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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
EEC OIL TEMPERATURE THERMOCOUPLE PROBE - REMOVAL/INSTALLATION
_____________________________________________________________
1. General
_______
A. This procedure gives the instructions to remove and install the thermocouple probe for the EEC oil temperature. The EEC oil temperature thermocouple probe will be referred to as the oil temperature probe in this procedure.
B. The oil temperature probe is installed on the front face of the main gearbox at the 7 o'clock position.
C. You can get access to the oil temperature probe through the left thrust reverser.
TASK 73-21-10-004-001-N00
2. Remove the EEC Oil Temperature Thermocouple Probe (Fig. 401)
_________________________________________________
A. Standard Tools and Equipment
(1)
Container - 5 US gallon (19 liters), to catch the oil
B.
References
(1)
AMM 71-11-04/201, Fan Cowl Panels
(2)
AMM 71-11-06/201, Core Cowl Panels
(3)
AMM 78-31-00/201, Thrust Reverser System
C.
Access
(1)
Location Zone 412 Engine 1 - Main Gearbox Fwd Face 7 o'clock 422 Engine 2 - Main Gearbox Fwd Face 7 o'clock 432 Engine 3 - Main Gearbox Fwd Face 7 o'clock 442 Engine 4 - Main Gearbox Fwd Face 7 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 Oil Temperature Probe
S 864-017-N00
(1)
For the applicable engine, open these circuit breakers and install the DO-NOT-CLOSE tags:
(a)
P6 Main Power Distribution Panel
1) 6G15 SCU ALT PWR ENG 1
2) 6G23 ENG SCU 1
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
SEE A
SEE B
MAIN GEARBOX, LEFT SIDE,
FRONT FACE
A
4. WASHER
(2 LOCATIONS)
3. NUT
(2 LOCATIONS)
6. ADAPTER
5. PACKING
7. EEC OIL TEMPERATURE
9. NUT THERMOCOUPLE PROBE
(2 LOCATIONS)
8. WASHER
(2 LOCATIONS)
B
EEC Oil Temperature Thermocouple Probe Installation
Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
3) 6G16 SCU ALT PWR ENG 2
4) 6G24 ENG SCU 2
5) 6G17 SCU ALT PWR ENG 3
6) 6G25 ENG SCU 3
7) 6G18 SCU ALT PWR ENG 4
8) 6G26 ENG SCU 4
(b) P414 Main Power Distribution Panel
S 014-039-N00
(2) Open the left fan cowl panel (AMM 71-11-04/201).
S 044-038-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.
(3)
Do this procedure: Thrust Reverser Deactivation for Ground Maintenance (AMM 78-31-00/201).
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