The maintenance cost of automatic transmission ranges from two to three thousand to one or two thousand, which is also a headache for car owners. How can we avoid high maintenance costs? First of all, it is necessary to know that major diseases are developed from minor diseases. For example, if we have a cold and cough, we can take medicine in time for a few days. If we encounter poor physical fitness, if we do not receive treatment in time, it may develop into bronchitis and pneumonia, so we change speed. If the box is abnormal, it is necessary to detect the fault in time and repair it in time, that is, stop the loss in time. So what are the common gearbox failures? How did it form?

1. Slip
When the accelerator is accelerated, the engine speed increases, and the speed does not go up
1. The initial symptoms are shaking, and there is occasional slight idling when climbing. If the driving habits are good and the age of the car is not long, it is necessary to check whether there is a lack of oil and leakage, because the automatic transmission is driven by oil pressure. Work, long-term work will also produce impurities, oil deterioration, unstable oil pressure.
2. Sealing problems, pressure relief and insufficient oil pressure caused by wear of rubber rings, pistons and valve bodies
3. There is wear and peeling on the surface of the friction plate, and the combination is not in place due to the decrease of the friction coefficient during driving.
4. Control problems, computer damage, insufficient power supply to the solenoid valve, sensor blockage and stuck
5. Caused by the lack of tacit cooperation between clutch brakes and pistons
Second, the setback
The gearbox produces a shock and stumbling feeling when shifting up and down, and the car feels stuck when the throttle is added. The initial solenoid valve is abnormal and cannot control the oil pressure adjustment normally. It may be solved by replacing the solenoid valve in the initial stage. The iron scraps worn by impurities cause wear and tear, and the valve body plunger is stuck, so the valve body needs to be replaced.
3. Shift delay
The gear shift delay is due to insufficient engine power and the valve body is worn and stuck, causing the shift valve to be unable to shift when the oil pressure is small, or the sensor malfunctions. Some cars have inherent design defects, and it is prone to shift delays when they reach 100,000 kilometers. Due to the wear of friction plates and clutch drums, pressure relief and insufficient oil pressure are caused.
4. Abnormal noise
1. Abnormal noise of bearing: Generally, the abnormal noise of bearing is closely related to the rotation speed, the meshing surface of the gear is not smooth, and there is abnormal noise caused by pitting.
2. The differential, input shaft, and oil pump have been used for a long time, and there is a sound caused by the open volume.
The gearbox system works in conjunction with the engine and chassis, and many sounds are mixed together and difficult to distinguish. It is necessary to go to a professional place to carefully identify the lift.
Five, do not drive
It can't be used whether going forward or backward, or it can be used for a short period of time after the cold car starts, and it cannot be used after the car is warmed up.
1. The transmission oil is seriously missing, and the oil pan leaks
2. Computer failure
3. A large number of worn out iron filings and foreign objects cause serious blockage of the oil pump inlet filter
4. There is a serious mechanical failure inside. Such as planet carrier burnt, chain breakage, etc.
For the above common faults, regular maintenance of the gearbox in the early stage can avoid premature gearbox failure, prolong the service life of the gearbox, and go to a professional place for inspection and maintenance in time when abnormal phenomena occur, so as to avoid excessive losses and pay high maintenance costs.

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/