Archived posting to the Leica Users Group, 1998/07/04

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Subject: Re: [Leica] Lighter Fuel for lens cleaning
From: Charles Dunlap <cdunlap@es.UCSC.EDU>
Date: Sat, 4 Jul 1998 12:36:32 -0800

> It feels very much that there
>is some grit in the focusing mechanism.  This has happened very rarely.
>The image quality and focusing accuracy is not affected in any way.

I think you'd be much better off sending it in under warranty. The lighter
fluid is acting as a solvent on the Summitar aperture blades described in
the other post--it's loosening old lubricant. A solvent won't dissolve a
piece of grit, and taking apart your lens to get at it is something you
probably don't want to do without prior experience (I know I wouldn't). I
might give it a go on an older lens, but not one that's still freely
repaired by Leica.

One caveat, they seem to take 4-6 weeks to fix things in NJ. If you send it
in I would call them a week after it arrives (use a UPS or FedEx tracking
number) and ask them what their schedule is like. You'll have to be
patient, and it's not easy when you're without a piece of equipment that
you want to use.

- -Charlie