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07-27-2019, 10:28 AM   #1
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This happened while i was focusing with my helios.

So hello yesterday while i was taking some photos i felt the focus ring was a bit loose, but i didnt think it was something.
Skip later in the day while i was trying to focus and suddenly the front half detached from the rest.

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07-27-2019, 12:54 PM - 1 Like   #2
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Hmmmm...while some lenses may be partially disassembled in that way, I don't believe yours is one of them. Something is either missing or broken such that one of the focus helicoids is free to rotate complete out of mate. Is it safe to say that the lens has been converted to full manual aperture at some point? Below is a very long You Tube video for a full disassembly of the focus mechanism for lubrication. It may provide a clue as to what is not as it should be.


There is also a step-by-step guide for disabling the auto-aperture pin on the Manual Lens Forum that might have some clues. I suspect that your lens was reassembled without the two "fixing brass parts" mentioned in the text.
"Repair" How to - make Helios 44M-6 usable with N
QuoteQuote:
Now, remove those very little screws (red) and put the fixing brass parts out of the barrel -(blue)
The function of those parts is shown in the video. It may also be that the screw removed in the next step down might be the culprit.

I hope this helps.


Steve

Last edited by stevebrot; 07-27-2019 at 01:09 PM.
07-27-2019, 12:56 PM - 1 Like   #3
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There are (or should be) six screws behind the front trim ring - three hold the filter ring in place, and the other three hold the optical block in place within the focusing mechanism. My guess is that your lens has been serviced before and the screws holding the optical block in place weren't tightened properly (sometimes, less scrupulous folks only replace one or two of them after servicing ).

This video Steve posted will help significantly with disassembly and re-assembly
07-27-2019, 01:12 PM - 2 Likes   #4
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QuoteOriginally posted by BigMackCam Quote
This video Steve posted will help significantly with disassembly and re-assembly
Your comment regarding the keeper screws might be the cause.

I edited to add an additional link that might provide a few more clues. On that page is a photo that looks rather familiar...


From "Repair" How to - make Helios 44M-6 usable with N


Steve


Last edited by stevebrot; 07-27-2019 at 01:25 PM.
07-27-2019, 02:33 PM   #5
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Great thanks alot guys. I will start the disassembly tomorrow following the video!
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