any new fix for an old problem

[Daniel Gurnee]

Paul,

Wurlitzer in the '60's used mineral oil to "moisture protect" their pianos
going to high humidity areas. They cautioned that if easing was required, it
should be done before the oil was applied because the oil would be a berrier
to alchohol and water preventing the shrinking action of the alchohol/water.

If oil is present in the center and shrinking is necessary, the oil must be
removed by some means. Naphtha or any solvent for oil can be applied but the
mixture will not evaporate on its own; it just be wiped off as it bubbles to
the surface. Oil applied to an action before it functions properly may cause
the necessity of replacing the affected centers.

Dan Gurnee, RPT, retired HSU, CA

on 2/23/01 5:18 PM, Paul Kupelian at kupelian@Oswego.EDU wrote:

> Hi All,
> Since my retirement from my institutional work, I have been "out in the
> field" at some local colleges and schools.  A Baldwin 243HP action was
> treated several years ago with Naptha and mineral oil, and now gets very
> sluggish at times.  After I treat it with Protek, everything is fine for a
> while.  Is there any way short of replacing parts, pins and/or flanges, to
> drive out the mineral oil?
> 
> I'm hoping in time the Protek will, but I'm looking for more sage advice
> from some of the old sages that have encountered the problem before.
> 
> Paul Kupelian, RPT
> kupelian@oswego.edu
> 
>