(5) S 434-059Wind the antiabrasion shield around the applicable fuel hose connections.
(6) S 434-082Attach the anti-abrasion shield with straps.
(7) S 434-060Install the fuel hose shroud sleeve-type fittings. (a) Connect to the fuel hose fitting at the rear spar with a V-band coupling. (b) Connect the fittings at other locations and install lock clips. (c) Attach the shroud fitting to the aft side of the aft pressure bulkhead with the G28020-2 wrench. (d) Install safety clips in the lock clips.
(8) S 414-061Install the dust cover over the gap in the fuel line shroud at the rear spar of the center wing tank.
(9) S 784-062Do a pressure check of the APU fuel line shroud (AMM 28-25-04/201).
S 414-063
(10)
Install all of the cargo compartment ceiling linings which you removed (AMM 25-52-01/401).
S 414-064
(11)
Install all of the cabin floor panels which you removed (AMM 53-21-02/401).
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28-25-04
ALL ú ú 04 Page 414 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
APU FUEL BOOST PUMP CONTROL PRESSURE SWITCH - REMOVAL/INSTALLATION
__________________________________________________________________
TASK 28-25-06-964-001
1. APU Fuel Boost Pump Control Pressure Switch Removal/Installation________________________________________________________________
A. General
(1) The removal/installation procedure for the APU fuel boost pump control pressure switch is almost the same as the procedure for the APU fuel boost pump pressure switch. Refer to AMM 28-42-01/401 for the removal/installation procedure.
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28-25-06
ALL ú ú 01 Page 401 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
APU FUEL LINE SHROUD DRAIN VALVE PRIMARY POPPET -
_________________________________________________ REMOVAL/INSTALLATION
____________________
1. General_______
A. This procedure has two tasks:
(1)
A task to remove the primary poppet of the drain valve for the APU fuel line shroud.
(2)
A task to install the primary poppet of the drain valve for the APU fuel line shroud.
B.
The procedure for the removal or the installation of the secondary poppet is in AMM 28-25-08/401.
TASK 28-25-07-004-001
2. APU Fuel Line Shroud Drain Valve Primary Poppet Removal (Fig. 401)_______________________________________________________
A. Equipment
(1)
4MIT65B00772 - Seat Adapter, Fuel Sump Drain Valve
B.
References
(1)
AIPC 28-25-04, Fig. 5
C.
Access
(1)
Location Zone
149 Keel Beam (Part)
D.
Procedure
S 034-002
(1) Use the seat adapter to turn and loosen the valve seat.
NOTE: Turn the valve seat counterclockwise to loosen it.
____
S 024-003
(2)
Remove the valve seat with the poppet.
(3)
Discard the packings.
S 034-009
TASK 28-25-07-404-004
3. APU Fuel Line Shroud Drain Valve Primary Poppet Installation (Fig. 401)____________________________________________________________
A. Equipment
(1)
4MIT65B00772 - Seat Adapter, Fuel Sump Drain Valve (Preferred)
(2)
3MIT60B92013 - Seat Adapter, Fuel Sump Drain Valve (Alternate)
B.
Consumable Materials
(1)
G00000 Compound - Antiseize, TT-A-580
(2)
B00148 Solvent - Methyl Ethyl Ketone (MEK), TT-M-261
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