B.
References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 75-24-02/401, Turbine-Vane Cooling-Air Duct
(4)
AMM 78-31-00/201, Thrust Reverser System
C.
Access
(1)
Location Zone 412 Engine 1 - Diffuser and Combustor Case 10 o'clock 422 Engine 2 - Diffuser and Combustor Case 10 o'clock 432 Engine 3 - Diffuser and Combustor Case 10 o'clock 442 Engine 4 - Diffuser and Combustor Case 10 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
D.
Prepare to Remove the No. 19, 20 or 21 Fuel Injector and Support
S 864-102-N00
(1) Make sure the applicable FUEL CONTROL switch is in the CUTOFF position.
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S 864-103-N00
WARNING:_______ MAKE SURE YOU OPEN THE CIRCUIT BREAKERS FOR THE ENGINE IGNITION
BEFORE YOU OPEN THE FUEL CONT VALVE. THE IGNITER PLUGS WILL
AUTOMATICALLY FIRE IF YOU ARE OUT OF ZERO DETENT, NACELLE
ANTI-ICE IS ON, CON IGNITION SWITCH IS SET TO "ON", OR ENGINE
START SWITCH IS PULLED TO "ON". IF THE COMBUSTION CHAMBER HAS
FUEL IN IT, AN INTERNAL ENGINE OR A TAILPIPE FIRE CAN OCCUR.
THE FIRE CAN CAUSE INJURY TO PERSONS OR DAMAGE TO THE ENGINE.
(2)
For the applicable engine, open these circuit breakers and install the DO-NOT-CLOSE tags:
(a)
P6 Main Power Distribution Panel 1) 6F1 IGN 1 ENG 1 2) 6F2 IGN 1 ENG 2 3) 6F3 IGN 1 ENG 3 4) 6F4 IGN 1 ENG 4 5) 6K19 IGN 2 ENG 1 6) 6K20 IGN 2 ENG 2 7) 6K21 IGN 2 ENG 3 8) 6K22 IGN 2 ENG 4 9) 6G19 STBY IGN ENG 1 10) 6G20 STBY IGN ENG 2 11) 6G21 STBY IGN ENG 3 12) 6G22 STBY IGN ENG 4
S 864-104-N00
(3)
For the applicable engine, open this circuit breaker and install the DO-NOT-CLOSE tag:
(a)
P6 Main Power Distribution Panel 1) 6L10 FUEL CONT VALVE ENG 1 2) 6L11 FUEL CONT VALVE ENG 2 3) 6L12 FUEL CONT VALVE ENG 3
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
4) 6L13 FUEL CONT VALVE ENG 4
S 014-390-N00
(4) Open the left fan cowl panel (AMM 71-11-04/201).
S 044-392-N00
WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVERSER. THE ACCIDENTAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT.
(5)
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
S 014-391-N00
(6)
Open the left core cowl panel (AMM 71-11-06/201).
S 014-393-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(7)
Open the left thrust reverser (AMM 78-31-00/201).
E.
Procedure
S 024-441-N00
(1)
Remove the No. 19, 20 or 21 fuel injector and support.
(a) 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：747-400 AMM 飞机维护手册 发动机燃油和控制 1(58)
