Automatic transmission slip is one of the common faults of automatic transmission. The oil leakage of automatic transmission is the early cause of automatic transmission slipping.

液压控制系统的各连接部位上都有油封和密封垫，这些部件是常发生漏油的地方。液压系统漏油会引起油路压力下降，而油位下降则会引起自动变速箱打滑。自动变速器易发生漏油部位，应逐一进行检查。总结来说造成自动变速箱打滑有以下七个原因。

There are oil seals and gaskets on the connecting parts of the hydraulic control system, which are the places where oil leakage often occurs. The oil leakage of the hydraulic system will cause the pressure drop of the oil circuit, and the oil level drop will cause the automatic transmission to slip. The parts of automatic transmission prone to oil leakage shall be inspected one by one. To sum up, there are seven reasons for automatic transmission slipping.

1.自动变速箱油面太低

1. The oil level of automatic transmission is too low

2.自动变速箱油面过高，运转中被行星排剧烈搅动后产生大量气泡

2. The oil level of the automatic transmission is too high, and a large number of bubbles are produced when it is stirred violently by the planetary row during operation

3.离合器或制动器摩擦片、制动带磨损过甚或烧焦

3. The friction plate and band of clutch or brake are worn or burnt

4.油泵磨损过甚或主油路泄露，造成油路油压过低

4. The oil pump is worn too much or the main oil circuit leaks, resulting in low oil pressure in the oil circuit

5.单向超越离合器打滑

5. One way overrunning clutch slipping

6.离合器或制动器活塞密封圈损坏，导致漏油

6. The sealing ring of clutch or brake piston is damaged, resulting in oil leakage

7.减振器活塞密封圈损坏，导致漏油

7. The sealing ring of shock absorber piston is damaged, resulting in oil leakage

自动变速箱打滑故障，总的来说，都可以通过自动变速箱油位与品质来分辨。如自动变速箱油位过低，但无杂质，则查找漏油处进行修 复故障基本可排除；如自动变速箱油位过高，无杂质，调整自动变速箱油位，故障基本可排除；如自动变速箱油呈棕黑色或有烧焦味，则应拆解变速箱，排查是否内部零件（摩擦片、制动带等）存在磨损。

Generally speaking, the slip fault of automatic transmission can be distinguished by the oil level and quality of automatic transmission. If the oil level of the automatic transmission is too low, but there are no impurities, the oil leakage can be found and repaired, and the fault can be basically eliminated; If the oil level of automatic transmission is too high and there is no impurity, the fault can be basically eliminated by adjusting the oil level of automatic transmission; If the automatic transmission oil is brownish black or has burnt smell, disassemble the transmission to check whether the internal parts (friction plate, brake belt, etc.) are worn.