(2)
A task to install the fuel crossfeed valve actuator.
TASK 28-22-02-004-001
2. Fuel Crossfeed Valve Actuator Removal (Fig. 401)_____________________________________
A. References
(1)
AMM 27-81-00/201, Leading Edge Flap System
(2)
AIPC 28-22-02 Fig. 1
(3)
SSM 28-22-02
(4)
WDM 28-22-21, WDM 28-22-22, WDM 28-22-23, WDM 28-22-24
B.
Access
(1)
Location Zone
521 Leading Edge to Front Spar, Left
621 Leading Edge to Front Spar, Right
C.
Procedure
S 864-002
(1)
Open the applicable circuit breaker and install a DO-NOT-CLOSE tag:
(a)
P6 Main Power Distribution Panel
1) 6L14, FUEL XFEED VALVE ENG 1
2) 6L15, FUEL XFEED VALVE ENG 2
3) 6L16, FUEL XFEED VALVE ENG 3
4) 6L17, FUEL XFEED VALVE ENG 4
S 864-025
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LEADING
_______ EDGE AND TRAILING EDGE FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER.
(2) Extend the leading edge flaps (AMM 27-81-00/201).
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28-22-02
ALL ú ú 03 Page 401 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
S 494-004
WARNING: DO THE PROCEDURE IN AMM 27-81-00/201 TO DEACTIVATE AND INSTALL
_______ LOCKS ON THE LEADING EDGE FLAPS. THE LEADING EDGE FLAPS MOVE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
(3)
Do this task: Extended Leading Edge Flaps Deactivation and Safety Locks Installation (AMM 27-81-00/201).
S 034-005
(4)
Disconnect the electrical connector (2) from the actuator (1).
NOTE: Refer to the table that follows for the equipment numbers:
____
~................................................................. | | Equipment Number | | Location ............................ | | Valve | Connector | ................................................................... | No. 1 Fuel Crossfeed Valve | V45 | DV45 | | No. 2 Fuel Crossfeed Valve | V46 | DV46 | | No. 3 Fuel Crossfeed Valve | V47 | DV47 | | No. 4 Fuel Crossfeed Valve | V48 | DV48 | 2......................................…...........…..............1
S 864-006
(5)
Make sure the manual override lever is in the closed position.
S 034-007
(6)
Remove the screw (8), washers (6), and nut (5) which attach the bonding jumper (7) to the actuator (1).
S 034-008
(7)
Remove the screws (3) and washers (4) which attach the actuator (1) to the index plate.
(8)
Remove the actuator (1).
S 024-009
NOTE: Pull the actuator out in a straight direction to disengage
____
the actuator shaft from the adapter plate.
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28-22-02
ALL ú ú 01 Page 402 ú Oct 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
CROSSFEED VALVE ACTUATOR
SEE A
3. SCREW (4 LOCATIONS)
4. WASHER (4 LOCATIONS)
2. ELECTRICAL SURFACE 1 CONNECTOR FAYING MANUAL OVERRIDE LEVER
1. ACTUATOR
INDEX PLATE 8. SCREW
6. WASHER
6. WASHER
5. NUT
7. BONDING
FRONT FAYING JUMPER
SPAR SURFACE 2
FWD
ADAPTER
CROSSFEED
PLATE
VALVE ACTUATOR A
PREPARE THE FAYING SURFACE OF THE INDEX PLATE AND VALVE
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本文链接地址：747-400 AMM 飞机维护手册 燃油 FUEL 2(109)
