Another important step in order to start repairing or servicing my camera collection has been achieved: The first batch of service and repair manuals have arrived this week from US based http://www.photobooksonline.com/ . Check out their webpage, they have an extensive assortment of user,  repair and service manuals.
Leon was very helpful when processing my order and in finding the most efficient way for shipping all the manuals from US to Vienna.
Also, to my surprise, I did not have to pay any taxes, but maybe the invoice has yet to come.

Anyhow, there will be a lot of reading and studying in the next time and eventually, I will need to select the camera I will do my first servicing attempt and it will very likely not be the Nikon F2 with its more than 1’500 individual parts.