Buying a used car to check its transmission is very important. The inspection of the transmission is to judge the fault by gearing, shifting, listening to the sound, and checking the leakage. If the failure is severe enough to affect the price, inspection of the transmission in the road test is particularly important. Â 1, check all forward gear and reverse gear If the gear is grinded each time, the clutch hydraulic system or the transmission itself may be faulty. Â 2, check whether the normal into the file If it is found that it is not properly geared or geared, or if it is difficult to push the neutral gear back, it is difficult to shift gears. After the flame is turned off, the gear lever can be held by hand. If it is loose, it can swing freely. It is caused by positioning failure. If it is difficult to shift gears when it is not loose, it may be a shock caused by a synchronizer failure during shifting. After such failures, they need to enter the factory for repairs. Â 3, check whether there is no jump back to neutral If the shift lever returns to neutral during driving, the gears and gear sleeves may be seriously worn, resulting in bearing looseness or excessive axial clearance. Professionals are required to check the gear engagement condition. If you discover that the transmission is leaking oil, there may be a poor sealing of the seal or damage to the oil seal of the transmission output shaft. Excessive lubrication or poor ventilation holes can also cause oil leakage. Â 4, check for abnormal sound If the transmission is in a neutral position and there is an abnormal sound when the engine is idling, there may be a deviation between the crankshaft and the concentricity of the first shaft of the transmission, and it may disappear when the clutch pedal is depressed. If there is an abnormal sound after entering the gear, it may be caused by an impact when the meshing gears work, indicating that the transmission housing is damaged, or that some gears are damaged and the impact during the meshing process is caused. Mbr Membrane,Mbr Membrane Bio Reator,Mbr Plate Membrane,Mbr Flat Membrane Ji'an city Qing Feng Filter Equipment Material CO.,Ltd , http://www.qingfengfilter2.com