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R47 
MAIN FUEL TANK 2 BOOST PUMP CONTROL FWD,
 R49 
MAIN FUEL TANK 3 BOOST PUMP CONTROL FWD,
 R52 
MAIN FUEL TANK 4 BOOST PUMP CONTROL FWD,
 R54 
RELAY - (FIM 31-01-39/101) 
CROSSFEED VALVE AUTO CONTROL 3, R7404 
GROUND SAFETY, R637 
MAIN FUEL TANK 1 BOOST PUMP CONTROL FWD, 
R48 
MAIN FUEL TANK 2 BOOST PUMP CONTROL FWD,
 R50
MAIN FUEL TANK 3 BOOST PUMP CONTROL AFT, 
R51
MAIN FUEL TANK 4 BOOST PUMP CONTROL AFT, 
R53
SUPPRESSOR - (FIM 31-01-36/101) 
M2143
M2144 
M2145 
M2146 
SWITCH - AFT NO. 1 MAIN TANK BOOST PUMP, S5  6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 CONTROL MODULE, M154 
SWITCH - AFT NO. 2 MAIN TANK BOOST PUMP, S6  6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 CONTROL MODULE, M154 
SWITCH - AFT NO. 3 MAIN TANK BOOST PUMP, S7  6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 CONTROL MODULE, M154 
SWITCH - AFT NO. 4 MAIN TANK BOOST PUMP, S8  6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 CONTROL MODULE, M154 
SWITCH - FORWARD NO. 1 MAIN TANK BOOST PUMP,  6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 S1  CONTROL MODULE, M154 
SWITCH - FORWARD NO. 2 MAIN TANK BOOST PUMP, 6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 S2  CONTROL MODULE, M154 
SWITCH - FORWARD NO. 3 MAIN TANK BOOST PUMP, 6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 S3  CONTROL MODULE, M154 
SWITCH - FORWARD NO. 4 MAIN TANK BOOST PUMP, 6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 S4  CONTROL MODULE, M154 
SWITCH - L CENTER WING TANK OVERRIDE/JETTISON  6  1  FLT COMPT, P5, FUEL MANAGEMENT  *
 PUMP, S18  CONTROL MODULE, M154 
SWITCH - NO. 1 FUEL CONTROL, S211 6 1  FLT COMPT, CONTROL STAND  * 
SWITCH - NO. 1 FUEL CROSSFEED VALVE, S9  6  1  FLT COMPT, P5, FUEL MANAGEMENT  * 
CONTROL MODULE, M154 
SWITCH - NO. 2 FUEL CONTROL, S212  6  1  FLT COMPT, CONTROL STAND  * 
SWITCH - NO. 2 FUEL CROSSFEED VALVE, S10  6  1  FLT COMPT, P5, FUEL MANAGEMENT * 
CONTROL MODULE, M154 

* SEE THE WDM EQUIPMENT LIST
Engine Fuel Feed System - Component Index
Figure 101 (Sheet 4)

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 28-22-00
 ALL  ú ú 03 Page 104 ú Feb 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
E00517
A
747-400 FAULT ISOLATION/MAINT MANUAL
COMPONENT  FIG. 102 SHT QTY  ACCESS/AREA  REFERENCE AMM 
SWITCH - NO. 3 FUEL CONTROL, S213 6  1  FLT COMPT, CONTROL STAND  * 
SWITCH - NO. 3 FUEL CROSSFEED VALVE, S11  6  1  FLT COMPT, P5, FUEL MANAGEMENT  * 
CONTROL MODULE, M154 
SWITCH - NO. 4 FUEL CONTROL, S214  6 1  FLT COMPT, CONTROL STAND  * 
SWITCH - NO. 4 FUEL CROSSFEED VALVE, S12  6  1  FLT COMPT, P5, FUEL MANAGEMENT  * 
CONTROL MODULE, M154 
SWITCH - RIGHT CENTER WING TANK OVERRIDE/  6  1  FLT COMPT, P5, FUEL MANAGEMENT * 
JETTISON PUMP, S19  CONTROL MODULE, M154 
UNIT - (FIM 31-61-00/101) 
C EFIS/EICAS INDICATION, M7352 
L EFIS/EICAS INDICATION, M7353 
R EFIS/EICAS INDICATION, M7351 
UNIT - L FUEL CONTROL, M7881  -- 1  117AL, MAIN EQUIP CTR, E2-2  * 
UNIT - R FUEL CONTROL, M7879 -- 1  117AL, MAIN EQUIP CTR, E2-1  * 
UNIT - MOTOR/IMPELLER, AFT NO. 1 MAIN TANK 4  1  545DB, L MID SPAR TO REAR SPAR  28-22-03 
FUEL BOOST PUMP, M22  INBD MAIN TANK
UNIT - MOTOR/IMPELLER, AFT NO. 2 MAIN TANK 4  1  L MID SPAR TO REAR SPAR INBD MAIN  28-22-03 
FUEL BOOST PUMP, M23  TANK
UNIT - MOTOR/IMPELLER, AFT NO. 3 MAIN TANK  4  1  R MID SPAR TO REAR SPAR INBD MAIN  28-22-03 
FUEL BOOST PUMP, M31  TANK
UNIT - MOTOR/IMPELLER, AFT NO. 4 MAIN TANK 4  1  645DB, R MID SPAR TO REAR SPAR  28-22-03 
FUEL BOOST PUMP, M32  INBD MAIN TANK 
UNIT - MOTOR/IMPELLER, FORWARD NO. 1 MAIN 4  1  545CB, L MID SPAR TO REAR SPAR  28-22-03 
　
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