First I have to say that I love the Leningrad. It's a very nice camera with it's great view finder, body and spring motor. My first one was one from Juhani (and I always have it, dude :-)) and it works fine until now.
But most oft the Leningrads you get from eBay or a flew market (if you find one there) are in not so good condition. People often tried to repair it and the results are almost bad :-/
So I have 3 broken Leningrads here, one has a broken shutter (light leaks), the other one has a self made rewind knob and the third one was not able to cock, it makes a creaky sound and blocks while winding. Ouch, I have to open up the winding knob where the big spring is in was my first thought. Ok, let's go. Removed the two screws that hold the knob and pulled it up! I saw the spring flying through my room but nothing happens. Ok, let's see more.
It's a big spring, about 10 times wound in the housing. Ah, there are 3 screws on the bottom. They correspond to the 3 nuts that can be seen from inside. One helds a lever, one a small spring for the frame counter. Ok, let's remove the screws, the winding mechanism is broken and I can not make more damage.
The knob comes off and a lot of pieces felt down underside. No problem, I have an assembled top as a template for reassembling it :-)
How does it work? There is a gear inside the knob just under the spring that has two catches that make the characteristic sound while winding it. I turned it and it works fine. So what was the problem? A very very tiny piece of metal (just about a half of a millimeter) was broken from the gear and blocks the winding mechanism sometimes!
Cleaned it all with lighter fluid, reassembled it and it works like new now.
The Leningrad is one of the cameras that I have never disassembled so complete before, but NOW I GOT YOU BABE :-)
Ulrich
http://fotos.cconin.de
12/22/2012 16:17