在自动变速器运行中，ATF是不断流动的。一般来说，自动变速器的ATF循环是这样进行的：首先，油泵被发动机带动并从油底壳中抽取ATF，ATF首先进入液压阀体中的主调压阀，其中一部分ATF经主调压阀进入液力变矩器，在进入液力变矩器之前还会经过液压阀体的锁止调压阀进行调节；ATF在流经液力变矩器后，再流过散热器，由于散热器在变速器的外部，因此这时ATF已经流出了变速器，然后经过散热器的回油管再次流入变速器。次油路通常称为润滑油路，它用于对行星齿轮等机构进行润滑，防止其过热而烧损；最后，这些润滑油流回位于变速器底部的油底壳，从而完成一次循环。随着油泵持续运转，ATF回周而复始地循环。因此，在自动变速器维修工作中，零件的清洗和清洁显得至关重要。通常我们使用煤油来清洗零件，有的小型修理厂为了节省，反复用少量的煤油清洗零件，然后用压缩空气吹干了事。结果修出来的自动变速器故障不断，换了新的液压阀体还是一样。因为杂质已被带入自动变速器的液压循环系统中，像慢性病一样总是出现，而且找不到病根。这种情况就必须彻底清洗和清洁整个液压系统回路，故障才能彻底排除。

　　During the operation of an automatic transmission, ATF is constantly flowing. Generally speaking, the ATF cycle of an automatic transmission is carried out as follows: firstly, the oil pump is driven by the engine and extracts ATF from the oil pan. The ATF first enters the main pressure regulating valve in the hydraulic valve body, and a part of it enters the hydraulic torque converter through the main pressure regulating valve. Before entering the hydraulic torque converter, it also passes through the lock up pressure regulating valve of the hydraulic valve body for adjustment; After passing through the hydraulic torque converter, ATF flows through the radiator. As the radiator is located outside the transmission, ATF has already flowed out of the transmission and then flows back into the transmission through the radiator's return pipe. The secondary oil circuit is usually referred to as the lubrication circuit, which is used to lubricate planetary gears and other mechanisms to prevent them from overheating and burning out; Finally, these lubricating oils flow back to the oil pan located at the bottom of the transmission, completing one cycle. As the oil pump continues to operate, the ATF circulates back and forth. Therefore, in automatic transmission maintenance work, the cleaning and cleaning of parts are crucial. Usually, we use kerosene to clean parts. Some small repair shops, in order to save money, repeatedly use a small amount of kerosene to clean parts, and then dry them with compressed air. As a result, the automatic transmission faults that were repaired continued to occur, and even after replacing the hydraulic valve body with a new one, it remained the same. Because impurities have been introduced into the hydraulic circulation system of the automatic transmission, they always appear like chronic diseases, and the root cause cannot be found. This situation requires thorough cleaning and cleansing of the entire hydraulic system circuit in order to completely eliminate the fault.

　　杂质不仅来自不清洁的清洗零件，更多的杂质来自变速器内部，变速器由于不断磨损而产生的金属碎屑和摩擦片的碎屑。金属碎屑主要来自不断磨损的行星轮、铜套和轴承。液力变矩器内部的一些垫片、磨损的锁止活塞以及前盖内侧壁。剖开旧的液力变矩器，往往会看到双金属垫片的铜层已经被磨损掉，导论也被垫片磨损。摩擦片碎屑有的来自自动变速器内的离合器，有的来自液力变矩器内的锁止摩擦片。尤其是锁止摩擦片，它产生的碎屑会随着 ATF的流动而污染液力变矩器、散热器、液压阀体和电磁阀。

　　Impurities not only come from unclean cleaning parts, but also from the interior of the transmission, where metal debris and friction plate debris are generated due to continuous wear and tear. Metal debris mainly comes from the constantly worn planetary gears, copper sleeves, and bearings. Some gaskets inside the hydraulic torque converter, worn locking pistons, and the inner wall of the front cover. When cutting open an old hydraulic torque converter, it is often seen that the copper layer of the bimetallic gasket has been worn off, and the introduction is also worn by the gasket. Some of the debris from the friction plates comes from the clutch inside the automatic transmission, and some comes from the locking friction plates inside the hydraulic torque converter. Especially the locking friction plate, the debris generated by it will contaminate the hydraulic torque converter, radiator, hydraulic valve body, and solenoid valve with the flow of ATF.

