Graphited bushings

David M. Porritt dm.porritt@verizon.net
Wed, 13 Feb 2002 16:40:58 -0600


Mike:

I know I can rebush a guide rail much faster than I could hope to
clean the old bushings.  The bushing material is not very expensive,
so I would think you could save her some money by simply rebushing.

dave

*********** REPLY SEPARATOR  ***********

On 2/13/2002 at 2:02 PM Mike and Jane Spalding wrote:

>List,
>
>I had an appointment this morning to voice a Kawai grand for a new
>customer, a teacher.  She also asked me to fix a "ringer", damper
not
>seating reliably.  Actually, there was a whole bunch of dampers that
would
>seat on a hard staccato blow, but on a gentle release would not come
all
>the way down.  I pulled one out, and found a black deposit on the
wire
>(where it should have been polished from the bushing), and a pile of
>graphite powder on the guide rail around the bushing.  Yes, she
remebers
>now, a tuner had lubricated the sticky dampers for her several years
ago...
>
>So here's my question - I know I'll have to remove the dampers and
the
>guide rail to fix this problem.  Obviously, I'll polish the damper
wires. 
>Can I clean the graphite out of the bushings, say with naptha and a
pipe
>cleaner, or should I just go ahead and re-bush?  The bushings don't
seem
>to have any excess play in them, so I'd like to save her some money
by
>just cleaning and lubing, but not if this is going to come back and
bite
>me in the butt in a couple of years.  What do you think?
>
>thanks,
>
>Mike


_____________________________
David M. Porritt
dporritt@mail.smu.edu
Meadows School of the Arts
Southern Methodist University
Dallas, TX 75275
_____________________________




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