Skoda Haorui manual transmission, hanging reverse gear occasionally has abnormal noise, slight vibra

Sometimes the reverse car always can't hang the reverse gear, and you can often hear the "galala" sound or vibration I don't know why. We took a look at it and found that many car owners have a lot of inaccuracies in the use of manual transmission reverse, so let's take a look at how to use manual transmission reverse correctly. The structure of the reverse gear I believe that friends who have driven the manual transmission model know that many manual transmission vehicles will have a reverse gear locking device, which needs to be unlocked before the reverse gear can be hung up, which is to prevent the vehicle from mistakenly hanging into the reverse gear when moving forward, and causing great impact on the transmission gear, resulting in damage to the parts.

The locking mechanism of the reverse gear is generally locked by the error-proof baffle. The way to hang the reverse gear There are different designs for the operation mode of the gear on different models, and there are three ways to unlock the reverse gear, which are traditional, pull-up unlocking, and press-type unlocking.

There are also some special unlocking methods, such as the reverse unlocking mode key of the manual transmission of the Buick Encora, which is similar to the button of the automatic transmission. There is also a manual transmission like BMW, the reverse gear is on the left side of the first gear, if you need to hang the reverse gear, you have to turn the gear lever to the left, pause and then push it to the left one level to reverse gear. After introducing the locking mechanism, let's talk about the gear in reverse.

For family cars, the reverse gear is generally a straight tooth wheel structure, the main reason is that the structure is simple and the manufacturing cost is low. Because the car is completely stationary when the reverse gear is engaged, there is no speed difference between the gears, so there is no need to use the diagonal tooth wheel and synchronizer parts, and the chance to use reverse gear is much less than that of forward gear, so it is not a big problem to use straight tooth wheels. Of course, the reverse gears of the manual transmission equipped with the higher models are also designed with synchronizers and diagonal teeth wheels, which is to improve the comfort when reversing.

At the beginning of the article, I mentioned that when the owner hangs the reverse gear, there is often "abnormal noise or vibration, which is caused by the non-standard action when the reverse gear is hung, resulting in the lack of meshing between the shift fork and the reverse gear lock ring." If the teeth are often beaten, the crown of the gear will be rounded, and the occlusion between the gears will not be complete, and often when this operation is carried out, the more bald it is, the more bald it is, resulting in a vicious circle. If the gear bite is not complete, it will cause a slight vibration after the gear is hooked, and it is easy to fall out of gear, and then the transmission needs to be overhauled.

Hope it can help the landlord!!

Hello, it may be that the clutch pressure plate is not working.

Check the clutch for wear.

Summary. This phenomenon occurs, this is mainly the sound of the shift solenoid valve in the gearbox when it is working, which means that when the gear is changed, the solenoid valve in the gearbox will work, and this phenomenon will appear in the process of switching. This one doesn't have much of an impact and works fine.

This is the only way to do this, and it has no effect on the gearbox.

The Skoda Octavia reverse parking gear has a bang+ sound.

Hello, I have seen your inquiry, please wait for a moment and answer it for you immediately.

This phenomenon occurs mainly because the shift solenoid valve in the gearbox is working when the chain circle sounds, which means that when the gear is changed, the solenoid valve in the gearbox will work, and this phenomenon will appear in the process of switching. This one doesn't have much of an impact and works fine. This phenomenon will only be present, and it will have no effect on the concept of this gearbox scale.

Insufficient lubricating oil, or dirty or deteriorated lubricating oil, etc., deteriorates the lubrication state of gears and bearings, causing the gears to heat up and produce abnormal sounds during transmission.

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 turbocharged engine, there is a must be a difference between the sound and the sound of a 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 they lack their own understanding of mechanical knowledge, so they can distinguish the abnormal noise of the car and avoid wasting time and energy.

How to identify the sound of a car:

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.

What does it mean when the rings ring in winter? Is it tire noise or? Generally, check whether the suspension upper seat or brake system is interfering.

If it is loud at low speeds, change the tires, and the Michelin noise is low. It is best to do a four-wheel alignment before replacement.

Whether the bearing is damaged, or the steering pin.

1. The engine has abnormal noise.

Symptom description: There is a lot of abnormal noise in the engine compartment, and most people also judge it to be the abnormal noise of the engine compartment by the sound**, which is usually a metal screeching sound or a howling sound.

Solution: The abnormal engine noise indicates that the technical status of a certain mechanism of the engine has changed. It is mainly caused by excessive wear and tear of some parts or improper assembly and adjustment.

