S 865-091
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747-400 MAINTENANCE MANUAL
(b) P415 Power Distribution Center - Right 1) 415B38 FUEL OVRD/JTSN PUMP AFT 3
(7) S 865-094Set the main no. 3 OVRD AFT pump switch on module M154 to the ON position.
(8) S 715-095See that the test equipment POWER PHASE ON indicator lights for phases A, B, and C come on.
(9) S 865-096Set the LOAD switch on the test equipment to the LOAD position.
S 715-097
(10)
See that the test equipment POWER PHASE ON indicator lights for phases A, B, and C go off.
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(11)
Set the main no. 3 OVRD AFT pump switch on the module, M154, to the OFF position.
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(12)
Set the LOAD switch on the test equipment to the OFF position.
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(13)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P180 DC Power Distribution Panel 1) 180E18 FUEL OVRD/JTSN PUMP CONT AFT 2&3
(b)
P415 Power Distribution Center - Right 1) 415B38 FUEL OVRD/JTSN PUMP AFT 3
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(14)
Remove the connector, DM226, from the test equipment.
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(15)
Connect DM226 to pump M226.
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747-400 MAINTENANCE MANUAL
L. Put the Airplane Back to Its Usual Condition
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(1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
P180, DC Power Distribution Panel
1) 180EZ FUEL OVRD/JTSN PMP CONT CTR L
2) 180H18 FUEL OVRD/JTSN PMP CONT CTR R
3) 180E3 FUEL OVRD/JTSN PUMP CONT FWD 2&3
4) 180E18 FUEL OVRD/JTSN PUMP CONT AFT 2&3
(b)
P414 Power Distribution Center - Left
1) 414C2 FUEL OVRD/JTSN PUMP FWD 2
2) 414D2 FUEL OVRD/JTSN PUMP CTR LEFT
3) 414C5 FUEL OVRD/JTSN PUMP FWD 3
(c)
P415 Power Distribution Center - Right
1) 415A38 FUEL OVRD/JTSN PUMP AFT 2
2) 415M32 FUEL OVRD/JTSN PUMP CTR RIGHT
3) 415B38 FUEL OVRD/JTSN PUMP AFT 3
S 865-105
WARNING:_______DO THE PROCEDURE IN AMM 32-00-30/201 TO REMOVE THE LOCKS. THE DOORS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT IF YOU ARE NOT CAREFUL.
(2)
If it is not necessary, remove the landing gear door locks
(AMM 32-00-30/201).
S 865-106
(3)
Cancel these EICAS status messages that were generated by this test:
(a)
FUEL OVRD 2 AFT
(b)
FUEL OVRD 2 FWD
(c)
FUEL OVRD 3 AFT
(d)
FUEL OVRD 3 FWD
(e)
FUEL OVRD CTR L
(f)
FUEL OVRD CTR R
(4)
Remove electrical power if it is not necessary.
S 865-107
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747-400 MAINTENANCE MANUAL
FUEL JETTISON CONTROL CARD - REMOVAL/INSTALLATION
_________________________________________________
1. General
_______
A. This procedure contains instructions to remove and install the fuel jettison control cards A7 (FJCC A) and A8 (FJCC B), found in the fuel system card file. Access to the card file is through the left crawlway forward of the main equipment center.
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