S 415-031-N00
(25)
Close the left core cowl panel (AMM 71-11-06/201).
S 415-032-N00
(26)
Close the left fan cowl panel (AMM 71-11-04/201).
S 445-033-N00
(27)
Do the activation procedure for the thrust reverser (AMM 78-31-00/201).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
NACELLE ZONE VENTILATION SHUTOFF VALVE - REMOVAL/INSTALLATION
_____________________________________________________________
1. General
_______
A. This procedure includes the tasks for the removal and installation of the shutoff valve for the nacelle zone ventilation.
B. The shutoff valve is attached to the inner wall of the thrust reverser half.
C. You must open the left half of the thrust reverser to get access to the shutoff valve.
TASK 75-23-02-004-001-N00
2. Nacelle Zone Ventilation Shutoff Valve Removal (Fig. 401)
______________________________________________
A. References
(1)
AMM 71-11-04/201, Fan Cowl Panel
(2)
AMM 71-11-06/201, Core Cowl Panel
(3)
AMM 78-31-00/201, Thrust Reverser System
(4)
IPC 75-23-02 Fig. 1
(5)
WDM 75-23-11, 75-23-21
(6)
SSM 75-23-01
B.
Access
(1)
Location Zone 415 Engine 1 - Inner Wall of Left Thrust Reverser Half 425 Engine 2 - Inner Wall of Left Thrust Reverser Half 435 Engine 3 - Inner Wall of Left Thrust Reverser Half 445 Engine 4 - Inner Wall of Left Thrust Reverser Half
(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 864-002-N00
(1) For the applicable engine, open these circuit breakers and attach a DO-NOT-CLOSE tag:
(a) P6 Main Power Distribution Panel
1) 6F14 ENG 1 EEAC
2) 6E14 ENG 2 EEAC
3) 6D14 ENG 3 EEAC
4) 6C14 ENG 4 EEAC
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
INNER WALL OF THE LEFT THRUST REVERSER HALF
2. CLAMPS
1. SHUTOFF VALVE FOR
NACELLE ZONE
VENTILATION
A
(V353) DUCT FOR NACELLEVALVE ZONE VENTILATION
POSITION
INDICATOR
SEE B
FWD
7. ELECTRICAL 0.50 INCH CONNECTOR (12.7 MM) (DV353)
3. NUT
4. SCREW
TUBE
6. PNEUMATIC T-BOLT2. CLAMP
A 5. BONDING JUMPER
A
INNER WALL OF THE LEFT THRUST REVERSER HALF
LOCKING PIN FOR
THE MANUAL OVERRIDE
COTTER
VALVE POSITION PIN
INDICATOR
5. BONDING JUMPER
4. SCREW
3. NUT
(SHOWN IN OPEN POSITION)
B
A-A
Nacelle Zone Ventilation Shutoff Valve Installation
Figure 401
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ALL ú ú N01 Page 402 ú Oct 10/90
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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