FED-2 rangefinder horizontal alignment is dead - how to repair?

domdel

Member
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Joined
Oct 19, 2018
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Hi everyone,

After having spent month identifying and fixing a nasty light leak on my FED-2 camera, and eventually being able to shoot pictures with it (see https://www.rangefinderforum.com/forums/showthread.php?t=170775), it turns out that the rangefinder horizontal adjustment screw for infinity has come out of its thread (or so I suppose)... I'm deducing that from my reading of this thread: https://www.rangefinderforum.com/forums/showthread.php?p=3017058

I'm not able to fix horizontal alignment at infinity anymore, and it also seems that the whole linkage is wrong, as all my distance readings are wrong by several meters even on close targets (e.g. an object at 2.5 meters will read 7 meters on the lens when I try to superpose the 2 images in the viewfinder). I can't fix this by adjusting the cam that links with the lens (the one you usually adjust for short range adjustment).

I suspect it all comes from the infinity screw which popped out of its thread - could it be correct? And if so, how can I fix this?

Reading another thread (https://www.rangefinderforum.com/forums/showthread.php?t=144596) I somehow understood that the vertical adjustment wedge could have two positions enabling proper vertical alignment but with one of the two being totally wrong for horizontal alignment at infinity, so I was hoping that by turning it by 180° it would fix my issue - however it doesn't seem to work, if at 180° my vertical alignment is totally screwed.

It really does seem that the screw than links with the cam is out of its thread and therefore pushes the cam too far. How can I make it enter its thread again, to be able to adjust it via the front adjustment screw?

attachment.php


I can turn the adjustment screw counter-clockwise, however it comes back to its original position as it seems to be somehow constrained by the spring. I can't turn it clockwise.
Should I for instance remove the cam that links to the lens, by unscrewing the 2 screws holding it, to then try to put the adjustment screw back into its thread?

attachment.php


Thanks in advance!
 
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