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Nikkor 20mm 3.5 AiS
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PostPosted: Fri Jul 24, 2015 10:27 am    Post subject: Nikkor 20mm 3.5 AiS Reply with quote

Hello everyone! First time poster here!!!

I'm trying to repair an old nikkor 20mm 3.5 ais. The aperture ring is stuck and grinding on the interior and the shutter is blocked. I had sent this lens that was working perfectly to a shop to be lubricated and they returned me the lens like broken Sad.

I can't send it back since I've moved abroad so I'm trying to repair it myself but I cant get to the shutter and aperture mechanisms.

Can anyone please help me? I don't think I can remove the front ring ...

Thank you kindly,





PostPosted: Fri Jul 24, 2015 11:14 pm    Post subject: Re: Nikkor 20mm 3.5 AiS Reply with quote

luisfmoreira wrote:
Hello everyone! First time poster here!!!

I'm trying to repair an old nikkor 20mm 3.5 ais. The aperture ring is stuck and grinding on the interior and the shutter is blocked. I had sent this lens that was working perfectly to a shop to be lubricated and they returned me the lens like broken Sad.

I can't send it back since I've moved abroad so I'm trying to repair it myself but I cant get to the shutter and aperture mechanisms.

Can anyone please help me? I don't think I can remove the front ring ...

Thank you kindly,




Welcome to the forum,I hope someone may be able to help you soon.


PostPosted: Sat Jul 25, 2015 9:45 am    Post subject: Reply with quote

here Click here to see on Ebay.de
you can order a reprint of the repair manual
nobody knows what they have done to a working lens to unrepair it, but it is better to have proper info which part is o.k. and which is missing before you try to get it back to work