Some abnormal noises can still predict that the engine will be damaged accidentally, so when the engine has abnormal noise, it should be repaired in time to prevent the fault from expanding.

It should be reminded that if it is an abnormal noise in the engine, most of the owners will not be able to solve it by themselves, and it is best to send it to the factory for maintenance.

2. There is abnormal noise in the gearbox.

Symptom description: If there is a "rustle" sound inside the gearbox while the car is driving, and there is no more after pressing the clutch or accelerator, there will be a whistle-like sound when changing gears.

Solution: There are many transmission parts, and the reasons for the sound are more complex, so we should pay attention to whether it is related to a specific speed, such as some planetary teeth that sound at about 50km h.

Whether it is related to certain gears, which is very important for judging the failure of the transmission, if a certain gear sounds, it must be related to the components that affect the transmission of the gear; If all gears sound, it is often a common meshing shaft failure or a lack of oil in the transmission. Whether it is related to specific actions, such as increasing and decreasing gears, starting, rapid acceleration, sharp deceleration, turning, etc., are effective means to judge abnormal noise, among them, changing speed and direction are particularly important for judging the rear axle fault.

If the abnormal noise of the transmission is obvious, it is recommended to send it to a professional repair shop to check the faulty parts, and then replace them.

3. There is abnormal sound of wear.

Symptom description: When driving on the accelerator or brake, there is always some abnormal noise in a certain part of the body, the sound is not loud, and it does not affect normal driving, but it always makes people worry a little about the failure of the body.

Solution: The abnormal noise of the door is mainly caused by the lack of lubrication, but it is necessary to judge whether it is the position of the door hinge or the glass regulator, door lock mechanism, handle mechanism, etc. inside the door. In the case of door hinges or limiters, special door hinges and slide grease can be used, while special door attachment grease is used for lubrication of glass regulators, door locking mechanisms, handle mechanisms, etc. inside the door. In terms of brand selection, try to choose the commonly used brands in 4S stores, such as German Marty, Kluber, Tiger Head Hotolube, Fox, etc.

It is not advisable to use engine oil or ordinary butter, it will freeze in winter, and the harmful smell will affect your health.

You need to hold on to the lift.

Hello, the shock-absorbing top glue is broken and needs to be replaced.

This belongs to the normal new car gear jerky, there is no synchronizer in reverse gear, he is geared. After the run-in period, it will be fine.

The speed when reversing is not fast, and some "abnormal noises" that may be "difficult to hear" may be easier to hear at this time, such as the abnormal sound of the door (loose hinges, loose wear, etc.), and the abnormal noise of other structural parts.

Abnormal noise inside the transmission body, which depends on the actual specific situation, loose body maintenance, the owner is not familiar with the situation is recommended to hand over the after-sales maintenance.

In the case of manual transmission, there is a possibility that the clutch system may partially cause "abnormal noise". Such as master pumps, sub-pumps, and transmission mechanisms.

Clutch release bearings or guide bearings of flywheels can also cause "squeaks".

The "abnormal noise" caused by the manual gear changing mechanism.

Chassis parts, especially such as the connection of some plastic parts, rubber sleeves, ball joint parts such as rubber, etc., due to aging, cracking, looseness and other phenomena caused by the phenomenon of "squeak" abnormal sound.

It is not excluded that there is an abnormal sound caused by the looseness of the structural parts of the car seat and the loosening of a certain part.

It is not excluded that "abnormal sound" or "abnormal noise" caused by other aspects is not excluded.

The act of moving a motor vehicle backwards is reversing. It also refers to people "reversing" in the middle of their trips, that is, changing from one car to another.

Before reversing, you should see the situation behind the car, estimate the reversing route, and determine whether the front of the car will hit obstacles during the reversing process. Especially when the steering wheel rotates widely, the turning radius of the steering wheel of the car is greater than the turning radius of the rear wheel, and the amplitude of the front part of the car is also large when reversing, so we must pay attention to avoid scratching the front of the car. This method is more suitable when parking on the right side and reversing requires longer distances.

If the rear of the car needs to travel to the right rear, then the steering wheel should be turned to the right; Conversely, the steering wheel is turned to the left, which is consistent with the steering operation when the car is moving forward.

Do not keep looking at the back of the car when reversing, and on the premise of confirming the safety of the rear of the car, you should observe the left and right side mirrors from time to time, pay attention to the distance between the obstacle and the body, and use the steering wheel to correct the position of the body when it is retreating.