Auxiliary Fuel Pump Operation; Fuelventing; Fuel Selector Valve - Cessna 182S Skylane Information Manual

SECTION
7
AIRPLANE
&
SYSTEMS DESCRIPTION
CESSNA
MODEL 182S
Fuel pressure is measured by use of a transducer mounted near
the fuel manifold. This transducer produces
an
electrical
signal
which is translated in the cockpit-mounted indicator
as
gallons-per-
hour. Normal operating (green arc) range
is from 0
to
15 gallons-
per-hour.
AUXILIARY FUEL PUMP OPERATION
The auxiliary fuel pump
is
used primarily
for
priming
the
engine
starting. Priming
is
accomplished
through
the
regular
ion system.
lf
the
auxiliary
fuel pump switch
is
accidentally
d
in the ON
position
for
prolonged periods (with master
switch
d
on and mixture rich) with
the
engine stopped,
the
intake
will
be
flooded.
The
auxiliary
fuel pump is also
used
for vapor suppression in hot
ather. Normally, momentary use
will be
sutficient
for
vapor
;
however, continuous operation
is
permissible
¡f
required. Turning
on the
auxiliary
fuel
pump with
a
normally
operating
engine
pump will result in only a very minor enrichment
of
mixture.
It is
not
necessary
to
have
the
auxiliary
fuel pump
operating
Íng normal takeotf and landing, since gravity and
the
engine-
/en pump will supply adequate fuel flow
to the fuel
injector
unit.
the event of failure of the
engine-driven
fuel pump, use of
the
fuel
pump
will provide
sufficient fuel
to
maintain
flight
at
rcontinuous power.
FUEL VENTING
Fuel system
venting is
essential
to
system operation.
Blockage
of
the venting system will result in decreasing fuel flow and
eventual
engine stoppage. Venting
is
accomplished
by an
interconnecting
line from the right fuel Ìank
to the
left fuel tank, and check
valve
equipped overboard vents
in
each
tank.
The
overboard
vents
protrude from the
bottom
surfaces of the
wings
behind
the
wing
struts, slightly
below
the upper attach points of the struts. The
fuel
filler caps are vacuum vented; the vents will open and allow air
to
enter
the fuel tanks
in
case the
overboard vents become blocked.
FUEL SELECTOR
VALVE
The fuel
selector valve should
be in the
BOTH position for
takeoff, climb, landing, and
maneuvers
that involve prolonged
slips
or skids of
more than
30
seconds. Operation from either LEFT
or
RIGHT
tank is reserued
for cruising flight.
7-28
June
13/97