List, Sorry.......Forgot to sign the reply to Roger re: Yamaha C7 Bob Moffatt (Yamaha Factory Trained Tech) Calgary, Alberta Canada ----- Original Message ----- From: Robert Moffatt <moffattr@cadvision.com> To: <pianotech@ptg.org> Sent: Sunday, December 05, 1999 12:51 AM Subject: Re: Yamaha C7 > > ----- Original Message ----- > From: Roger Jolly <baldyam@sk.sympatico.ca> > To: <pianotech@ptg.org> > Sent: Saturday, December 04, 1999 10:27 PM > Subject: Re: Yamaha C7 > > > > Hi David, > > This has worked for me, and seems long lasting. > > 1. Remove the wippens > > OK > > > 2. Unhitch the rep springs > > OK > > > 3. Clean the ends of the springs with naptha. > > Naptha?? A clean cloth does the job! > > > 4. Take a vertical hammer shank and sharpen the end with a pencil > > sharpener, it makes an ideal to burnish the slot. > > 5. Burnish the slot vigorously with the shank, resharpen as required. > > 6. With a small artist brush coat the bottom of the slots with dag. > > 7. Reburnish with the sharpened shank. > > Burnish... OK....Yamaha doesn't use dag. > > > 8. Reassemble and budget for a major reg. > > Eliminating the the "friction" in the rep spring groove constitutes "major > regulation"???? > > > Hope this helps. > > Roger > > > > > > > > At 11:14 PM 03/12/99 -0800, you wrote: > > >List, > > > > > >I worked on a Yamaha C7, #5070074, about 8 years old. I > > >noticed a odd clicking, frictioney sound and feel. I removed a > > >wippen and found green "emrylon"? in rep spring groove. > > >Where the spring contacted the groove the emrylon was gone > > >and there was a wood/white spot. I'm not sure if there is a > > >dent in the groove but a drop of Protek temporarily? fixed it. > > >Worked smooth as can be. What is the correct lube here? > > >Should I smooth groove with a cuticle stick or such? Is this a > > >warranty item? > > > > > >David Ilvedson, RPT > > >David Ilvedson, RPT > > >Pacifica, CA > > >ilvey@jps.net > > > > > Roger Jolly > > Saskatoon, Canada. > > 306-665-0213 > > Fax 652-0505 > > >
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