The diaphragm mechanism is assembled bone dry and should not be lubricated
at any time, no way no how.
The oil you see comes from the helicoid grease. Separation is a product of
age, usually accelerated by heat.
John Hermanson
___________________________________
Camtech, Olympus Service since 1977.
21 South Lane, Huntington NY 11743-4714
631-424-2121 http://www.zuiko.com
Free Olympus Manuals: 1-800-221-3000
___________________________________
----- Original Message -----
From: Lex Jenkins <lexjenkins@xxxxxxxxxxx>
To: <olympus@xxxxxxxxxxxxxxx>
Sent: Wednesday, September 27, 2000 8:32 PM
Subject: Re: [OM] Re Oil on Aperture Blades
| I don't know where oil on the diaphragm is liquified grease that's
migrated
| from the focusing helix to the blades, or is a separate oil applied to the
| diaphragm acutating mechanism that went astray. When I've looked at some
| lenses closely it appears to be a separate oil that migrated.
|
| When I've rebuilt lenses I use dry molybdenum disulphide powder on the
| diaphragm blades and actuating mechanism - no oil. Work it into the
moving
| parts then blow the excess out. Moly is also available in other
carriers -
| grease or a solvent-based carrier that evaporates after carrying the moly
| into crooks and nannies.
|
| I have no idea whether this is acceptable industry practice or even good
| practice. It's worked for me. I just applied the same logic and
techniques
| I learned from maintaining my own spring piston airguns, where moly has
| proven effective in preventing wear in metal-to-metal contact surfaces.
| (I'm really not trying to invoke digression, just citing where my method
| originated).
| -----------
| Lex Jenkins
| -------------------------------------------------------------
| Why are they called fanny packs when we use 'em as codpieces?
| =============================================================
| >From: DAVDOU9211@xxxxxxx
| >Date: Wed, 27 Sep 2000 17:36:34 EDT
| >
| >...having never seen a lens
| >with oily aperture blades, where does the oil come from?
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