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

在拆卸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 transmission, it is necessary to check whether there is a corresponding automatic transmission model in stock. It is not recommended to disassemble the transmission immediately when there are not enough vulnerable parts and necessary replacement parts.

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。

You can drain the gearbox oil first, unload the USB flash disk, and check the impurity part of the residual oil. Under normal circumstances, if there is dark brown or brown powder, the clutch plate is worn, and the bright white metal powder is worn by 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 location of the car body, it is often not enough space to remove the gearbox directly from the rear of the engine. A reliable way is to lift the gearbox from the car 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 in both the forward and reverse directions around the axis, but it should not swing up, down, left and right, so as not to damage the surface condition and fit of the connection between the automatic transmission input shaft and the hydraulic coupling or torque converter.

后期解体与装合

Later disassembly and assembly

首先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，从前至后，由外向里逐步进行，并做好记录。

First, prepare tools and small boxes for various parts, disassemble them on a clean and flat operation platform, start from the front oil pump, from front to back, from the outside to the inside, 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, remember not to knock directly with crowbar and iron, because most of the automatic transmission shell is made of aluminum alloy. When disassembling the hydraulic control valve body, it is necessary to prevent the ball and snap ring from falling to the ground 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. Do not reverse it when assembling. Clean the parts with gasoline after disassembly, Make sure the components are clean.