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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
O-RINGUNION
B
O-RING
RETAINER HALF COUPLING
(2 LOCATIONS) FUEL TUBE BODY RETAINING RING BULKHEAD
O-RING SPACER
O-RING
FUEL TUBE
BODY
RETAINING O-RING
RINGS SPACER NUT
O-RING
RETAININGO-RING
B
RING COUPLING
COUPLING FWD
NUT
NUT
SHROUDED BULKHEAD COUPLING 
(OUTBOARD STRUT) 
D 
COUPLING 
BODY 
BULKHEAD  RETAINER 
COUPLING  HALF 
NUT  NUT 
COUPLING  RINGS RETAINING  SPACER  SPACER  RETAINING RING 
NUT  O-RING 
FERRULE 

FUEL TUBE FUEL TUBE
O-RINGS
FERRULE BODY  O-RINGSO-RING
RETAINING RING
FWD
B-B
Fuel Line Coupling Maintenance - Nacelle Strut Figure 405 (Sheet 4)
L06223
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400 MAINTENANCE MANUAL
FRONT SPAR
COUPLING NUT
O-RING C SPACER
FRONT SPAR FITTING O-RING RETAINER HALF (2 LOCATIONS)
RETAINING  SPACER  O-RING 
RING 
FRONT SPAR  RETAINING 
INBD  FITTING  RING  UNION 
FUEL TUBE 
O-RING 

FWD  O-RING
COUPLING
C
BODY
SHROUDED SPAR COUPLING (OUTBOARD STRUT)
E
RETAINER HALF
COUPLING BODY COUPLING
SPACER
NUT SPACER
RETAINING
RING
RETAINING RING
FERRULE
FRONT SPAR  FUEL TUBE
O-RINGSO-RINGSFITTING FWD
C-C
Fuel Line Coupling Maintenance - Nacelle Strut Figure 405 (Sheet 5)
L06229
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

747-400
MAINTENANCE MANUAL

COUPLING NUT
D
RETAINING RINGS
BODY
O-RING BULKHEAD (REF) FUEL TUBE (REF)
O-RING GROVE
FUEL TUBE O-RING
(REF)
RETAINING
RINGS

NUT
D  O-RING
BULKHEAD COUPLING
COUPLING (INBOARD STRUT)
NUT

F
BULKHEAD (REF)
RETAINING NUTCOUPLING RING BODY
NUT (4 LOCATIONS)
(2 LOCATIONS) FERRULE
(REF)

FUEL TUBE FUEL TUBE (REF) (REF)
O-RING O-RING
(2 LOCATIONS)
D-D
Fuel Line Coupling Maintenance - Nacelle Strut Figure 405 (Sheet 6)
G83218
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

COUPLING NUT
SPAR COUPLING
(INBOARD)

G

Fuel Line Coupling Maintenance - Nacelle Strut
Figure 405 (Sheet 7)

G83219
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

BONDING
JUMPERS

(REF)
BONDING JUMPER (EXAMPLE)

BOLT
FUEL TUBE (REF)
BONDING JUMPER INSTALLATION
(EXAMPLE)

Fuel Line Coupling Maintenance - Nacelle Strut
Figure 405 (Sheet 8)

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