TM 55-1510-219-10
Figure 2-13. Fuel Management Panel and Auxiliary Tank Mechanical Gage
(1)
Fuel gaging system control switch. A
switch on the fuel management panel (fig. 2-13)
placarded FUEL QUANTITY, MAIN AUXILIARY, controls
the fuel gaging system. When in the MAIN position the
fuel gages read the total fuel quantity in the left and right
wing fuel system. When in the AUXILIARY position the
fuel gages read the fuel quantity in the left and right
auxiliary tanks only.
(2)
Standby
fuel
pump
switches.
Two
switches, placarded STANDBY PUMP ON located on the
fuel management panel (fig. 2-13) control a submerged
fuel pump located in the corresponding nacelle tank.
During normal aircraft operation both switches are off so
long as the engine-driven boost pumps function and
during crossfeed operation. The loss of fuel pressure,
due to failure of an engine driven boost pump will
illuminate
the
MASTER
WARNING
lights
on
the
glareshield and will illuminate the #1 FUEL PRESS or #2
FUEL PRESS on the warning annunciator panel. Turning
ON the STANDBY PUMP will extinguish the FUEL
PRESS lights. The MASTER WARNING lights must be
manually cleared.
NOTE
Both standby pump switches shall
be off during crossfeed operation.
(3)
Fuel transfer control switches. Two
switches on the fuel management panel (fig. 2-13),
placarded AUX TRANSFER OVERRIDE AUTO control
operation of the fuel transfer pumps. During normal
operation both switches are in AUTO which allows the
system to be automatically actuated by fuel flow to the
engine. If either transfer system fails to operate, the fault
condition is indicated by two illuminated MASTER
CAUTION lights on the glareshield and a steadily
illumihated yellow #1 or #2 NO FUEL XFR light on the
caution annunciator panel.
(4)
Fuel crossfeed switch. The fuel crossfeed
valve is controlled by a 3-position switch (fig, 2-13),
located on the fuel management panel, placarded
CROSSFEED OFF. Under normal flight conditions the
switch is left in the OFF position. During emergency
single engine operation, it may become necessary to
supply fuel to the operative engine from the fuel system
on the opposite side. The crossfeed system (fig. 2-15) is
placarded for fuel selection with a simplified diagram on
the overhead fuel control panel. Place the standby fuel
pump switches in the off position when crossfeeding. A
lever lock switch, placarded CROSSFEED, is moved from
the center OFF position to the left or to the right,
depending on direction of fuel flow. This opens the
crossfeed valve and energizes the standby
2-31
