TM 1-1520-238-T-7
10–210
10–76. PRESSURE REFUELING/DEFUELING – MAINTENANCE OPERATIONAL CHECK (cont)
10–76
M70-076
REFUELING PANEL
FWD FUEL QTY
INDICATOR
AFT FUEL QTY
INDICATOR
FUEL
QTY
SWITCH
AFT
CLOSED
INDICATOR
REFUEL
VALVE
INDICATOR
REFUEL
VALVE
SWITCH
Figure 10–79.
Refueling Panel
5. Complete the maintenance operational check as follows:
Task
Result
a. On refueling panel (fig. 10–79), set FUEL
QTY switch to IND ON. AFT and FWD
FUEL QTY indicator needles indicate fuel
loads in aft and forward fuel cells.
If AFT FUEL QTY indicator does not indicate aft fuel
load, with FUEL QTY switched at IND ON, go to
paragraph 10–80.
If FWD FUEL QTY indicator does not indicate forward
fuel load with FUEL QTY switch at IND ON, go to
paragraph 10–81.
b. On refueling panel, set REFUEL VALVE
switch to OPEN. Refuel valve is heard to
open, REFUEL VALVE OPEN indicator is
lighted on pilot caution/warning panel
(fig. 10–80), and air is heard venting
overboard. Assure both LVL CONT VALVES
switches are set to CLOSE.
If FUEL FILL circuit breaker does not stay closed with
LVL CONT VALVES switches set to CLOSE, go to
paragraph 10–94.
If REFUEL VALVE OPEN indicator is not lighted with
REFUEL VALVE switch set to OPEN, replace lamp
(TM 1-1520-238-23). If lamp is still not lighted, go to
paragraph 10–78.
If fuel system air pressure is not heard venting
overboard, go to paragraph 10–99.
c. On pilot caution/warning panel, check that
REFUEL VALVE OPEN indicator is lighted.
If REFUEL VALVE OPEN indicator on pilot
caution/warning panel is not lighted with REFUEL
VALVE switch set to OPEN, replace lamp
(TM 1-1520-238-23). If lamp is still not lighted, go to
paragraph 10–79.
