Transmission into the water three degrees
　　1、Mild water ingress: some screws in the transmission are rusted
　　If you can't judge with the above two practices, you need to observe the screws inside the transmission by disassembling it. If some of the screws are rusted after the transmission is suspected to be in water, it can be judged that the transmission is lightly in water, and the water content is not too large.
　　2、Moderate water ingress: white sediment appears in the oil pan
　　If you can't determine whether water is in the transmission by draining the oil, you need to do further inspection. The specific approach is to remove the oil pan for observation. Because if the transmission into the water, oil and water mixed will produce a white emulsion, and attached to the oil pan, if you observe such precipitates, then the transmission already belongs to the moderate water.
　　3、Serious water: observe the oil-water mixture to identify
　　Transmission into the water is more serious, can be directly observed by draining oil. The specific practice is to drain the oil in the transmission, if more water into the observation of the color and viscosity of the oil-water mixture can be judged.
　　For the different states of water in the transmission, I give the following repair suggestions.
　　1、Light water: Replace transmission oil and differential oil
　　The repair method for minor water ingress is similar to moderate water ingress, but mainly focuses on prevention. Replace the rubber ring, oil seal, friction plate and other components to extend the service life, and recommend replacing the transmission fluid and differential oil.
　　2、Moderate water ingress: friction plate, oil seal and other parts should be replaced
　　Moderate water ingress requires much less parts to be replaced than severe water ingress, but the rubber ring, oil seal, friction plate and other parts, as well as the transmission fluid and differential oil should be replaced. If the automatic gear multifunction switch and other components involved in water also need to be replaced.
　　3、Severe water ingress: at least three need to be replaced
　　Water serious transmission needs to replace many parts, the following list of six maintenance projects, the first three of which should be implemented: First, to replace the rubber ring, oil seal a rubber nature of the components; Second, to replace the friction plate, because the friction plate consists of steel and high-density wood resin material, water swelling will affect the friction effect; Third, also need to replace the transmission oil and differential oil; Fourth, the water serious need to replace Fifth, whether to replace the valve body of the transmission depends on the situation, because if the transmission into the water lubrication effect will be weakened; sixth, if the automatic gear multifunction switch and other components involved in water should also be replaced.
　　Special reminder: repair the transmission also need to clean the cooling oil channel again after the transmission into the water is repaired, does not mean that everything is over. Because there is still water in the cooling oil channel of the vehicle, water will enter the transmission again if installed directly. Therefore, before installing the transmission into the car, y will remove all the water from the cooling oil channel.