Yamaha C7

[Roger Jolly]

Hi David,
             This has worked for me, and seems long lasting.
1. Remove the wippens
2. Unhitch the rep springs
3. Clean the ends of the springs with naptha.
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.
8.  Reassemble and budget for a major reg.

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