[pianotech] P22 Sticky Keys

[John Formsma]

On Mon, Feb 14, 2011 at 8:26 PM, Dave Bunch <davebpiano at gmail.com> wrote:

> A couple of weeks ago I serviced a new Yamaha P22 at a school I tune for,
> the vocal teacher having complained of many sticky keys. And she was right.
> Probably a half dozen were not returning at all and the rest all had excess
> friction to varying degrees. There was tightness at the front rail bushings
> as well as the balance rail, so I eased every bushing and applied ProTec to
> all key pins. Also checked the action centers and found no excess friction
> there. Then I checked and double checked all keys with the sustain engaged
> and releasing the keys slowly. I wanted to be thorough since this school is
> an hour away. I get a call today that just two days after I worked on this
> piano, the keys were sticking again, just as bad as before! I can't hardly
> believe it but I'm going to take her word for it. Has Yamaha changed
> anything in their new pianos? Different bushing cloth our something? I am
> probably going to have to eat this next service call so I want to get it
> right. Am I missing something?
>
> Dave Bunch
>


With what did you ease the keys? CF tool, or pliers? Sometimes a pliers is
necessary.

One Yamaha M-500S had what you described. I eased the keys the first time
with the soldering iron tool Pianotek sells. Very soon I got a callback that
the sticking keys were back. After easing them with pliers, they have been
OK since. I think that piano also had tight balance holes.

-- 
JF
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