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747-400 MAINTENANCE MANUAL
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747-400
MAINTENANCE MANUAL
FUEL MANAGEMENT CONTROL MODULE, M154 - REMOVAL/INSTALLATION
___________________________________________________________
1. General
_______
A. This procedure contains these two tasks.
(1)
Fuel Management Control Module Removal
(2)
Fuel Management Control Module Installation
TASK 28-22-17-004-026
2. Fuel Management Control Module Removal (Fig. 401)
______________________________________
A. Access
(1)
Location Zones
221 Control Cabin Left Side
222 Control Cabin Right Side
B.
Prepare for the Removal
S 864-002
(1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
On the main power distribution panel, P6: 1) 6F20, FLT DK LIGHTS PILOTS MISC IND 2 2) 6F26, FLT DK LIGHTS F/O IND 3) 6F27, FLT DK LIGHTS F/O IND & DGTL DSPL 4) 6L14, FUEL XFEED VALVE ENG 1 5) 6L15, FUEL XFEED VALVE ENG 2 6) 6L16, FUEL XFEED VALVE ENG 3 7) 6L17, FUEL XFEED VALVE ENG 4
(b)
On the DC power distribution panel, P180: 1) 180E2, OVRD/JTSN PUMP CONT L 2) 180E3, FUEL OVRD/JTSN PUMP CONT FWD 2 & 3 3) 180E4, PUMP CONT BST 1 AFT 4 FWD 4) 180E18, FUEL OVRD/JTSN PUMP CONT AFT 2 & 3 5) 180E19, PUMP CONT BOOST 1 FWD 4 AFT 6) 180H4, PUMP CONT BST 2 AFT 3 FWD 7) 180H18, OVRD/JTSN PUMP CONT R 8) 180H19, PUMP CONT BOOST 2 FWD 3 AFT
(c)
On the left power distribution center, P414: 1) 414E24, MN-AFT PUMP CONT BOOST 2
C.
Remove the Fuel Management Control Module, M154
S 014-025
(1)
Loosen the quarter-turn-fasteners (4 locations) on the fuel management control module, M154.
(2)
Move the module until you can get to the electrical connectors.
S 014-024
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747-400 MAINTENANCE MANUAL
S 024-014
(3) Support the module and remove these electrical connectors:
NOTE: Attach identification tags to all electrical connectors.
____
(a)
DM154A
(b)
DM154B
(c)
DM154C
(d)
DM154D
(e)
DM154E
(f)
DM154F
S 024-010
(4) Remove the fuel management control module, M154.
TASK 28-22-17-404-013
3. Fuel Management Control Module Installation (Fig. 401)___________________________________________
A. References
(1)
AMM 28-22-00/501, Engine Fuel-Feed System
(2)
AIPC 28-22-51-01
B.
Access
(1)
Location Zones
221 Control Cabin Left Side
222 Control Cabin Right Side
C.
Procedure
S 824-012
(1)
Support the fuel management control module, M154 and connect these electrical connectors.
(a)
DM154A
(b)
DM154B
(c)
DM154C
(d)
DM154D
(e)
DM154E
(f)
DM154F
S 424-015
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