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时间:2011-04-11 09:17来源:蓝天飞行翻译 作者:航空
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544AB (MAIN TANK 2)
644AB (MAIN TANK 3)
646AB (MAIN TANK 4)

HEAT EXCHANGER INLET AND OUTLET FITTINGS (REF)
REAR SPAR (REF)
HEAT EXCHANGER
LOWER WING SKIN STRINGERS BONDING(REF)
JUMPER
(REF)

OUTBD
FWD
COOLING COMPONENTS

O
Main Hydraulic Supply System - Component Location Figure 102 (Sheet 11)
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A

747-400
FAULT ISOLATION/MAINT MANUAL

SYS 1,2,3 OR 4 
HYDIM CIRCUIT 
CARDS, YMLA20, 
YMLA21, YMLA22, OR 
ELECTRICAL  YMLA23 
SYSTEM CARD 
FILE, M7603 
SEE  P 

ELECTRICAL SYSTEMS CARD FILE, M7603
P

Main Hydraulic Supply System - Component Location
Figure 102 (Sheet 12)

FWD
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A
747-400
FAULT ISOLATION/MAINT MANUAL

PRESSURIZATION
COMPONENTS 
TO RESERVOIR  SEE  Q  AND  R  PRESSURE RELIEF VALVE  TRAILING EDGE FAIRING DOORS 
SEE  S  454A (STRUT 1) 
464A (STRUT 2) 
FWD  474A (STRUT 3) 484A (STRUT 4) 

FROM RESERVOIR
PRESSURIZATION SYS (1,2,3,4) MODULE RESERVOIR LOW PRESSURE WARNING SWITCH, S1576, S1577, S1578, S1579 BONDING
JUMPER (REF) RESERVOIR PRESSURIZATION MODULE
PRESSURIZATION COMPONENTS
Q
CHECK VALVE RESERVOIR
(REF) VENT TUBE (REF) RESERVOIR PRESSURE RELIEF VALVE
FWD
IN PORT (IN) GAGECHECK VALVE PORT (GA)
(REF) TEST PORT (T) WITH FILTER BLEED PORT (REF) (BLD)
PRESSURIZATION COMPONENTS
RESERVOIR VENT PORT
R
PRESSURE RELIEF VALVE
S
Main Hydraulic Supply System - Component Location Figure 102 (Sheet 13)
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747-400
FAULT ISOLATION/MAINT MANUAL

755L BODY LANDING GEAR WHEEL WELL
SEE T
HYDRAULIC FILL COMPONENTS
GROUND SERVICE RESERVOIR QUANTITY FILL INDICATOR
HAND PUMP  (REF) CAP FILL PRESSURE 
HOSE FILL 
SELECTOR VALVE GROUND SERVICE 
FWD  HYDRAULIC FILL COMPONENTS PORT 1PORT 3 

Figure 102 (Sheet 14) Main Hydraulic Supply System - Component Location 

K65633
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A
747-400 FAULT ISOLATION/MAINT MANUAL
TRAILING EDGE FAIRING DOORS 464A (STRUT 2) 474A (STRUT 3) 
USEE ACMP  SYS 2 OR 3 AC MOTOR-DRIVEN PUMP (ACMP), M7894 OR M7895  CONNECTOR (REF) ELECTRICAL 

SUPPLY HOSE (REF)
SELF-SEALING FITTING (REF)
CASE DRAIN HOSE
(REF)

PRESSURE HOSE
ACMP
(REF) FWD
U
Main Hydraulic Supply System - Component Location Figure 102 (Sheet 15)
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