damper mechanism squeaks....argh!

[Wayne Walker]

Make sure the pedal board screws are tighten. You will have to use a tilter
to lay the piano on its back. I would check the bottom front panel for trace
of excess polyester on the bare edges. We had carry pianos from this factory
and they are prone to pedal squeaks. Most times it was the lower front
panel.
 
Wayne Walker
Piano Tuner / Technician
Musicstop Acoustic Piano Service
264 Herring Cove Road
Halifax, NS, Canada
B3P 1M1
902-221-1540
902-496-6924 Fax
HYPERLINK "http://www.musicstop.com/"www.musicstop.com

-----Original Message-----
From: piannaman at aol.com [mailto:piannaman at aol.com] 
Sent: Thursday, December 21, 2006 11:16 AM
To: pianotech at ptg.org
Subject: damper mechanism squeaks....argh!


 Hi All,
 
I thought I could solve any damper pedal mechanism squeak, and up until
recently, I've had pretty good luck.  Then I met a recent model Hallet-Davis
(Dongbei built, I believe) upright.  
 
I lubricated and tightened everything I could think of.  Here's the list of
things I tightened and lubed:
 

Lubed
damper flange centers (protek CLP)
damper springs (teflon powder)
damper lever felt with teflon(two weeks prior) and protek last night
lift rod with protek
all rod tips and linkage w/ special blend
 
tightened 
all screws on the various rails
pedal rod hinge screws
all pedal brackets and fixture screws
all damper flange screws
all available case screws
In addition, I inserted buckskin pieces in places where case parts were
rubbing and replaced the rubber pieces where the pedal rod inserts into the
lift rod with buckskin pieces
 
Noise still there…..argh! It sounds to me like it's the damper lever
felt/lift rod interface. It doesn't happen when the pedal is first being
used, say for 20-30 presses of the pedal. Then gradually, the creak comes
back.
 
I don't know what else to do. Did I miss anything?  Any ideas?
 
Dave Stahl

Dave Stahl Piano Service
650-224-3560
dstahlpiano at sbcglobal.net
http://dstahlpiano.net/




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