Archived posting to the Leica Users Group, 1997/07/12

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Subject: Lens lube and maintenance
From: "Roy Zartarian" <royzart@connix.com>
Date: Sat, 12 Jul 1997 23:44:11 +0000

Fellow LUG's

Some time ago we had a fascinating thread about the type of grease to 
use on lens focusing mechanisms. Could someone post a recap?

A '69 vintage 50mm Summicron just came my way.  The focusing ring did
not move as easily as I would have liked.  I did get the mounting
flange off the base and, with small amounts of lighter fluid, smooth 
things out a bit.  However, I am concerned that the solvent may have 
removed too much lubricant.

Also, is further disassembly of this lens required for lubricating 
the focusing threads or is it sufficient to apply the grease to the 
portion that is exposed when the flange is removed?

One last question - is there a quick fix to securing the ring bearing 
the white dot indicating the aperture setting?
Written by:
   Roy C. Zartarian
   http://www.connix.com/~royzart
   "A prophet is not without honor except in his
    own land and among his own people"