​What should be paid attention to in the maintenance of automatic transmission cars

There are three types of cars with automatic transmission, manual transmission and semi-automatic transmission. Automatic transmission cars are easy to operate. Many car friends who have driven automatic transmission cars have this knowledge, so automatic transmission Compared with the other two types of cars, cars use more electronic devices, and there are more things to pay attention to in maintenance. Therefore, compared with the other two types of cars, automatic transmission cars are more difficult to maintain and repair. Pay attention to the following matters when performing automatic car maintenance.

1. Change the gearbox oil correctly. At present, the better oil change method is dynamic oil change. Special gearbox cleaning equipment is used. During the operation of the gearbox, the old oil is fully circulated and drained before adding new gearbox oil to increase the oil change rate. Up to 90 or more, to ensure a good oil change effect.
2. Always check whether the oil level of the automatic transmission is normal. The automatic transmission oil inspection method is different from the engine oil. The engine oil is checked in a cold state, and the transmission oil needs to be preheated to about 50°C, and then the gear lever stays in each gear for 2 seconds After that, place it in the parking block. At this time, the normal oil level of the oil dipstick should be between the high and low lines. If it is not enough, add oil of the same quality in time.

3. Master the cycle of changing automatic transmission oil. The internal control mechanism of the automatic transmission is very precise and the fit clearance is small, so the oil change interval of the automatic transmission is generally two years or 40,000 to 60,000 kilometers. In the process of normal use, the working temperature of transmission oil is generally around 120 degrees Celsius, so the quality of the oil is very high, and it must be kept clean. Secondly, after the transmission oil is used for a long time, grease will be generated, which may form sludge, which will increase the wear of the friction plates and components, and also affect the oil pressure of the system and affect the power transmission.