C.
Preconditions
S 865-120
(1)
These conditions are necessary for this task:
(a)
Reserve Tank Transfer System serviceable.
(b)
Fuel Feed System serviceable.
(c)
Fuel Jettison System serviceable.
(d)
A specific fuel quantity is not necessary for this task.
(e)
Electrical Power On (AMM 24-22-00/201).
(f)
Fuel System Card File serviceable (AMM 28-22-16/401).
(g)
Integrated Display System (IDS) serviceable (AMM 31-61-00/501).
(h)
Airplane must be in the ground mode (AMM 32-09-02/201).
(i)
CDU installed (AMM 34-61-02/401).
(j)
Central Maintenance Computer (CMC) serviceable (AMM 45-10-00/201).
D.
Procedure
S 865-008
(1)
Supply electrical power (Ref 24-22-00/201).
S 865-043
(2)
Open this circuit breaker:
(a)
On the main power distribution panel P6:
1) 6F17, CTR L & MAIN 3 JTSN VLV
S 865-053
(3)
Make sure this circuit breaker is closed:
(a)
On the P6 panel:
1) 6E17, CTR R & MAIN 2 JTSN VLV
S 725-046
(4)
Make sure the EICAS status message, JETT XFER VLV, shows on the bottom EICAS display.
S 865-047
(5)
Close this circuit breaker:
(a)
On the P6 panel:
1) 6F17, CTR L & MAIN 3 JTSN VLV
S 725-039
(6)
Make sure the EICAS message, JETT XFER VALVE, does not show on the bottom EICAS display.
S 865-071
(7)
Open this circuit breaker:
(a)
On the P6 panel:
1) 6G2, FUEL SHUTOFF VALVE ENG 2
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A
747-400 MAINTENANCE MANUAL
S 725-048
(8)
Make sure the EICAS advisory message "ENG 2 FUEL VLV" shows on the top EICAS display.
S 725-053
(9)
Make sure the EICAS status message "FUEL SPAR VLV 2" shows on the bottom EICAS display.
S 865-049
(10)
Close this circuit breaker:
(a)
On the P6 panel:
1) 6G2, FUEL SHUTOFF VALVE ENG 2
S 725-050
(11)
Make sure that the EICAS advisory message "ENG 2 FUEL VLV" does not show on the top EICAS display.
S 725-054
(12)
Make sure the EICAS status message "FUEL SPAR VLV 2" does not show on the bottom EICAS display.
S 865-051
(13)
Open this circuit breaker:
(a)
On the P6 panel:
1) 6L15, FUEL XFEED VALVE ENG 2
S 725-064
(14)
Make sure the EICAS message "FUEL XFEED 2" shows on the top EICAS display.
S 865-059
(15)
Close this circuit breaker:
(a)
On the P6 panel:
1) 6L15, FUEL XFEED VALVE ENG 2
S 725-061
(16)
Make sure the EICAS message "FUEL XFEED 2" does not show on the top EICAS display.
S 865-055
(17)
Open this circuit breaker:
(a)
On the overhead circuit breaker panel P7:
1) 7H21, FUEL XFR VALVE MAIN 1
S 865-056
(18)
Make sure this circuit breaker is closed:
(a)
On the P7 panel:
1) 7H24, FUEL XFR VALVE MAIN 4
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