Re: arsclist 78 cleaning machines.

[Graham Newton <gn@xxxxxxxxxxxxxxxxxxxxx>]

Don Cox wrote:

> It sounds as though some Loktite on those screws would be an
> improvement to the design.

It certainly would prevent the screw coming loose again, provided that the
set screw was accurately located to the flat on the shaft in the first place.
The problem in the Monks machine is that the screws are located in a 
sheltered spot and should it become necessary to disassemble things at some
later date, the LOKTITE would make it very difficult, particularly if the 
wrong kind of LOKTITE was used!

I already provided this information privately to another list member but it 
is probably worth repeating here:- 

There is a tapered "flat" on the turntable shaft, and if you locate the 
turntable mounting too low on the flat (it should be about 1/2 way down
the surface of the "flat") or you don't get the set screw straight on the
"flat", the screw will work loose and you will have this problem repeatedly.
The supplied small Allen wrench is awkward for this purpose, but a long 
screwdriver style wrench (available at most hardware stores) will simplify
the task greatly. 

The second screw provides a means of inhibiting any rotating motion, BUT, 
the trick to getting it right is to slightly rock the turntable mount, back
and forth, while you are lightly "finger" tightening the screw that faces the
"flat" on the shaft.  You will clearly feel the location of the "flat" and as
you tighten the screw, a point will be found where you can't rock the mount
any further.  At this point, tighten the "flat" screw securely, and then 
tighten the other screw securely.  This whole procedure should not take more
than 15 minutes to do successfully.

This procedure was followed with my own "Archivist" machine and the turntable
has not come loose with over 1,500 records cleaned since.  Any other machine 
should be no different.


... Graham Newton

-- 
Audio Restoration by Graham Newton, http://www.audio-restoration.com
World class professional services applied to phonograph and tape
recordings for consumers and re-releases, featuring CEDAR processes.