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Carlus
Joined: 08 Sep 2014
Posts: 3
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 Posted: Mon Sep 08, 2014 1:49 pm Post subject: Pancolar 50 2.0 disassembly (SUCCESS !!) |
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Carlus wrote:
Hello,
I really need an help. Last week i received a Pancolar 50 2 zebra m42 with stucked blades.
There are no screws on the back plate (where the mount is) and for this reason i'm not able to open it.
I've tried to turn counterclockwise the back plate but with no success. Infact, there is a little metal lever on the side (that fully open the blades) that prevent to turn the plate.
With regard to the front lens i've removed la name plate and the three metal rings that block the front lens...........but i'am not able to go further.
Thanks for any help
Last edited by Carlus on Wed Sep 10, 2014 7:49 am; edited 1 time in total |
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Langstrum
Joined: 16 Feb 2014
Posts: 351
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| Posted: Mon Sep 08, 2014 2:49 pm Post subject: Re: Pancolar 50 2.0 disassembly (HELP please) |
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Langstrum wrote:
| Carlus wrote: |
Hello,
I really need an help. Last week i received a Pancolar 50 2 zebra m42 with stucked blades.
There are no screws on the back plate (where the mount is) and for this reason i'm not able to open it.
I've tried to turn counterclockwise the back plate but with no success. Infact, there is a little metal lever on the side (that fully open the blades) that prevent to turn the plate.
With regard to the front lens i've removed la name plate and the three metal rings that block the front lens...........but i'am not able to go further.
Thanks for any help |
I disassemble several lenses but didn't have experience with this one. At least you should post some photos to show your current state, so someone can give you an accurate recommendation (and taking photos of every steps is also very important, too, because you will need to reassemble them and sometimes that's even more troublesome) 
_________________
Camera: Sony A7 mark III, A6300
AF Lenses:
Canon EF 50/1.8; EF 200/2.8 L, EF 200/1.8 L, EF 300/4 L Sony E mount SEL 50/1.8 OSS, SEL 16/2.8 Fuji X mount XF 35/1.4 R
MF Lenses: Peleng MC 8/3.5, 17/2.8 Samyang 14/T3.1, 35/T1.5, TS 24/3.5 ED, 85/T1.5, Polar 85/1.4 Auto Revuenon 28/2.8; MC 50/1.4 Vega11U 50/2.8 Carl Zeiss Tessar 50/2.8 (exakta mount) Auto Chinon 50/1.9 Zenitar ME1 50/1.7 Sears Auto Sears 55/1.4; Sears 135/2.8 Auto Yashinon DX 50/1.4; Tomioka 50/1.2 SMC Pentax 50/1.7; 50/1.4 Canon FD 50/1.4 S.S.C; 55/1.2 S.S.C; FD 50/1.2 L; FD 85/1.2 L; 85/1.2 S.S.C Aspherical; FD 80-200/4 L 300/2.8 S.S.C Fluorite FD 300/2.8 L FD 200/1.8 LCosina-S 50/1.2 Helios Helios 44 Chrome f/22, 44-2, 44-3, 44M-4, 44M-7 (58/2), Helios-40 85/1.5 Jupiter Jupiter-9 85/2; Jupiter-37A 135/3.5; Jupiter-21M 200/4 Nikon Ai 105/2.5 Tairs-3S 300/4.5
Voigtlander 15/4.5 Aspherical; Ultron 35/1.7
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mo
Joined: 27 Aug 2009
Posts: 8982
Location: Australia
Expire: 2016-07-30
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| Posted: Mon Sep 08, 2014 9:08 pm Post subject: |
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mo wrote:
I don't have the zebra Pancolar but I have the starwars 2/50 M42 and the back does unscrew..try unscrewing counter clockwise.Watch out for the spring under it that works the aperture (via that little side lever),it can spring out...it's a little tricky but simple.That is as far as I went so good luck and post up your findings and photos if you take any.
