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CV 35mm Ultron Loose Barrel Fix
Old 05-14-2009   #1
plrbear
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CV 35mm Ultron Loose Barrel Fix

Hi guys! I recently had an issue with my 35 Ultron, where it developed a loose barrel from the front of the lens to right before the focusing ring.

Couldn't find anything here, so i thought I'd share my documentation on the fix.

Hope this helps someone out there. Images have been posted further down this thread.

Last edited by plrbear : 05-26-2011 at 17:22.
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Old 05-14-2009   #2
payasam
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Thank you. I hope I don't need the information but I do have a 35mm Ultron.
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Old 05-14-2009   #3
Kozhe
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Thanks!

I have this problem and also the focus ring is kind of loose in mine, moving front and bakwards. Hope to find a fix for that too.
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Old 05-14-2009   #4
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This has been reported before, with a fix as well. Something to do with set screws.
Thanx to digitalintrigue's search gizmo:
http://www.rangefinderforum.com/foru...ead.php?t=1778
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Old 05-15-2009   #5
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Quote:
Originally Posted by laptoprob View Post
This has been reported before, with a fix as well. Something to do with set screws.
Thanx to digitalintrigue's search gizmo:
http://www.rangefinderforum.com/foru...ead.php?t=1778
Thanks for the heads up. Did a search but it didn't come up for some reason. In any case, I think the pictures will help a little more.
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Old 05-21-2009   #6
StoneFree
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Thank you. My Ultron is now as good as new.

pe
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Old 05-21-2009   #7
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The screws on my Ultron are tight as hell!! Im completely unable to do this since I started to wear out the screw heads...

Moreover the focus ring moves front and backwards like 2mm. Even my fsu lenses are more solid. A killer performer anyway.
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Old 05-21-2009   #8
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Photos are a great help. Bookmarked this for future reference. Thanks!
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Old 05-23-2009   #9
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Quote:
Originally Posted by Kozhe View Post
The screws on my Ultron are tight as hell!! Im completely unable to do this since I started to wear out the screw heads...

Moreover the focus ring moves front and backwards like 2mm. Even my fsu lenses are more solid. A killer performer anyway.
Focus ring moves! Ok...that's a new one man. One day when i do encounter that, I may just update my information.
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Images Have Been Posted!
Old 05-26-2011   #10
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Images Have Been Posted!

My apologies guys. I took my website down some time back, and totally forgot about this link. The images are now hosted in a more permanent place, and I hope this helps those who are currently looking for the fix.






















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Old 06-22-2011   #11
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I could access the last part directly from the picture no 1. No need for removing the aperture ring.
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Old 11-01-2016   #12
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Does anyone have any advice on how to get the faceplate off? I can unscrew it with my fingers but it doesn't come all the way off?

Thanks!
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Old 5 Days Ago   #13
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I'm in the middle of adjusting my LTM Ultron right now, but have stopped because I found that my screwdrivers aren't small enough to go into the second internal plate holes.


The detent ball bearing was caught in the aperture ring at first, then it slipped out and fell on to the floor. UGH! It took several minutes and a torch to find it. Now I have to work out how to set it back in the lens and put the aperture ring back on.


Tomorrow morning, I'll buy a new set of micro screwdrivers. Not cool. But if I get this done, the front ring won't be wobbling around any more, and I can fully enjoy this lens.
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Old 5 Days Ago   #14
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If you plan on doing stuff like that again, don't buy normal micro screwdrivers. They will slip and/or degrade the screw heads on Japanese equipment. Order some JIS screwdrivers.
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Old 5 Days Ago   #15
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Quote:
Originally Posted by retinax View Post
If you plan on doing stuff like that again, don't buy normal micro screwdrivers. They will slip and/or degrade the screw heads on Japanese equipment. Order some JIS screwdrivers.

Wait, really? What the heck are JIS screwdrivers?? I'll see if the electrical shop I'm going to has them.
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Old 5 Days Ago   #16
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Quote:
Originally Posted by Archiver View Post
Wait, really? What the heck are JIS screwdrivers?? I'll see if the electrical shop I'm going to has them.
JIS = Japanese Industrial Standard screwdrivers. They have blade sides that do not taper but fit square to the slots in the screw head, and tend not to "twist out" of the slot under lateral force; more effective in use.

Hard to find in US stores but easy enough to get on the Internet
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Old 5 Days Ago   #17
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Thank you, gentlemen. Hopefully, the shop I'm going to has some.
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Old 5 Days Ago   #18
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Quote:
Originally Posted by Archiver View Post
Thank you, gentlemen. Hopefully, the shop I'm going to has some.
I can recommend the Vessel JIS screwdriver set. Available from Rhino Tools Aus and pretty affordable.
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Old 4 Days Ago   #19
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Nick, Thanks for the Rhino Tools resource. Terrific for us in Australia.
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