S 866-038-N00
(19)
For the applicable engine, remove the DO-NOT-CLOSE tags and close these circuit breakers on the main power distribution panel, P6:
(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
S 716-046-N00
(20) 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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77-21-02
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
EXHAUST GAS TEMPERATURE (TT4.95) THERMOCOUPLE CABLE - CLEANING/PAINTING
_______________________________________________________________________
1. General
_______
A. This task is to clean the left and the right exhaust gas temperature (TT4.95) thermocouple cable.
B. You must open the core cowl panels to get access to the exhaust gas temperature (EGT) cables.
TASK 77-21-02-107-001-N00
2. EGT (TT4.95) Thermocouple Cable Cleaning (Fig. 701)
________________________________________
A. Standard Tools and Equipment
(1)
Air Source - Compressed, Clean, Filtered, Dry - 30 psi (200 kPa)
B.
Consumable Materials
(1)
B00448 Solvent . 1,1,1 Trichloroethane Inhibited, MIL-T-81533
(2)
D00390 Oil - Engine
C.
References
(1)
AMM 71-11-06/201, Core Cowl Panels
(2)
IPC 77-21-03, Fig. 1
(3)
IPC 77-21-04, Fig. 1
D.
Access
(1)
Location Zone
412 Engine 1 - Turbine Exhaust Case
422 Engine 2 - Turbine Exhaust Case
432 Engine 3 - Turbine Exhaust Case
442 Engine 4 - Turbine Exhaust Case
(2)
Access Panel
417 and 418 Core Cowl Panels - Engine 1
427 and 428 Core Cowl Panels - Engine 2
437 and 438 Core Cowl Panels - Engine 3
447 and 448 Core Cowl Panels - Engine 4
E.
Procedure
S 867-017-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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
SEE B
FLANGE P FLANGE P
SEE A FLANGE S FLANGE S
FLANGE T FLANGE T
EGT (TT4.95) THERMOCOUPLE PROBE (4 PLACES)
SEE F
RIGHT EGT (TT4.95) THERMOCOUPLE CABLE HALF
TURBINE EXHAUST CASE
LEFT EGT (TT4.95)
TURBINE THERMOCOUPLE
EXHAUST CABLE HALF
CASE
FWD
SEE E
SEE D
SEE C EGT (TT4.95) THERMOCOUPLE
FWD A CABLE TERMINAL B
BOX SEE G
Exhaust Gas Temperature (TT4.95) Thermocouple Cable Cleaning Figure 701 (Sheet 1)
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77-21-02
ALL ú ú N01 Page 702 ú Dec 10/88
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本文鏈接地址：747-400 AMM 飛機維護手冊 發動機指示 ENGINE INDICATING(45)
