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TERMINAL BOX - EGT (TT4.95) THERMOCOUPLE CABLE, ENG 2  2  1  427 AND 428, CORE COWL PANELS, TURBINE EXHAUST CASE  77-21-04 
TERMINAL BOX - EGT (TT4.95) THERMOCOUPLE CABLE, ENG 3  2  1  437 AND 438, CORE COWL PANELS, TURBINE EXHAUST CASE  77-21-04 
TERMINAL BOX - EGT (TT4.95) THERMOCOUPLE UNIT - (REF 31-61-00, FIG. 101) CABLE, ENG 4 R EFIS/EICAS INTERFACE, M7351 L EFIS/EICAS INTERFACE, M7353 C EFIS/EICAS INTERFACE, M7352  2  1  447 AND 448, CORE COWL PANELS, TURBINE EXHAUST CASE  77-21-04 

Engine Indicating - Component Index
Figure 101 (Sheet 2)

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////////////////////////
A / PW4000 SERIES /
747-400 / ENGINES /FAULT ISOLATION/MAINT MANUAL ////////////////////////
ELECTRICAL SYSTEMS CARD FILE, M7603
SEE C
E1/E2 RACK P6 PANEL
SEE A
FLIGHT COMPARTMENT MAIN EQUIPMENT CENTER
E2-1 AVM SIGNAL CONDITIONER, M7846
SEE B
AVM SIGNAL CONDITIONER, M118
SEE B
E1-1
FWD
E1/E2 RACK 
ENGINE SPEED CARDS  A  AVM SIGNAL CONDITIONER B 
SEE  D 

ENGINE 1
ENGINE 3 SPEED CARD,
SPEED CARD, YMLA001
YMLA005 ENGINE 2
ENGINE 4 SPEED CARD,
SPEED CARD, YMLA003
YMLA007
ELECTRICAL SYSTEMS CARD FILE M7603
ENGINE SPEED CARDS C NOTE: EEC/TMC CARDS NOT
SHOWN FOR CLARITY.  D
Engine Indicating - Component Location Figure 102 (Sheet 1)
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A / PW4000 SERIES /
747-400 / ENGINES /FAULT ISOLATION/MAINT MANUAL ////////////////////////
RIGHT CORE COWL PANEL LEFT CORE COWL PANEL
418 (ENGINE 1) 417 (ENGINE 1)
428 (ENGINE 2) 427 (ENGINE 2)
438 (ENGINE 3) 437 (ENGINE 3)
448 (ENGINE 4) 447 (ENGINE 4)
SEE  E  SEE  F 
FLANGE  FLANGE 
FLANGE  P  P  FLANGE 
S  S 
FLANGE  FLANGE 
T  T 
TURBINE 
EXHAUST 
CASE (REF) 
RIGHT EGT (TT4.95)  TURBINE 
THERMOCOUPLE  EXHAUST 
CABLE HALF  CASE (REF) 
SEE  I  SHT 3  EGT (TT4.95) 
THERMOCOUPLE 
PROBE 
(4 LOCATIONS) 
SEE  G  H  SHT 3 
LEFT EGT (TT4.95) 
EPR (PT4.95)  THERMOCOUPLE 
MANIFOLD  CABLE HALF 
SEE  I  SHT 3 
EPR (PT4.95) 
PROBE 
(2 LOCATIONS) 
SEE  H  SHT 3  EGT (TT4.95) THERMOCOUPLE 
CABLE TERMINAL 
BOX 
PRESSURE EPR (PT4.95)  SEE  I  SHT 3  EGT (TT4.95) 
MANIFOLD  THERMOCOUPLE 
THERMOCOUPLE EGT (TT4.95)  HOUSING (2 LOCATIONS) 
FWD  CABLE TERMINAL  FWD  SEE  G  SHT 3 
BOX 
E  SEE  I  SHT 3  F 
Engine Indicating - Component Location 
Figure 102 (Sheet 2) 

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////////////////////////
A / PW4000 SERIES /
747-400 / ENGINES /FAULT ISOLATION/MAINT MANUAL ////////////////////////
EGT (TT4.95) EGT (TT4.95) THERMOCOUPLE THERMOCOUPLE PROBE PROBE
EEC HARNESS (REF)
EGT (TT4.95) THERMOCOUPLE HOUSING
EPR (PT4.95) PRESSURE MANIFOLD (REF)
EPR (PT4.95) PROBE
G
H
COVER
FLANGE P
BRACKET
(REF)

EGT (TT4.95) THERMOCOUPLE RIGHT EGT (TT4.95)
　
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