I’m assuming this is a PianoDisc. The solenoid sticks for three reasons that I’ve found. Debris gets in the chamber and binds betwixt the plunger and the walls of the chamber. Lifting, spinning and then dropping the plunger in one smooth motion numerous times sometimes dislodges the offending particle. Then there’s the binding stem. Spin the plunger and see if the tip wanders. If so, straighten it. Be gentle with this. After straightening, if it still binds, locate the offending point of contact and relocate the neighboring solenoid. After ruling out the first two reasons, you’re left with a warped chamber or barrel. The solenoid was either wound too tight or it got hot and warped the barrel to the point that the plunger is now rubbing on the inside walls of the barrel or chamber. Replacement is the only fix. Any PianoDisc installer should have one laying around for you to purchase. If they are the type that wrap around the rail using a quarter inch screw, you don’t need to remove all the solenoids to get the old one off. Just remove the screw all the way and it should come off easily ..... solo. There was a short production run that used torx heads on the current styled solenoids. Current styled solenoids are easily replaced one at a time. You’ll need a quarter inch nut driver. Allow at least an hour labor ............ pedal mech removal, rail cover removal, rail removal, solenoid R and R. Lar What's the best way to lube a stuck solenoid? Rick Ucci Uccipiano.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <https://www.moypiano.com/ptg/pianotech.php/attachments/20120725/274aa05f/attachment.htm>
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