PianoDisk Removal

[Dean May]

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Terry,
 
The solenoid rails are mounted on threaded studs screwed into the
keybed. The rail mounting bracket has a nut on top and a nut on bottom
allowing vertical height adjustment. You don't want to mess with this
height adjustment unless you know what you are doing. You can loosen the
lower nut; just don't mess with the upper nut. 
 
You really don't want to fully remove the solenoid rails, only lower
them. Usually just one turn or so of the lower nut will drop the
plungers below the top surface of the keybed. Then when you are done,
simply tighten it back up and the rail should return to its original
location. You might need to make a fore and aft adjustment if the
plungers miss the end of the keys when you are done. You'll figure it
out.
 
You should probably use a piece of heavy paper or something (wide
masking tape?) to cover the slot while you are working over it to keep
debris from dropping in the solenoids. 
 
Dean
Dean May             cell 812.239.3359
PianoRebuilders.com   812.235.5272
Terre Haute IN  47802
 
-----Original Message-----
From: pianotech-bounces@ptg.org [mailto:pianotech-bounces@ptg.org] On
Behalf Of Terry
Sent: Monday, March 14, 2005 5:42 PM
To: pianotech@ptg.org
Subject: PianoDisk Removal
 
I am repining the back-action on a 10-year old (about) Hyundai grand.
The piano has a PianoDisk CD system installed on it (just the playback
feature). I was thinking that it would be easiest to reassemble the
back-action outside of the piano rather than with the back-action rail
installed on the belly rail. However, it appeared there was no way to
remove the back-action while it was assembled - because the PianoDisk
plunger thingees (the things that activate the keys) interfere - so I
assume it would not be possible to install it after it is assembled. I
thought it might be easiest to drop the PianoDisk rail (with the plunger
thingees) out of the way for back-action installation.
 
So, the question is: How difficult is it to remove/re-install the
PianoDisk plunger rail - and if it is a reasonably thing to do, any
tips? My guess is that I could figure it out on my own - I imagine just
a few nuts/bolts/screws to remove the thing just drops down (unplug
first!) - but I also figure it is always best to ask someone that has
done this before. Anyone?
 
Thanks.
 
Terry Farrell

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