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Meyer Primiplan 58/1.9: disassembly problem
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PostPosted: Sun Sep 30, 2018 2:06 am    Post subject: Meyer Primiplan 58/1.9: disassembly problem Reply with quote

My old M42 pre-set Meyer Primoplan 58/1.9 can certainly do with a relube of the focussing drive mechanism, but I have some problems taking it apart. Here's how far I have managed.

1. Remove three screws from the back to take off the camera mount ring.

2. Remove the two black-finish screws that work as pins for the straight slots, for effecting rectilinear travel

3. Unscrew lens unit from focussing drive unit, and then...

... the lens unit rotates a few turns and then it cannot go any further to come out of the focussing drive unit. I cannot see anything obvious that stops it from doing so.

I would greatly appreciate any insight into this; thank you in advance.