T/C 3 T/C 4
T/C 2 T/C 1
EGT (TT4.95) THERMOCOUPLE CABLE CONTINUITY AND INSULATION RESISTANCE CHECK
L-A2425
E
L-A2424
Exhaust Gas Temperature (TT4.95) Thermocouple Cable Inspection Figure 601 (Sheet 3)
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S 046-023-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.
(1)
Do this procedure: Thrust Reverser Deactivation for Ground
Maintenance (AMM 78-31-00/201).
S 016-001-N00
(2)
Open the core cowl panels (AMM 71-11-06/201).
S 216-002-N00
(3)
Visually examine the EGT thermocouple cable for signs of damage to the steel braid.
NOTE: Refer to AMM 73-21-07/601 to make an inspection of the W6
____
EEC cable.
(a) If there is damage to the braid, replace the EGT thermocouple cable (AMM 77-21-02/401).
S 216-045-N00
(4) Examine the EGT thermocouple cable for damage at the connectors.
(a) If you find damage to the connectors on the EGT thermocouple cable, replace the EGT thermocouple cable (AMM 77-21-02/401).
S 216-044-N00
(5)
Do this task: Exhaust Gas Temperature (TT4.95) Thermocouple Cable Terminal Box Examination (AMM 77-21-04/601).
S 216-043-N00
(6)
Do this task: Continuity and Insulation Resistance Check.
S 416-003-N00
(7)
Close the core cowl panels (AMM 71-11-06/201).
S 866-032-N00
(8)
Do the activation procedure for the thrust reverser
(AMM 78-31-00/201).
TASK 77-21-02-766-004-N00
3. Continuity and Insulation Resistance Check (Fig. 601)
__________________________________________
A. Standard Tools and Equipment
(1)
Electronic Multimeter - Model 2795, Simpson Electric Co., American Gage and Machine Co., (Katy Industries Inc.), 853 Dundee Avenue, Elgin, IL 60120
B.
References
(1)
AMM 71-11-06/201, Core Cowl Panels
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(2)
AMM 77-21-02/401, EGT (TT4.95) Thermocouple Cable
(3)
AMM 78-31-00/201, Thrust Reverser System
C. 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 Panels
417 and 418 Core Cowl Panels - Engine 1
427 and 427 Core Cowl Panels - Engine 2
437 and 438 Core Cowl Panels - Engine 3
447 and 448 Core Cowl Panels - Engine 4
D. Procedure
S 866-034-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
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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(42)