 Just re read that you tried counter-clockwise...perhaps need a little more force? But before you do that, is your lens Exakta mount and does it have any screws on the body near the mount?
_________________
Moira, Moderator 
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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Carlus
Joined: 08 Sep 2014
Posts: 3
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| Posted: Tue Sep 09, 2014 5:19 am Post subject: |
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Carlus wrote:
Good news,
I've finally opened the back plate with very strong force.
Later i will post the photos of the process for cleaning the blades, if i have success. |
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mo
Joined: 27 Aug 2009
Posts: 8982
Location: Australia
Expire: 2016-07-30
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| Posted: Tue Sep 09, 2014 5:24 am Post subject: |
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mo wrote:
I hope you have success. 
_________________
Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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Carlus
Joined: 08 Sep 2014
Posts: 3
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| Posted: Wed Sep 10, 2014 8:24 am Post subject: |
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Carlus wrote:
Last night i managed to disassemble the lens and clean the blades. It took me 30 minutes of work.
I describe the whole process with some pictures.
1) this is the back of the lens (there are no screws!)
2) back plate removed after turned it counter clockwise (with some force!)
3) some pictures of the back opened (there is a big circular ring that can be removed after removing the small spring)
4) the back of the lens after the big ring has been removed raising it above (the are no screw to turn)
5) unscrew the four screws and you can remove another block
6) now you can also remove the outer aperture ring (but it is not necessary to remove it)
7) view from above (there is a screw that moves the blades through the movement of the outer ring)
8 ) turning counter clockwise a ring you can remove the rear lens block (if you need to clean the lens, this block can be opened turning two other rings wich are around the rear external lens)
9) now you have direct access to the blades in order to clean it
I have cleaned the blades (without disasseble them) with a cotton swab and alcohol.
But i've also noticed that the aperture movement was slow because the aperture spring was loose (the sprins is visible in the left side of the picture in number 7) ). So i have added a second spring in the same place (i have not other spring so i decided to use the spring of the big circular ring in picture number 3).......in fact i don't need the movement of this ring wich fully open the blades because i will use the lens on a nex/Alpha camera with adapter).
Everything is now fully working and perfect!! |
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mo
Joined: 27 Aug 2009
Posts: 8982
Location: Australia
Expire: 2016-07-30
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| Posted: Wed Sep 10, 2014 12:22 pm Post subject: |
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mo wrote:
That is good news and thanks for the photos.
_________________
Moira, Moderator
Fuji XE-1,Pentax K-01,Panasonic G1,Panasonic G5,Pentax MX
Ricoh Singlex TLS,KR-5,KR-5Super,XR-10
Lenses
Auto Rikenon's 55/1.4, 1.8, 2.8... 50/1.7 Takumar 2/58 Preset Takumar 2.8/105 Auto Takumar 2.2/55, 3.5/35 Super Takumar 1.8/55...Macro Takumar F4/50... CZJ Biotar ALU M42 2/58 CZJ Tessar ALU M42 2.8/50
CZJ DDR Flektogon Zebra M42 2.8/35 CZJ Pancolar M42 2/50 CZJ Pancolar Exakta 2/50
Auto Mamiya/Sekor 1.8/55 ...Auto Mamiya/Sekor 2/50 Auto Mamiya/Sekor 2.8/50 Auto Mamiya/Sekor 200/3.5 Tamron SP500/8 Tamron SP350/5.6 Tamron SP90/2.5
Primoplan 1.9/58 Primagon 4.5/35 Telemegor 5.5/150 Angenieux 3.5/28 Angenieux 3,5/135 Y 2
Canon FL 58/1.2,Canon FL85/1.8,Canon FL 100/3.5,Canon SSC 2.8/100 ,Konica AR 100/2.8, Nikkor P 105/2.5
