Hi Tom!
First off, welcome to the group! You'll find a WEALTH of knowledge among the members here. I see you have yourself a Super J to restore. Good choice! The first vacuum I would call "mine" was a Super J, so those are near and dear to me! I don't have any of the diagrams that you're looking for, but I know someone who just might be able to help you out. His name is Nathan Thomas, and he goes by the name Electrolux-Dude on here. He knows those machines inside and out, and most likely will have any diagram you'd need. Best of luck to you on your restoration, and I hope you enjoy the group, it's a GREAT group of folks!
Steve B.