Mooney M20M - Removal

SERVICE
AND MAINTENANCE
MANUAL
M20M
MOONEY
AIRCRAFT
CORPORATION
Most
individual avionics
components
are
mounted
in D. Remove
two
screws
(D)
from
underneath,
near
slide out
chassis racks.
Loosen the
screw
on
the face
the
edge
of
the
panel
face.
of
the
component
and
slide the
unit
straight
aft
to
E. Remove
the
MS21919WDG()
clamp
(E)
from
remove.
the
steel
structure
cross
brace,
underneath
the
panel,
Some
components
are
not
mounted in
slide
out
forward
section,
see
(Figure
342).
chassis.
Removal of
these units
will
require
the
same
sequence
as
removal
of
flight
instruments
in
Section
F.
The
panel
should
now
be free
to
slide
aft
39-10-01.
approximately
4-5
inches.
This
will
allow
access
to
the
plumbing
and
electrical connections.
CAUTION
G.
Remove
the
plumbing
or
the
electrical
Radio
panel
must
be
stacked from the bottom
connections
from
the
component
that
will be
removed.
to
the
top.
NOTE
2.
Installation.
Install the
repaired
or
new
unit
in
In
some
instances
components,
other
than the
reverse
sequence
of
removal.
one
to
be
removed,
must
be removed or
at
least
39-10-03
CIRCUIT
BREAKER
PANEL
some
wiring,
or
plumbing
disconnected to
gain
access
to
the
desired
one.
The
circuit breaker
panel
is
an
assembly
that
can
be
pulled
out
as
a
unit
for removal
of
any
switch
or
circuit
H. Remove
thin
lexan
glass
insulation
strip
if
breaker,
required
when
removing
components.
1.
Removal.
i.
Remove
the circuit
breakers
by unscrewing
nut
A.
Remove
the
glareshield
refer
to
Section
from
stem
on
each circuit
breaker
and
push
the
39-10-01.
breaker forward
through
the
panel.
2.
Installation.
B.
Drill
out
3
rivets
on
outside
of
the
airplane
(B)
(Fig.
39-2).
These
are
located forward
of the cabin
A.
Installation
of
new
instrument
or
circuit
breaker
door
hinge
and
above the cabin
air
inlet
scoop
into
the
panel
is
accomplished
in
reverse
sequence
of
approximately
4
inches
below
the
windshield, removal.
C.
Remove
two
screws
from
the
face
of
the
panel
B. Insert
the
lexan
insulator
sheet
in
proper
at
the
upper
left
corner
(C)
(Figure 39-2).
location
to
prevent
any
short circuits.
39-11-00
FLIGHT
INSTRUMENT
PANEL
3
The
flight
instrument
panel
is
a
shock
mounted
panel
containing
various
flight
instruments
for
a
particular
installation
group.
These
instruments
vary
slightly
depending
upon
the
avionics
package
installed.
The
panel
contains
circuit
breakerlswitches,
along with
the
C
Master
Switch,
which
control
most
of
the
systems
of
the
airplane.
Refer
to
Figure
39-3).
Access
for maintenance
of
the
switches
or
related
wiring
is
obtained
by
removing
the
two
attachment
screws
and
pushing
the
switch
forward
through
the
B
panel.
There is
a
common
bus
bar
on
some
of
the
switches
that
will
require
loosening
or
removal
for
switch
replacement.
CAUTION
Care
should
be
exercised
when
replacing
wiring
or
switches
to
ensure
proper
alignment
of
terminal
connections
to
prevent
shorting
between
switches.
CIRCUIT
BREAKER
PANEL
o
o
REMOVAL
CIRCUIT
BREAKER PANEL REMOVAL FIGURE
39-2
39-10-03
4-99
OLDWILLWAYNE