S 973-083
(2)
Calculate the weight of the quantity of fuel that you must put into the tank with the bad indicator.
S 653-084
(3)
Move the quantity of fuel (calculated before) from a tank with good fuel quantity indicators to the defueled tank.
S 653-085
(4)
Refuel the tank from which you moved the fuel.
TASK 12-11-04-653-090
3. Pressure Refueling Operation For An Inoperative Refuel Valve
____________________________________________________________
A. General
(1) You can refuel a tank with a refuel valve that does not open electrically but can be opened manually.
B. References
(1) AMM 20-40-11/201, Static Grounding
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A
737-300/400/500MAINTENANCE MANUAL
C. Access
(1) Location Zones
221 Center Section Tank
305 Left Fuel Tank
405 Right Fuel Tank
D. Procedure
S 863-091
WARNING: OBEY ALL OF THE APPLICABLE PRECAUTIONS AND LIMITS FOR PRESSURE
_______ FUELING. INJURY TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR.
(1)
Do this task: Precautions and Limits for the Refuel Operation (AMM 12-11-01/301).
S 863-092
(2)
Electrically ground the airplane and fuel truck (AMM 20-40-11/201).
S 863-093
(3)
Connect the bonding cable on the reueling hose to the ground jack on the wing.
NOTE: The bonding cable is not necessary if there is electrcal
____ continuity between the nozzle and the receptacle.
S 013-094
(4)
Make sure the access door for the refueling panel is open.
S 713-095
(5)
Make sure the fuel tank quantity indicator for the tank you will refuel is operative.
S 653-096
(6)
Do these steps to put fuel into the tank with the refuel valve that does not open:
(a)
Connect refueling hose nozzle to the fueling receptacle.
(b)
Start the fuel source pump.
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737-300/400/500MAINTENANCE MANUAL
CAUTION:_______ DO NOT PERMIT THE FUEL QUANTITY TO BE MORE THAN THE
MAXIMUM FUEL QUANTITY FOR THE APPLICABLE TANK. THERE IS
NO AUTOMATIC SHUTOFF. A FUEL SPILL CAN OCCUR.
CAUTION: MONITOR THE REFUEL PANEL INDICATORS TO MAKE SURE THEY DO
_______ NOT START TO FLASH. IF THE PANEL INDICATORS FLASH, THE FUEL TANK CAN BE OVERFILLED. THIS CAN CAUSE A FUEL SPILL TO OCCUR.
(c)
For the tank whose refuel valve does not open, push the red fueling manual override button to open the refuel valve or that tank.
(d)
Continue to hold down the red button.
(e)
Monitor the fueling indicator for the tank with the refuel valve that does not open.
(f)
When the fueling indicator shows a full tank or the fuel quantity scheduled for that tank, release the red manual override button.
(g)
Stop the fuel source pump.
(h)
Remove the refueling hose nozzle from the airplane refueling receptacle.
S 973-097
(7) Use the fuel measuring sticks to make sure the correct fuel quantity is in the tank with the refuel valve that does not open.
(a)
Make sure you know the attitude of the airplane.
(b)
Use the fuel measuring stick procedure in the applicable fuel measuring stick document to calculate the fuel quantity in the applicable tank.
S 083-098
(8)
Disconnect the bonding cable that you connected between the fueling source and the airplane.
(9)
Disonnnect the ground cables for the fuel source.
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