How to disassemble Super Takumar 200mm f4.0

Gilles T · 04-29-2020, 08:29 AM

Hello all,

I am french and it is my first post here, english is not my language so sorry every body if this post is not clear.

I have a Super Takumar 200mm f4.0 and I must clean the front optic part but I cannot disassemble it.

Dust is between the second and the third lens, how can I open this part?

Thank you for you help, and sorry for my english.

Best regards

Gilles T

**blumoon722** · 04-29-2020, 08:39 AM

I found this video on Youtube: Takumar 200mm 4 - Disassembly, Assembly, Refurb

You Tube

Your English is fine

Not a Number · 04-29-2020, 09:00 AM

There is also a thread that tracks DIY repair blogs and videos you can refer to:

Pentax Lens Disassembly Database - PentaxForums.com

If you find new, dead or updated links please feel free to share.

Gilles T · 04-29-2020, 09:10 AM

Originally posted by blumoon722

I found this video on Youtube: Takumar 200mm 4 - Disassembly, Assembly, Refurb
https://www.youtube.com/watch?v=uA5GW-ba3Jc

Your English is fine

Hello,
Thank you for your quick answer,
I know this video but my problem is the first optic bloc which is not disassebly here

Gilles T · 04-29-2020, 09:17 AM

Originally posted by Not a Number

There is also a thread that tracks DIY repair blogs and videos you can refer to:

Pentax Lens Disassembly Database - PentaxForums.com

If you find new, dead or updated links please feel free to share.

Hello,
Thank you for the database, alas my optic is not present.
My difficulty is still the same, if I find something I notice here.

**.a.t.** · 04-29-2020, 10:50 AM

Originally posted by Gilles T

. . .
Thank you for you help, and sorry for my english.

Best regards

Gilles T

Your English is excellent and we understand you perfectly, Gilles.

Maybe this thread will help you?
200mm F4 Takumar Dissambly Guide - PentaxForums.com

Tim

Gilles T · 04-29-2020, 10:58 AM

Hello Tim,

Thank you for your answer, unfortunatly my difficulty is the front part with 4 lens, and it's not present in this vidéo.

Gilles T

Not a Number · 04-29-2020, 11:00 AM

How bad is the dust? Dust usually isn't much of a problem optically unless it is severe or very large motes like dandruff flakes.

Gilles T · 04-29-2020, 11:29 AM

Originally posted by Not a Number

How bad is the dust? Dust usually isn't much of a problem optically unless it is severe or very large motes like dandruff flakes.

If I cannot clean it I am going to keep it as is but there is also fog

**.a.t.** · 04-29-2020, 12:12 PM

Originally posted by Gilles T

Hello Tim,

Thank you for your answer, unfortunatly my difficulty is the front part with 4 lens, and it's not present in this vidéo.

Gilles T

Okay. Did you scroll down to post #4 in that thread? Is that helpful?

Anyway, I'll recap here what I know about my own Super Takumar 200.

With my lens, using a dish washing rubber glove for grip, the top end simply unscrewed from the barrel. If your top end is stuck, try heating it with a hair dryer. The top piece on my lens has two elements.

I'd think the name ring should unscrew if you have a friction tool of the correct size. I usually use a scrap of rubber glove and the open end of a bottle or jar. And the second element appears to be held in place by a slotted retaining ring. You'll need a lens spanner to loosen that.

The next group is now exposed and should also unscrew from the barrel. It has two elements which appear to be held in place by retaining rings. I presume the retainers are threaded and should unscrew if needed. Again, try heat if the parts are stuck. And if you need a solvent for glue or cement, try a few drops of isopropyl alcohol.

Here's my lens apart. The second photo shows the retaining ring of the second element with the spanner slots circled.

Edit: Oh, I see from your photo you may already have discovered what I've just told you?
I've never completely disassembled the front groups, but if you have any more questions, I'll try to help.

Gilles T · 04-29-2020, 01:09 PM

Yes, I see well, unscrew from the barrel is ok, my difficulty is to separate the second element from the front as you show with your first photo. Unscrew is very hard (very old and perhaps never unscrewed)
After I think it will be okay, I have a spanner, it will be easier.
Thank you for your help, I come back with good news, I hope

Gilles T · 04-30-2020, 01:04 PM - **2 Likes**

Hello every body,

Result is perfect, thank you for your help, the lens is disassemblyed.
Now ... cleaning

Thank you very much and take care of you.

Not a Number · 04-30-2020, 04:01 PM

That's good news.

BTW: I updated the Lens Disassembly Database post and added the link for the Super-Takumar 200mm F4.

**.a.t.** · 04-30-2020, 05:10 PM

Originally posted by Gilles T

Hello every body,

Result is perfect, thank you for your help, the lens is disassemblyed.
Now ... cleaning

Thank you very much and take care of you.

Great! Thanks for letting us know.

Gilles T · 05-01-2020, 04:36 AM

I found the construction plan, it's also a good idea to understant what we have to do.

