Thank you so much for this video. I opened my Helios 44m4 to clean it and for some reason I was not being able to reassembly it again. You just save me.

Thanks for posting this video. My problem was oil on the aperture blades but rather than disassembling the fragile aperture mechanism, instead I removed the oil by soaking the entire aperture mechanism (once it had been removed it from the lens block) several times in fresh quantities of "shellite" (a volatile organic petroleum distillate used for metal cleaning or as a stove or lighter fluid).

it was very helpful for my HELIOS-44-M-7 too. It would be even better in normal speed! thanks!

Brilliant ! Thanks for sharing !

thank you very much for your videos :)

Thank you! :)

That is great!

Excelente video.

thanks :)

Thank you! Very helpful as mine disassembled itself and I need to assemble it again but when I get to the end, when I screw the 3 on the sides, the aperture control gets stuck. If I lift it like half a mm (less than that) it works great. Any guess what I am doing wrong?

How made a centre of lens?

In my Helios 4 the little element in min. 6.01 is broken. I don't know any way to find it! Maybe also it's too expensive to buy. Finally i have to trash the lens?

Is this lense radioactive??

Nice video, thanks! I have problem with the assembly. At 6:00 you fix one of the small brass element with the two small screws. I think I have done exactly as on the video. But after I have fixed it, nothing happened - I turn the focus ring, but it does not lift up and down the lenses. I might make something wrong but I do not know what... I do it again and again, but no success. I tried to screw the focusing ring totally to the base element (5:30) - no movement allowed - but then the whole construction will be a static, moveless thing... Can somebody tell me what can be the problem?

What happen at 5:55. I can't skew the two elements