Been running my 65 Pan with factory oil line set up since 1970 and never had a problem. Running my 84 FLH and 78 FXE the same and never had a problem with either.

 

100s in and out of my shop are still original in the oil pulled back into the engine - but periodically are washed out and flushed clean and the oil change interval is not once every decade

 

This is invaluable for someone like me who is dealing with a show bike being prepaired to be ridden and never having delt with seaaling up a primary before.

All the best to you!
Mike Duty

 

Plus one for running the stock Primary oil line setup, my 1978 FXS has been that way since new in 77 when I bought it. When I did the lower end in 2003 just because I was worried about excessive mileage every bearing and shaft looked like new and was within spec.

 

[QUOTE=johnjzjz;18327728]well lets get this correct - the three lines for an oem original system


you can plug off the two rear 1/8 pipe thread fitting holes with plugs - then the feed line in the picture becomes a vent for the primary its self

Does the primary need a vent? Can it vent along the clutch push rod to the trans?

 

no the clutch nut seal will keep oil and air in both directions out of the other

 

Has the clutch nut seal been used on all years of shovels?

 

knuckle early pans used a cork seal with a spring to keep the oil from escaping - as I remember my 1926 also had a cork