BMW R75/5 charging system check & new seal install

Checking the charging system on an early BMW R75/5 airhead. And, replacing the crankshaft seal.

[@brianboru1705]

Thanks you answered my question. I have an R50/5 and it seemed like the charging circuit was bad but as I do lot of shot hops of city driving, looks like that is the cause of my issues. Thanks for taking the time to share your knowledge.

[@uredskivid]

Thanks , very well done .

[@jdhartenstein]

Thanks, very helpful!

[@H4n583]

Thanks for all the info. My r60/6 charge system is failing. This gets me a long way

[@bodhibikeshop8701]

You are welcome! Good luck!

[@abangwiguna]

Great video, clear explanation. Thanks

[@nikko7362]

Thank you! Great vid! :)

[@fostexfan160]

just got into the front of my engine on a 1980 R100 RS....its not charging. The first thing I noticed were some scorching marks on the grey paint of the diode board with broken traces of exposed copper? Is this like a printed circuit board where copper traces if broken, cause the diode board to malfunction?

[@bodhibikeshop8701]

If you see burnt traces on the board, that's a pretty good sign the board will not function correctly. These diode boards (Rectifiers) generate a lot of heat when converting AC to DC and the large diodes break down over time. If your diode board is an original from 1980, and it has broken/burnt traces, probably time to replace it. Good Luck!

[@ayyyMarley]

where can i buy that special tool to remove rotor?

[@bodhibikeshop8701]

I can't remember where I bought mine, but euromotoelectrics.com has one ($8). Search for: BOALT-Rotor642Tool