The abnormal noise of the gearbox is mainly caused by the loose bearing and the abnormal meshing between the gears. Common causes of abnormal noise of automatic transmission:

1. Failure to maintain the automatic transmission in time after water ingress will cause a series of automatic transmission failures. Such as oil leakage, abnormal noise, impact and other faults.
2. The automatic transmission oil will thicken if it is not replaced for a long time.

Table of contents
• 1 What is the reason for the abnormal noise of the gearbox
• 2 Reasons and solutions for abnormal noise of gearbox

1 What is the reason for the abnormal noise of the gearbox

The abnormal noise of the gearbox is mainly caused by the loose bearing and the abnormal meshing between the gears.
Common causes of abnormal automatic transmission noise:

1. Failure to maintain the automatic transmission in time after entering the water will cause a series of automatic transmission failures. Such as oil leakage, abnormal noise, impact and other faults.
2. If the automatic transmission oil is not replaced for a long time, it will thicken, and it will fail after a long time. There is no protective layer between the parts, and there is direct friction, which will aggravate the wear of mechanical parts, and in severe cases will damage the planetary carrier, differential and other components of the automatic transmission, resulting in abnormal noise.
3. Use low-quality transmission oil, low-quality or fake transmission oil, which has poor temperature resistance and is easy to oxidize, causing sludge and oil residue, blocking the filter screen and lubricating oil channel of the automatic transmission, increasing the friction of the internal parts of the automatic transmission, and producing abnormal noise.
4. Bearing wear or damage: When the bearing is worn, its clearance will increase, and the matching accuracy between the parts will decrease; when the bearing is damaged, abnormal sound will be produced due to the failure of the bearing to operate normally. Causes damage to parts in the gearbox, resulting in the expansion of the fault.
5. Insufficient lubricating oil or high viscosity causes uneven lubrication: if this is the case, it is necessary to replace the corresponding lubricating oil (grease), otherwise it will increase the wear of the gearbox and shorten the service life.
The abnormal noise of the gearbox is mainly caused by the loose bearing wear and the abnormal meshing between the gears. It basically occurs in two periods, that is, when the gear is in gear, and when the gear is in gear.

2 Reasons and solutions for abnormal noise of gearbox
1. The clutch disengagement is incomplete. This phenomenon often occurs on manual transmissions. To put it bluntly, when you step on the clutch, you will be in gear, and you will not step on it to the end. It is also possible that the clutch pedal was released during gear shifting.
If you do this for a long time, it will not only make abnormal noises and cause wear to the clutch, but also shorten the service life of the gearbox and clutch.
Solution: Standardize the gear shift operation. Be sure to depress the clutch all the way and then shift into gear, then shift into gear, then release the clutch pedal.
2. The gear is damaged or the connecting bolt is broken. If this is the case, the phenomenon is generally that the rear axle (differential bearing seat) makes a "ding" sound during driving, and the abnormal sound disappears when the back gear is empty.
Solution: Let a professional check to determine what the problem is, and then analyze it according to the specific problem.
3. The transmission pad is broken. If the foot pad of the gearbox is broken, it will not only make abnormal noise, but also vibrate very strongly, which will resonate with the body and make the vibration inside the car even greater.
If it is completely broken, it will affect the gear. Once in gear, the transmission vibrates and the shock is felt inside the car.
Solution: Replace the derailleur pad.

If none of the above measures help you solve the problem, you can try to replace the new gearbox, it will help you solve the problem completely, Wangchi is one of the most famous manufacturers of engine gears and camshafts in China, and is also a famous trader of engine gears and camshafts around the world. The company enjoys a high reputation in the international market.

Founded in 2008, Wangchi specialized in the manufacturing of engine gears and camshafts, and has obtained reputation in the motorcycle industry in China after 14 years of operation.

In 2020, Wangchi started to develop gearboxes for construction machinery. As a new player in the transmission industry, Wangchi aims to break down technical barriers and build its name with advanced technologies.

Wangchi is always focusing on innovation and spending a lot in research and development every year. Its gearbox series are much smaller and lighter than the equivalent standard transmissions in the global market.

With outstanding R&D capabilities, Wangchi is able to offer integrated solutions to clients in the fields of mobility.

Wangchi, a dynamic innovator, is shaping the future of transmission system.

For more information, please contact:
No. 10 Factory, Huxiao Village, Nanquan Street, Banan Disctrict, Chongqing, China

Telephone. (+86) 17353225540. Email: [email protected]
. Website: https://www.wangchigear.com/en-US/