S 864-015
 (8)  
Make sure the ANTI-ICE & RAIN CONTROL ENG 1 & WING circuit breaker is closed.

 S 714-016

 (9)  
Do this test to make sure the valve operates correctly.

 (a)  
Put the WING ANTI-ICE switch in the ON position.

 (b)  
See that the L VALVE OPEN and R VALVE OPEN lights come on brightly for 1 to 3 seconds.

 (c)  
See that the L VALVE OPEN and R VALVE OPEN lights come on dimly after 3 seconds.

 (d)  
See that the wing anti-ice valves are open.

 (e)  
Put the WING ANTI-ICE switch in the OFF position.

 (f)  
See that the L VALVE OPEN and the R VALVE OPEN lights come on brightly for 1 to 3 seconds.

 (g)  
See that the L VALVE OPEN and the R VALVE OPEN lights go off after 3 seconds.

 (h)  
See that the wing anti-ice valves are closed.

 S 864-017
 (10) Seal and install the access panels (AMM 12-30-00/201).
 (a)  
Seal and install the 6307L panel for the left wing.

 (b)  
Seal and install the 6407L panel for the right wing.

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 ALL  ú ú 03 Page 404 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 WING THERMAL ANTI-ICING SHUTOFF VALVE - ADJUSTMENT/TEST
_______________________________________________________
 1.  General_______
 A.  This procedure contains a task that is a test of the Wing TAI Shut-off Valves.
 TASK 30-11-11-705-001
 2.  Wing TAI Shut-Off Valve Test____________________________
 A.  References
 (1)  
AMM 12-30-00/201 Wing Lower Surface Access Panels

 (2)  
AMM 24-22-00/201, Manual Control

 B.  Access
 (1)  
Location Zone
 101 Control Cabin - Left
 302 Left Wing - Outboard Leading Edge
 402 Right Wing - Outboard Leading Edge

 (2)  
Access Panels
 6307L
 6407R

 C.  Procedure
 S 865-002
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 865-003

 (2)  
See that these circuit breakers are closed:

 (a)  
ANTI-ICE & RAIN - ENGINE #1 AND WING

 (b)  
ANTI-ICE AND RAIN - WING VALVE

 (c)  
AIR/GND RELAY & LIGHTS

 (d)  
NOSE GEAR AIR/GND

 S 715-004
 (3)  Momentarily push the L VALVE OPEN and the R VALVE OPEN lights on the P5-11 panel.
 NOTE: Each light will come on, then go off.
____
 S 865-005
 (4)  See that the two thrust levers are in the IDLE position.
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 ALL  ú ú 03 Page 501 ú Jul 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 S 865-006

 WARNING:_______ STAY CLEAR OF THE LEADING EDGE SLATS AND FLAPS.  THE FLAPS
 AND THE SLATS CAN ACCIDENTALLY OPERATE QUICKLY.  THIS CAN CAUSE
 INJURY TO PERSONS.
 (5)  Remove the access panels to get to the TAI valves
 (AMM 12-30-00/201).
 S 715-007
 (6)  Make sure the TAI valves open correctly.

 (a)  
Put the WING ANTI-ICE switch in the ON position.

 (b)  
Make sure the L VALVE OPEN and R VALVE OPEN lights come on brightly for 1 to 3 seconds.

 (c)  
Make sure the L VALVE OPEN and R VALVE OPEN lights are on dimly after 3 seconds.

 (d)  
Make sure the wing TAI valves open.

 S 725-008
 (7)  Do this test of the TAI valve indication for the left wing.
　
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