UPPER DRAIN HOLE

TUBE
B
Conditioned Air Condensate Drainage, Section 44
Figure 604 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-41-02
 ALL  ú ú 02 Page 608 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

BODY TORQUE TUBE LOWER SUPPORT DRAIN (MAIN ENTRY DOOR)
DOOR SHOWN (EXAMPLE). LOCATION AND NUMBER OF HOLES ARE DIFFERENT FOR EACH DOOR.

Internal Drainage - Miscellaneous Figure 605

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-41-02
 ALL  ú ú 01 Page 609 ú Oct 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
AMM 25-27-01/401, Main Deck Floor Covering - Removal/Installation

 (3)  
AMM 53-21-02/401, Main and Upper Deck Floor - Removal/Installation

 B. Procedure
 S 216-007
 (1)  To examine all the floor beam drain holes and drain tubes are clear and clean.
 (a)  
Remove the passenger seats.

 (b)  
Remove the floor covering panels to get access to the drain tubes.

 (c)  
Clean the tubes and holes if they are necessary (View A-A).

 TASK 51-41-02-106-014
 4. Clean the Drains
________________
 A. Consumable Materials
 (1)  
G01043 Cloth - Lint Free

 (2)  
A00003 Mild Cleaner - GMC 528B

 B. Procedure
 S 116-009
 (1)  Use the cloth that is moist with water-cleaner solution, remove all the soil and unwanted materials.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-41-02
 ALL  ú ú 01 Page 610 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 FUSELAGE DRAIN VALVE - REMOVAL/INSTALLATION
___________________________________________
 1.  General________
 A.  This procedure contains two tasks. The first task is the removal procedure for the fuselage drain valve. The second task is the installation of the fuselage drain valve.
 B.  You can get access to the fuselage drain valve from the outer surface of the fuselage.
 TASK 51-41-03-004-005
 2.  Remove Drain Valve (Fig. 401)__________________
 A.  Special Tools and Equipment
 (1)  2024 Installation Tool (Stewart Industries Inc., 5210 14th Avenue Northwest, Seattle, WA 98107-3795)
 B.  Remove Drain Valve
 S 024-001
 CAUTION:_______DO NOT USE THE A STEEL WRENCH. A STEEL WRENCH CAN CAUSE DAMAGE TO THE DRAIN VALVE.
 (1)  
Turn the drain valve assembly out of the valve retainer with the installation tool.

 S 024-002

 (2)  
Remove the valve assembly from the retainer.

 TASK 51-41-03-404-006
 3.  Install Drain Valve (Fig. 401)___________________
 A.  Special Tools and Equipment
 (1)  2024 Installation Tool (Stewart Industries Inc., 5210 14th Avenue Northwest, Seattle, WA 98107-3795)
 B.  Consumable Materials
 (1)  B00003 Cleaner - GMC 528B
 C.  Prepare for Installation
 S 114-003
 (1)  Clean the drain valve in a water cleaner solution.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-41-03
 ALL  ú ú 01 Page 401 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 D. Install Drain Valve
 S 424-004
　
中國航空網 www.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 結構 STRUCTURES(91)