Lost oil found in rear drive of 75/5

[boxerotto]

Oil was lost out of my drive shaft and found back in form of excessive oil in the rear drive. I assume it is the shaft seal of the rear drive. Has anyone done this repair or know a god website with explanations? special tools necessary?

Also I like to rebuild my forks and IÔÇÖm looking for a good tech article

Thanks RJ

[cjack]

Oil was lost out of my drive shaft and found back in form of excessive oil in the rear drive. I assume it is the shaft seal of the rear drive. Has anyone done this repair or know a god website with explanations? special tools necessary?

Also I like to rebuild my forks and IÔÇÖm looking for a good tech article

Thanks RJ

Fairly common. Seals were changed back then with no improvement sometimes and BMW came out with a bulletin telling the shops to seal the shaft splines where the ball spline slips onto the pinion shaft. They said to use heavy grease.

[20774]

Also I like to rebuild my forks and IÔÇÖm looking for a good tech article

A couple of articles on fork/bearing rebuild:

http://www.ibmwr.org/r-tech/airheads...overhaul.shtml

http://bmwmotorcycletech.info/steering.htm

[44006]

could be the seal but may be the pinion bearing

I once noticed rapid loss of shaft oil to rear on a trip
and failed the pinion gear shaft bearing before
I got home - bummer