Yamaha upright jack(or some such) noises

David Ilvedson ilvey@sbcglobal.net
Sat, 6 Dec 2003 08:58:33 -0800


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Rather than graphite, use micro-fine teflon powder from Bill=
 Spurlock.

David I.

----- Original message ---------------------------------------->
From: chweelee <chweelee@singnet.com.sg>
To: 'Pianotech' <pianotech@ptg.org>
Received: Sat, 6 Dec 2003 15:23:22 +0800
Subject: RE: Yamaha upright jack(or some such) noises

Hi Dave,
 
Try applying graphite on the butt skin and also on the capston=
 screw surface that is rubbing against the whippen heel cloth if=
 the parts are not worn off yet.
 
Ruth Lee
 
-----Original Message-----
From: pianotech-bounces@ptg.org=
 [mailto:pianotech-bounces@ptg.org] On Behalf Of=
 Piannaman@aol.com
Sent: Saturday, December 06, 2003 11:34 AM
To: pianotech@ptg.org
Subject: Yamaha upright jack(or some such) noises
 
Hello Listers, 

I tuned a Yamaha U-3 today, approximately 20 years old. =
 Everything on it was fine, except for the squeak/rattle that=
 seemed to emanate from the jacks.  I've experienced this on=
 other Yamaha uprights, but have not been able to come up with a=
 definitive reason for the noise.  It seems to me as though it's=
 the jack/jack spring interface.  The customers haven't=
 complained about it, but it drives me nuts.  It's evident mostly=
 on hard blows.   

I'm sure many of you have heard this noise before, and probably=
 most of you have figured out what it is and have been able to=
 fix it.  If you have, please enlighten me!  I will be forever in=
 your debt! 

Thanks in advance, 

Dave Stahl


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