Pentax Super-Takumar 200mm f/4.0 SM

04-29-2020, 08:29 AM	#1
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8	How to disassemble Super Takumar 200mm f4.0 Hello all, I am french and it is my first post here, english is not my language so sorry every body if this post is not clear. I have a Super Takumar 200mm f4.0 and I must clean the front optic part but I cannot disassemble it. Dust is between the second and the third lens, how can I open this part? Thank you for you help, and sorry for my english. Best regards Gilles T

04-29-2020, 11:29 AM	#9
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	Originally posted by Not a Number How bad is the dust? Dust usually isn't much of a problem optically unless it is severe or very large motes like dandruff flakes. If I cannot clean it I am going to keep it as is but there is also fog Attached Images

04-30-2020, 01:04 PM - 2 Likes	#12
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	Hello every body, Result is perfect, thank you for your help, the lens is disassemblyed. Now ... cleaning Thank you very much and take care of you. Attached Images

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04-29-2020, 09:00 AM	#3
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	There is also a thread that tracks DIY repair blogs and videos you can refer to: Pentax Lens Disassembly Database - PentaxForums.com If you find new, dead or updated links please feel free to share.

04-29-2020, 09:10 AM	#4
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	Originally posted by blumoon722 I found this video on Youtube: Takumar 200mm 4 - Disassembly, Assembly, Refurb https://www.youtube.com/watch?v=uA5GW-ba3Jc Your English is fine Hello, Thank you for your quick answer, I know this video but my problem is the first optic bloc which is not disassebly here

04-29-2020, 09:17 AM	#5
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	Originally posted by Not a Number There is also a thread that tracks DIY repair blogs and videos you can refer to: Pentax Lens Disassembly Database - PentaxForums.com If you find new, dead or updated links please feel free to share. Hello, Thank you for the database, alas my optic is not present. My difficulty is still the same, if I find something I notice here.

04-29-2020, 10:50 AM	#6
.a.t. Site Supporter Join Date: Mar 2011 Location: yesterday Photos: Gallery Posts: 1,261	Originally posted by Gilles T . . . Thank you for you help, and sorry for my english. Best regards Gilles T Your English is excellent and we understand you perfectly, Gilles. Maybe this thread will help you? 200mm F4 Takumar Dissambly Guide - PentaxForums.com Tim

04-29-2020, 10:58 AM	#7
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	Hello Tim, Thank you for your answer, unfortunatly my difficulty is the front part with 4 lens, and it's not present in this vidéo. Gilles T

04-29-2020, 11:00 AM	#8
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	How bad is the dust? Dust usually isn't much of a problem optically unless it is severe or very large motes like dandruff flakes.

04-29-2020, 12:12 PM	#10
.a.t. Site Supporter Join Date: Mar 2011 Location: yesterday Photos: Gallery Posts: 1,261	Originally posted by Gilles T Hello Tim, Thank you for your answer, unfortunatly my difficulty is the front part with 4 lens, and it's not present in this vidéo. Gilles T Okay. Did you scroll down to post #4 in that thread? Is that helpful? Anyway, I'll recap here what I know about my own Super Takumar 200. With my lens, using a dish washing rubber glove for grip, the top end simply unscrewed from the barrel. If your top end is stuck, try heating it with a hair dryer. The top piece on my lens has two elements. I'd think the name ring should unscrew if you have a friction tool of the correct size. I usually use a scrap of rubber glove and the open end of a bottle or jar. And the second element appears to be held in place by a slotted retaining ring. You'll need a lens spanner to loosen that. The next group is now exposed and should also unscrew from the barrel. It has two elements which appear to be held in place by retaining rings. I presume the retainers are threaded and should unscrew if needed. Again, try heat if the parts are stuck. And if you need a solvent for glue or cement, try a few drops of isopropyl alcohol. Here's my lens apart. The second photo shows the retaining ring of the second element with the spanner slots circled. Edit: Oh, I see from your photo you may already have discovered what I've just told you? I've never completely disassembled the front groups, but if you have any more questions, I'll try to help.

04-29-2020, 01:09 PM	#11
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	Yes, I see well, unscrew from the barrel is ok, my difficulty is to separate the second element from the front as you show with your first photo. Unscrew is very hard (very old and perhaps never unscrewed) After I think it will be okay, I have a spanner, it will be easier. Thank you for your help, I come back with good news, I hope

04-30-2020, 04:01 PM	#13
Not a Number Moderator Join Date: Mar 2012 Location: Venice, CA Posts: 10,526	That's good news. BTW: I updated the Lens Disassembly Database post and added the link for the Super-Takumar 200mm F4.

04-30-2020, 05:10 PM	#14
.a.t. Site Supporter Join Date: Mar 2011 Location: yesterday Photos: Gallery Posts: 1,261	Originally posted by Gilles T Hello every body, Result is perfect, thank you for your help, the lens is disassemblyed. Now ... cleaning Thank you very much and take care of you. Great! Thanks for letting us know.

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05-01-2020, 04:36 AM	#15
Gilles T New Member Join Date: Sep 2018 Location: Paris Posts: 8 Original Poster	I found the construction plan, it's also a good idea to understant what we have to do. Pentax Super-Takumar 200mm f/4.0 SM