cant remove the aperture ring from jupiter 8

[lubitel]

Hello all,

I am trying to remove the aperture ring, and I can't. I unscrewed all visible screws, and even the scale meter, but it still doesnt come off. Now, I did look at the webpage where matt denton describes the same procedure, and it doesnt sound like it should be any problem at all. (http://homepage.mac.com/mattdenton/photo/cameras/zorki_4.html)
What am I missing?

 

[Kim Coxon]

Hi,
Is this a black or a silver J8? They are put together differently.

Kim

 

[lubitel]

silver on zorki 3s

 

[Kim Coxon]

Unscrew the whole front group (make sure you don't lose the spacer). There are 3 tiny screws around the aperture ring. I take these out as if I just loosen them, they get lost. The aperture ring should now unscrew backwards, away from the front of the lens.

Kim

 

[lubitel]

Kim, I already unscrewed 9 screws alltogether: 3 from aperture, 3 from scale ring and another 3 underneath the scale ring. what do you mean by the whole front group? should I unscrew more? there is another set of 3 screws on some kind of black inner "barrel"

 

[lubitel]

Oh, now I see what you mean by screwing the lens down! and now I see the 2 screws underneath that would enable me to remove the front element.

 

[lubitel]

do I need to remove this front element just to put the grease under the aperture ring?

 

[Kim Coxon]

I would take both front and rear groups off so you don't end up geting grease on them. Be carefull with the rear group, there is another spacer under there to get lost. One of the problems you have is that you will need to clean the old waxy grease out. If you look at the attached photo the area you need to clean and regrease is behind the white circle. (excuse the quality, a very quick photo). This may mean you need to take the diapraghm out. This is relatively easy but a so and so to get back. However onless you separate the two rotating bits, you won't be able to clean or grease it properly.

Kim

 

[lubitel]

Kim, thanks so much for all your help today, I think I may be able to pull this thing through. 🙂

 

[Kim Coxon]

Anytime 🙂

Kim

Kim, thanks so much for all your help today, I think I may be able to pull this thing through. 🙂

 

[derevaun]

Egad! So you just grab the front and turn it off, without removing any of the rings? Good god, I think I get it now.