TM 1-1520-238-T-7
10–27
10–6.
CONTROLS AND INDICATORS (cont)
10–6
Table 10–1.
Fuel System Controls and Indicators (cont)
M70-238A
PRESS TO TEST
SWITCH
INDICATOR
NITROGEN INERT MONITOR Indicator
Refueling Panel
SWITCH/INDICATOR
POSITION
FUNCTION
FUEL QTY switch
IND ON
Enables FUEL QTY indicator to display fuel quantity in
forward and aft fuel cells.
OFF
De-energizes FUEL QTY indicator.
FUEL QTY indicator
Indicates fuel quantity in forward and aft fuel cells.
Refuel valve OPEN indicator
Indicates refuel valve switch is open when lighted.
Refuel valve switch
OPEN
Energizes fuel transfer valve and fuel vent shutoff valve.
CLOSE
REFUEL VALVE
De-energizes fuel transfer valve and fuel vent shutoff
valve.
FWD TNK LVL CONT VALVES
switch
CLOSE
Allows checking of forward fuel level control valve for
automatic shutoff after refueling begins.
OPEN
Opens fuel control valves in forward fuel cell. Turns off
indicator and allows refueling to continue.
AFT TNK LVL CONT VALVES
switch
CLOSE
Allows checking of aft fuel level control valve for
automatic shutoff after refueling begins.
OPEN
Opens fuel control valves in aft fuel cell. Turns off
indicator and allows refueling to continue.
FWD CLOSED indicator
Lights when forward fuel level control valve is closed
when lighted.
AFT CLOSED indicator
Lights when aft fuel level control valve is closed when
lighted.
