* SEE THE WDM EQUIPMENT LIST
APU Fuel-Feed System - Component Index
Figure 101 (Sheet 1)
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28-25-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
COMPONENT FIG. 102 SHT QTY ACCESS/AREA REFERENCE
SHROUD - APU FUEL SUPPLY LINE SWITCH - (REF 26-15-00, FIG. 101) APU FIRE, S246 3 146AZ,312A,315A, RIGHT WING LANDING GEAR WELL, RIGHT AFT MENT, RIGHT AREA AFT OF STABILIZER TORSION BOX COMPART-PRESSURE BULKHEAD, RIGHT COMPARTMENT, RIGHT AREA AFT OF RIGHT AREA AFT OF BULK CARGO CARGO CONTAINER COMPARTMENT, STABILIZER BOX COMPARTMENT 28-25-04
SWITCH - PRESSURE, APU DC BOOST PUMP, S435 1 1 SUPPORT BEAM LEFT REAR SPAR TO LANDING GEAR *
SWITCH - PRESSURE, APU FUEL BOOST PUMP CONTROL, S548 UNIT - (REF 31-61-00, FIG. 101) C EFIS/EICAS INTERFACE, M7352 L EFIS/EICAS INTERFACE, M7353 R EFIS/EICAS INTERFACE, M7351 1 1 LEFT REAR SPAR TO LANDING GEAR SUPPORT BEAM 28-25-06
VALVE - APU FUEL SHUTOFF, V119 1 1 544AB, LEFT MID SPAR TO REAR SPAR INBD MAIN TANK 28-25-10
VALVE - DRAIN, APU FUEL LINE SHROUD 2 1 RIGHT BODY LANDING GEAR WELL 28-25-00
* SEE THE WDM EQUIPMENT LIST
APU Fuel-Feed System - Component Index
Figure 101 (Sheet 2)
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ú 01 Page 102
ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 FAULT ISOLATION/MAINT MANUAL
APU FIREWALL
FITTING
APU SHROUD SEE E SHT 3
DRAIN LINE
CENTER WING VALVE
TANK FITTING SEE C SHT 2 APU FUEL-
SEE B SHT 2 FEED LINE
SEE D SHT 3
APU FUEL BOOST PUMP, M713 AND
APU FUEL SHUTOFF VALVE, V119
SEE A
APU FUEL SHUTOFF
APU BOOST VALVE, V119
PUMP INLET
AND SCREEN
(REF)
APU FUEL SHUTOFF
VALVE ACTUATOR, V119
APU DC BOOST PUMP
PRESSURE SWITCH, S435
APU FUEL BOOST
WING REAR SPAR PUMP, M713(REF)
SEE F SHT 4 APU FUEL BOOST PUMP CONTROL PRESSURE SWITCH, S548
APU FUEL BOOST PUMP, M713 AND APU FUEL SHUTOFF VALVE, V119
A
APU 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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
MANIFOLD
MANIFOLD FLEXIBLE
SHROUD HOSE
FWD INBD AIR SEAL
BULKHEAD
SHROUD
(REF)
PRESSURE BULKHEAD (REF)
DUST COVER
FROM THE APU (REF)
FUEL SHUTOFF VALVE MANIFOLD SHROUD
FLEXIBLE HOSE (REF) REAR SPAR
SHROUD(REF)
DRAIN HOLE ADAPTER (REF) FITTING (REF) APU FUEL SUPPLY LINE SHROUD DRAIN
CENTER WING TANK FITTING
APU FUEL
B FROM SHT 1 SUPPLY LINE
SHROUD DRAINAPU FUEL SHROUD DRAIN FLAME ARRESTER
APU FUEL LINE SHROUD DRAIN VALVE PRIMARY POPPET
FWD INBD
APU FUEL LINE
A
SHROUD DRAIN
VALVE
A
APU SHROUD DRAIN LINE VALVE C FROM SHT 1A-A
APU Fuel-Feed System - Component Location Figure 102 (Sheet 2)
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