　　藏匿这些杂质的最好地方就是液力变矩器和散热器。液力变矩器内部有许多皱褶的部位，尤其是锁止活塞反面的减震器内侧，是藏污纳垢的号地方。如果不把变矩器剖开来进行彻底清洗，是无法洗干净的。将液力变矩器剖开进行翻新是一种标准的自动变速器维修流程，但由于条件所限，许多维修企业都不具备这种设备。因此在对待液力变矩器的清洁时应十分地谨慎 ，没有掌握的话可以换新件。散热器的清洁问题也很多，其内部管道弯曲迂回，即使清洁时施加较大的压力，也难确保清洗效果。因此，将散热器清洗干净并不是想象的那么简单。若用压缩空气进行清洁，就更没法保障了，因为即使严重堵塞的散热器也能让压缩空气流过，给人以通畅的感觉。

　　The best places to hide these impurities are the hydraulic torque converter and radiator. There are many wrinkles inside the hydraulic torque converter, especially on the inside of the shock absorber on the opposite side of the locking piston, which is a place where dirt and grime accumulate. If the torque converter is not disassembled for thorough cleaning, it cannot be cleaned thoroughly. Cutting open the hydraulic torque converter for refurbishment is a standard automatic transmission maintenance process, but due to limited conditions, many maintenance companies do not have this equipment. Therefore, great caution should be taken when cleaning hydraulic torque converters, and if not mastered, new parts can be replaced. There are also many cleaning issues with radiators, as their internal pipes are bent and circuitous, making it difficult to ensure cleaning effectiveness even when subjected to high pressure during cleaning. Therefore, cleaning the radiator is not as simple as imagined. If compressed air is used for cleaning, it is even more difficult to guarantee, because even severely clogged radiators can allow compressed air to flow through, giving people a smooth feeling.

　　液压阀体中的锁止阀和阀孔都比较容易磨损。这是因为油路循环的特点使ATF从散热器流出后，首先流到液压阀体中的锁止阀，从散热器带出来的杂质很容易卡主或者磨损锁止阀套，同时也会磨损阀孔。在这种情况下，仅仅更换锁止阀套已经不能解决此处的问题，必须通过阀孔进行铰孔并安装增大型锁止阀和阀套，否则就应该更换液压阀体。

　　The locking valve and valve hole in the hydraulic valve body are prone to wear and tear. This is because the characteristic of oil circulation causes ATF to flow out of the radiator and first to the lock valve in the hydraulic valve body. Impurities carried out from the radiator can easily get stuck or wear out the lock valve sleeve, and also wear out the valve hole. In this case, simply replacing the locking valve sleeve cannot solve the problem here. It is necessary to drill the valve hole and install an enlarged locking valve and valve sleeve, otherwise the hydraulic valve body should be replaced.

　　总之，在维修中既要防止从外部带入污染物，也要从变速器内部清除污染物。在很大程度上，零件清洗流程和工艺体现了维修企业的专业化程度和维修品质。

　　In short, during maintenance, it is necessary to prevent the introduction of pollutants from the outside and to remove pollutants from the inside of the transmission. To a large extent, the parts cleaning process and technology reflect the level of specialization and maintenance quality of the maintenance enterprise.

　　本文由 济南自动变速箱维修 友情奉献.更多有关的知识请点击   http://www.jnbsx.com  真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

　　This article is a friendly contribution from Jinan Automatic Transmission Maintenance For more related knowledge, please click http://www.jnbsx.com Sincere attitude To provide you with comprehensive services We will gradually contribute more relevant knowledge to everyone Coming soon.