R42 rear drive oil fill plug
Posted: Wed Feb 28, 2007 4:35 pm
Peter, I've been in this club since the early 80's and you are the first guy that I've had conversation with that makes some of his own parts.
The thread pitch on my R42 final drive fill plug measure 1.5 and the outside thread diameter measures .705". The wrench size is 17 mm and the hex is .185" tall. Under the hex is a flange that is .925" dia. and .095" thick. From the bottom of the flange to the bottom of the threads measures .340".Overall height is .615".The center of the plug is bored out about .545" deep and .482" dia. if your so inclined. I think this is the correct cap. The meat head I got the bike from had it screwed in the transmission detent plug hole and the detent pin actually poked a hole thru the cap. I hope this helps. Dan
The thread pitch on my R42 final drive fill plug measure 1.5 and the outside thread diameter measures .705". The wrench size is 17 mm and the hex is .185" tall. Under the hex is a flange that is .925" dia. and .095" thick. From the bottom of the flange to the bottom of the threads measures .340".Overall height is .615".The center of the plug is bored out about .545" deep and .482" dia. if your so inclined. I think this is the correct cap. The meat head I got the bike from had it screwed in the transmission detent plug hole and the detent pin actually poked a hole thru the cap. I hope this helps. Dan