(12)
 Make sure the inlet door is in the center of the hole. S 434-037

 (13)
 Install the bolt, washers, and nut (2 locations) which connect the two actuator links to the torque shaft.

 NOTE: The countersink of the countersunk washer must be against the
____ head of the bolt.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-62-11
 ALL  ú ú 01 Page 405 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 S 434-039
 CAUTION:_______DO NOT CHANGE THE LENGTH OF THE ACTUATOR. THE LENGTH OF THE ACTUATOR IS ADJUSTED AT THE FACTORY TO 11.00 (|0.01) INCHES IN THE FULLY EXTENDED POSITION.
 (14) Connect the actuator to the bellcrank with the bolt, washers, and nut (Ref 21-62-03/401).
 NOTE: The countersink of the countersunk washer must be against the
____
 head of the bolt.

 S 414-038
 (15) Install the forward section of the inlet door (Ref 21-62-02/401).
 D. Do a Test of the Operation of the Inlet Door and Linkages
 S 864-043
 (1)  
Supply electrical power (Ref 24-22-00/201).

 S 864-040

 (2)  
Remove the DO-NOT-OPERATE tag from the PACKS switch on the P5 overhead panel.

 S 864-009

 (3)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6 Main Power Distribution Panel
 1) 6F35, PACK TEMP CONT A
 2) 6F36, PACK TEMP CONT B

 (b)  
P415 Power Distribution Center - Right
 1) 415C38, PACK TEMP CONT B
 2) 415K27, PACK TEMP CONT A

 S 714-041
 (4)  
Do the ground test for the pack temperature controllers, A and B, while you monitor the operation of the inlet door and the linkages (Ref 21-51-00/501).

 S 714-042

 (5)  
Make sure the inlet door and the linkages move smoothly and freely, and without the sound of clicks during the operation.

 E. Put the Airplane Back to Its Usual Condition
 S 864-007
 (1)  Remove the electrical power if it is not necessary
 (Ref 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-62-11
 ALL  ú ú 01 Page 406 ú Jun 10/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 414-008
 (2) Close the access panel for the applicable pack (Ref 06-09-02/201):
 (a)
191V-L for the pack 1

 (b)
191Z-L for the pack 2

 (c)
192V-R for the pack 3.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-62-11
 ALL  ú ú 01 Page 407 ú Feb 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 RAM AIR EXIT DOOR LIMIT SWITCH - REMOVAL/INSTALLATION
_____________________________________________________
 1.  General_______
 A.  This procedure has two tasks. The first task is the removal of the limit switch for the ram air exit door. The second task is the installation of the limit switch for the ram air exit door.
 B.  The removal of the limit switch has these steps:
 -Remove the power from the pack temperature control system
 -Get access to the limit switch
 -Remove the limit switch.
 C.  The installation of the limit switch has these steps:
 -Install the limit switch
 -Adjust the limit switch
 -Supply power to pack temperature control system.
 TASK 21-62-12-004-001
 2.  Ram Air Exit Door Limit Switch Removal (Fig. 401)______________________________________
 A.  References
 (1)
06-09-03/201, Body Section 44 Access Doors and Panels

 (2)
　
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(184)