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BEECHCRAFT Sundowner
180
Section VIII
C23 (M-1285
and
After)
Handling,
Serv
-
Maint
automatically
close
when
the Flush Fuel Drain
Tool
is
removed.
The
fuel drain valves can be locked open by
pushing
up
with
the Flush Fuel Drain
Tool
and turning
counterclockwise.
To
close the
valve,
turn
the
valve
clockwise and remove the Flush Fuel
Drain Tool.
The
Flush Fuel
Drain Tool is provided
with the
loose
tools
and accessories.
The
system
low spot drain
is incorporated
in
the fuel
strainer
on the lower right side of the fuselage aft of the
nose wheel.
Inspection
and cleaning of the fuel strainers
should be
considered
of
the utmost importance
as a regular
part
of
preventive
maintenance.
The
following
inspection
and
cleaning
intervals
are recommendations
only,
since
the
frequency
will
depend
upon
service conditions and fuel
handling cleanliness.
When
operating
in localities
where
there
is
an excessive amount
of
sand or dirt, the strainers
should be
inspected
at more frequent
intervals.
The
screen
in
the fuel
strainer
at the
system
low
spot
on
the bottom
of
the fuselage should be
removed
and washed
in
fresh cleaning solvent at
each
100-hour
inspection of
the airplane. Ordinarily, the finger strainers
in
the fuel
tank outlets should not require cleaning unless there
is
a
definite
indication
of solid foreign
material
in the tanks,
or
the airplane
has been
stored for
an
extended
period.
After
the fuel strainers have been
reinstalled,
the
installa-
tions should be checked for
leakage.
Any
fuel
lines
or
fit-
tings disconnected
for maintenance
purposes
should be
capped.
Frequently
inspect
the O-rings on the
fuel
filler caps for
condition.
Replace
as required to
prevent
contamination
of
the
fuel
from
precipitation.
February 1979
8-13
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