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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
NUT FUEL LINE
UNION
SHROUD FUEL
FUEL SHROUDFITTING LINE
SAFETY CLIP
LOCK CLIP O-RING
SHROUD O-RING
FWD
FWD FUEL LINE
O-RING INBD
INBD D
O-RING
NUT SEE H
SHROUD FUEL UNION
FITTING SEE H SHROUD
FWD
O-RING
INBD SAFETY CLIP ANTI-ABRASION
LOCK FUEL SHIELD
CLIP LINE
F
FUEL FITTING
FUEL LINE
SHROUD
SCREW FUEL
JAMNUT LINE
FWD
UNION NUT
H
APU Fuel Feed Line Installation Figure 401 (Sheet 3)
ANTI-ABRASION
SHIELD
FUEL LINE
UNION
SHROUD FUEL FITTING
SAFETY CLIP
LOCK CLIP
O-RING
E
BELLOWS
FUEL LINE UNION
O-RING NUT (COUPLING) FWD INBD
G
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(2)
Access Panels
146AZ Sta. 2160 Bulkhead Access Door
312A Horizontal Stabilizer Jackscrew Access Door
315A APU Battery Access Door
D.
Prepare for the Removal
S 864-021
(1) Make sure the ground lock pins for the landing gear are installed.
S 494-022
WARNING:_______DO THE PROCEDURE IN AMM 32-00-30/201 TO THE LOCKS. THE DOORS MOVE QUICKLY AND COULD CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT IF THE LOCKS ARE NOT CORRECTLY INSTALLED.
(2)
Install wing and body gear door locks (AMM 32-00-30/201).
S 864-023
(3)
Make sure the APU START switch is in the OFF position.
S 864-024
(4)
Open these circuit breakers and attach DO-NOT-CLOSE tags:
(a)
P6 Main Power Distribution Panel
1) 6H18, DC FUEL PUMP APU
2) 6G5, FUEL SHUTOFF VALVE APU
(b)
P83 Panel
1) APU START
(c)
P414 Main Power Distribution Panel
1) 414R18, MAIN TANK BOOST PUMP 2 AFT
E.
Remove the Fuel Line Between the Center Wing Tank Rear Spar and Body Station 1265.0
S 014-025
(1)
Lift the dust cover up over the shroud assembly at the rear spar fitting in the wheel well for the right wing gear.
S 034-026
(2)
Remove the V-band coupling that holds the shroud fitting for the fuel hose.
(3)
Discard the gasket.
S 034-027
(4)
Put a container in a position to catch the remaining fuel from the hose.
(5)
Move the shroud fitting to get access to the fuel hose.
S 034-066
S 034-067
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
S 034-084
(6)
Disconnect the fuel hose.
S 034-068
(7)
Discard the O-rings.
S 014-028
(8)
Remove the cabin floor at body station 1265.0, right buttock line 8.5 (AMM 53-21-02/401).
S 034-029
(9)
Disconnect the shroud fuel fitting to get access to the fuel hose union.
S 034-069
(10)
Disconnect the fuel hose union.
S 024-070
(11)
Connect the new fuel hose, or a length of cord, to the fuel hose you removed.
NOTE: This will make the installation of the new hose in the shroud
____
easier.
S 024-030
(12)
Remove the forward fuel hose from the wheel well.
F.
Remove the Fuel Line Between Body Station 1265.0 and Body Station 1648.0
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