21-28-02
ALL ú ú 02F Page 408 ú Oct 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
CARGO TRIM AIR SHUTOFF VALVE - REMOVAL/INSTALLATION
___________________________________________________
1. General_______
A. There are two tasks in this procedure. There is one task for the removal and one task for the installation of the forward and aft cargo trim air shutoff valves. The procedure has these parts:
(1)
The removal of pressure from the pneumatic system
(2)
The removal of the valve
(3)
The installation of the valve
(4)
A functional test of the valve.
B. The aft cargo trim air shutoff valve is installed on the inboard bulkhead of the right body landing gear wheel well.
C. To get access to the forward cargo trim air shutoff valve you must lower an access panel on the air conditioning equipment bay.
TASK 21-28-04-004-001
2. Valve Removal (Fig. 401)_____________
A. References
(1)
06-09-03/201, Body Section 44 Access Doors and Panels
(2)
09-11-00/201, Towing
(3)
24-22-00/201, Manual Control
(4)
32-00-30/201, Landing Gear Door Locks
(5)
36-00-00/201, Pneumatic System
(6)
IPC 21-61-08 Fig. 01
(7)
IPC 21-44-54 Fig. 01
(8)
WDM 21-28-42
(9)
WDM 21-28-52
(10)
SSM 21-28-04
(11)
SSM 21-28-05
B. Access
(1)
Location Zone
134 Air Conditioning Equipment Bay, RH
138 Body Landing Gear Well, RH
(2)
Access Panel
192NR Air Conditioning Access Door
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21-28-04
ALL ú ú 04 Page 401 ú Feb 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
FORWARD CARGO
FORWARD CARGO AIR SUPPLY CONDITIONED AIR MODULATION VALVE (REF) FORWARD CARGO TRIM SEE B TRIM AIR SHUTOFF VALVE
SEE A
PACK 3 WATER
SEPERATOR (REF)
FORWARD CARGO CONDITIONED AIR SUPPLY
(IN RIGHT AIR CONDITIONING EQUIPMENT BAY)
A
ELECTRICAL
CONNECTOR
BONDING
JUMPER
CLAMPS
(2 LOCATIONS)
FORWARD CARGO TRIM AIR SHUTOFF VALVE B Cargo Trim Air Shutoff Valve Installation Figure 401 (Sheet 1)
E69399
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21-28-04
ALL ú ú 04 Page 402 ú Feb 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
RIGHT WHEEL WELL SEE C
AIR CONDITIONING BAY (REF) FWD AIR CONDITIONING EQUIPMENT BAY AND WHEEL WELL
ELECTRICAL CONNECTOR
BONDING JUMPER
CLAMPS (2 LOCATIONS)
AFT CARGO TRIM AIR MODULATION VALVE (REF)
INBOARD BULKHEAD
DSEE AFT CARGO TRIM AIR SHUTOFF VALVE
OUTBD FWD
C RIGHT WHEEL WELL
AFT CARGO TRIM AIR SHUTOFF VALVE D
Cargo Trim Air Shutoff Valve Installation Figure 401 (Sheet 2)
E69431
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21-28-04
ALL ú ú 03 Page 403 ú Feb 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
C. Procedure
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本文链接地址：747-400 AMM 飞机维护手册 空调 AIR CONDITIONING 1(83)
