black gunk

[Farrell]

Sorry Rick, but if it looks like this, it is not gunk - it is black goop! I took a bunch of pins like this out of a Korean piano a while ago - whole back action froze up. Don't know what it is, but I figure it either leached out of the bushings or was a product of some sort of reaction between the wood/bushing/pin. Are your bushings black also? If I remember correctly, we put a lot of new action parts into this piano.



Terry Farrell
  ----- Original Message ----- 
  From: richard.ucci at att.net 
  To: pianotech at ptg.org 
  Sent: Thursday, February 01, 2007 8:36 AM
  Subject: black gunk


  List,
  While repinning a sluggish balancier on a newish wurly c-143 ( with constant flang seizing problems),I noticed this black gunk on the pin when I removed it. Can someone clue me in? 
  By the way, this piano is pre Gibson ,so no warranty.
  Rick Ucci/Ucci Piano
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