Yamaha Spinet

Billbrpt@AOL.COM Billbrpt@AOL.COM
Mon, 21 Feb 2000 00:06:17 EST


In a message dated 2/20/00 5:58:06 PM Pacific Standard Time, 
piano_tunertx@yahoo.com writes:

<< I was able to remove the hammer
 butt without removing the action (thanks to my long
 flange screw screwdriver). Not having arms like an
 octopus, I don't think I'll be able to get the hammer
 butt back in without removing the action.  >>

If you got it out, you can get it back in.  It is difficult, yes, and you may 
want to allow 20-30 minutes for it but it would probably involve more than 
that to take the entire action out.  I have removed many spinet actions and 
serviced them.  It is possible to do this quickly and efficiently but it does 
take practice, like anything else.

If you decide to go the action removal route, you should detach the grommets 
from the keys and lift the keys out and place them in order on the floor or a 
table.  Have a vacuum handy to clean out the inevitable dirt and debris.  
Don't belabor the point just as in tuning.  Do everything as quickly as 
possible, keeping your concentration on the task at hand: detach the grommet, 
lift out the key.

Once the keys are out of the way, it will be easy to detach the action and 
lift it out.  Some technicians tie up the loose stickers but I was shown at 
the Kimball factory way back in 1982 that this is unnecessary.  With the 
action detached from its mountings, simply pull upward and slightly backward 
and the whole thing will lift out and the stickers will fall freely downward. 

When placing the action on the work surface, gently lower the action so that 
the stickers touch first and fold under the rest of the action as you set it 
down.  There is one exception tom this, a certain style of Balwin Spinet 
action where I use either string or long rubber bands to keep the sticker 
guide rail attached to the stickers.  It is really a mess if these two come 
apart.

It would be foolish and negligent to not tighten all of the flange screws 
once you have the action out.  Budget 20 minutes for this and inform the 
customer of the serendipitous bonus that is part of taking the action out.  
Sometimes it is preventative maintenance, often it is sorely needed 
maintenance.  You can also correct any uneven spacing and file hammers if it 
seems beneficial. 

Many technicians use an action cradle to work on the action but again, I find 
that unneacessary.  With the keys out, you can often use the keybed as a work 
surface.  Just use some rags or other pads to keep any  loose and dangling 
parts or the action support mountings from marring the case.

In many cases, if you replace the action, take up all lost motion, throw a 
punching under any obviously low keys (and please, *under* the balance rail 
cloth punching, not on top of it), and give each let off button 2 half twists 
counterclockwise, you will have a piano that functions far better than it 
did.  Be sure to check for blocking hammers and fine adjust the let-off if 
you have time.  Spinet action let off should be no closer than 1/8".

Sometimes, a thin shim to prop up the rest rail and a little further lost 
motion adjustment is needed to get adequate aftertouch.  But don't over do 
this.  Having a minimal amount of aftertouch but having the hammer checking 
fairly closely will make any spinet piano play and repeat very well.  I also 
routinely use the "Wet Lube" that I get from Schaff piano supply to spray 
both the keypins and the key bushings before installing the keys.  This helps 
them go in easier and practically eliminates the need for key easing in many 
cases.

It boils down to the old, "Well if we got to take it apart this much to get 
at the problem, then we might as well do some other maintenance besides".  It 
is one way for both you and the customer to benefit.

Good luck,

Bill Bremmer RPT
Madison, Wisconsin


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