Problème alignement Wild M3Z

[wild_tom]

Which screw(s) to remove?

M3Z_3.jpg (137.7 Kio) Vu 6575 fois

[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.

bottom

Image3red.jpg (160.06 Kio) Vu 6533 fois

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...

[wild_tom]

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...

[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.

Hidden screws?

M3Z_hidden_screws.jpg (138.31 Kio) Vu 6398 fois

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

[PierreH]

It will be hard to remove this black part : good luck !
You are right about the "blue" screws placement

[wild_tom]

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...

good luck!

Thank you.

[wild_tom]

This morning I found 3 small holes at the white gear wheel.

(1 of 3 holes)

M3Z_1_of_3_holes.jpg (90.21 Kio) Vu 6425 fois

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 .

[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.

(3 holes)

M3Z_holes.jpg (150.42 Kio) Vu 6420 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...

[PierreH]

Hi,

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

[wild_tom]

Thank you, Pierre!
Merci beaucoup!