S&S: key-frame return spring

[Jon Page]

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Remove the spring and polish the contact surface.
Make sure the screws are tight.

Jon Page

At 08:54 PM 11/21/2000 -0600, you wrote:
>Hello all,
>
>Today I managed to find the elusive source of shift-pedal squeeks and groans
>in a B, and with careful effort and attention actually made it worse!
>
>Once I had determined the cause (spring against (wooden) key frame), I
>carefully sanded the side smooth, applied a generous coat of DAG, and
>burnished with a cloth.
>
>It worked instantly, and lasted about 3 minutes!  Once the DAG was well
>burnished, it began to groan as before, but louder!  And now, in addition to
>the fundamental, there were additional squeeks a major 3rd above and major
>2nd below!?
>
>At a loss, I worked teflon powder into the graphite and with vigorous use,
>the noise has not returned. Tefloning and testing the two contact points of
>the spring seperately helped verify the source, as one "note" of the
>non-musical "interval" disappeared with the first treatment, then the
>remaining two.
>
>I fear this remedy will not last though, so what is your favourite tried &
>true, long-lasting, never-fail, method?
>
>Thanks for your suggestions,
>
>Mark Cramer,
>Brandon University

Jon Page,   piano technician
Harwich Port, Cape Cod, Mass.
mailto:jonpage@mediaone.net
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