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DRAIN FOR THE AIR/OIL HEAT THERMAL RELIEF
EXCHANGER VALVE AND 2.5 VENT FOR THE IDG
BLEED VALVE ACTUATOR
OIL SEAL DRAIN FOR STRUT DRAIN
THE STARTER DRIVE
DRAIN FOR THE FUEL
OIL SEAL DRAIN FOR
PUMP DRIVE OIL SEAL
THE EEC ALTERNATOR
DRAIN FOR THE FUEL/OIL COOLER, BYPASSDRIVE
VALVE OF THE FUEL/OIL COOLER, AND THE OIL SEAL DRAIN FOR FUEL/OIL HEAT EXCHANGER OF THE IDG THE HYDRAULIC PUMP DRIVE
FLUID COLLECTOR
OVERBOARD DRAIN
Engine Vents and Drains
Figure 601 (Sheet 2)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
Engine Vents and Drain - Schematics
Figure 602
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C78876C78877
COWL FAN LEFT 425AL (RIGHT ENGINE OUTBOARD) THRUST REVERSER, 415AL (LEFT ENGINE INBOARD),
COWL CORE
RIGHT THRUST REVERSER
ANGLE DRAIN OIL TANK
GEARBOX COLLECTOR SEE C
SEE B SEE A
FLUID TRAP FOR THE
DRAIN LINE OF THE
GENERATOR DRIVE OIL
SEAL OF THE ELECTRONIC
ENGINE CONTROL
FLUID TRAP FOR THE
DRAIN LINE OF THE
STARTER DRIVE OIL SEAL
DRAIN
COLLECTOR FWD
DRAIN COLLECTOR
A
Fluid Trap Location
Figure 603 (Sheet 1)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
FLUID TRAP FOR THE DRAIN LINE
OF THE AIR/OIL HEAT EXCHANGER
VALVE
ANGLE
GEARBOX FUEL/OIL
(REF) COOLER (REF)
FLUID TRAP FOR THE
DRAIN LINE OF THE MAIN
2.5 BLEED VALVE GEARBOX
ACTUATOR (REF)
ANGLE GEARBOX
FLUID TRAP
B FOR THE
DRAIN LINE OF
THE FUEL/OIL
COOLER VALVE
SEE D
OIL TANK
C
FLUID TRAP FOR THE DRAIN LINE OF THE BYPASS VALVE FOR THE FUEL/OIL COOLER AND THE FUEL/OIL HEAT EXCHANGER OF THE IDG
D
Fluid Trap Location
Figure 603 (Sheet 2)
C78879
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FLUID TRAP FOR THE DRAIN
LINE OF THE AIR SHUTOFF
STATOR VANE VALVE FOR THE TCC
ACTUATOR
SEE E
STATOR VANE ACTUATOR (REF)
FLUID TRAP FOR THE DRAIN
LINE OF THE AIR/OIL HEAT
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