to overspeed by 100, otherwise the coil and the friction part are prone to damage.

6. Power supply and control circuit, clutch power supply is DC 24 volts (except for special orders). It is obtained by three-phase or single-phase AC voltage through step-down and full-wave rectification (or bridge rectification), and the unregulated voltage and flat-wave require sufficient power. Half-wave rectifier power supply is not allowed.

Generally speaking, most of them are caused by the cracking of the steel ball that separates the bearing, and the bearing is broken. This is relatively common.

Another situation is that after the clutch pedal is pressed, the sound of Zhila Zhila is heard, similar to the friction sound of rubber, which is generally just the shaft of the clutch pedal, which loses lubrication, and the problem is solved after lubrication of this part.

Generally, there are two situations that cause abnormal clutch noise, most of which are the wrong way of operation of the owner.

Many car owners are accustomed to stepping on the clutch, after the gear, the foot still continues to step on the clutch pedal, maintaining such a habit for a long time, will cause damage to the clutch, and the clutch plate will wear, such abnormal noise is also mostly the abnormal sound of the clutch release bearing.

In addition, when the clutch pedal is stepped on, the clutch can clearly hear the abnormal noise; The moment when the pedal is relaxed, it is more obvious, and the main reasons for this situation are: the clutch pressure plate spring is broken or the release bearing is loose; clutch steel plate shattered; The clutch release lever is broken, worn excessively, or the release lever adjustment bolt is broken.

Most of the clutch release bearings have quality problems. This situation reminds the owner to go to the repair in time. Going for repairs in advance, maybe the owner only needs to replace the release bearing and guide bushing, but if it is delayed for a long time, it will lead to a series of things to be replaced, and the cost will be more expensive.

If the owner encounters this abnormal noise, do not panic too much.

First of all, you should keep a certain distance from the car in front, park the car in the appropriate position, tighten the hand brake, pad the triangle, and put the transmission in neutral position.

Repair, maintain and select cars, one-stop interpretation of car knowledge.

The main reason is the wear and tear of the moving parts of the clutch pedal or the lack of lubrication, 30,000 kilometers out of this sound, it should be poor lubrication, it is recommended to apply grease. This answer is from Easy Car.

It is estimated that 80% of the disconnect bearings are less oily, and the sound of the pedals is also possible.

There is a crunching sound but it doesn't affect the clutch and gear, right? Generally, the link mechanism of the clutch pedal lacks lubricating oil, go to the repair shop to find the master at each link point, drip some oil, and the sound is gone. When the car is cold in the morning, the link mechanism has a large gap and the hardness of the metal surface is relatively large, so there is no sound, and the sound will appear when the car is hot or the weather is hot at noon.

My car was also in this problem some time ago, and this is how it was solved.

If you step on the clutch abnormal noise, it is generally the clutch release bearing, and if you do not step on the clutch abnormal sound, it is generally the transmission one-shaft bearing.

If the disseparator bearing is broken, you don't need to change the clutch plate and pressure plate if you repair it, you can adjust it. If you don't change it, the jaw will wear faster. Go to the repair factory to check and determine what parts to replace, and repair it after confirmation.

If it is a loud sound, it is a failure caused by abnormal wear inside the clutch release bearing.

Summary. Hello, Car Master Mechanic is here to serve you. Attentive, careful, attentive, for you to answer the car fault problems, for you to find the corresponding problem solutions and maintenance methods.

We will provide you with a satisfactory answer to your questions, I hope this service can help you, if it is helpful to you, I look forward to your praise and attention. I wish you good luck and good luck in the Year of the Tiger, Hello friend, if you have this kind of malfunction, it is obvious that the sound caused by the internal separation of your gearbox and the damage of the bearing. If you have a solution, you need to replace the release bearing and replace the clutch three-piece set to solve your problem.

If the clutch release bearing is damaged, when you don't step on the clutch, it will make this noise when it turns inside, and when you step on it, it doesn't rotate, and the noise disappears. Replacing the clutch three-piece set can solve your problem, and the friend goes to the repair shop to repair it.

My car has a manual transmission, and if I don't step on the clutch, there is an abnormal sound, and when I press the clutch, it disappears, and the sound is like the wind whistling. What is the reason?

Dear, this question is up to me, it takes a little time to type, please be patient, thank you!

Hello, Car Master Mechanic is here to serve you. Attentive, careful, attentive, for you to answer the car fault problems, for you to find the corresponding problem solutions and maintenance methods. We will provide you with a satisfactory answer to your questions, I hope this service can help you, if it is helpful to you, I look forward to your praise and attention.

I wish you good luck and good luck in the Year of the Tiger, Hello friend, if you have this kind of malfunction, it is obvious that the sound caused by the internal separation of your gearbox and the damage of the bearing. If you have a solution, you need to replace the release bearing and replace the clutch three-piece set to solve your problem. If the clutch release bearing is damaged, when you don't step on the clutch, it will make this noise when it turns inside, and when you step on it, it doesn't rotate, and the noise disappears.

Replacing the clutch three-piece set can solve your problem, and the friend goes to the repair shop to repair it.

Thank you. You're welcome.