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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
W3P5 W5P5
W3P1
W5P6
SEE M L
NUTS
W3 HARNESS W5 HARNESS
BOLT CLAMP BOLT M CLAMP FWD TUBE HARNESS SUPPORT EEC WIRING
LA9298 (0000)
Figure 401 (Sheet 6) EEC Wiring Harness W3 Installation
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SEE P
W3P1
W5P6
MAIN
GEARBOX
W3P18 BRACKET
SEE O
N W3,W5
HARNESS
MAIN GEARBOX
OIL PRESSURE
TUBE
CLAMP
BOLT
FWD
BOLTS
NUT
BOLT
NUTS
O
GROUND STRAP
W3,W5
HARNESS
P
LA9299 (0000)
EEC Wiring Harness W3 Installation
Figure 401 (Sheet 7)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
D. Procedure
S 864-041-N00
(1)
For the applicable engine, open this circuit breaker and install the DO-NOT-CLOSE tag:
(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
S 014-040-N00
(2) Open the left fan cowl panel (AMM 71-11-04/201).
S 044-039-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).
(4)
Open the left core cowl panel (AMM 71-11-06/201).
S 014-038-N00
S 014-037-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 left thrust reverser (AMM 78-31-00/201).
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