747-400
FAULT ISOLATION/MAINT MANUAL
SWITCH LEADS
(REF) REFUEL CONTROL
PANEL DOOR
(SHOWN CLOSED)
MAGNETIC
ACTUATOR FUELING POWER
(REF) CONTROL SWITCH, S681
MANUAL DEFUEL
RECEPTACLE REFUEL VALVE HANDLE DEFUEL (REF) REFUEL
LINE RECEPTACLE
FWD
FUELING POWER CONTROL SWITCH
B
FWD
OUTBD
REFUEL
MANUAL SHUTOFF CROSSOVER
VALVE HANDLE MANIFOLD
(REF)
LEFT OR RIGHT REFUEL RECEPTACLES
C
CHECK VALVE
ON THE REFUEL MID SPAR
DISTRIBUTION (REF)
MANIFOLD
FWD
REFUEL/
JETTISON
MANIFOLD
FUEL TUBE FOR
THE REFUEL
DISTRIBUTION
MANIFOLD MANIFOLD
DRAIN VALVE (REF)
CHECK VALVE FOR THE REFUEL
LEFT OR RIGHT MANIFOLD DRAIN VALVE DISTRIBUTION MANIFOLD
D D1
Pressure Fueling System - Component Location (Details from Sht 1)
Figure 102 (Sheet 2)
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747-400
FAULT ISOLATION/MAINT MANUAL
REFUEL INBD
FWD
VALVE
UNIT
REFUEL VALVE
CONTROL UNIT (REF)
REFUEL VALVE ELECTRICAL CONTROL UNIT
CONNECTOR (REF) REFUEL VALVE UNIT
OVERRIDE
SCREW (REF)
REFUEL/
MAIN TANK REFUEL VALVE
JETTISON
(DRY SIDE) MANIFOLD
E
FRONT SPAR INBD
REFUEL FWDDISTRIBUTION
MANIFOLD (REF)
ELECTRICAL
CONNECTOR
(REF) FLOAT SWITCH
MAIN TANK REFUEL VALVE (WET SIDE)
E
INBD
FWD
SURGE TANK FLOAT SWITCH
F
Pressure Fueling System - Component Location (Details from Sht 1)
Figure 102 (Sheet 3)
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FAULT ISOLATION/MAINT MANUAL
JETTISON TRANSFER VALVE
____NOTE: RIGHT SIDE SHOWN,
LEFT SIDE EQUIVALENT.
CENTER WING TANK COMPONENTS
(DRY SIDE)
Pressure Fueling System - Component Location (Detail from Sht 1)
Figure 102 (Sheet 4)
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FAULT ISOLATION/MAINT MANUAL
REFUEL VALVE
OVERFILL REFUEL VALVE
PRESSURE OVERFILL POSITION
RESET CONTROL SWITCH
FUELING INDICATOR INDICATOR
SWITCH, (EXAMPLE)
TEST SWITCH
SWITCH REFUEL
POWER
SELECT
SWITCH
FUELING QUANTITY INDICATOR (EXAMPLE)
ALL VALVES
THUMBWHEEL
PRESELECT CONTROL SWITCH, S1874
REFUEL CONTROL PANEL, P42
Pressure Fueling System - Component Location (Detail from Sht 1)
Figure 102 (Sheet 5)
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747-400 MAINTENANCE MANUAL
REFUEL SYSTEM - MAINTENANCE PRACTICES
_____________________________________
1. General_______
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