(a) Make sure the distance between the detector element (3) and the support tube assembly (2) is between 0.12 and 0.50 inches (3.0
-13.0 newton-meters).
(15)
Attach the retaining nuts (4) with a lockwire.
S 434-071
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747-400 MAINTENANCE MANUAL
S 434-072
(16)
Install the screws (6), airplane wiring (7), washers (8), and nuts (9) on the terminal lug ends.
S 764-035
(17)
Do a check to make sure that the resistance between the terminal lug (10) shell and the primary structure of the airplane is not more than 0.010 ohms.
S 914-040
(18)
Attach the airplane wiring connectors (7) to the terminal lugs (10) with a lockwire.
S 414-041
(19)
Close the applicable thrust reverser half (AMM 78-31-00/201).
S 864-042
(20)
Remove the DO-NOT-CLOSE tags and close the applicable circuit breakers as shown in Fig. 401.
S 864-043
(21)
Supply electrical power (AMM 24-22-00/201).
S 714-044
(22)
Do a test of the engine fire and overheat detection system operation (AMM 26-11-00/501).
TASK 26-11-02-004-076
4. Remove the Engine Fire and Overheat Assembly (Fig. 401)____________________________________________
A. References
(1)
AMM 71-11-06/201, Core Cowl Panels
(2)
AMM 78-31-00/201, Thrust Reverser System
(3)
IPC 26-11-02 Fig. 1
(4)
WDM 26-11-11 thru 26-11-43
(5)
SSM 26-11-01 thru 26-11-04
B. Access
(1) Location Zones
412 Engine 1
422 Engine 2
432 Engine 3
442 Engine 4
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747-400
MAINTENANCE MANUAL
(2)
Access Panels
415 Left Thrust Reverser Half - Engine 1
416 Right Thrust Reverser Half - Engine 1
417 Left Core Cowl - Engine 1
418 Right Core Cowl - Engine 1
425 Left Thrust Reverser Half - Engine 2
426 Right Thrust Reverser Half - Engine 2
427 Left Core Cowl - Engine 2
428 Right Core Cowl - Engine 2
435 Left Thrust Reverser Half - Engine 3
436 Right Thrust Reverser Half - Engine 3
437 Left Core Cowl - Engine 3
438 Right Core Cowl - Engine 3
445 Left Thrust Reverser Half - Engine 4
446 Right Thrust Reverser Half - Engine 4
447 Left Core Cowl - Engine 4
448 Right Core Cowl - Engine 4
C.
Prepare for the Removal
S 864-077
(1) For removal of the engine fire and overheat detector elements, open the applicable circuit breakers as shown in Fig. 401 and attach DO-NOT-CLOSE tags.
S 014-078
WARNING: YOU MUST OPEN THE THRUST REVERSER BEFORE YOU OPEN THE CORE COWL
_______ TO PREVENT DAMAGE TO THE REVERSER OR THE COWL. MAKE SURE YOU FOLLOW THE PROCEDURE IN AMM 78-31-00/201 WHEN YOU OPEN THE THRUST REVERSER. IF YOU DO NOT FOLLOW THIS PROCEDURE, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(2) Open the applicable thrust reverser half and core cowl panels to get access to the detectors (AMM 78-31-00/201 and 71-11-06/201).
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本文链接地址：747-400 AMM 飞机维护手册 防火 FIRE PROTECTION 1(40)
