Raytheon Beech Baron E55 - Page 111

RBytheOll
Aircraft
Company
BARON
55
AND
58
SHOP
MANUAL
LIGHT
TRA
YREMOVAL
a.
Remove
the
screws
that
secure
the instrument
panel
in
place
and
tilt
the
instrument
panel
aft
to
gain
access
to
the instruments,
NOTE:
Instruments
located
at
the
lower
edge
of
the
panel
may
be
removed if
necessary
to
gain
access
to
the
light
tray
at
the
top
of
the
instruments.
b.
Remove
the
two
screws
that
attach the
light
tray
to
the
instrument bezel.
LIGHT TRA
Y
INSTALLA TION
a.
Install
the
new
light
tray
and
secure
in
place
with the
two
attaching
screws.
b.
Install the instrument
in
the
instrument
panel
if
removed
and
secure
in
place
with
the
attaching
screws.
c.
Secure
the instrument
panel
in
place.
VACUUM
SYSTEM
REPLACING
THE
GYRO INSTRUMENT
AIR
FILTERS
The
replacement
of
the
gyro
instrument
air filters
may
be
accomplished
without
removing
the
instrument
from
the
I
airplane.
The
frequency
of
cleaning
or
replacing
the
air
filters will
depend
upon
service
conditions.
They
must
be
replaced
approximately
every
300
hours
of
operation
or
annually,
whichever
occurs
first.
When
operating
in
localities
where there
is
an
excessive
amount
of sand
or
dust
in the
air,
or
when
subjected
to
continuous
cabin smoke
(tobacco),
the filter
should
be
inspected
and
replaced
at
more
frequent
intervals
if
necessary.
Under
extremely
dusty
conditions,
it
may
be
necessary
to
inspect
the filter
daily.
A
clogged
filter
reduces air
flow and
slows
up
the
rotor,
causing improper
gym
indication
due
to
a
loss
of
gyroscopic
inertia.
To
replace
the
filter
assembly
on
the
instrument,
remove
the
air
filter
body
cover
by
taking
out
the
four
fillister-head
machine
screws.
Lift
out
the
snap
ring
which holds the filter in
place,
remove
the
filter,
and
replace
it
with
a new one.
Replace
the
air filter
body
cover
and
gasket,
securing
them
with
the
screws.
If
the air
filter
body
cover
is
not
used,
the
filter
may
be removed
by
lifting
the
snap
ring
past
the four
protective lugs.
I
CENTRAL
AIR
FILTER
(TC-1014
AND
AFTER;
TE-208
AND
AFTER)
A
central
instrument
air
filter
(two
installed
on
airplanes
equipped
with dual
instrumentation)
is
incorporated
in
the
instrument
plumbing
lines
to
protect
the instruments
from
dust
and other
foreign
particles.
This
filter(s)
is
a
sealed
I
unit
mounted
ona
bracket
behind the instrument
panel
and should be
replaced
every
300
hours
(or
less
during
operation
in
dusty
or
heavy
smoke
conditions)
or
annually,
whichever
occurs
first.
Replacement
is
made
as
follows:
a.
Locate
the
filter(s),
mounted
centrally
behind the
control
panel
at
the
base of
the
panel.
b.
Remove the
wing
nut
at
the
base
of the filter
housing
and
remove
the filter from
the bracket.
c.
Disconnect
the
hose
at
the
top
of the
filter
by
removing
the
attach
clips.
d. Discard
the
old filter and
install
a new
filter
by
reversing
the
above
procedure.
Page
SECTION
2
E23