AFT DOOR SECTION INSTALLATION A Ram Air Inlet Door Installation Figure 401 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-62-02
 ALL  ú ú 01 Page 402 ú Apr 10/89
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

1. AFT DOOR SECTION
FORWARD DOOR SECTION INSTALLATION

Ram Air Inlet Door Installation
Figure 401 (Sheet 2)

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-62-02
 ALL  ú ú 01 Page 403 ú Oct 10/94
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 D. Remove the Forward Section of the Inlet Door
 S 034-033
 WARNING:  MAKE SURE THE DOOR IS SUPPORTED BEFORE REMOVING THE FORWARD SECTION OF THE DOOR. IF THE DOOR IS NOT SUPPORTED, THE DOOR MAY FALL OR QUICKLY SWING ABOUT THE AFT HINGE. THIS MAY CAUSE INJURY TO PERSONEL OR DAMAGE TO EQUIPMENT.
 (1)  
Remove the eight screws (2) from the hinge which is between the forward door section (3) and the aft door section (1).

 S 034-017

 (2)  
Remove the seven screws (4) from the forward hinge.

 S 024-018

 (3)
Pull the forward door section (3) out of the ram air inlet.

 E. Remove the Aft Section of the Inlet Door
 S 034-031
 (1)  
Remove the bolt (5), the washers (6 and 7) and the nut (8) which connect each actuator link (2 locations) to the aft door section (1).

 S 024-019

 (2)  
Pull the aft door section (1) out of the ram air inlet.

 TASK 21-62-02-404-003
 3. Ram Air Inlet Door Installation (Fig. 401)
_______________________________
 A. Consumable Materials
 (1)  G01043 Cloth, Lint-Free
 B. Parts
 ~.............................................................................. | MM | | IPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 |Aft Door Section | 21-62-02 | 01 | 85 | | | 2 |Bolt (Screw) | | | 105 | | | 3 |Forward Door Section | | | 5 | | | 4 |Bolt (Screw) | 21-62-14 | 01 | 65 | | | 5 |Bolt | 21-62-03 | 01 | 155 | | | 6 |Washer | | | 160 | | | 7 |Washer | | | 165 | | | 8 |Nut | | | 170 | 2......…........…...................................…..........….....….........1
 C. References
 (1)  21-51-00/501, Air Conditioning Pack System
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-62-02
 ALL  ú ú 01 Page 404 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  24-22-00/201, Manual Control
 D. Access
 (1)  Location Zone
 123 Wing to Body Fairing, Forward Lower Half, LH
 124 Wing to Body Fairing, Forward Lower Half, RH

 E. Prepare to Install the Inlet Door
 S 034-020
 (1) Remove the eight screws (2) to disassemble the forward door section
 (3) from the aft door section (1).
 S 164-021
 (2)  Clean all of the surfaces of the ram air inlet with a soft, lintfree cloth.
 F. Install the Aft Section of the Inlet Door
 S 424-022
 (1)  
Put the aft door section (1) into the ram air inlet and engage the door with the tracks.

 S 434-023

 (2)  
Install the bolt (5), the washers (6 and 7), and the nut (8) which connect each actuator link (2 locations) to the aft door section (1).

 NOTE: The countersink of the countersunk washer must be below and
____
 against the head of the bolt.

 G. Install the Forward Section of the Inlet Door
　
中國航空網 m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：747-400 AMM 飛機維護手冊 空調 AIR CONDITIONING 2(169)