Piper SARATOGA PA-32-301 Maintenance Manual page 289

PIPER AIRCRAFT
PA-32-301/301T
MAINTENANCE MANUAL
GENERAL.
The fuel system consists of two interconnected tanks in each wing, having a combined capacity of 53.5
U.S. gallons. for a total capacity of 107 U.S. gallons. The inboard tanks become an integral part of the wing
surface when installed. Fuel flow is indicated on the gauge located in the instrument panel. A fuel quantity
gauge for each wing system is also located in the instrument panel, and indicates the amount of fuel remaining
as transmitted by the electric fuel quantity sending units located in the wing tanks. An exterior sight gauge is
installed in the inboard tank of each wing so fuel quantities can be checked on the ground during the preflight
of the airplane.
Fuel is drawn through a finger screen located in the inboard fuel tank and routed to a three position fuel
selector valve and filter unit which is located aft of the main spar. The valve has "OFF." "LEFT" and
"RIGHT" positions which are remotely selected by means of a torque tube operated by a handle located in the
pedestal. The handle has a spring loaded detent to prevent accidental selection to the "OFF" position. From
the selector valve the fuel goes to the electric fuel pump which is also mounted aft of the main spar and then
goes forward to the engine driven fuel pump which forces the fuel through the injector unit into the engine.
Refer to Figure 28-1 or 28-2 for layout and relationship of the fuel system and components.
TROUBLESHOOTING.
Electrical and mechanical troubles of the system are found in Chart 2801. When troubleshooting. check
from the power supply to the items affected. If no trouble is found by this method. the trouble probably exists
inside individual pieces of equipment: they may then be removed from the airplane and an identical unit or
units. tested and known to be good. installed in their place.
CHART 2801. TROUBLESHOOTING (FUEL SYSTEM)
Trouble Cause
Remedy
Failure of fuel to flow.
Fuel line blocked.
Flush fuel system.
Fuel vent cap blocked.
Check and clean vent
hole in cap.
Mechanical or electrical
Check and replace if
fuel pump failure. necessary.
Fuel selector valve
Reposition as required.
in improper position.
Check for obstructions
in the fuel selector
leverage mechanism.
Damaged fuel selector
Replace fuel selector
valve.
valve.
28-01-00
Page 28-01
2A20
Revised: August
11,
1983
2A20