THE CABLES CAN BE DAMAGED AND THE GENERATOR CAN TRIP OFF.
(c) Put the shutoff valve (1) as shown in View A. 1) Adjust the shutoff valve position.
NOTE: Make sure the bottom of the shutoff valve is close
____ to the inner wall of the left thrust reverser.
2) Install the clamps (2) so the T-bolt points out and down. 3) Turn the clamp on the flange.
NOTE: Make sure the head of the T-bolt is less than
____
0.5 inch (12.7 mm) from the inner wall surface of the thrust reverser half.
4) Tighten clamp nuts.
(d)
Connect the pneumatic tube (6) to the shutoff valve (1). 1) Tighten the tube nut.
(e)
Connect the electrical connector DV353 (7) to the shutoff valve receptacle.
(f)
Connect the bonding jumper (5) to the shutoff valve (1) with the screw (4) and the nut (3) (AMM 20-11-15/401). 1) Tighten the nut.
(g)
Make sure the bonding resistance between the valve housing (1) and the screw (4) is not more than 0.001 ohm (AMM 20-22-01/601).
S 414-027-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU CLOSE THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(3) Close the left thrust reverser (AMM 78-31-00/201).
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(4) S 414-029-N00Close the left core cowl panel (AMM 71-11-06/201).
(5) S 414-028-N00Close the left fan cowl panel (AMM 71-11-04/201).
(6) S 444-030-N00Do the activation procedure for the thrust reverser (AMM 78-31-00/201).
(7) S 864-019-N00For the applicable engine, remove the DO-NOT-CLOSE tag and close the circuit breakers as follows. (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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
NACELLE ZONE VENTILATION DUCT - REMOVAL/INSTALLATION
____________________________________________________
1. General
_______
A. This procedure includes the tasks for the removal and installation of the ventilation duct for the nacelle zone.
B. The ventilation duct is attached to the inner wall of the left thrust reverser.
C. You must open the left thrust reverser to get access to the ventilation duct.
TASK 75-23-03-004-001-N00
2. Nacelle Zone Ventilation Duct 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
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 014-018-N00
(1) Open the left fan cowl panel (AMM 71-11-04/201).
S 044-019-N00
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