I. Ground Wing Thermal Anti-Icing Solenoid Valve Installation Test
SUBTASK 30-11-12-860-002
(1) Remove the safety tags and close these circuit breakers:
CAPT Electrical System Panel, P18-3
Row Col Number Name
A 1 C00146 ANTI-ICE & RAIN WING ANTI-ICE VALVE
A 6 C00148 ANTI-ICE & RAIN ENG 1 & WING CONT
SUBTASK 30-11-12-760-001
(2) Use the intrinsically safe approved bonding meter, COM-1550, to make sure the resistance
between the solenoid valve and the airplane structure is 0.008 ohm (8 milliohms) or less.
SUBTASK 30-11-12-710-001
(3) Do this test of the solenoid valve:
NOTE: Two people are necessary to complete this test.
(a) While one person listens to the solenoid valve, put the WING ANTI-ICE switch in the ON
position.
(b) If the solenoid valve makes a clicking sound, then the valve is open.
NOTE: The solenoid valve operates correctly.
(c) Put the WING ANTI-ICE switch in the OFF position.
J. Put the Airplane Back to Its Usual Condition
SUBTASK 30-11-12-410-004
WARNING
OBEY THE INSTRUCTIONS IN THE PROCEDURE TO CLOSE THE THRUST
REVERSERS. IF YOU DO NOT OBEY THE INSTRUCTIONS WHEN YOU
CLOSE THE THRUST REVERSERS, INJURIES TO PERSONS OR DAMAGE
TO EQUIPMENT CAN OCCUR.
(1) Do this task: Close the Thrust Reverser (Selection), TASK 78-31-00-010-804-F00.
END OF TASK
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
30-11-12
Page 409
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
ILF ALL
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