Removing Front Glas Summicron DR

[Faybel]

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Hey guys,

my name is Jan and I´m new here 🙂 I registered, because the other day I bought a pretty hazy Summicron 5cm DR . I disassembled the lens so far I could, screwed out the front element and removed the haze from all the rear glas elements. I put them back together, however, I could not remove the front glas that is being held in place by the retaining rings. Although I removed the retaining rings (the one with the lens name and serial on in and the one securing it) I could not take out this last glas element (which has most part of the haze on its inner side).

So my question to you experts is:

Is it actually possible to take out the front glas after the retaining rings are removed (as with the Elmar 5cm 2,8) or is the glas element being held in place by a another force?

Unfortunately I´ve been looking quite a while on the internet to find a solution, however, I could not find a question to this answer.

 

Hope you can help me 🙂

 

Cheers,

Jan

 

Btw: I know that disassembling lenses is only for specialists and that it is a complex matter. If I screw up, I´ll have to live with the consequences 😉 Looking forward to your answers

[albertknappmd]

be safe.. send i into Leica for repair..

Albert

[jaapv]

Or any trusted repair shop

[luigi bertolotti]

"Retaining rings out with spanners, glass out with the suction cup. The front element required the suction cup be pulled with pliers. It was in REALLY tight! "

Found on the Net ref. to disassemble the front group of Summicron Rigid (to say, the DR-equivalent built) : it's a group of two lenses with a thin "air lens" between… I join the opinion that is a job for very experienced labs…

[frame-it]

this guy has a step by step guide book or something in the video KS-15 ?

 

could be

 

http://www.pentax-manuals.com/manuals/service/leica_m2_service.pdf

 

 

Edited September 16, 2019 by frame-it

[luigi bertolotti]

Excellent video… but fully dedicated to the mechanically critcal part, unique for the Summicron DR (the double helicoid mechanism for dual range focusing) : pity, doesn't show anything about glass disassembly; the manual is super intriguing (KS15... the US Military version of M2) and extremely detailed but it too does not enter in dismounting the glass components : thanks for the Link, anyway !!

Edited September 16, 2019 by luigi bertolotti

[Eugene Allen]

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