Lens repair: Nikon Nikkor 50mm f/1.4 Ai-s full service

Hello friends,
Today, I present to you the complete service of everyone’s favorite vintage lens, the Nikkor 50mm f/1.4 AI-s. I got this copy very cheap because of stiff focusing ring, also, the previous owner tried to fix the lens, but wasn’t able to reassemble it properly.
DONATION:
If you find this video useful, informative and adds value to you (and possibly saved, or made some money by repairing the camera or lens), then consider donating to the channel:
paypal: paypal.me/DiyExtravaganza1?lo...
keywords: Nikon lens repair, Nikkor lens repair, Nikon 50 1.4, Nikkor 50 1.4, Nikon 50 f1.4, Nikkor 50 f1.4, Nikon 50 f/1.4, Nikkor 50 f/1.4, Nikon 50mm 1.4, Nikkor 50mm 1.4, Nikon 50mm f1.4, Nikkor 50mm f1.4, Nikon 50mm f/1.4, Nikkor 50mm f/1.4, stiff focus ring, blocked focus ring, nikon CLA, nikkor CLA, nikon disassembly, Nikon AI, Nikkor AI, Ai lens, AI lens, lens repair, fungus cleaning, fungus removal
Some useful stuff (I’ll get a small commission if you order thru any of the links):
Optical cleaning paper: amzn.to/2HXBgYI
Optical cleaning fluid: amzn.to/323HFci
Rubber tools: amzn.to/3mEcdco
Lens spanner: amzn.to/35VCYSL
JIS screwdrivers: amzn.to/3mC06MQ (This set has J000, J00, J0, J1)

[@staszibliuk]

I repaired my lens with this video. Thank you, man

[@diyextravaganza]

Cool, best way to say thanks is to recommend the channel to all your friends. Cheers.

[@2005nostalgair]

Thank you for these videos ... I hope to be able to do something like yours for other lenses !

[@diyextravaganza]

You'^re welcome, and you can always ask if you need advice. Cheers.

[@Patmclean232]

I have this lens, it’s one of my favorites!

[@diyextravaganza]

yep, great lens !

[@dandruff9244]

Excellent hopefully i can fix mine

[@diyextravaganza]

Hope you manage. Regards.

[@user-ju9hg9er8w]

Buen video 🖤

[@diyextravaganza]

Gracias Mikel ! Un abrazo.

[@leolaps]

I am having problems to assembly this lens because I did not made the marks you did at 4:57 (the unscrewing was faster than I though and I could not fin that point anymore in my lens). Any tip on how can I find this point? It looks really hard to put then together, even with a lot of white grease. Thank you, love your channel, mate!

[@diyextravaganza]

Hi Leo, that's unfortunate, the only way to get it back right is to do trial and error. Start by setting the focus ring to infinity, put some painter's tape on the barrel and mark in red each time the point helicoid gets in, so you can proceed by elimination until you reach the right one. Cheers.

[@diwi7659]

Hi, nice video, is this the same way to disassemble the Ai version (not Ai-s)?

[@diyextravaganza]

Hello, I made a video on the Ai th-cam.com/video/UaDlGK7mYgA/w-d-xo.html

[@samsen3965]

I have a Topcon with a frozen focusing ring. You did very well here with this Nikkor but this is beyond my capability and if do on my lens, I may damage something. Do you accept a repair service on old manual lenses to unfreeze the focusing helicoid ring?

[@diyextravaganza]

Yes, that can be done, depending on your location, not worth if it is going to cost more in shipping and repair than the lens itself, or giving it to a local repairman.

[@truonghoangnhan110]

I opened, clean and regreased both the inner and outer helicoid but it is still very stiff, any idea why?

[@diyextravaganza]

The hardness is it regular? or variable?, if variable, maybe one of the rings is deformed. Do the rings turn freely independently?

[@RivieraUnivox]

The helicoid is screwed all the way down and fused it will not turn out at all. I have the lens fully disassembled, I was able to remove the optical block from the helicoid but not able to remove the helicoid from lens body. Do you have any suggestions? I'm not even sure what direction I should be turning it, I assume counter clockwise?

[@diyextravaganza]

Hi, if it is really blocked, I recommend to strip parts as much as possible and then add some lighter fluid to disolve the old grease. About the direction, by memory, counter clockwise, but I may be wrong. Cheers.

[@pabloherreraherrera8260]

hi, i have the same lenses. the mine dont sound the "click when you move the diaphragm, so research. the ring of the diaphragm isnt the original of this lenses. so, can you help me? i dont know how, but. please, is so incomode for the tact:(

[@diyextravaganza]

did you check if the flat spring part is there?