S 415-020-N00
S 415-021-N00
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(4) S 445-022-N00Do the activation procedure for the thrust reverser (AMM 78-31-00/201).
(5) S 865-017-N00Remove electrical power if it is not necessary (AMM 24-22-00/201).
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OIL PRESSURE TRANSMITTER - REMOVAL/INSTALLATION
_______________________________________________
1. General
_______
A. This procedure gives the instructions to remove and install the oil pressure transmitter (T679).
B. The oil pressure transmitter is installed on the forward case of the high pressure compressor (HPC) at the 10:00 o'clock position.
C. You can get access through the left thrust reverser.
TASK 79-32-01-004-001-N00
2. Remove the Oil Pressure Transmitter (Fig. 401)
___________________________________
A. 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
(4)
IPC 79-32-01 Fig. 1
(5)
WDM 79-32-11
(6)
WDM 79-32-12
(7)
SSM 79-00-01
B.
Access
(1)
Location Zone
412 Engine 1 - Fwd HPC Case 10:00 o'clock
422 Engine 2 - Fwd HPC Case 10:00 o'clock
432 Engine 3 - Fwd HPC Case 10:00 o'clock
442 Engine 4 - Fwd HPC Case 10:00 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
C.
Prepare to Remove the Oil Pressure Transmitter
S 864-002-N00
(1) For the applicable engine, open this circuit breaker and install the DO-NOT-CLOSE tag:
(a) P6 Main Power Distribution Panel
1) 6D1 OIL PRESS ENG 1
2) 6D2 OIL PRESS ENG 2
3) 6D3 OIL PRESS ENG 3
4) 6D4 OIL PRESS ENG 4
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
OIL PRESSURE
ELECTRICAL T679 TRANSMITTER,
DT679 CONNECTOR,
SEE A A
FWD
A
INTERMEDIATE
CASE (REF)
ENGINES WITHOUT SB 79-2036
A
Oil Pressure Transmitter Installation Figure 401 (Sheet 1)
E18742
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LOCKNUT (NOT SHOWN) ELBOW OIL PRESSURE TUBE
BRACKET ELECTRICAL B CONNECTOR, DT679 OIL PRESSURE B TRANSMITTER, T679 30` (REF)
ELBOW VENT TUBE TEE BRACKET ELECTRICAL CONNECTOR, DT679 OIL PRESSURE TRANSMITTER, T679 BRACKET
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