S 764-068
(9)
Make sure that the resistance between the ground strap and the bonding jumper is a maximum of .005 ohm.
S 434-017
(10)
Connect the electrical connector, DV447 (10), to the valve (9).
G. Do the Installation Test for the Valve
S 824-018
(1)
From the outer side of the airplane, turn the manual drive collar until the valve is in the open position.
S 864-019
(2)
Turn the EQUIP COOLING selector, on the overhead panel, P5, to the STBY position.
S 864-020
(3)
Supply electrical power (Ref 24-22-00/201).
S 714-021
(4)
Make sure the valve moves to the closed position.
S 794-022
(5)
Feel for leaks around the valve.
(a)
Small leaks are permitted.
(b)
You must repair a large leak.
S 434-032
(6) Install the moisture shroud on the valve.
H. Put the Airplane to Its Usual Condition
S 864-023
(1)
Turn the EQUIP COOLING selector, on the P5 panel, to the NORM position.
S 864-024
(2)
Remove the electrical power, if it is not necessary (Ref 24-22-00/201).
TASK 21-58-12-004-034
4. Ground Exhaust Valve Actuator Removal (Fig. 401)_____________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
IPC 21-58-12, Fig. 1
(3)
WDM 21-58-16
(4)
SSM 21-58-06
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-12
ALL ú ú 02 Page 406 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL
B. Access
(1) Location Zone
122 Forward Cargo Compartment Forward Half, RH
C. Prepare for Removal
S 864-064
CAUTION: DO NOT OPERATE THE ELECTRICAL/ELECTRONIC EQUIPMENT WHEN YOU
_______ DO THIS PROCEDURE. IF YOU OPERATE THE ELECTRICAL EQUIPMENT WHEN THE EQUIPMENT COOLING SYSTEM IS OFF, YOU CAN CAUSE THE ELECTRICAL EQUIPMENT TO BECOME TOO HOT.
(1)
Remove electrical power (AMM 24-22-00/201)
S 034-035
(2)
Remove the moisture shroud from the valve.
S 034-042
(3)
Disconnect the electrical connector, DV447, from the valve.
S 034-045
(4)
Disconnect the bonding jumper (11) from the valve.
S 034-044
(5)
Remove the four screws (1) , three washers (2) , and one bonding lug which attach the actuator to the actuator adapter.
S 024-043
(6)
Slowly remove the actuator from the actuator adapter.
S 024-046
(7)
Remove the O-ring from the actuator.
S 414-065
CAUTION: KEEP THE ACTUATOR ADAPTER ATTACHED TO THE DRIVE HOUSING.
_______ IF YOU DO NOT KEEP THE ACTUATOR ADAPTER ATTACHED THE ACTUATOR ADAPTER MAY TURN AND MAY DAMAGE THE ELECTRICAL WIRING.
(8) Install two screws (1) to connect the actuator adapter to the drive housing.
TASK 21-58-12-404-048
5. Ground Exhaust Valve Actuator Installation (Fig. 401)
__________________________________________
A. References
(1)
24-22-00/201, Manual Control
(2)
WDM 21-58-16
(3)
SSM 21-58-16
B. Access
(1) Location Zone
122 Forward Cargo Compartment Forward Half, RH
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
21-58-12
ALL ú ú 02 Page 407 ú Jun 18/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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本文鏈接地址：747-400 AMM 飛機(jī)維護(hù)手冊(cè) 空調(diào) AIR CONDITIONING 2(107)
