Installa on Procedure
12
July 2013
Key Solenoid Rail Assembly
‐
Solenoid to Key Alignment
With
the
piano
ac on
on
your
workbench
and
the
fronts
of
the
keys
facing
away
from
you.
Place
the
solenoid
rail
on
the
workbench
in
front
of
the
keytails
and
put
the
plungers
inside
the
solenoids.
Turn
the
solenoid
rail
assembly
on
its
side,
so
that
the
plungers
are
now
parallel
to
the
workbench
surface
and
the
felt
plunger
ps
are
touching
the
back
ends
of
the
piano
keys.
The
fi
rst
plunger
should
start
all
the
way
to
the
le
side
of
the
rail.
Secure
the
rail
and
ac on
with
the
two
clamps
so
they
will
not
move
during
the
alignment
process.
Mark
which
side
is
bass
and
treble.
Make
sure
all
the
solenoid
plates
are
free
moving.
If
they
are
not,
use
an
11/32”
nut
driver
to
loosen
them.
The
spacing
between
sec ons
has
been
held
in
check
by
the
introduc on
of
solenoid
assembly
pairs
adjacent
to
the
breaks.
Because
not
all
sec ons
on
a
piano
will
have
an
even
number
of
notes
played
in
them,
those
which
have
an
odd
number
will
require
a
modi
fi
ed
solenoid
assembly
to
provide
the
addi onal
note
required,
and
this
modi
fi
ed
note
will
be
placed
adjacent
to
a
sec on
break
or
at
either
end.
Count
the
number
of
keys
to
be
played
in
each
sec on.
If
there
is
an
even
number,
align
the
solenoids
with
plungers
already
on
the
rail
with
the
centers
of
their
respec ve
key
tails.
If
the
number
of
keys
to
be
played
is
odd,
simply
re
‐
move
one
of
the
solenoids
from
the
double
moun ng
bracket
and
con nue
to
the
alignment
of
the
next
sec on.
If
necessary,
cut
away
the
unused
por on
of
the
rail
ends
with
a
hack
saw
and
fi
le
o
ff
all
burrs
with
a
metal
fi
le.
Be
careful
not
to
cut
away
the
rail
bracket
moun ng
holes,
or
cut
any
solenoid
wires.
Mount
all
8
rail
support
brackets
to
the
rail
with
the
10
‐
32
X
7/16"
screws
and
#10
external
star
washers.
Note: The distance from the bo om of the keybed to the bo om of the keytail felt should be equal to the distance
from the top of the solenoid plunger to the top of the rail moun ng brackets.
At
this
stage,
the
key
solenoids
have
been
matched
up
with
their
corresponding
keytails.
The
rail
has
been
cut
to
length,
and
the
rail
brackets
a ached
in
place.
Put
the
rail
aside
for
future
installa on
in
the
piano.
Summary of Contents for PMII
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