TM 55-1520-240-23-8
10-1
FUEL SYSTEM
(Continued)
10-1
FUEL TRANSFER
Fuel is pumped from the main tank into the fuel feed
line by two boost pumps. Fuel is transferred from each
auxiliary tank to the main tank through an internal boost
pump. Thermistors on the pump shut it off when fuel
is depleted.
NO BREAK - WORK HARDER
Fuel transfers from the aft auxiliary tank through the
same tube in the main tank that is used to refuel the aft
tank during pressure refueling. Fuel passes through the
top orifice in this split manifold and enters the main tank
through the bottom orifice in this split manifold.
NO BREAK - WORK HARDER
In addition to the engine fuel feed and APU fuel feed
systems there is a heater fuel feed system.
NO BREAK - WORK HARDER
The heater fuel feed line leads from the cross connector
in the right aft intertank bay. The fuel passes a
solenoid-operated valve, enters the fuselage, and leads
forward to the heater.
APU FUEL FEED SYSTEM
The APU fuel feed system begins in the left aft intertank
area. Fuel from the main tank enters the cross connector
and passes into the APU line on top of the connector.
The fuel line passes through a boost pump and solenoid
valve before entering the fuselage. Inside the fuselage,
the fuel line passes through a manual shutoff valve at
sta. 540. It passes a quick-disconnect fitting at sta. 600
and enters the APU.
10-10
