My lens causes the mirror in the OM-2N to jam. The reason for this is that the aperture mechanism is quite rough. I removed the bayonet mount and the ring with the aperture values printed on it. Unfortunately, I got stuck on the last ring (marked with red arrows), and despite unscrewing the four screws, it cannot be removed. Just below it is a metal ring (marked with blue arrows) that works a little too roughly. I plan to clean it with IPA and “lubricate” it with a little dry graphite powder. Does anyone have a service manual for this model?
[I took the liberty of using a photo from this thread: https://www.photrio.com/forum/threa...-clouding-removed-infinity-adjustment.203211/]
I only found an exploded parts diagram, the problematic ring can be seen on the last page - index: CE64/500.
Full diagram:
[I took the liberty of using a photo from this thread: https://www.photrio.com/forum/threa...-clouding-removed-infinity-adjustment.203211/]
I only found an exploded parts diagram, the problematic ring can be seen on the last page - index: CE64/500.
Full diagram:
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