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cannot remove screw to clean inside

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/17/2010 at 11:32
qwertyjjj View Drop Down
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I need to clean the lenses but am having trouble removing this screw to get inside the binoculars.
They are fairly old so am wondering if the metal is just weak, it keeps breaking when I try to unscrew it.
Not sure whether it is the small eye lenses with dirt on them or the prism.

http://www.sidekicker.net/a.jpg
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/17/2010 at 11:40
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Originally posted by qwertyjjj qwertyjjj wrote:

I need to clean the lenses but am having trouble removing this screw to get inside the binoculars.
They are fairly old so am wondering if the metal is just weak, it keeps breaking when I try to unscrew it.
Not sure whether it is the small eye lenses with dirt on them or the prism.

http://www.sidekicker.net/a.jpg
 
Try a 3lb hammer...
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/17/2010 at 12:03
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Laugh Above
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/17/2010 at 13:35
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Originally posted by qwertyjjj qwertyjjj wrote:

I need to clean the lenses but am having trouble removing this screw to get inside the binoculars.
They are fairly old so am wondering if the metal is just weak, it keeps breaking when I try to unscrew it.
Not sure whether it is the small eye lenses with dirt on them or the prism.

http://www.sidekicker.net/a.jpg
 
You're kidding, right.
 
Stay the h#!! out of the inside of a binocular unless you know what you are doing, which you obviously don't.
 
I smell troll.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/17/2010 at 14:04
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If do get inside, polishing with 400 grit sander paper and acetone for lubricant should put an end to your problems.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/17/2010 at 14:16
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 OR just send them to Kickboxer.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 03:18
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Originally posted by lucytuma lucytuma wrote:

If do get inside, polishing with 400 grit sander paper and acetone for lubricant should put an end to your problems.


The dirt is on the inside so how else am I supposed to clean them?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 03:33
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http://www.birdwatchersdigest.com/site/optics/cleaning_optics.aspx
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 10:31
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Perhaps you overlooked the most important sentence:Wink
 
"The absolute safest option, especially if your model is not waterproof, is to send it to a professional to have it cleaned."
 
Here's a professional for you to contact:
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 11:00
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Followed by:
However, this won't be cheap. In fact, it may actually cost more than your instrument is worth.

What is the issue with opening it up? It's an old pair, I'd like to clean and do it myself. I already opened up the objectives and cleaned it, no issue, I just need to get the ocular open as that is the part with the dirt, which I can see move when I twist them round.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 11:22
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Speaking as someone who used to service and clean Microscopes with 200-400X capability.  Unless you are use a full laboratory clean room and very expensive lint free cleaning materials you will introduce hundreds of times more contaminates than you will remove trying to clean it yourself!!!
 
Unless your in love with them.... buy new!  Otherwise send them back to factory but don't hold your breath...


Edited by budperm - November/18/2010 at 13:58
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 11:47
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There are big black dots in the oculars, it can;t get worse than that.
I appreciate the concern but I'm not going to pay for it for some 50 yr old binoculars when I can give it a go cleaning them or buy some new (and better) ones.
So, any idea son how to open it when the screw seems to be damaged as in the picture? There is a screw at the other end but doesn;t seem to do much.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 14:01
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Oy Yeh!!!
 
Why would you want t o be messing with the hinge joint.  I thought you were trying to clean teh eye pieces ?!?!/  Please give up while your behind!Loco
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 14:08
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Well, I guess you were serious after all, so I herby retract the troll comment. Smile
 
If this is an old porro binocular, remove the screws from the faceplate.  You generally get into the oculars that way.  I admire the curiosity, but just be prepared to fubar them.  Been there done that.  It was an interesting experience, but I really don't know if I learned anything.
 
If the foreign material is fungus, be prepared to find it has etched the glass and there is no way to clean that.
 
Get what educational value there is, but be prepared to get a new binocular.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 14:18
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Good advise Steve.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/18/2010 at 15:07
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Originally posted by qwertyjjj qwertyjjj wrote:

So, any idea son how to open it when the screw seems to be damaged as in the picture?
I tried the link that you provided, it does not work.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/20/2010 at 12:14
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Any ideas on how to open it then?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/20/2010 at 12:19
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Originally posted by lucytuma lucytuma wrote:

Good advise Steve.


On these, if I unscrew the screws on the faceplate, it looks like the oculars are secured on top of that though.
On the left one, if I adjust the ocular focus, the dirt doesn;t move, on the right one it moves so does that mean the left one has the dirt inside or possibly on the prism?
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: November/20/2010 at 14:42
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OK, finally got you picture up.  You may well have to loosen that center screw.  Look for a small screw somewhere in the ocular that looks like it might attach the eyepiece to the tube coming up from the faceplate.  If that comes out, you may have to get the screw in the picture out and the ocular assembly might lift free.
 
The problem is that the screw slot in the picture looks messed up beyond redemption.  You may be able to refile a wider slot, not deeper, just wider.  Going deeper gets you nowhere.  Just wider till the small file just fits.  Gently use the file as a handle to loosen the thing.
 
Now understand, I MAKE NO CLAIMS ABOUT KNOWING ANYTHING ABOUT BINOCULAR REPAIR.
 
Having said that I think you may have too much to handle there.
 
The moving spot is likely on a lens and the stationary spot is likely on the prism.  If you succeed in getting to the prism assembly, that will take serious equipment and know how to disassemble, clean, and in particular to REASSEMBLE.
 
I'm now out of my depth.  I wish you good luck.  I also suggest (but you probably have already) that you do a Google search.  You might find some sort of guide.
 
What make and model are these binoculars?
 
 


Edited by Klamath - November/20/2010 at 14:46
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: December/19/2010 at 10:21
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Hi quertyjjj,

Just came across this thread. If it helps, Deutsche Optik has Field Manuals that are helpful.
http://www.deutscheoptik.com/catalog/product_info.php?cPath=21&products_id=78
http://www.deutscheoptik.com/catalog/product_info.php?cPath=21&products_id=80
Note that these show tools that you probably do not have.
Also note that the position of the lenses relative to one another may be critical, so mark the edge of the optical assembly with a marker before taking anything apart.
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