Raytheon Beech Baron E55 - Page 113

Raylheon
Aircraft
Company
BARON
55
AND 58
SHOP
MANUAL
PROPELLERS
Since
propellers
are
subject
to
severe wear
and
atmospheric
conditions,
check blades
and
dome
for oxidation
and
corrosion. Brush
area
with
a
phosphatizing
agent
to
remove
superficial
corrosion.
Smooth
etched
and
pitted
areas
by
buffing
smooth
with
an
aluminum
polish.
Take
the
following
precautionary
measures
while
cleaning
the
propellers:
a.
Be
sure
ignition
switches
are
OFF before
cleaning propellers.
b.
If
a
liquid
cleaner
is
used,
avoid
using
excessive
amounts
because
it
may
spatter
or
run
down
the
blade and
enter
the
hub
or
engine
accessories.
c.
Check
area
around
hub
to
be
sure
all
compound
is
removed.
PROPELLER
UNFEATHERING
ACCUMULATORS
To
insure
proper
operation,
the
accumulator
should
be
checked
periodically
for
correct
pressure.
When
checking
the
air
pressure,
the
propeller
control should
be
in
the low
pitch position
so
that
all
oil
can
be
exhausted from the
accumulator.
The
pressure
in
the
propeller
accumulators
should
be maintained
at
100
5
psi.
When
inflating
the
accumulator,
use
commercial
dry
air
or
nitrogen.
The
accumulators
are
located
in,
and
may
be
serviced
through,
an
access
door
in
the
top
inboard
side of
each nacelle.
PROPELLER
ANTI-ICER SYSTEM
(ALCOHOL)
The anti-icer
tank is
located beneath the
left
floorboard of
the
forward
utility compartment
and
has
a
capacity
of
3
U.S.
gallons.
The tank
filler
cap
may
be
reached
by removing
an access
door
in
the floor
of
the
utility
compartment.
I
Check the
tank fluid
level
before
each
cold
weather
flight
and
refill
with
anti-icer
fluid
(30,
Chart
3),
if
necessary.
The
tank
should
be
drained
and
flushed
twice
a
year.
NOTE:
The anti-icer
tank should
be
flushed
only
with anti-icer
fluid
(30,
Chart
3).
The
use
of
other
types
of
fluids
may
cause
chemical reaction that will
corrode
aluminum. This
will
create
a
gummy
residue
in the
system
and
make
the
system
inoperative.
CLEANING
DNCER
BOOTS
The
boots should
be
checked for
engine
oil
after
servicing
and
at
the endof each
flight,
and
any
oil
found
should be
removed.
This
can
be
accomplished,
preferably,
by
the
use
of
a
neutral
soap
and
water
solution.
If
necessary,
however,
the
oil
may
be
removed
by wiping
the
boot
surface
lightly
with
a
rag
moistened
with
toluol
or
uncontaminated
unleaded
aviation
gasoline.
When
gasoline
is
used,
the surface should be
wiped
dry
immediately
without
allowing
the
gasoline
to
penetrate
into the rubber. Also
care
should be exercised
to
avoid
scrubbing
the
surface
of
the
boot
as
this
will
tend
to
remove
the thin
coating
of
conductive
cement.
NOTE:
Since
deicer
boots
are
made of
soft,
flexible
stock,
care
must
be
exercised
against
dragging
gasoline
hoses
over
them
or
resting
ladders
or
platforms against
the
boot’s
surface.
SEA
TS
I
ROTONLOCKS
Usually,
Roton
locks
will
need
no
service.
If
there is
a
grinding
and
binding
in
the
lock
as
the
seat
reclines
or
the
return
action
becomes
jerky,
a
little
grease
properly
applied
as
follows
should
improve
the
operation.
I
a.
Use
only
lubricating
grease
(11,
Chart
3)
on
the thread
(Ref.
Figure
4).
Too
much
grease
or
grease
in
the
wrong
place
can cause
improper
operation.
Page
28Dec
31/04
SECTION
2
E23