I have used Sil-Glyde grease with great success. I can vouch for the fact that
parts are not normally needed. But you will spend some time cleaning that old,
dried farm implement lubricant they used ;-)
Greg, KC8HXO
--------------------------------------------
On Tue, 5/30/17, Howie WA3MCK <wa3mck@xxxxxxxxx> wrote:
Subject: Re: [TenTec] Century 21 audio hum
To: "Discussion of Ten-Tec Equipment" <tentec@xxxxxxxxxxxxxx>, "Josh Gibbs"
<Gibbsjj@xxxxxxxxx>
Date: Tuesday, May 30, 2017, 6:15 PM
Tri-Flow? What is that Josh?
I'm familiar with the flush/clean procedure. I
have been told that 90W cup grease or bicycle
chain lubricant is the way to
go.
What say you?
On Tuesday, May 30, 2017, Josh Gibbs <gibbsjj@xxxxxxxxx>
wrote:
> Sounds like its
time for a PTO clean and re-lube! I've been reading
about
> that procedure. Seems that
usually the PTO parts are fine and you just need
> to clean out the old grease and get some
fresh grease in there. Some people
> seem
to recommend flushing out the old grease and then putting
some
> Tri-Flow in there. Would certainly
be a lot less work!
>
> I hope Ten-Tec comes back to life and
starts selling parts again!
>
> Thanks for checking that hum for me. Mine
is definitely more than a slight
>
hum!
>
> -Josh
>
> On Tue, May 30, 2017
at 2:54 PM, Howie WA3MCK <wa3mck@xxxxxxxxx
> <javascript:;>> wrote:
>
> > Josh,
> >
> > Thank
you
> > for the info on the swamping
resistor placement and installation.
>
>
> > I have an analog C21. Bought
it in the late 90's, had it on the air for a
> > few years, sold it to Joe N2CX, he
had it for 15 or 20 years, and I
>
bought
> > it back s few years ago.
> >
> > It's
beat up cosmetically but works fine. Replaced the finals not
too
> long
> >
ago... and now the PTO is starting to go - mechanically that
is!
> >
> > Ok -
just checked - yes, when I turn down the volume there is a
slight
> hum
> >
with my old 8 ohm mono headphones.
>
>
> > I prefer to use the internal
speaker which is fine for me and why I may
> > have not noticed the low/level
hum.
> >
> > By
the way, I emailed TenTec several months ago concerning
the
> > availability of a PTO repair
kit for the C21 analog xcvr. I received an
> > answer a few weeks ago stating that
they were in transition and to keep
>
an
> > eye on their website. Nothing
seen yet.
> >
>
> Howie WA3MCK
> >
>
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>
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>
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