SECTION 7 CESSNA
AIRPLANE AND SYSTEMS DESCRIPTION
MODEL 182T NAV
Ill
FUEL
SYSTEM
(Continued)
FUEL VENTING
Fuel system venting is essential to system operation.
Complete
blockage of the venting system will result in decreasing fuel flow
and eventual engine stoppage. Venting consists of an
interconnecting vent line between the tanks 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 is a four-position selector valve, labeled BOTH,
RIGHT, LEFT and OFF. The selector handle must be pushed down
before it can be rotated from RIGHT or LEFT to OFF. The top
portion of the valve is the return portion of the valve, while the
bottom portion of the valve is the supply portion. Each side is
isolated from the other.
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 reserved for cruising flight.
NOTE
When the fuel selector valve handle is in the BOTH position
in cruising flight, unequal fuel flow from each tank may
occur
if
the wings are not maintained exactly level.
Resulting wing heaviness can be alleviated gradually by
turning the selector valve handle to the tank in the "heavy"
wing.
(Continued Next Page)
7-44 U.S.
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