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MAINTENANCE MANUAL
(av) Put the CENTER fueling valve switch to the OFF position. (aw) Set the fuel quantity of the meter on the fueling source to ZERO.
S 725-086
(3) Overfill Shutoff Test
CAUTION: PUT CONTAINERS AT THE VENT SCOOP IN EACH SURGE TANK TO
_______ CATCH FUEL IF THE OVERFILL SYSTEM DOES NOT OPERATE CORRECTLY. FUEL LEAKAGE COULD CAUSE DAMAGE TO EQUIPMENT.
MAKE SURE THE PRESSURE OF THE FUELING NOZZLE IS NOT MORE THAN 10 |2 PSIG. IF THE PRESSURE OF THE FUELING NOZZLES IS MORE THAN 10 |2 PSIG, DAMAGE TO EQUIPMENT COULD OCCUR.
(a)
Install the test cable.
(b)
Put the switches on the test box to the FUEL position.
NOTE: The test cable lets the fueling valves remain open at
____ fuel quantities more than the auto full shutoff quantity.
(c)
Set the fuel quantity of the meter on the fueling source to ZERO.
(d)
Put the RIGHT MAIN fueling valve switch to the FUEL position.
(e)
Make sure fuel flows into the right main fuel tank.
(f)
Continue fueling until fuel fills the expansion space in the right main fuel tank, fills the fuel vent system and causes the fuel level sensor in the surge tank to stop fueling.
(g)
Make sure the fuel level sensor closes the fueling shutoff valve before the fuel spill.
(h)
Drain the fuel from the right surge tank (AMM 12-11-03/301).
(i)
Make sure less than 50 gallons of fuel are drained from the right surge tank.
NOTE: If you drain more than 50 gallons of fuel it shows there
____ is either a blockage in the fuel level sensor line or the flappers of the sump drain valves do not close correctly.
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28-21-00
ALL ú ú 01 Page 518 ú Mar 20/90
A
757
MAINTENANCE MANUAL
(j) Put the RIGHT MAIN fueling valve switch to the OFF position.
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