Nikon dissecting scope zoom slipped

Posted by Dan Lysko on
URL: http://confocal-microscopy-list.275.s1.nabble.com/Nikon-dissecting-scope-zoom-slipped-tp7587936.html

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Hi all,

I have a Nikon SMZ1500 in which the zoom mechanism has slipped, so that the
zoom no longer works - no movement.  There are some white plastic gears
that are the problem, but I can't access them, due to the plastic shell.
So I'm trying to get the shell off but it seems I need to remove the focus
knobs.  I've got fine focus off but how to take off the gear cluster?  Or
is there a better way to access the zoom gears- drill out a little arc of
the plastic?

https://imgur.com/a/PEqL9

Thanks!