* SEE THE WDM EQUIPMENT LIST
Engine Fuel Feed System - Component Index
Figure 101 (Sheet 5)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
28-22-00
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E00521
A
747-400
FAULT ISOLATION/MAINT MANUAL
FORWARD AND AFT NO. 1 OR NO. 4 MAIN TANK
FUEL BOOST PUMPS, M28 AND M22 OR M27 AND CENTER WING TANK
M32, AND FORWARD AND AFT NO. 1 OR NO. 4 OVERRIDE/JETTISON
MAIN TANK WATER SCAVENGE EJECTOR PUMPS FUEL FLOW PUMP (REF) SEE B SHT 2
LIMITING
CENTER WING
VALVE
INBOARD MAIN TANK
TANK OVERRIDE/ SEE I SHT 5 BOOST PUMP
OVERRIDE/JETTISON
JETTISON PUMP BYPASS VALVE
PUMPS (REF)
(REF) NO. 1 OR NO. 4
SEE H SHT 5 ENGINE FUEL SHUTOFF VALVE, V13 OR V16
SEE A
BOOST PUMP
BYPASS VALVE
SEE H SHT 5
FORWARD NO. 2 OR NO. 3 MAIN TANK FUEL BOOST PUMP, M29 OR M26, AND
NOTE:LEFT WING FORWARD NO. 2 OR NO. 3
SHOWN, RIGHT MAIN TANK WATER
WING OPPOSITE. SCAVENGE EJECTOR PUMP
NO. 1 OR NO. 4 FUEL SEE E SHT 3
CROSSFEED VALVE,NO. 2 OR NO. 3 FUEL V45 OR V48CROSSFEED VALVE,AFT NO. 2 OR NO. 3 MAIN TANK
V46 OR V47 SEE A
FUEL BOOST PUMP, M23 OR M31,
AND AFT NO. 2 OR NO. 3 MAIN SEE A
TANK WATER SCAVENGE EJECTOR PUMP NO. 2 OR NO. 3 ENGINE FUEL
SHUTOFF VALVE, V14 OR V15
SEE D SHT 3
SEE A
ADAPTER PLATE
ADAPTER SHAFT
VALVE BODY FOR ELECTRICAL
THE ENGINE FUEL CONNECTOR
SHUTOFF VALVE
FUEL TUBING
MOTOR
ADAPTER FWDSHAFT ACTUATOR
VALVE BODY FOR THE FUEL DRY SIDE OF THE WET SIDE OF THE CROSSFEED
FWD
FRONT SPAR (REF) FRONT SPAR (REF) VALVE
ENGINE FUEL SHUTOFF VALVE ENGINE FUEL SHUTOFF VALVE
AND FUEL CROSSFEED VALVE AND FUEL CROSSFEED VALVE
(EXAMPLE) (EXAMPLE)
(INBOARD INSTALLATION SHOWN) (INBOARD INSTALLATION SHOWN)
A A
Engine Fuel Feed System - Component Location
Figure 102 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
FAULT ISOLATION/MAINT MANUAL
BOOST PUMP
WATER SCAVENGE
PICKUP
EJECTOR PUMP
SEE G SHT 4
WATER SCAVENGE
EJECTOR
PUMP PICKUP
NO. 1 OR NO. 4 NO. 2 OR NO. 3
MAIN TANK MAIN TANK
FWD
INBD
BOOST PUMP PICKUP FORWARD AND AFT NO. 1 OR NO. 4 MAIN TANK FUEL BOOST PUMPS
SEE C
WATER SCAVENGE
WATER SCAVENGE
EJECTOR PUMP
EJECTOR PUMP PRESSURE
PICKUP
SWITCHESSEE G SHT 4 (REF)
FORWARD AND AFT NO. 1 OR NO. 4 MAIN TANK FUEL BOOST PUMPS AND
FORWARD AND AFT NO. 1 OR NO. 4 MAIN TANK WATER SCAVENGE EJECTOR PUMPS
B FROM SHT 1 TO EJECTOR PUMPCHECK VALVE
TO VAPOR DISCHARGE OUTLET
INLET
TO PRESSURE SWITCH
OUTLET
REMOVAL
WING CHECK
LOWER VALVEFUEL BOOST SKIN
PUMP
(REF)
HOUSING
FUEL BOOST PUMP INBD FWD
MOTOR/IMPELLER UNIT
FORWARD AND AFT NO. 1 OR NO. 4 MAIN TANK FUEL BOOST PUMPS
C
Engine Fuel Feed System - Component Location
Figure 102 (Sheet 2)
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