Yamaha C7

Jon Page jonpage@mediaone.net
Sun, 05 Dec 1999 13:47:32 -0500


At 11:27 PM 12/04/1999 -0600, you wrote:
>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.

I also place Dag in the spring slot on the jack.

>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
>  
Jon Page,  Harwich Port,  Cape Cod,  Mass.  mailto:jonpage@mediaone.net
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~



This PTG archive page provided courtesy of Moy Piano Service, LLC