Here is the picture:



It did feel a bit tighter when the torque converter was properly seated, but that can also be because the oil pump was actuated.

How deep must the seal be? Slightly sticking out of the pump house? or flat?

I'm entertaining the possibility that the oil pump isn't original, because there was no gasket between oil pump housing and transmission. I cannot imagine MB forgetting a gasket, so a previous owner of the transmission must have had the oil pump out. The number on the pump is 1262770320, but the EPC doesn't know that number. If the oil pump isn't original, the original seal ring might not work.

I think we might have to go back to Autrans, the automatic gearbox workshop and let them press in a seal.