Zeiss Triotar - how do you open this ?

luisalegria · Joined: 07 Mar 2008 Posts: 994 Location: San Francisco, USA

I have a Zeiss Triotar 135/4 in Exakta mount.

The helical is completely stuck at infinity. There are no screws that I can see, maybe they are covered by the focus ring.

I tried injecting lighter fluid and WD-40 (light oil) into the mechanism from the back and in the edges of the focus ring, no luck so far.

The only thing I can do is unscrew the front lenses, but that doesn't get me to the helical.

So, my next step is to put it in a bath of lighter fluid.

Any ideas before I go this far ?
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Pentax K100D, SV, SP1000, SP500, LX, SF10, Mamiya 1000TL, Sears/Ricoh TLS, Exakta VX, VXIIb, Olympus OM-10, Nikon FM, Zeiss Contaflex B, Retina Reflex S, IV, Rolleiflex, Speed Graphic & Meridian 4x5, misc. rangefinders and folders, several dozen lenses and etc., et. al., ad infinitum.

Attila · Joined: 24 Feb 2007 Posts: 16433 Location: Budapest,Hungary

Unfortunately I also don't have any idea.
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Olympus E-1,Bessa L,Bessa RF Skopar 10,5cm,Besa I Color Skopar 105mm,Olympus OM2n,Nikon FA,Yashica Eletro 35 GN,
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Leica: 4/100 Macro Elmar,2.8/90 Elmarit last version
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luisalegria · Joined: 07 Mar 2008 Posts: 994 Location: San Francisco, USA

Oh well, its gone in the bath.

I'm crossing my fingers.
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Pentax K100D, SV, SP1000, SP500, LX, SF10, Mamiya 1000TL, Sears/Ricoh TLS, Exakta VX, VXIIb, Olympus OM-10, Nikon FM, Zeiss Contaflex B, Retina Reflex S, IV, Rolleiflex, Speed Graphic & Meridian 4x5, misc. rangefinders and folders, several dozen lenses and etc., et. al., ad infinitum.