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 -------------- next part -------------- An HTML attachment was scrubbed... URL: https://www.moypiano.com/ptg/pianotech.php/attachments/20070201/570bae46/attachment-0001.html -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: image/jpeg Size: 47676 bytes Desc: not available Url : https://www.moypiano.com/ptg/pianotech.php/attachments/20070201/570bae46/attachment-0001.jpe
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