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28-25-05
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A
757 MAINTENANCE MANUAL
D. Remove the APU Fuel Line in the Fuel Tanks
S 654-091
(1)
Defuel the applicable fuel tank (AMM 28-26-00/201).
S 834-180
(2)
Make sure the APU fuel shutoff valve is closed.
S 834-181
(3)
Make sure the APU master control switch on the overhead panel, P5 is in the OFF position and attach a DO-NOT OPERATE tag.
S 834-182
(4)
Remove the electrical power from the airplane.
S 834-183
(5)
Open these circuit breakers and attach DO-NOT CLOSE tags:
(a)
On the main power distribution panel, P6:
1) 6E3, APU FUEL VALVE
2) 6H23, L FWD FUEL BOOST PUMP
(b)
On the overhead circuit breaker panel, P11:
1) 11C33, APU DC PUMP.
S 654-092
(6)
Drain and purge the applicable fuel tank (AMM 28-11-00/201).
S 014-014
(7)
To remove the APU fuel line in the center fuel tank, open the applicable center tank access door, 134AZ, 531AB, 531BB, or 531CB (AMM 28-11-02/401).
S 014-015
(8)
To remove the APU fuel line in the left main fuel tank, open the left main tank access door, 541AB (AMM 28-11-01/401).
S 944-093
WARNING: OBEY THE FUEL TANK ENTRY PRECAUTIONS (AMM 28-11-00/201).
_______ FAILURE TO OBEY THE FUEL TANK ENTRY PRECAUTIONS COULD CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(9)
Obey the fuel tank entry precautions (AMM 28-11-00/201).
(10)
Go into the fuel tank.
S 034-095
(11)
Remove the applicable fittings from the APU fuel line per the Remove the Fittings on the Fuel Line procedure.
S 014-094
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-25-05
ALL ú ú 01 Page 414 ú Sep 28/01
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本文链接地址：757 AMM 飞机维护手册 燃油 CHAPTER 28 - FUEL 4(41)
