TM 1-1520-238-T-7
10–201
10–72. GRAVITY REFUELING/DEFUELING – MAINTENANCE OPERATIONAL CHECK (cont)
10–72
M70-072
REFUEL VALVE
OPEN INDICATOR
Figure 10–74.
Pilot Caution/Warning Panel
Task
Result
e. Pull fuel cell filler cap out of fuel cell filler
neck (fig. 10–73) to open fuel/defuel
controllable check valve.
If fuel/defuel controllable check valve does not open,
go to paragraph 10–73.
f. Place check valve control cable in hold-open
detent. Check that valve stays open.
If hold-open detent does not hold check valve control
cable, replace fuel filler neck (TM 1-1520-238-23).
g. Attach fuel nozzle static ground plug to
refueling ground jack on helicopter. Plug
stays in jack.
If ground jack does not retain fuel nozzle ground plug
due to damage to jack, replace ground jack
(TM 1-1520-238-23).
h. Place fuel nozzle in cell filler port and start
loading fuel. Check fuel cell for leaks.
If fuel leaks from fuel cell, go to paragraph 10–13.
NOTE
If fuel load is to be less than full, monitor FUEL QTY indicator on refueling
panel (fig. 10–73). Stop loading fuel in cell when desired fuel is aboard,
then go to step j. below.
i. Check for fuel to appear in filler neck. Stop
loading fuel when cell is topped off.
j. On refueling panel, check FUEL QTY
indicator when fuel appears in filler neck.
FUEL QTY indication is F.
If FUEL QTY indication is not F with fuel level in filler
neck, go to paragraph 10–80 when checking aft fuel
cell or paragraph 10–81 when checking fwd fuel cell.
