Adjustment/Test 501 ALL General 501 System Test 501
 SWITCH - FUEL FILTER 73-34-01 DIFFERENTIAL PRESSURE Removal/Installation 401 ALL
 73-CONTENTS
 NGUN Page 4 Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
ENGINE FUEL AND CONTROL - DESCRIPTION AND OPERATION
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 1.  General (Fig. 1)
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 A.  The engine fuel and control system supplies thrust management and decreases the temperature of the the engine oil and IDG oil. It also is an interface with the airplane to give condition data to the central maintenance computer system (CMCS) and the engine indicating and crew alert system (EICAS). Engine fuel and control includes the fuel distribution system (AMM 73-11-00), control system (AMM 73-21-00), and indicating system (AMM 73-31-00).
 B.  The fuel distribution system pressurizes the fuel and sends fuel to decrease the temperature of the engine oil and IDG oil, and supplies fuel to the fuel injectors.
 C.  The fuel control system uses a dual channel, full authority, digital electronic engine control (EEC). The EEC controls fuel flow metering, compressor stator vane and bleed valve position, and turbine case cooling. The EEC also controls the temperature of the engine oil and IDG oil.
 D.  The EEC receives pressure, temperature, and throttle position data from the airplane. Temperature, pressure, and rotor speed data from the engine is also recieved by the EEC. The EEC gets this data and supplies control commands to the engine components and supplies digital data to EICAS/CMCS.
 E.  The fuel indicating system supplies fuel flow, temperature, and pressure data, and filter bypass warning to the flight compartment.
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 ALL  ú ú N01 Page 1 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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A / PW4000 SERIES /
747-400 / ENGINES/FAULT ISOLATION/MAINT MANUAL ////////////////////////
ENGINE FUEL AND CONTROL
COMPONENT  FIG. 102 SHT  QTY ACCESS/AREA  REFERENCE 
ALTERNATOR - EEC (N2 TRANSDUCER) ENG 1, T1519  6  1  MAIN GEARBOX, AFT FACE415,416, THRUST REVERSER HALVES  73-21-05 
ALTERNATOR - EEC (N2 TRANSDUCER) ENG 2, T1519  6  1  MAIN GEARBOX, AFT FACE 425,426, THRUST REVERSER HALVES  73-21-05 
ALTERNATOR - EEC (N2 TRANSDUCER) ENG 3, T1519  6  1 435,436, THRUST REVERSER HALVES MAIN GEARBOX, AFT FACE  73-21-05
ALTERNATOR - EEC (N2 TRANSDUCER) ENG 4, T1519  6  1  MAIN GEARBOX, AFT FACE445,446, THRUST REVERSER HALVES 73-21-05
ASSY - EEC PANEL, M7330 CARD - (REF 77-00-00, FIG. 101)N2 ENGINE SPEED, ENG 1, YMLA001 N2 ENGINE SPEED, ENG 2, YMLA003 N2 ENGINE SPEED, ENG 3, YMLA005 N2 ENGINE SPEED, ENG 4, YMLA007  2  1 FLT COMPT, P5  * 
CARD - ENG 1 EEC/TMC DISCRETES, YMLA002  1  1  AND FUSELAGE, LH, M7603 115, AREA BETWEEN NOSE GEAR WELL 73-21-12 
CARD - ENG 2 EEC/TMC DISCRETES, YMLA004  1  1  AND FUSELAGE, LH, M7603 115, AREA BETWEEN NOSE GEAR WELL  73-21-12 
CARD - ENG 3 EEC/TMC DISCRETES, YMLA006  1  1  AND FUSELAGE, LH, M7603115, AREA BETWEEN NOSE GEAR WELL  73-21-12 
CIRCUIT BREAKERS - (REF 76-11-00, FIG. 101) CIRCUIT BREAKERS - (REF 28-22-00, FIG. 101) FUEL SHUTOFF VALVE ENG 1, C35 FUEL SHUTOFF VALVE ENG 2, C36 FUEL SHUTOFF VALVE ENG 4, C38 FUEL SHUTOFF VALVE ENG 3, C37 FUEL CONT VALVE ENG 1, C1040 FUEL CONT VALVE ENG 2, C1041 FUEL CONT VALVE ENG 3, C1042 FUEL CONT VALVE ENG 4, C1043CARD - ENG 4 EEC/TMC DISCRETES, YMLA008  1  1  AND FUSELAGE, LH, M7603 115, AREA BETWEEN NOSE GEAR WELL  73-21-12 
CIRCUIT BREAKERS  1 FLT COMPT, P6 
ENG 1 IDLE CONT/TMC DISCRETES, C10091  1  6F10  * 
ENG 2 IDLE CONT/TMC DISCRETES, C10092  1 6E10  * 
　
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