This “project” bike has been sitting for over 25 years. So, for reliability, I’m going to replace the charging system which consists of the alternator, diode board and all associated wiring. I may try to rebuild the electronic ignition sensor, aka, the “bean can” that uses a Hall effect sensor to trigger the ignition. This document covers how I remove the components.
Also, I plan to replace the timing chain, crankshaft timing sprocket and the nose bearing which are behind the inner timing cover that the charging system and electronic ignition sensor are mounted to, so I have to remove all these components before I can remove the inner timing cover.
The original alternator looks a bit bedraggled.
Original Alternator Looks Bedraggled
I’ve replaced charging systems on other projects. Here are links to those documents.
- 12 BMW 1977 R100RS Replace Engine Electrical Components
- 12 BMW 1983 R100RS Remove Diode Board, Alternator & Electronic Ignition Sensor
Here is what the inner timing cover looks like after all the engine electrical components are removed.
Inner Timing Cover After Engine Electrical Components Removed
Here is a link to the document showing how I do this work, and a short YouTube video summarizing the work.
VIDEO: 1983 BMW R80ST Remove Alternator, Diode Board & Electronic Ignition Sensor