Many automatic car owners take good care of them when they first buy a new car. But once the warranty period is over, I'm too lazy to figure out how to inspect, maintain and repair the vehicle: "if the car can drive, it can't be repaired again". When an accident occurs and the vehicle is sent for maintenance, the minor fault of the automatic transmission expands and worsens due to the lack of timely maintenance, resulting in a major accident.
So how to maintain automatic models?
1. Always check whether the automatic transmission oil level is normal. The inspection method of automatic transmission oil is different from that of engine oil. When the engine oil is checked in the cold state, the transmission oil needs to be preheated to about 50 ℃, and then the gear lever is placed in the parking gear after staying in each gear for 2 seconds. If it is not enough, the oil of the same quality should be added in time.
2. Master the cycle of changing automatic transmission oil. The internal control mechanism of automatic transmission is very precise and the fit clearance is small, so most manufacturers recommend that the oil change cycle of automatic transmission is generally two years or 40000-60000 km. In the process of normal use, the working temperature of transmission oil is generally about 120 ℃. Therefore, the quality requirements of oil products are very high and they need to be kept clean. Secondly, the transmission oil will produce oil dirt after a long time of use, which may form oil sludge, increase the wear of friction plates and components, and also affect the system oil pressure and power transmission. Third, the sludge in the dirty oil will hinder the movement of the valve body in each valve body, and the oil pressure control will be affected, so that the automatic transmission will be abnormal.
3. Replace the transmission oil correctly. At present, the better oil change method is dynamic oil change. Special gearbox cleaning equipment is adopted. During the operation of the gearbox, the old oil is fully circulated, and new gearbox oil is added after being discharged, so that the oil change rate can reach more than 90 and ensure good oil change effect.
The above is a detailed introduction about BMW specialty in Jinan. I hope it will be helpful to you If you have any questions, please contact us We will provide you with professional service http://www.sdrunao.com