Jupter 9 lens question

[gudlagoba]

I bought a Jupiter 9 last year and except for a stiff focus ring, it was a great lens. But the focus issue has been real turn off so I finally decided to get into it and thanks to the instructions on the Kiev Survival site, I cleaned out all the old junk, relubed it, put it all back together, did a rough check of the working distance and heaved a sigh of relief.
But to my dismay the improvement was not as dramatic as hoped for. I thought the focus ring would be silky smooth but it's not the case. It has definitely improved but there is still a fair amount of resistance and it gets more as I focus closer. It's tolerable until about 2m and then it gets pretty hard to turn.

So my question is, did I screw up somewhere or is this just the best I can get with this particular specimen?

Do you own a Kiev mount Jupiter 9 with silky smooth focus?

 

[laptoprob]

Did you get all the helicoids apart? On Kims site (pentax-manuals something) there is an extensive manual to take the lens apart for relubing.

 

[Kim Coxon]

The instructions on my site are for the LTM version. 😉

Kim

Did you get all the helicoids apart? On Kims site (pentax-manuals something) there is an extensive manual to take the lens apart for relubing.

 

[greyhoundman]

Sounds like too much lube got in the guide channels. That is where those blocks held with screws travel. When you get down the lower F stops, you are being held back by hydraulic pressure.

 

[gudlagoba]

Thanks for the replies.

Greyhoundman, I think you are right! I realized I had overdone the greasing when after putting it back together and turning the focus ring, I saw grease being squeezed out like toothpaste from the helicoid area. I turned it a few more times and wiped off all excess grease but there must have been a lot still inside.

But it seems to have gotten better after leaving it overnight so I'll wait a couple of days before opening it up again.