IIRC, ring should just lift off. Sounds like it is "glued" on by old
grease. Try dribbling in a tiny bit of denatured alcohol or, as Chuck
suggested, a little Ronsonol lighter fluid. Work ring off slowly.
___________________________________
John Hermanson | CPS, Inc.
21 South Ln., Huntington NY 11743
631-424-2121 | www.zuiko.com
Olympus OM Service since 1977
Gallery: www.zuiko.com/album/index.html
Alan Wood wrote:
> In 2001, Mark Dapoz kindly provided some advice:
>
> Chances are that the grease around the aperture ring has solidified
> and is preventing it from turning. Use a rubber stopper to twist the
> front part of the lens off, it's just a big retaining ring. The
> aperture ring should then easily come off. You will then see a
> little pin sticking out from the barrel. Try moving that pin, it
> should move freely and close the aperture. If it doesn't then you
> have other problems and it's best to get the lens CLA'd. If it does
> move freely, just clean up the grease on the aperture ring and
> re-lube it using an appropriate grease.
>
> ----------
>
> It has taken me 7 years, but I have finally managed to unscrew the
> front ring (the one that says ZUIKO MACRO etc.). Now I cannot get
> any further. The aperture ring (the first knurled ring) will not
> come off. I have tried gently warming it.
>
> Please does anyone have any suggestions for loosening it? Maybe a
> solvent?
>
> Thank you
>
> Alan Wood http://www.alanwood.net (Unicode, special characters,
> pesticide names)
--
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