Sealing rings for old V6 replacement tanks and transmission pipes
KyleEdison 
10 In the 2010 E300, I did it myself to replace the water tank and gearbox, and the sealing rings of the connected cooling pipes. Last time, I finally found a company that replaced the sealing rings, but it leaked again in less than three months. At that time, the repair shop said that if leaks can only be purchased from the original factory sealing rings to be completely treated. The picture below is a diagram of the seal rings removed by the original factory, replaced by the repair shop, and purchased by the original factory
The three sealing rings are different in size. The original one was removed from the car and became loose and larger. The sealing rings in the repair shop are obviously thick and large. The ones I bought are small and tight and have good elasticity.
Prepare a T20 socket screwdriver and an open-ended wrench 19. First remove the screws that fix the oil pipe below, and then remove the upper heat pipe connector
This screw is very long. Tighten it slowly and don’t use force.
This screw is very long
Remove this 19-size bolt boldly. If you need antifreeze, take a plate to connect it and reverse it back. Less antifreeze flows out here. About 200 milliliters.
Install the sealing ring. Although it seems very loose, it is designed like this. It will be fine when it is tightened.
The original factory looks very loose
The installation was completed and the maintenance was completed. There was no water leakage after starting and running for one lap. The maintenance was considered successful. If this connection is leaking, don’t listen to the repair shop’s instructions to replace the water tank. It only takes half an hour to complete it yourself. I listened to the moderator’s advice and insisted not to replace the water tank.
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