(a)
Put the W4 harness on the right side of the engine.
(b)
Make sure the tracer cord is pointed outboard.
(c)
Make sure the master keyway is pointed inboard.
(d)
Remove the protective covers from the electrical connector.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
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ALL ú ú N01A Page 431 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / PW4000 SERIES /747-400 / ENGINES/MAINTENANCE MANUAL ////////////////////////
(e)
Find the bracket for the W4J25 connector at the 1 o'clock
position on HPC case.
(f)
Attach the W4J25 connector to the bracket.
1) Make sure the cutout is pointed rearward.
(g)
Lubricate the bolt threads with engine oil.
(h)
Align the boltholes and install the bolts.
(i)
Tighten the bolts to 36-40 pound-inches (4.067-4.519
newton-meters).
S 424-196-N00
CAUTION: EXAMINE THE HARNESS CONNECTORS AND THE RECEPTACLES THAT THEY
_______ CONNECT TO FOR BENT PINS AND CONTAMINATION. BENT PINS AND CONNECTOR CONTAMINATION CAN CAUSE THE HARNESS TO FAIL.
USE THE CORRECT ASSEMBLY PROCEDURE, AND TOOLS, FOR THE HARNESS CONNECTOR INSTALLATION (AMM 70-24-05/201). IF YOU USE THE INCORRECT ASSEMBLY PROCEDURE, OR TOOLS, A DAMAGED OR LOOSE CONNECTOR CAN OCCUR. A LOOSE CONNECTOR PERMITS VIBRATION, WHICH CAUSES THE CONTACTS TO WEAR AND DECREASES THE LIGHTNING PROTECTION.
(2)
Connect the W4P4 connector to the solenoid for the 2.9 bleed valve as follows (AMM 70-24-05/201):
(a)
Remove the protective covers from the electrical connectors.
(b)
Find the solenoid for the 2.9 bleed valve on the intermediate case at the 5 o'clock position.
(c)
Connect the W4P4 connector to the connector on the outboard
connector of the solenoid for the 2.9 bleed valve.
NOTE: You can use the torque adapter (PWA 85749) to tighten
____
the W4P4 connector.
S 424-112-N00
(3)
Connect the W4P2 connector to the fuel metering unit as follows (AMM 70-24-05/201).
(a)
Remove the protective covers from the electrical connectors.
(b)
Find the fuel metering unit on the front side of the fuel pump at the 5 o'clock position.
(c)
Connect the W4P2 connector to the forward connector on the fuel metering unit.
S 424-111-N00
(4)
ENGINES WITH SCU'S; Connect the W4P23 connector to the EEC speed transducer (N1) as follows (AMM 70-24-05/201):
(a)
Find the EEC speed transducer (N1) on the intermediate case at the 4:30 o'clock position.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-21-07
ALL ú ú N01A Page 432 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
(b)
Remove the protective covers from the electrical connectors.
(c)
Connect the W4P23 connector to the EEC speed transducer (N1) (AMM 70-24-05/201).
S 424-109-N00
(5)
ENGINES WITHOUT SCU'S; Connect the W4P19 connector to the EEC speed transducer (N1) (AMM 70-24-05/201):
(a)
Remove the protective covers from the electrical connectors.
(b)
Find the EEC speed transducer (N1) on the intermediate case at the 4:30 o'clock position.
(c)
Connect the W4P19 connector to the EEC speed transducer.
S 424-108-N00
(6)
Connect the W4P3 connector to the actuator for the variable stator vanes as follows (AMM 70-24-05/201):
(a)
Remove the protective covers from the electrical connectors.
(b)
Find the actuator for the variable stator vanes at the 4 o'clock position.
(c)
Connect the W4P3 connector to the lower connector on the actuator for the variable stator vanes.
S 424-107-N00
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本文链接地址：747-400 AMM 飞机维护手册 发动机燃油和控制 2(48)
