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05-17-2014, 11:12 PM   #1
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Pentax-M 200mm F4 Repair

Hi Can any one tell me how to open Pentax-M 200mm F4..I am able to open the rear potion Of the lens But can not open the front side of this lens..

Pentax Lens Disassembly Database(Link Pentax M 200/4 repair - wiratama.net) had given how to open the rear side .It is not clear how to open front portion..Can any body Help??I am Unable to open rear portion mentioned in photo.


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Last edited by tezomoy; 05-18-2014 at 12:11 AM.
05-17-2014, 11:49 PM   #2
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I think I can just make out on your picture what you need to look for on the front. There should be two cuts in the front ring around the lens. Unscrew that ring using two small flat screwdrivers. That should expose the front lens or lens assembly.
05-18-2014, 12:08 AM   #3
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QuoteOriginally posted by Giklab Quote
I think I can just make out on your picture what you need to look for on the front. There should be two cuts in the front ring around the lens. Unscrew that ring using two small flat screwdrivers. That should expose the front lens or lens assembly.
I have done that too..i can only remove one lens element after that i cant find any cuts and still 3 element are inside the front portion.And the spot you see in 2nd picture it is not a cut set that can be moved..thats a broken spot
..

Last edited by tezomoy; 05-18-2014 at 12:26 AM.
05-18-2014, 02:28 AM   #4
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You currently seem to be at step 15.

I think you should be able to separate the threads from the front part, like in step 16. Then you should be able to pull out the 3 elements from the back side of the front part.
But if nothing budges, I wouldn't force it.

05-18-2014, 02:47 AM   #5
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QuoteOriginally posted by Giklab Quote
You currently seem to be at step 15.

I think you should be able to separate the threads from the front part, like in step 16. Then you should be able to pull out the 3 elements from the back side of the front part.
But if nothing budges, I wouldn't force it.
Yes i am currently at step 15..But I don't understand how the have gone from step 15 to 16??Did they do it by twisting it and if they did then which direction di the twist it?
05-18-2014, 05:13 AM   #6
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QuoteOriginally posted by tezomoy Quote
Yes i am currently at step 15..But I don't understand how the have gone from step 15 to 16??Did they do it by twisting it and if they did then which direction di the twist it?
You should try twisting gently. No idea which direction this lens needs, but it's usually to the left, looking from the mount.
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