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Langstrum
Joined: 16 Feb 2014
Posts: 351
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| Posted: Wed Sep 10, 2014 2:25 pm Post subject: |
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Langstrum wrote:
Congratulation! And very useful photos, too
_________________
Camera: Sony A7 mark III, A6300
AF Lenses:
Canon EF 50/1.8; EF 200/2.8 L, EF 200/1.8 L, EF 300/4 L Sony E mount SEL 50/1.8 OSS, SEL 16/2.8 Fuji X mount XF 35/1.4 R
MF Lenses: Peleng MC 8/3.5, 17/2.8 Samyang 14/T3.1, 35/T1.5, TS 24/3.5 ED, 85/T1.5, Polar 85/1.4 Auto Revuenon 28/2.8; MC 50/1.4 Vega11U 50/2.8 Carl Zeiss Tessar 50/2.8 (exakta mount) Auto Chinon 50/1.9 Zenitar ME1 50/1.7 Sears Auto Sears 55/1.4; Sears 135/2.8 Auto Yashinon DX 50/1.4; Tomioka 50/1.2 SMC Pentax 50/1.7; 50/1.4 Canon FD 50/1.4 S.S.C; 55/1.2 S.S.C; FD 50/1.2 L; FD 85/1.2 L; 85/1.2 S.S.C Aspherical; FD 80-200/4 L 300/2.8 S.S.C Fluorite FD 300/2.8 L FD 200/1.8 LCosina-S 50/1.2 Helios Helios 44 Chrome f/22, 44-2, 44-3, 44M-4, 44M-7 (58/2), Helios-40 85/1.5 Jupiter Jupiter-9 85/2; Jupiter-37A 135/3.5; Jupiter-21M 200/4 Nikon Ai 105/2.5 Tairs-3S 300/4.5
Voigtlander 15/4.5 Aspherical; Ultron 35/1.7
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peter pan
Joined: 04 Nov 2014
Posts: 3
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| Posted: Sun Nov 09, 2014 1:44 pm Post subject: |
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peter pan wrote:
| Carlus wrote: |
Last night i managed to disassemble the lens and clean the blades. It took me 30 minutes of work.
I describe the whole process with some pictures.
1) this is the back of the lens (there are no screws!)
2) back plate removed after turned it counter clockwise (with some force!)
3) some pictures of the back opened (there is a big circular ring that can be removed after removing the small spring)
4) the back of the lens after the big ring has been removed raising it above (the are no screw to turn)
5) unscrew the four screws and you can remove another block
6) now you can also remove the outer aperture ring (but it is not necessary to remove it)
7) view from above (there is a screw that moves the blades through the movement of the outer ring)
8 ) turning counter clockwise a ring you can remove the rear lens block (if you need to clean the lens, this block can be opened turning two other rings wich are around the rear external lens)
9) now you have direct access to the blades in order to clean it
I have cleaned the blades (without disasseble them) with a cotton swab and alcohol.
But i've also noticed that the aperture movement was slow because the aperture spring was loose (the sprins is visible in the left side of the picture in number 7) ). So i have added a second spring in the same place (i have not other spring so i decided to use the spring of the big circular ring in picture number 3).......in fact i don't need the movement of this ring wich fully open the blades because i will use the lens on a nex/Alpha camera with adapter).
Everything is now fully working and perfect!! |
the valuable pictures can't be displayed on my screen. would you pls email me the pictures because i have a tessar 50 f2.8 which has a same back (without screws), i can't open it until now..... |
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tonibubu
Joined: 03 Dec 2016
Posts: 1
Location: Germany
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| Posted: Sat Dec 03, 2016 6:16 pm Post subject: |
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tonibubu wrote:
Thanks for all the useful info. I hate to necro a thread, but I figure I'm not the only one looking for info on how to service this lens.
When I tried to service my lens today I unfortunately couldn't even get past step one. The circular back plate is incredibly hard to unscrew and won't budge a millimeter. Does anyone have a tip how to get the darn thing off? |
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