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wlewisiii
12-06-2004, 17:24
Good evening,
I have a J12 for my Kiev that is quite good optically, but near infinity, the focus gets quite stiff. Is there any place on the web that tells how to go in and, I would presume, clean and relube this lens? I've found info for other classic russian lenses, but not for the J12.

I am tempted just to "live with it" as I am quite happy with the lens otherwise. Is fixing this something that could screw up this otherwise pretty good lens?

Thanks!

William

peter_n
12-07-2004, 05:25
William I did a search and could not find repair instructions for this lens. You might want to try asking on a specialist Russian camera forum like beststuff.com (http://www.beststuff.com/forum/index.php?f=25). I would think that fixing it should not cause any problems.

pshinkaw
12-07-2004, 05:55
Kyle Cassidy has this part of his webpage describing a Jupiter-12 repair.

http://www.asc.upenn.edu/usr/cassidy/leicaslacker/dis/index.html

There are probably better ways to do it though.

-Paul

Laika
12-08-2004, 02:10
I have a J12 (Kiev fit) that I bought cheap off ebay with a slight focus ring dent that was binding. I ended up stripping it down all the way and repaired and relubed it. The only real problem is if you donít get the focus threads right putting it back together. If you've had lenses apart before I'd place the J12 in the easy to do basket. If youíre serious about relubing yours I'd be willing to strip mine again and take some pics for the repair section here... kind of a DIY thread... Time permitting... Interested?

Azinko
12-08-2004, 04:02
"....... If youíre serious about relubing yours I'd be willing to strip mine again and take some pics for the repair section here..."

That is a really kind offer!!........which William could do well to take up.

My problem with J12 is the aperture 'ring' or plate which having no clicks is all too easy to move during fast handheld use. From your memory, is it possible to add a tiny ball bearing behind the plate or effect some other cure to make the aperture control more 'settable' and positive??

wlewisiii
12-08-2004, 04:46
Laika, I would be greatly appreciative if you take the time to do that. It would be an immense help to me and probably others as well.

William

Laika
12-08-2004, 08:25
Ok I'll see what I can do on the weekend, stay tuned.

Laika
12-13-2004, 06:55
William,

I stripped and photographed my Kiev Jupiter 12 for you tonight, give me a few days to write something up and edit the pic's to go with it. The only tools required are a few screwdrivers (small to very small) and a lens spanner (or a home made equivalent, long nose pliers with the tips ground to fit would work in a pinch)

Laika
12-14-2004, 05:05
Originally posted by wlewisiii
Laika, I would be greatly appreciative if you take the time to do that. It would be an immense help to me and probably others as well.

William

Here is a link to the thread I just posted in the repair section
http://www.rangefinderforum.com/forums/showthread.php?s=&postid=29741#post29741
I hope it helps :)

Laika

jdos2
12-14-2004, 05:22
Beautiful work, Lalka!

denishr
12-14-2004, 06:01
Laika, this is excellent! I wish I had this before I tried to adjust my J12 - it would have been much easier.
In any case, this will be an excellent resource for anyone wanting to do any kind of work on their J12.
Thanks a million - you're great!
Denis

wlewisiii
12-14-2004, 06:13
Excellent! That is a very well done explaination of how to do the J12. With luck I'll get it printed out and give it a shot in the next few days.

Thank you very much.

William