Schimmel upright damper pedal squeak

[Mike Kurta]

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        Hi Robin:
    An old axiom that seems true goes:  " Fixing a problem is easy once =
you know what it is...finding it is the real problem."   One way to =
narrow it down is by moving the pedal when the squeak is present and =
listening to various parts of the trapwork and action with a long rubber =
or plastic hose.  One end is in your ear, the other is directed to the =
suspected trouble points.  A mechanic's stethoscope with a metal probe =
end is also helpful to locate squeaks.  By carefully touching various =
parts as you press the pedal may lead you to its source.   Diagnosing =
the noise when it is there is your best hope of nailing it down.  After =
it is gone, you can only wait and hope it doesn't return.  Another way =
is to carefully duplicate the movement of the pedal at various points in =
its train of motion.  Start with the long horizontal transverse wood or =
metal piece connected to the pedal itself.  If the sqeak is gone,  back =
up one step to find the reason i.e. the pedal itself or the threaded =
adjustment rod.  If it is still there, push up on the vertical rod and =
see if it remains.  If not, back up and you're there!  Maybe.  What =
you're trying to do in all of this is isolate and define the source of =
the noise.  The two major divisions are trapwork and action.  Once you =
know the area the sqeak is coming from, you're one step closer to the =
final answer. =20
    One thing is guaranteed after you reach a conclusion, you will never =
forget it!  Hope this helps....
    Mike Kurta
  ----- Original Message -----=20
  From: philromano@attglobal.net=20
  To: Pianotech=20
  Sent: Wednesday, December 18, 2002 10:09 AM
  Subject: Re: Schimmel upright damper pedal squeak


  Next time she hears the squeakt, ask her to remove her shoes. Does the =
squeak disappear?

  Phil Romano
  Myrtle Beach, SC
    ----- Original Message -----=20
    From: GirlPianoTuner@aol.com=20
    To: pianotech@ptg.org=20
    Sent: Wednesday, December 18, 2002 9:44 AM
    Subject: Schimmel upright damper pedal squeak


    I need some advice on eliminating a squeak from my customer's =
Schimmel upright, serial #332199.   This will be my second callback on =
the problem.   At first, the noise seemed to be coming from a bit of =
debris between one of the spoons and the lifter rod, but a few hours =
after I left, the problem recurred.   I went back and once again tried =
to isolate where the squeak was coming from.   At first, it sounded like =
it was near the pedal rod to action connection, but then it seemed to be =
at the pedal itself.   I took the pedal bracket apart and lubricated the =
pins and tightened everything down.   There seemed to be some space =
between the pedal rod and the plastic bracket allowing some movement, =
but not enough space to insert even a thin cardboard punching.   I =
thought I had really found the problem in the metal ring that connects =
the pedal and trap lever.   I lubricated every moving part I could find =
with either Protek or Prolube.   I played the pedal about 400 times, had =
the customer play a couple of songs, and the squeak was gone.   We were =
very relieved.   Yesterday, two weeks and one day since my last visit, =
the customer called complaining that the squeak is back.   I would =
appreciate any and all advice for my appointment with her tomorrow =
either via the list or to my email account, LadyPianoTuner.com.  Thank =
you one and all.
    Sincerely, Robin Flint, Hull, MA=20


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