[R-390] Autotune

[Paul Anderson]

There are slip clutches on the inside of the autotune units that need
to turn free with the right amount of torque.  If the 50 year old
grease is not cleaned out, they will not turn free, and the motor will
tear up the line shaft pretty bad.

If you haven't already, take the KC and MC tuner units off the
chassis, soak them in appropriate solvent for awhile (I used kerosene
for more than a week each).  At least then, the clutch should turn
freely.

If you choose not to clean the old grease out of the tuning units,
then I strongly suggest not applying power.

You also want to make absolutely certain that the tuner turns without
any crunching whatsoever, as well, turning the lock pins slowly should
produce no grinding, hangup, or other signs of dirt in the mechanism.

As long as the end stop clutches can turn, then I don't think applying
power to the motor will hurt or break anything unless you plan to use
the tuning very much and don't lube it according to the manual.

It's a neat mechanism when it works!

Paul

On Mon, Dec 21, 2009 at 6:00 PM, Mark McNulty <noggie1999 at yahoo.ca> wrote:
> Hi Everyone,
> I have a power supply, 28vdc 5.3A.  What I see from the schematic is hook up DC to pins D and E of the remote control connector ( J105), and tighten the locking keys down on kilo and mega cycle knobs. Does the sound right? and is there any advice other than dont do it? Thanks
>
> Mark
>
>
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