<HTML><HEAD> <META http-equiv=Content-Type content="text/html; charset=ISO-8859-1"> <META content="MSHTML 6.00.2900.2722" name=GENERATOR></HEAD> <BODY id=role_body style="FONT-SIZE: 10pt; COLOR: #000000; BORDER-TOP-STYLE: none; FONT-FAMILY: Arial; BORDER-RIGHT-STYLE: none; BORDER-LEFT-STYLE: none; BORDER-BOTTOM-STYLE: none" bottomMargin=7 leftMargin=7 topMargin=7 rightMargin=7>Israel,<BR><BR>Here is what I found...<BR> <DIV style="PADDING-RIGHT: 5px; PADDING-LEFT: 5px; PADDING-BOTTOM: 5px; BORDER-LEFT: #000000 3px solid; PADDING-TOP: 5px"> <HR> This is a forwarded message<BR>From: Piannaman@aol.com<BR>To: pianotech@ptg.org<BR>Received: 9/21/2005 3:29:38 AM<BR>Subject: Re: Yamaha spring cord replacement<BR><BR><FONT id=role_document face=Arial color=#000000 size=2> <DIV align=left>In a message dated 9/21/2005 6:43:43 AM Pacific Standard Time, piano57@insightbb.com writes:</DIV> <BLOCKQUOTE style="PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: blue 2px solid"><FONT style="BACKGROUND-COLOR: transparent" face=Arial color=#000000 size=2> <DIV><FONT face=Arial size=2>Hello folks who are more organized than I am,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Oh groan. I saved the instructions (on a disk) for replacing those pesky little spring cords and now I can't find it.  Would someone please send them along to me  (You know, the instructions that include removing the hammer rail.).  Though I read them--a long time ago--I can't remember all the details (Guess I've been eating too many aluminum bushing cauls), like how long the job is supposed to take.</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Thanks,</FONT></DIV> <DIV><FONT face=Arial size=2></FONT> </DIV> <DIV><FONT face=Arial size=2>Barbara Richmond, RPT</FONT></DIV></FONT></BLOCKQUOTE> <DIV> <DIV> </DIV> <DIV>Barbara,</DIV> <DIV> </DIV> <DIV>Here are instructions.  I got them from Tom Cole, RPT.  He can do it in around 2 hours, give or take. I'm sure his shop area is far more efficiently organized than what I was using at the time.  The first time took me around 4, second time was about 3 hours.  I see another one on the horizon soon!</DIV> <DIV> </DIV> <DIV>Dave Stahl</DIV> <DIV> </DIV> <DIV> </DIV></DIV> <DIV></DIV> <DIV><FONT color=#800000>Problem:<BR>Hammer return spring cords are breaking due to unknown cause<BR>Symptoms:<BR>Cords have become a brownish color<BR>Random breakage is occuring<BR>Touchweight is affected on some notes; hammer sometimes falls into strings on slow release<BR>Solutions:<BR>Replace hammer flanges<BR>Replace cords<BR>Condition of action:<BR>If condition of the hammers, pinning, and travelling/mating to strings all good, replace cords.<BR>If pinning is poor then flange replacement may be a better option.<BR>Cord Replacement Procedure:<BR>1. Place action in action cradle<BR>2. Remove hammer rest rail and treble bracket<BR>3. Loosen hammer butt plate screws<BR>4. Remove hammer assemblies from flanges and let hang from bridle wires<BR>5. Straighten any bent return springs<BR>6. Tighten all hammer/damper/wippen flange screws<BR>7. Tilt action 90° so that the hammer flange cord slots face up<BR>8. Using specially adapted shimming chisel, clean slots and vacuum up debris<BR>9. Wrap 90+ turns on dowel with new cord and cut turns with razor<BR>10. Glue one end of each piece to one slot on each flange<BR>11. Return to the first flange and trim each cord to length<BR>12. Glue other end to remaining slot; check with gauge<BR>13. Replace hammers; tighten butt plate screws; hook springs under flange cords as you go<BR>14. Replace hammer rest rail bracket and reinstall rest rail<BR>15. Final check; jack springs engaged with jacks, spring cords in hook of hammer return springs, bridal tapes not twisted<BR>Tools and Materials:<BR>Ž flange screwdriver<BR>Ž thin screwdriver<BR>Ž Phillips screwdriver<BR>Ž shimming chisel modified to clean flange slots<BR>Ž glue applicator (syringe) filled with Tightbond<BR>Ž end nippers with gauge<BR>Ž action cradle<BR>Ž replacement cord (braided Dacron of suitable diameter)<BR>Ž 5/8" dowel [9/16"]<BR>Ž blunted scriber<BR>Ž gauge (dowel)<BR>Ž razor<BR>Ž forceps<BR>Ž damp rag<BR></FONT></DIV></FONT></DIV></BODY></HTML>