AJS-20 oil pass from mainbearing.

[morris]

Oil from the mainbearing, left side, pass bye the Spacer (Collar) o14295 inside the engine sprocket
and fill up the chaincase, more or less.
Not! It is not from the crankcasebreather in mainshaftend! Because it is permanent plugged, and new breathport is at the opposite, in timingsidecover.
A modern (!) oilpump is fitted, and thereby higher pressure and more oil. Well, it gives plus and minus...
The parts in duty is in god order, but obviosly, they
leak under pressure, sorry.
The question: Is it any solution, for instance by
O-ring or another arborsealing known?