FUEL SERVICING - CLOSED CIRCUIT REFUELING (CCR) METHOD continued
h. Service fuel tanks as required.
(1) To refuel, select level control valve switch
position and advisory indicator condition from
TANKS TO BE REFUELED
FWD TNK / AFT TNK SWITCHES
LEVEL CONT VALVES
The fuel system may be damaged if air
does not vent from fuel cells during ser-
i. Check vent tubes (17) and (18) for escaping
j. Stop fuel servicing if air does not escape from
vent tubes (17) and (18).
FWD CLOSED and AFT CLOSED indi-
cators will light when fuel cell is full and
automatic shutoff has occurred.
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