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MTO-11 helicoid cleaning / re-lubrication?
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PostPosted: Thu Mar 16, 2017 10:15 pm    Post subject: MTO-11 helicoid cleaning / re-lubrication? Reply with quote
I recently picked up a nice ЗМ-5СА and equally-good MTO-1000, both in excellent condition and great optically, but with very stiff focusing.

Based on information I found online, I've partially disassembled the ЗМ-5СА (taking the two halves apart), cleaned the threads on both halves and re-lubricated them, and I'm very happy with the result - the focus ring action is smooth and consistent throughout its rotation.

I now want to tackle the MTO-1000, but don't know if it's the same or similar procedure, or if there are any "gotchas" I should be aware of. I can't find any obvious details online, so I'm wondering if anyone here serviced their MTO-1000 focusing, and if so, can you offer any information or advice that would help me to get it right first time?

Many thanks in advance! Smile

Last edited by BigMackCam on Fri Mar 17, 2017 10:06 am; edited 1 time in total


PostPosted: Fri Mar 17, 2017 8:58 am    Post subject: Reply with quote
What is version of your MTO-1000? There is at least two different construction of first MTO-1000.


PostPosted: Fri Mar 17, 2017 10:09 am    Post subject: Reply with quote
My apologies, I stupidly mentioned my lens was the MTO-1000, when in fact it's an MTO-11 Embarassed

I've corrected the title of the post accordingly.

This is the version of the lens I have:

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