Re: [Leica] Lubricating grease for helical focusing gears

[Vick Ko <vick.ko@sympatico.ca>]

Grease is the right thing to lubricate the helical with - get a light
grease that is made for helicals.  Be careful when you dis-assemble
the helical - they are often multi-threaded, so it is absolutely important
that you get the correct threads engaged when you put it back together.

Fargo Enterprises sells a whole series of greases.  Another important
factor in the grease is that for optical assemblies, it doesn't outgas
and coat everything (inner lens surface, the inside of your Leica).

Good luck.

Vick

Walter Bell wrote:

> I have just purchased a 50mm, 2.8 LSM lens in great shape, but I think it
> needs lubricating grease on the helical focusing gears. There appears to be
> no grease on these gears now, and the focusing ring moves very loosely. I
> think that grease would actually provide some smoothing resistance (I know
> that is a little "counter intuitive"). Anyway, does anyone have any
> suggestions as to a source for the proper type of grease to use?
> Regards,
> Walter Bell
> wbell@qualcomm.com