(2)
The deactivation of all the airplane and engine systems in the strut
(3)
Open the cover of the wing leading edge and all the access panels interface
(4)
Remove the hydraulic pump and drive
(5)
Disconnect all the tubes and wires at the strut to the wing interface
(6)
Install the unload sling
(7)
Remove the load from the diagonal brace assembly
(8)
Remove the unload sling
(9)
Install the overhead sling (referred to as sling)
(10)
Remove all the attach pins/bolts and links
(11)
Remove the strut from the wing with the aid of the sling
(12)
Do a check on all the attached hardware for corrosion
(13)
Install the strut on the wing with the aid of the sling
(14)
Install all the attached pins/bolts and links
(15)
Remove the sling
(16)
Install the hydraulic pump and drive
(17)
Connect all the tubes and wires at the strut to the wing interface and seal again if it is necessary
(18)
Close the cover of the wing leading edge and all the strut access panels
(19)
Do a test on all the airplane and engine systems in the strut
(20)
Install the thrust reversers and the engine
B. The strut structure is attached to the wing by these attach:
(1)
The upper link
(2)
The side brace
(3)
The spring beam (mid spar fittings) which is installed on the closure spar
(4)
The diagonal brace which is installed aft of the torque bulkhead
C. Access to the area above the closure spar is through the cover of the wing leading edge. Access to the area aft of the torque bulkhead is through the trailing edge (TE) fairing doors.
D. If it is necessary, remove the sealant when you disconnect the engine systems equipment and the strut attach pins/bolts.
E. During the strut removal, seal all the tube ends, ducts and electrical connectors with a cap as soon as possible after you disconnected them. During the strut installation, do not remove the caps until the connections are to be made. Use the external caps only.
TASK 54-51-01-004-001
2. Remove the Nacelle Strut________________________
A. Special Tools and Equipment
(1) G54004 - Overhead Mechanical Equipment, Inboard and Outboard Nacelle Strut Installation
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
54-51-01
ALL ú ú 02 Page 401 ú Oct 10/93
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
(2)
G54007 - Overhead Mechanical Equipment, Diagonal Brace Unload Sling
(3)
3MIT65B90100 - Wrench Set, Strut Installation, Upper Link Aft Attach Bolt
B. Standard Tools and Equipment
(1)
Crane, capable of lifting 3000 pounds
(2)
Mat - protective, for wing upper surface
C. References
(1)
AMM 24-22-00/201, Manual Control
(2)
AMM 27-81-00/201, Leading Edge Flaps
(3)
AMM 28-00-00/201, Fuel System
(4)
AMM 29-11-00/201, Main Hydraulic Supply System
(5)
AMM 29-11-08/401, Air-Driven Pump Turbine Drive
(6)
AMM 29-11-17/401, Air-Driven Pump
(7)
AMM 29-11-19/401, AC Motor-Driven Pump
(8)
AMM 36-11-01/401, Pneumatic Duct
(9)
AMM 54-51-02/401, Nacelle Strut Attach Pin/Bolt
(10)
AMM 54-62-00/201, Nacelle Strut Access Panels (Opening/Closing)
(11)
AMM 71-00-02/401, Power Plant
(12)
AMM 78-31-01/401, Thrust Reverser System
(13) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 NACELLES/PYLONS(5)
