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Demontage Wild M3Z

MessagePosté: 17 Nov 2017 18:24
de wild_tom
M3Z_3.jpg
Which screw(s) to remove?
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Re: Problème alignement Wild M3Z

MessagePosté: 17 Nov 2017 19:32
de PierreH
Hello Tom,

it is absolutely forbidden to remove these screws : they keep aligned lenses and vertical slider of the optical zoom.
It would be a nightmare to adjust the whole zoom system !

I don't think that the screws that held your system are inside microscope housing :
because the two parts of the microscope housing (top and bottom) are kept together with 3 long screws that you access at the bottom side.
Image3red.jpg
bottom
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But this is not what you need to do :
I think (in fact, I am pretty sure) that the black plate that hold the motor is screwed with the same 2 screws that hold the microscope housing to the microscope holder.
These 2 screws are circled in blue on the photo.

You have to remove the black rectangular part to see these 2 screws...

Re: Problème alignement Wild M3Z

MessagePosté: 17 Nov 2017 21:31
de wild_tom
PierreH a écrit:You have to remove the black rectangular part to see these 2 screws...

Thank you for your reply!
I've tried before to remove the black rectangular part without success. I'll try again to find any screw behind.
I think the big white gear-wheel is bolted to the black triangular plate, but then sealed by grey epoxy.
I've not tried to remove the epoxy, not to damage anything...

Re: Problème alignement Wild M3Z

MessagePosté: 17 Nov 2017 21:36
de wild_tom
I've marked the epoxied areas in red.
I've also marked the areas I suggest the long screws you mentioned, in blue.

M3Z_hidden_screws.jpg
Hidden screws?
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I'm not quite clear how to remove the epoxy.
Maybe I use a hot soldering iron...

PS: The reason, why I want to remove the unused parts:
I want to have access to the objective to change it or use an additional clamp-on-type 1.6x converter lens

Re: Problème alignement Wild M3Z

MessagePosté: 17 Nov 2017 22:04
de PierreH
It will be hard to remove this black part : good luck !
You are right about the "blue" screws placement

Re: Problème alignement Wild M3Z

MessagePosté: 17 Nov 2017 22:21
de wild_tom
PierreH a écrit:It will be hard to remove this black part

I've removed one of the grey epoxy seals by the soldering iron method. But there is no screw, my assumption was wrong.
I see no accessible screw nor possibly hidden screws I could accesss from the outside of the microscope...

PierreH a écrit:good luck!

Thank you.

Re: Problème alignement Wild M3Z

MessagePosté: 19 Nov 2017 11:08
de wild_tom
This morning I found 3 small holes at the white gear wheel.

M3Z_1_of_3_holes.jpg
(1 of 3 holes)
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When I slided in a thin 1,5mm drill and turned the gear wheel, I found 3 positions (each 120°) the drill could be slided in a few extra millimeters - and the gear wheel was some kind of "locked".
So, I thought, there's a sort of threaded ring (with 3 holes) inside that holds the gear wheel to the black plate, that could be unscrewed by the locked gear wheel . :D

Re: Problème alignement Wild M3Z

MessagePosté: 19 Nov 2017 11:21
de wild_tom
I slided 3 drills into the holes, found the locking position, slided them in to the stop, locked internal ring and turned the gear wheel counter clockwise.

M3Z_holes.jpg
(3 holes)
Exif et Meta MicroCartouche M3Z_holes.jpg (150.42 Kio) Vu 1391 fois


There was a slight friction that decreased a bit while turning.
I turned about 10 turns counter clockwise, but friction didn't decrease more than it decreased after the first 1/4 turn.
The axial play of the gear wheel didn't increase (as it should, if there was a loose thread).
So something inside holds the ring from inside the microscope housing.

There must be a way to open the microscope housing... :(

Re: Problème alignement Wild M3Z

MessagePosté: 19 Nov 2017 12:28
de PierreH
Hi,

I sent an email to a friend who knows very well Wild/Leica stereomicroscope...

Re: Problème alignement Wild M3Z

MessagePosté: 19 Nov 2017 13:26
de wild_tom
Thank you, Pierre!
Merci beaucoup!