(2)
78-31-00/201, Thrust Reverser System
(3)
IPC 36-11-05 Fig. 1
B.
Access
(1)
Location Zone
412 Engine 1 - HPC Case 9 o'clock
422 Engine 2 - HPC Case 9 o'clock
432 Engine 3 - HPC Case 9 o'clock
442 Engine 4 - HPC Case 9 o'clock
(2)
Access Panel
415 Left Thrust Reverser Half - Engine 1
425 Left Thrust Reverser Half - Engine 2
435 Left Thrust Reverser Half - Engine 3
445 Left Thrust Reverser Half - Engine 4
C.
Procedure
S 862-008
(1)
Release the pressure in the pneumatic system (Ref 36-00-00/201).
S 012-009
(2)
Open the left thrust reverser half (Ref 78-31-00/201).
S 442-010
(3)
Remove the positioning screw from the switch actuating lever.
(a)
Replace the C-seal if it has any damage.
S 442-011
(4)
Install the positioning screw with C-seal in the actuator cap tighten the screw to 15-25 pound-inches (1.7-2.8 N.m).
(5)
Close the left thrust reverser half (Ref 78-31-00/201).
S 412-012
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36-11-05
ALL ú ú 01P Page 203 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
HIGH PRESSURE SHUTOFF VALVE (HPSOV) - REMOVAL/INSTALLATION
__________________________________________________________
1. General
_______
A. This procedure contains two tasks. The first task removes the high pressure shutoff valve (HPSOV). The second task installs the high pressure shutoff valve (HPSOV).
B. The HPSOV is installed on the engine in the 9:00 o'clock position. It is approximately 3 feet aft of the fan frame. It is necessary to open the left half of the thrust reverser to get access to the HPSOV.
TASK 36-11-05-004-040
2. Remove the HPSOV (Fig. 401)
________________
A. References
(1)
AMM 20-11-28/401, Lockwire
(2)
24-22-00/201, Manual Control
(3)
36-00-00/201, Pneumatic System
(4)
AMM 36-11-01/401, Pneumatic Manifold
(5)
71-11-04/201, Fan Cowl Panels
(6)
71-11-06/201, Core Cowl Panels
(7)
78-31-00/201, Thrust Reverser System
(8)
IPC 36-11-05 Fig. 1
B.
Access
(1)
Location Zone 412 Engine 1 - High Pressure Compressor Case 9 o'clock 422 Engine 2 - High Pressure Compressor Case 9 o'clock 432 Engine 3 - High Pressure Compressor Case 9 o'clock 442 Engine 4 - High Pressure Compressor Case 9 o'clock
(2)
Access Panel
415 Left Thrust Reverser Half - Engine 1
425 Left Thrust Reverser Half - Engine 2
435 Left Thrust Reverser Half - Engine 3
445 Left Thrust Reverser Half - Engine 4
C.
Prepare to Remove the HPSOV
(1)
Supply electrical power (Ref 24-22-00/201).
S 864-002
S 864-003
WARNING: YOU MUST RELEASE THE PRESSURE IN THE PNEUMATIC DUCT BEFORE YOU
_______ REMOVE A PNEUMATIC SYSTEM COMPONENT. THE HOT, HIGH PRESSURE AIR CAN CAUSE INJURIES TO PERSONS.
(2) Release the pressure in the pneumatic system (Ref 36-00-00/201).
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36-11-05
ALL ú ú 01P Page 401 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
BONDING
JUMPER
SHUTOFF VALVE HIGH PRESSURE
SEE A
SHUTOFF VALVE (HPSOV) 1. HIGH PRESURE DSEE P-CLAMP CSEE HPSOV TERMINAL BLOCK
3. WASHER 8. WIRES 2. NUT
P-CLAMP
SEE E
MANUAL OVERRIDE
4.
COUPLING DRIVE
5.
SEAL (NOT SHOWN)
HIGH PRESSURE SHUTOFF VALVE A
High Pressure Shutoff Valve Installation Figure 401 (Sheet 1)
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本文链接地址：747-400 AMM 飞机维护手册 气动系统 PNEUMATIC SYSTEM(87)
