28-22-14
ALL ú ú 14 Page 406 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(5)
WDM 28-16-11, WDM 28-16-12, WDM 28-22-13, WDM 28-22-23, WDM 28-31-11
B.
Access
(1)
Location Zone 115 Area Between Nose Gear Well and Fuselage, Left
C.
Procedure
S 864-016
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
On the main power distribution panel, P6: 1) 6E17, CTR R & MAIN 2 JTSN VLV 2) 6G3, FUEL SHUTOFF VALVE ENG 3 3) 6L16, FUEL XFEED VALVE ENG 3
(b)
On the overhead circuit breaker panel, P7: 1) 7H22, FUEL XFER VALVE RES 2A & 3A 2) 7H24, FUEL XFR VLV MAIN 4
(c)
On the DC power distribution panel, P180: 1) 180B2 or 180M9, FUELING LTS - HOT
or FUELING PWR - HOT BAT 2) 180C25, FUELING LTS PANEL 3) 180C26, FUELING LTS RECP
(d)
On the left power distribution center, P414: 1) 414F22, FUELING PWR
S 914-039
WARNING: DO NOT TOUCH THE CARD BEFORE YOU DO THE PROCEDURE FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE CARD.
(2)
Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
S 024-030
(3)
Remove the card A11 from the fuel system card file
(AMM 20-11-22/401).
TASK 28-22-14-404-018
7. Valve Position Logic Card A11 Installation (Fig. 401)
__________________________________________
A. References
(1)
AMM 20-11-22/401, E/E Rack-Mounted Module
(2)
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices
(3)
AIPC 28-15-60 Fig. 1
(4)
SSM 28-16-01, SSM 28-16-02, SSM 28-21-07 Sht. 2, SSM 28-22-01, SSM 28-22-02, SSM 28-31-01
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-22-14
ALL ú ú 15 Page 407 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(5)
WDM 28-16-11, WDM 28-16-12, WDM 28-22-13, WDM 28-22-23, WDM 28-31-11
B.
Access
(1)
Location Zone 115 Area Between Nose Gear Well and Fuselage, Left
C.
Procedure
S 914-042
WARNING: DO NOT TOUCH THE CARD BEFORE YOU DO THE PROCEDURE FOR DEVICES
_______ THAT ARE SENSITIVE TO ELECTROSTATIC DISCHARGE. ELECTROSTATIC DISCHARGE CAN CAUSE DAMAGE TO THE CARD.
(1)
Do the procedure for devices that are sensitive to electrostatic discharge (AMM 20-41-02/201).
S 424-031
(2)
Install the card in the fuel system card file at location All (AMM 20-11-22/401).
S 864-020
(3)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a)
On the main power distribution panel, P6: 1) 6E17, CTR R & MAIN 2 JTSN VLV 2) 6G3, FUEL SHUTOFF VALVE ENG 3 3) 6L16, FUEL XFEED VALVE ENG 3
(b)
On the overhead circuit breaker panel, P7: 1) 7H22, FUEL XFER VALVE RES 2A & 3A 2) 7H24, FUEL XFR VLV MAIN 4
(c)
On the DC power distribution panel, P180: 1) 180B2 or 180M9, FUELING LTS - HOT
or FUELING PWR - HOT BAT 2) 180C25, FUELING LTS PANEL 3) 180C26, FUELING LTS RECP
(d)
On the left power distribution center, P414: 1) 414F22, FUELING PWR
S 724-046
(4) Do this Task: Valve Position Logic Card A11 Operational Test (AMM 28-22-14/501).
TASK 28-22-14-004-021
8. Valve Position Logic Card A12 Removal (Fig. 401)
_____________________________________
A. References
(1)
AMM 20-11-22/401, E/E Rack-Mounted Module
(2)
AMM 20-41-02/201, Electrostatic Discharge Sensitive Devices
(3)
AIPC 28-15-60 Fig. 1
(4)
SSM 28-16-02, SSM 28-21-07 Sht. 2, SSM 28-22-01, SSM 28-22-02, SSM 28-25-03, SSM 28-31-01, SSM 28-31-03
(5)
WDM 28-16-13, WDM 28-22-12, WDM 28-22-24, WDM 28-25-31, WDM 28-31-11 WDM 28-31-13
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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