Rear lens cap repair

[fgianni]

Today I bought a J-8 with a Zorki 4K as a rear lens cap.
It trned out tha the Zorki is in much better shap than thought, the only thong is the shutter that is sticky at the low speeds (at 1/30 os slower sometimes it does not even close completely.
Is there an easy way to fix this?
Can you point me to some step-by step instructions on shutter servicing for the Zorki 4K?

Thanks

 

[Kim Coxon]

Hi,
Try this link http://rick_oleson.tripod.com/index-58.html
The problem is usually caused by dirty spindles under the timing mech (where you select the speed) and sometimes a dirty return arm (mainly used for the B setting. Rick also suggests the gears but I find that this tends to be the cause of jams). Worth a try if the first one doesn't work. A small application of ronsonol works well but if it comes back, it may need more thorough attention.

Kim

 

[fgianni]

Thanks for the link Kim

Looks a kind of job beyond my current capabilities, maybe in a few months time, if I start practicing luing lenses and similar simple jobs.

Are you aware of websites that explain how to calibrate FSU lenses?
I know you are very kindly doing my J-9, but I also have a J-8 and an I-61 to do, and plan to get a J-3, so I think it would be better if I learn how to do my own instead of exploiting fellow RFF members.

Thanks

 

[reagan]

This will get you going on the I-61.

http://homepage.mac.com/mattdenton/photo/cameras/industar_relubing/index.html

 

[Kim Coxon]

Hi,
I took a series of photos whilst doing the I61's, L/D's and half way through doing the J8's. I will start your J9 tonight and will be taking photos as I go. As soon as I get some time (and people stop sending mr things to do) I will write it all up in PDF format and put it on here and my website. As far as the J3 is concerned, Brian did a great job of explaining how to do those. http://www.rangefinderforum.com/forums/showthread.php?t=13670&page=2&pp=20&highlight=jupiter-3

Kim

 

[fgianni]

and people stop sending mr things to do

Well you could start charging a (reasonable) fee for your work, that way I could send you my lenses without feeling guilty 😉

 

[Kim Coxon]

What's to feel guilty about. What goes around, comes around. It doesn't cost me anything and helps to "pay" for all the favours and odd bits that people have sent me.

Kim

 

[reagan]

I will write it all up in PDF format and put it on here and my website.

I knew someone was working on that here and when I posted earlier, I couldn't remember who it was or where I'd read it. Good for you KIm.

 

[fgianni]

What's to feel guilty about. What goes around, comes around. It doesn't cost me anything and helps to "pay" for all the favours and odd bits that people have sent me.

Kim

Be careful or I may decide to send a J-8 and a J-3 your way LOL