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Aanything
Joined: 27 Aug 2011
Posts: 2187
Location: Piacenza, Italy
Expire: 2014-05-30
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 Posted: Wed Jan 02, 2013 9:36 pm Post subject: CZJ Tessar Zebra aperture re-assembly |
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Aanything wrote:
Some days ago I bought a tessar with fungus for almost nothing.
It arrived, fungus was little overall, but most of it was gathered in a spot around the center of the sencond lens from the front.
Since it had slow blades and not even focus damping, I decided to completely disassemble it for cleaning and lubing.
Everything went ok, glass now looks clean, and everyting seems well lubed, but I can't find how to put back again the aperture mechanism.
It looks different from all the guides I found on this forum, mine is a zebra version, with a kind of switch that, when pushed, stops the lens down (but when released it comes back, wide-opening it, so it's not like the a/m switch on my pancolar).
This is the point I reached so far:
I understand that part 1. goes into hole 3. with the spring towards the lens' front.
1.'s part without the spring should pass in the little hole you see in part 2. (the hole is the part projecting a shadow).
Now, what I don't understand: 1. should somehow interact with 4., keeping the part where the arrows end lifted towards lens' back, but it doesn't, and I don't understand how the aperture ring rotation is coupled with the aperture mechanism.
If anybody knows this particular version of the lens, or can guess how to do that, it would be great.
(sorry for the pic, it's quickly taken with my phone)
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Aanything
Joined: 27 Aug 2011
Posts: 2187
Location: Piacenza, Italy
Expire: 2014-05-30
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| Posted: Wed Jan 02, 2013 9:49 pm Post subject: |
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Aanything wrote:
ok, I found how to have the aperture ring actually control the aperture, and that's good, but still no idea on how to put back in place (and at work) part 1.
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twinquartz
Joined: 11 Jun 2012
Posts: 316
Location: Sweden
Expire: 2013-10-29
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| Posted: Thu Jan 03, 2013 8:13 am Post subject: |
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twinquartz wrote:
PM sent. |
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enliten
Joined: 20 Sep 2011
Posts: 201
Location: Perth, WA
Expire: 2014-07-03
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| Posted: Thu Jan 03, 2013 9:41 am Post subject: |
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enliten wrote:
I got this lens a while ago, I removed the pin and am struggling to get the thing back together... It has sat there in pieces for a while now, because every time I try to re-assemble I get too frustrated.
Since I have found another copy of the lens and has the same problems, stiff focus, dirty elements.
I really don't want to take the second lens apart incase I can't get it together like the first one.
I think I will eventually end up taking them to a professional to get them serviced 
Do any of our users here offer cheap lens cleaning / reassembly services?
-Ben
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www.craftedbyben.com
Digital: Canon EOS 7D
Film SLRs: Zenit 122, Nikon F55, Nikon FM2, Pentax Spotmatic, Pentax ME Super, Pentax K1000, Minolta SR1
Rangefinders: Konica Auto S2, Zeiss Ikon Contessa LKE, Zeiss Ikon Continette, Zeiss Ikon Ikonta 521/16, Fed 5B
50's: Super Takumar 50 f1.4, Helios 44-m6,, Minolta MD 50 f1.4, Meyer Optik Oreston 50 f1.8, Olympus 50 f1.4, Industar 55 f2.8 (RF), Jupiter-3 50 f1.5 (RF), Yashinon DS 50 f1.4, Zeiss Jena 50 f2.8, Zeiss Pancolar 50 f1.8
Med Tele: Jupiter-11 135 f4 (RF), Mamiya 120 f4 Macro (645), Meyer Optik Trioplan 100 f2.8, Jupiter-9 85 f2
Tele: Jupiter-21a 200mm f4
Wide: Rikenon 35 2.8, Rikenon 28 f2.8, Minolta MD 28 f2.8, Minolta MD 24 f2.8, Pentacon 30 f3.5, Enna Werk Munchen Lithagon 35 f4.5
Autofocus: Canon 50 1.8, Sigma 50 1.4, Tokina 11-16 2.8
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Aanything
Joined: 27 Aug 2011
Posts: 2187
Location: Piacenza, Italy
Expire: 2014-05-30
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| Posted: Thu Jan 03, 2013 10:27 am Post subject: |
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Aanything wrote:
| enliten wrote: |
I got this lens a while ago, I removed the pin and am struggling to get the thing back together... It has sat there in pieces for a while now, because every time I try to re-assemble I get too frustrated.
Since I have found another copy of the lens and has the same problems, stiff focus, dirty elements.
I really don't want to take the second lens apart incase I can't get it together like the first one.
I think I will eventually end up taking them to a professional to get them serviced
Do any of our users here offer cheap lens cleaning / reassembly services?
-Ben |
Mine now is back together and perfectly working, only I left out the auto stop-down pin, and the top switch doesn't do anything. Lens now is fully manual, that is what I needed for digital, but I'd like to know how to put it back in its original state.
If you want to close it like that and need some help, just tell me where are you stuck.
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