[Milsurplus] Dynamotor Lubrication

[J. Forster]

What I do is either remove the bearings or hold the shaft vertical in a
small dish of solvent in an ultrasonic. When the grease is largely out, I
repeat with clean solvent, let it dry, and relube.

You can probably do the same thing without taking the dyno apart, if you
use a grease solvent that does not attack paint, like rubber cement
thinner.

Best,

-John

=============



> Hello everyone,
>
> Finally getting around to collecting all my DM-32's,DY-8's etc. to check
> the
> brushes and lube the bearings.
>
>
> Opening the bearing cap at the end of the shafts reveals a kind of shield
> over the actual balls themselves. I can pick out the old grease with a
> toothpick, but can't get between the balls.
>
> Question: is this the limit of the access to the bearing? Seems like there
> could be a lot of crud on the inner side of the bearing that I could be
> missing.
>
> I am flushing the bearing carefully with mineral spirits while keeping the
> dynamotor shaft horizonatal so as not to let the dilute crud fall into the
> commutator.
>
> Is this the best that can be done? Or is there a secret to getting deeper?
>
> Using Mobil SHC-100.
>
> Thanks,
>
> Ken
> W2EWL
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