Hope someone out there can help. On rebuilding my Dauphine G motor, I found that it was difficult to fit the timing gear cover oil seal. This is because there didn't seem to be one there when the engine was pulled down. The crank shaft pulley has a worm drive attached to the back of it which fits into the place where the timing gear oil cover seal should go. I assume this worm drive pushes any oil back into the timing cover, thus eliminating the need to have timing gear cover oil seal. The problem is I can find no reference to this set up in my repair manuals. Can someone please advise me what the story is.