a couple of weeks ago I purchased an old Zeiss Ikonta 521/2 with a Novar-Anastigmat 11cm/4.5. The rewind knob was missing so I got it fairly cheap. Yesterday I got how to dissable the (with the rewind knob missing now permanent locking) double exposure lock. Sadly at this point the shutter broke with no obvious reason. Before it was already sticky and not properly working at the times 1/25sec and B, so I released the shutter a dozen times or so. This worked just fine, but suddenly nothing happened anymore.
So I tried to disessamble the lens, but after the front lens I cant see how to continue. Is anyone here familiar with these old cameras? I really need some help. The Ikonta is simply too beautiful for letting it die like that.
Just grasp that whole brass lens casing and unscrew it. Rubber gloves might help you grip it well. It is threaded into the shutter. When you pull that out, you will be able to see the ring that hold that other element in the casing.