If you have to conduct adjustments for your BMW R 80 RT then it will always be a good idea to have access to a Workshop Manual for a reference just in case you need to know techniques to take off a certain part much like the Drive Shaft and match it again safely.
BMW R 80 RT Workshop Manuals provide you with distinct diagnostic information for the car or truck so if something is faulty it can help you determine what the problem is and how to make it better. You will be able to evaluate if this can be done on your own or in case the job is too big you are able to make a booking for your R 80 RT in with a suitable friendly mechanic.
BMW R 80 RT manual