S 714-060-N00
(7) Do the test of the EGT box and cable that is shown in the Power-Plant Test-Reference Table (AMM 71-00-00/501).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
EXHAUST GAS TEMPERATURE (TT4.95) THERMOCOUPLE CABLE TERMINAL BOX-
_________________________________________________________________ INSPECTION/CHECK
________________
1. General_______
A. This task does a visual examination of the exhaust gas temperature (EGT) thermocouple cable terminal box.
B. The EGT thermocouple cable terminal box is installed on the turbine exhaust case at the 5 o'clock position.
C. You must open the core cowls to get access to the EGT thermocouple cable terminal box.
TASK 77-21-04-206-001-N00
2. Examine the Exhaust Gas Temperature (TT4.95) Thermocouple Cable Terminal Box____________________________________________________________________________ (Fig. 601)
A. Consumable Materials
(1)
D00390 Oil - Engine
B.
References
(1)
AMM 71-00-00/501, Power Plant
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
IPC 77-21-04 Fig. 1
C.
Access
(1)
Location Zone 412 Engine 1 - Turbine Exhaust Case 5 o'clock 422 Engine 2 - Turbine Exhaust Case 5 o'clock 432 Engine 3 - Turbine Exhaust Case 5 o'clock 442 Engine 4 - Turbine Exhaust Case 5 o'clock
(2)
Access Panel
418 Right Core Cowl Panel - Engine 1
428 Right Core Cowl Panel - Engine 2
438 Right Core Cowl Panel - Engine 3
448 Right Core Cowl Panel - Engine 4
D.
Procedure
S 866-016-N00
(1) For the applicable engine, open these circuit breakers on the main power distribution panel, P6, and install the DO-NOT-CLOSE tags:
(a)
6G15 SCU ALT PWR ENG 1
(b)
6G23 ENG SCU 1
(c)
6G16 SCU ALT PWR ENG 2
(d)
6G24 ENG SCU 2
(e)
6G17 SCU ALT PWR ENG 3
(f)
6G25 ENG SCU 3
(g)
6G18 SCU ALT PWR ENG 4
(h)
6G26 ENG SCU 4
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
FLANGE P
FLANGE S
FLANGE T
SEE A
TURBINE EXHAUST CASE
EGT (TT4.95) THERMOCOUPLE CABLE
EEC GROUND
HARNESS LEAD NUT - ALUMEL STUD
EGT (TT4.95) (2 LOCATIONS)
THERMOCOUPLE CABLE TERMINAL BOX (2 LOCATIONS) NUT - CHROMEL STUD
SEE B
SCREW (2 LOCATIONS) FWD
A
GROUND TERMINAL
COVER
EGT (TT4.95) THERMOCOUPLE CABLE TERMINAL STUD (4 LOCATIONS)
SCREW
(2 LOCATIONS) FLANGE P BRACKET SCREW (2 LOCATIONS)
OUTER CLAMP HALF
EGT (TT4.95)
THERMOCOUPLE
RIGHT EGT (TT4.95)
CABLE TERMINAL
THERMOCOUPLE
BOX
CABLE HALF
LEFT EGT (TT4.95) THERMOCOUPLE INNER CLAMP HALF
CABLE HALF
B
L-A3849
Exhaust Gas Temperature (TT4.95) Thermocouple Cable Terminal Box Inspection Figure 601
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(2) S 016-003-N00Open the right core cowl panel (AMM 71-11-06/201).
(3) S 036-004-N00Remove the screws that attach these components to the EGT terminal box: (a) The EGT terminal box cover (b) The EGT harness ground lead (c) The inner clamp half (d) The outer clamp half.
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本文链接地址：747-400 AMM 飞机维护手册 发动机指示 ENGINE INDICATING(50)
