jack center pin bushing

[John Ross]

Hi Kieth,
I have had a few 70's vintage, heavy usage units, small grands. I had to repin
a few hammer flanges that had siezed up. It almost looked like the plating had
worn of the pin, as there was some black residue.
I do find as a rule that the Yamaha is usually troublefree. Except for the
older uprights with the butt plates, which are ok if you service them
properly.
I don't know if Protek would have been a permanent repair for the flange with
the black residue. That is why I chose to repin.
Regards,
John M. Ross
Windsor, Nova Scotia, Canada.

kam544@flash.net wrote:

> List,
>
> Had a funny thing happen yesterday on a 1971 Yamaha Grand that I have
> serviced for the last 21 years.  Actually had to use Protek on one jack
> center pin bushings to free up a little sluggishness.  Wouldn't repeat.
> What a monumental undertaking.  :-))))
>
> I service numerous Yamahas, and that was a first for me.  Tickled my funny
> bone having to do that when some other makes I service require lots of
> Protek from time to time.
>
> Just wanted to share the incredibile reliability of this Yamaha piano.
>
>  Keith McGavern
> kam544@flash.net
> Registered Piano Technician
> Oklahoma Chapter 731
> Piano Technicians Guild
> USA