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What Causes the Transmission Valve Body Oil Leak in the Envision?

1 Answers

ChristianAnn

07/30/25 1:02am

Transmission valve body oil leakage in the Envision is caused by factors such as aging and deformation of oil seals, damage to the mating surfaces of the housing, or wear at the front mating surface of the bearings. The specific reasons are as follows: Aging and deformation of oil seals: If the oil seal spring falls off or the oil seal is installed in the wrong direction, the oil seal will lose its oil-blocking function. Replace aged or deformed oil seals, paying attention to the installation direction—the side with the spring ring should face the oil side. Damage to the mating surfaces of the housing: Apply appropriately thickened gasket material to the damaged area. If leakage persists, perform welding repairs. Damage at the front mating surface of the bearings: Loose fastening screws or a clogged transmission vent hole can isolate the transmission from the external atmosphere during operation, increasing internal pressure and causing oil to seep from the clogged area.

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How to Identify if an 18650 Battery is a Power Battery

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