S 715-013
(10) Make sure the fueling shutoff valves open and close correctly.
(a)
Push the manual override switch on these fueling shutoff valves: 1) The fueling shutoff valve for the No. 1 tank 2) The fueling shutoff valve for the No. 2 tank 3) The fueling shutoff valve for the center tank.
(b)
Make sure these valves move freely to open and to close.
S 715-014
(11) Make sure the fueling shutoff valves operate correctly.
(a)
Set the switch for the fueling shutoff valve for the No. 1 tank to OPEN.
(b)
Make sure the indication light for the fueling shutoff valve for the No. 1 tank comes on.
(c)
Set the switch for the fueling shutoff valve for the No. 1 tank to CLOSE.
(d)
Make sure the indication light for the fueling shutoff valve for the No. 1 tank goes off.
(e)
Set the switch for the fueling shutoff valve for the No. 2 tank to OPEN.
(f)
Make sure the indication light for the fueling shutoff valve for the No. 2 tank comes on.
(g)
Set the switch for the fueling shutoff valve for the No. 2 tank to CLOSE.
(h)
Make sure the indication light for the fueling shutoff valve for the No. 2 tank goes off.
(i)
Set the switch for the fueling shutoff valve for the center tank to OPEN.
(j)
Make sure the indication light for the fueling shutoff valve for the center tank comes on.
(k)
Set the switch for the fueling shutoff valve for the center tank to CLOSE.
(l)
Make sure the indication light for the fueling shutoff valve for the center tank goes off.
S 715-017
(12) Make sure the floodlights go off when the refuel station door is closed.
(a) Put a thin strip of steel between the magnet and the proximity switch on the refuel station door.
NOTE: This condition is equivalent to a closed door.
____
(b) Make sure these floodlights go out:
1) The two floodlights for the refuel nozzle.
2) The floodlight for the refuel panel.
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28-21-00
ALL ú ú 01 Page 503 ú Mar 15/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(c)
Set the test switch for the refuel quantity to
FUELING POWER - CONTROL.
(d)
Make sure the lights for the refuel station come on.
(e)
Set the test switch to OFF again.
(f)
Remove the metal strip that you used on the proximity switch.
(g)
Make sure the distance between the magnet and the proximity switch is 0.08 | 0.02 inches.
S 495-022
WARNING: MAKE SURE THERE IS ELECTRICAL CONTINUITY BETWEEN THE FUEL
_______ SOURCE AND THE AIRPLANE. AN EXPLOSION CAN OCCUR.
(13) Attach the bonding cable on the nozzle of the fuel hose to the ground jack on the wing.
NOTE: The bonding cable is not necessary if there is electrical
____
continuity between the nozzle and the receptacle.
S 495-019
(14) Attach the nozzle on the fuel hose to the fueling receptacle.
(a)
Open the valve in the nozzle on the fuel hose.
(b)
Make sure the nozzle and the fueling receptacle have a good seal.
S 865-020
(15) Make sure all of the fueling shutoff valves are closed.
S 795-021
WARNING: MAKE SURE THE FUEL SOURCE DOES NOT HAVE MORE THAN A MAXIMUM
_______ PRESSURE OF 55 PSI. YOU CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(16) Do a leak check of the pressure fueling system during the refuel operation.
(a)
Make sure all of the fueling shutoff valves are closed.
(b)
Start the pump on the fuel truck or the fuel source.
(c)
Monitor the fuel source to make sure the pressure is not more than 55 psi.
(d)
Make sure there is no leakage at these locations: 1) The seal between the fuel nozzle and the fueling receptacle 2) The fueling receptacle 3) The fittings on the manifold 4) The fueling shutoff valves.
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