Because of the convenience of the automatic transmission on the urban road, the occupancy rate is increasing. However, the structure of the automatic transmission is more complex than that of the manual transmission. Once damaged, the maintenance process is more difficult.

因此，今天先来谈谈自动变速箱维修注意事项。

Therefore, let's talk about the maintenance of automatic transmission.

自动变速箱常见问题

Common problems of automatic transmission

1、行驶中有冲击的感觉

1. There is a feeling of impact when driving

2、车辆打滑，加速无力，起步无力，甚无法起步

2. Vehicle skidding, weak acceleration, weak starting, or even unable to start

3、入档、换挡冲击，入档熄火

3. Gear in, shift impact, gear in flameout

4、轴承、差速器、主转动齿轮、油泵等液压系统异响

4. Abnormal noise of hydraulic system such as bearing, differential, main rotating gear, oil pump, etc

所以自动变速箱维修要根据车子的不同问题做出不同的对应措施。

Therefore, the maintenance of automatic transmission should make different corresponding measures according to different problems of the car.

我们把自动变速箱的维修过程分三步：拆卸前、拆卸时、后期解体与装合。

We divide the maintenance process of automatic transmission into three steps: before disassembly, during disassembly, and after disassembly and assembly.

拆卸自动变速箱前

Before removing the automatic transmission

在拆卸自动变速箱之前一定要查找库存是否有对应的自动变速箱型号，在不能保证起码的易损件和必换件都充沛的情况下，不建议立即拆卸解体。

Before disassembling the automatic transmission, it is necessary to check whether there is a corresponding automatic transmission model in stock. It is not recommended to dismantle the automatic transmission immediately if the minimum number of vulnerable parts and necessary replacement parts are sufficient.

可先放干变速箱机油，卸下优盘，检车残油品种的杂质部分，在正常情况下，含有深褐色或褐色粉末为离合器片磨损，亮白色金属粉末为油泵、单向离合器、齿轮机构磨损，从而进一步判断车子的故障。

The gearbox oil can be drained first, the USB disk is removed, and the impurity part of the residual oil is inspected. Under normal conditions, dark brown or brown powder is worn for the clutch plate, while the bright white metal powder is for the wear of the oil pump, one-way clutch and gear mechanism, so as to further judge the fault of the car.

拆卸自动变速箱时

When removing the automatic transmission

因车身底板形状个位置的限制，直接从发动机后部拆下变速箱往往显得空间不够，可靠的办法是连同发动机一同从车上吊下。

Due to the limitation of the shape and position of the underbody, it is often not enough space to remove the gearbox directly from the rear of the engine. The reliable way is to hang the gearbox from the vehicle together with the engine.

把自动变速箱拉离发动机时，应该沿着轴向拉动，克伴以绕轴线的顺和反方向转动，但不得上下左右摆动，以免损坏自动变速箱输入轴与液力耦合器或变矩器连接比分的表面状况与配合。

When the automatic transmission is pulled away from the engine, it should be pulled along the axial direction and rotated along the axis in the opposite direction. However, it is not allowed to swing up, down, left or right, so as to avoid damaging the surface condition and matching of the automatic transmission input shaft and the hydraulic coupling or torque converter.

后期解体与装合

Later disintegration and assembly

准备好工具及盛放各类零件的小盒子，在干净平整的操作台上进行解体，从前部油泵开始，从前后，由外向里逐步进行，并做好记录。

First of all, prepare the tools and small boxes for holding all kinds of parts, and disassemble them on a clean and flat operation platform. Start from the front oil pump, from front to back, from outside to inside step by step, and make records.

在拆卸的时候，一定要记住不能用撬棍和铁器直接敲打，因自动变速箱壳体大多数用铝合金铸成，在拆卸液控阀体是防止上下阀体分离时滚珠、卡环等掉地，要准确记住正确位置，拆卸单向离合器要注意正确配装方向，装合时不能颠倒，零件拆卸后应用汽油洗净，确保各元件的清洁。

When disassembling, it is necessary to remember that it is not allowed to directly knock with crowbar and iron ware, because most of the automatic transmission case shells are made of aluminum alloy. When disassembling the hydraulic control valve body, it is necessary to prevent the ball and snap ring from falling off when the upper and lower valve bodies are separated. Remember the correct position accurately. When disassembling the one-way clutch, pay attention to the correct assembly direction, and do not reverse when assembling. The parts should be cleaned with gasoline after disassembly, Make sure that the components are clean.

自动变速箱出现故障大多数是由于车主使用不当造成的，部分车主总是认为自动变速箱油不需要更换、自动变速箱进水也不需要理会，导致变速箱的损伤越来越大，甚报废。

Most of the failures of automatic transmission are caused by improper use of vehicle owners. Some car owners always think that the oil of automatic transmission does not need to be replaced and the water in the automatic transmission does not need to be paid attention to, resulting in more and more damage to the gearbox, or even scrapped.

为了保障广大车主的行车，各位在平常行车中一定要正确使用车辆，一旦车子出现问题一定要及时送往维修公司进行检查维修，以免造成大患！

In order to ensure the driving safety of the majority of car owners, you must use the vehicle correctly in the ordinary driving. Once the car has problems, you must send it to the maintenance company for inspection and maintenance in time, so as to avoid serious accidents!