GOVERNOR
DISCONNECT
SOLENIOD
TRIM COIL
T
CONTROL INLET OIL
FUEL/OILFIXED
AIR EXHAUST ADD SUBTRACTCYLINDER TEMP SENSOR
COOLER 250 PSI
OUTPUT TO GCU
SLIPPER WOBBLER
VACUUM
SUMP
VARIABLE
EXTERNAL OIL
CHARGE 250
WOBBLER CIRCUIT BYPASS
VENTDE-AERATOR
PRESS.
PSID
VALVE
VALVE
RELIEFVALVE TWIN HYDRAULIC LOGS
AIR/OIL HEATEXCHANGER
CHARGEPUMP
OUTPUT OILSUMP
TEMP SENSOROUTPUT TO GCU
1
INPUT
DISCONNECT
OIL OUT GEAR
SUMMING 2
SCAVENGEFILTER
60 PSID
SUMMING
3
DELTA PRESSURE
GEAR
INPUT INDICATOR
DIFFERENTIAL
SPEED
INPUT
SENSOR
SHEAR
SECTION
OUTPUT INPUTTRIM
IDG PRESSUREMAIN GEARBOX FILL PORT
CHARGE
PRESSURE
MONITOR
PMG OUTPUT TO GCUBOSS
SPEED SENSOR OUTPUTTO GCU
350 PSI
SCAVENGE
MAIN EXCITER INPUT FROMPRESS.
GCU RELIEF
SCAVENGE
PUMPS
VALVE
MAINEXCITER ALL-
DIFFERENTIAL PROTECTIONATTITUDE
CURRENT TRANSFORMER
1 OIL FOR LUBRICATIONOIL HOLDING OUTPUT TO GCU
AND CONTROL TANK
MAIN
GEN
2 OIL FOR LUBRICATIONNEUTRAL
3 OIL FOR LUBRICATIONAND COOLING
3
4 PHASE C
4
OIL FOR COOLING PHASE B
INLET PRESSURE MAIN GENERATOR
PERMANENT CURRENT
OUTPUT TO GCBGENERATOR
MAGNET TRANSFORMERS
SUPPLY PRESSURE
PHASE A
CHARGE PRESSURE
OVER FLOW
DRAIN
OIL LEVEL
CONTROL PRESSURE
SIGHT GAUGE TERMINAL
SCAVENGE PRESSURE
BLOCK INTEGRATED DRIVE GENERATOR
Generator Drive System Block Diagram
Figure 2 (Sheet 2)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-00
ALL ú ú 03 Page 9 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
H86455
A
747-400
MAINTENANCE MANUAL
INPUT DRIVE
DISCONNECT DRIVE DISCONNECTRESETHANDLE
TRIM COIL
CHARGE PRESS. SWP
OUTPUT TO GCU
140 PSI OIL IN
CHARGE PRESS.
SWITCH
INPUT
GOVERNOR
DISCONNECT
SOLENIOD
TRIM COIL
T
CONTROL INLET OIL
FUEL/OIL FIXED
AIR EXHAUST
ADD SUBTRACT
CYLINDER TEMP SENSOR
COOLER 250 PSIOUTPUT TO GCU
SLIPPER WOBBLER VARIABLE
SUMP EXTERNAL OIL
CHARGE 250
WOBBLER CIRCUIT BYPASS
DE-AERATOR
PRESS.
PSID
VALVE
RELIEFVALVE TWIN HYDRAULIC LOGS
AIR/OIL HEATEXCHANGER
CHARGEPUMP
OUTPUT OILSUMP
TEMP SENSOROUTPUT TO GCU
1
OIL OUT
INPUT
DISCONNECT
SUMMING
2
GEAR
SCAVENGEFILTER 60 PSID
DELTA PRESSURESUMMING
INDICATOR
INPUT
GEAR
SPEED
DIFFERENTIAL
INPUT
3
SENSOR
SHEAR
SECTION
IDG PRESSUREOUTPUTINPUT
FILL PORT MAIN GEARBOX
TRIM
CHARGE
PRESSURE
PMG OUTPUT TO GCUMONITOR
BOSS SPEED SENSOR OUTPUTTO GCU
350 PSI
SCAVENGE
MAIN EXCITER INPUT FROMPRESS.
GCU RELIEF SCAVENGE
PUMPS
VALVE
MAINEXCITER ALL-
DIFFERENTIAL PROTECTIONATTITUDE
CURRENT TRANSFORMER
1 OIL FOR LUBRICATIONOIL HOLDING OUTPUT TO GCU
AND CONTROL TANK
MAIN
GEN
2 OIL FOR LUBRICATIONNEUTRAL
3 OIL FOR LUBRICATIONAND COOLING
3
4 PHASE C
4 OIL FOR COOLING PHASE B
INLET PRESSURE MAIN GENERATOR
PERMANENT CURRENT
OUTPUT TO GCBGENERATORMAGNET TRANSFORMERS
SUPPLY PRESSURE PHASE A
CHARGE PRESSURE OVER FLOW
DRAIN
CONTROL PRESSURE
OIL LEVEL
SIGHT GAUGE
TERMINAL
SCAVENGE PRESSURE
BLOCK INTEGRATED DRIVE GENERATOR
Generator Drive System Block Diagram
Figure 2 (Sheet 3)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
24-11-00
ALL ú ú 02 Page 10 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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