E44641
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73-21-07
ALL ú ú N01A Page 452 ú Oct 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(6)
SSM 73-21-01, SSM 76-11-01, SSM 76-11-02, SSM 76-11-03,
SSM 76-11-04, SSM 77-12-02
C.
Access
(1)
Location Zones
412 Engine 1 - HPC Case
422 Engine 2 - HPC Case
432 Engine 3 - HPC Case
442 Engine 4 - HPC Case
(2)
Access Panels
415 and 416 Thrust Reverser Halves - Engine 1
425 and 426 Thrust Reverser Halves - Engine 2
435 and 436 Thrust Reverser Halves - Engine 3
445 and 446 Thrust Reverser Halves - Engine 4
D.
Procedure
S 864-129-N00
(1)
For the applicable engine, open these circuit breakers and install the DO-NOT-CLOSE tags:
(a)
P6 Main Power Distribution Panel
1) 6F15 ENG 1 PERF SOL PWR A
2) 6F16 ENG 1 PERF SOL PWR B
3) 6G15 SCU ALT PWR ENG 1
4) 6G23 ENG SCU 1
5) 6E15 ENG 2 PERF SOL PWR A
6) 6E16 ENG 2 PERF SOL PWR B
7) 6G16 SCU ALT PWR ENG 2
8) 6G24 ENG SCU 2
9) 6D15 ENG 3 PERF SOL PWR A
10) 6D16 ENG 3 PERF SOL PWR B
11) 6G17 SCU ALT PWR ENG 3
12) 6G25 ENG SCU 3
13) 6C15 ENG 4 PERF SOL PWR A
14) 6C16 ENG 4 PERF SOL PWR B
15) 6G18 SCU ALT PWR ENG 4
16) 6G26 ENG SCU 4
(2)
Open the fan cowl panels (AMM 71-11-04/201).
S 014-128-N00
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-21-07
ALL ú ú N01A Page 453 ú Jun 18/00
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
S 044-127-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 Deactivation for Ground Maintenance (AMM 78-31-00/201).
S 014-126-N00
(4)
Open the core cowl panels (AMM 71-11-06/201).
S 014-125-N00
WARNING: OBEY THE INSTRUCTIONS IN AMM 78-31-00/201 WHEN YOU OPEN THE
_______ THRUST REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURIES TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(5) Open the thrust reversers (AMM 78-31-00/201).
S 024-141-N00
CAUTION: DO NOT TWIST OR BEND THE WIRE HARNESS MORE THAN NECESSARY
_______ DURING THE REMOVAL OF THE WIRE HARNESS. IF THE WIRE HARNESS IS TWISTED OR BENT, YOU CAN CAUSE DAMAGE TO THE WIRE HARNESS.
(6)
Disconnect the W5J26 connector from the W2P26 connector as follows:
(a)
Find the W5J26 connector located at the 1:00 o'clock position on the High Pressure Compressor (HPC) case.
(b)
Disconnect the W5J26 connector from the W2P26 connector.
(c)
Disconnect the W6P12 harness connector from the W5J12 harness connector located on Flange K at the 3:30 o'clock position.
(d)
Remove the bolts and nuts that attach the W5J26 connector to the bracket.
(e)
Remove the W5J26 connector from the bracket.
(f)
Install protective covers on the electrical connectors.
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