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Cleaning Nikkor H 85mm f1.8 ( assembling and disassembling)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Yesterday I received this legendary lens. According to the serial number, the lens belongs to the third versions of Nikkor H 85mm f1.8 lenses and was produced between 1968 and 1973 . lense seller noticed that the lens has a visible small particles of dust inside and aperture is stiff and needs cleaning. Meter coupling prong for a F mount cameras has been removed and replaced by an AI coupling device. All this above made this lens is very cheap at auction. When I took this lens from box, then i understand that it probably took part in all known local wars, since the lens was produced. As promised to the seller, lens was dirty, with dust inside, planty of wear and paint loss and with stiff aperture. Its okay, I thought, that a lens did not smelled of napalm in the morning!
I had an old, right-sized set of cheap screwdrivers worth about 3 dollars and a set of tools for the car. This is good - I thought. Perhaps those, who are repairing this lens before had only a Ka-Bar knife. aperture ring was stiff - well, It really stuck. Only powerlifting champions could turn this ring. And only focusing assembly worked well (Thanks to Ka-Bar).
5:13PM, 17 December 2008 PDT (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Becouse aperture ring was stuck - i started from the rear end of lens - unscrewed bayonet ring first (pic 01 #2). Then pulled out one smoll connecting screw from the side of the aperture dial and screwed it off (pic 01 #3). After that I pulled a stop-down mechanism rings (pic 01 #4) . It was cleaned and lubricated.
Nikkor 85mm cleaning 01
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

The next was a optical assembly. I pulled off setscrew ( was a realy small - Just for 3 dollars screwdrivers set ) and unscrewed name ring (pic 02 #3). Then pulled optical assembly and unscrewed stop-ring and removed first lens from front group. I should notice that the on inner surface of the inside barrel grows so unusual microorganisms, that they formed a colony, the study of that could lead to the Nobel Prize of the year for Microbiology. In view of the fact that I do not want the prize, I cleaned and lubricated barrel (pic 2 #2) ... Goodbye - microbes... and Nobel Prize!
Nikkor 85mm cleaning 02
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Next step was the same - unscrewed another stop-ring and pulled off front lens groupe (pic 3 #5). Inside of this lenses I found a little dust particles - work for blower. Then i cleaned aperture blades without disassembly diaphragm mechanism (pic 3 #2) .
Nikkor 85mm cleaning 03
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Next step - unscrewed rear lens by hand only - no tools needed (It depends on how expensive manicure on your fingers) (pic 04) . Now all staff going back until... If you disassemble the Nikkor 85mm lens first time, then do what shown in pic 04 . Well, just temporarily install a stop-down mechanism rings on top of the rear side of the optical assembly.
Nikko 85mm cleaning 04
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Make sure the aperture blades work properly (Do not damage the spring in the stop-down mechanism). Make sure that the first aperture linkage fork properly lines up with diaphragm lever and second fork lines up with second diaphragm lever (manual) (pic 05). An make sure that the your girlfriend is not found someone else for this evening.
Now - pull of the stop-down mechanism from the optical assembly. And start to assembling lens from front end. But before you put optical assembly in to mount barrel push the second diaphragm lever in to far-right position (pic 05) !

Nikkor 85mm cleaning 05
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Put the optical barrel carefully inside the mount barrel. Then gently twist the frontal stop ring and name ring on right place. Do not forget the smoll setscrew on side of name ring - make sure that the setscrew in diple inside of the name ring (the same like before disassemle). Otherwise - you can't use focused mechanism.

Now time for fun! Rather, it is the most important procedure of all that has been described above. When i did it - It reminded me deactivation of anti-personnel mine in the mine-explosive class at military school. When the front of the lens will be installed at the previous location, you have to establish a stop-down mechanism. For first step - screw aperture dial back to proper place and set aperture at f1.8 . According to my research in internet, the majority of those who assembled the Nikkor H 85mm lens for the first time, made the same mistake - when they putted stop-down mechanism ring on to rear end of barrel and lined up first diapragm lever against first aperture lincage ring's fork (auto) they forget to do the same with the second lincage ring's fork (manual) ! In this cause the diaphragm does not work manually! Make sure that the second lincage ring's fork in line with second (manual) diaphragm lever and with top pin on dial ring. I used a sewing needle to positioned in line second fork, diaphragm lever and small hole on dial aperture ring. (It closely reminds the process of removal of the fuse on an anti-personnel mine. ) If you did everything correctly, the diaphragm will work manualy and by drive. Now secure stop-down mechanism with the three setscrews. Last move - put the bayonet ring on to rear end of the barrel and secure it with screws.
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

You are set now!
Congratulations!
Now you can feel free to jump on the Oprah's couch, as a Tom Cruse...
When I assembled the lens, I did the first test shot. It was dark and foggy ...
Foggy Night
ages ago (permalink)

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Dennis Dietz says:

Fantastic!!! And funny too. Thank you.
ages ago (permalink)

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RadioFreeCalifornia is a group administrator RadioFreeCalifornia says:

DeusX, Thank you for the excellent tutorial on the 85mm. That's a sought after lens here and your well documented article is sure to be useful to many people. You don't find this stuff just anywhere...
Don't worry about the germs, The Nobel committee only hands out money, but never an 85mm 1.8 Nikkor....
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Thanks! :))
ages ago (permalink)

absurd trees [deleted] says:

DeusXFlorida Great write up! This is one of those lenses I'd like to buy someday...
ages ago (permalink)

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AbeDinMerbau says:

DeusXFlorida , Thanks for sharing. I own one of this lens, It is not cheap even for non AI. I will remember this thread should I wish to DIY.
ages ago (permalink)

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DeusXFlorida (11,059,330 views) - thanks guys! says:

Thank you p912s and AbeDinMerbau!
AbeDinMerbau - I bought this lens at an eBay for just 57 dollars with delivery. The price was so low because of the physical condition of the lens. But I'm not concerned about the condition of the outside barrel . For me most important that the seller has guaranteed the excellent condition of lens glasses. And after all this work lens looks almost like brand new... :)
ages ago (permalink)

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natures_mathematics says:

Good job, great post as well :o)
ages ago (permalink)

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fuadi_z says:

I did the DIY conversion for this lens but that was an easy job. I've never thought about doing this far, but with this tutorial, I think I will do it sometimes.
thanks and great job there, I think we should expect more threads like this in in this group.
Originally posted ages ago. (permalink)
fuadi_z edited this topic ages ago.

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VTHokiEE06 says:

I just picked up a 85mm f/1.8 K version. It looks beaten up, but aside from a few small scrathes on the rear element, the glass is in great condition. I played around with it a little yesterday and the focus ring feels a little loose to me. I'll probably just live with it and learn to use it that way, but how difficult is it to tighten? Is the K version somewhat similar to the H in dissassembly?

My copy seems pretty decent wide open (but getting focus right on is another story). I haven't had a chance to try it stopped down yet though, but I'm really looking forward to using this lens.
ages ago (permalink)

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