B.  Access
 (1)  
Location Zones
 511 Leading edge to front spar (Left)
 521 Leading edge to front spar (Left)
 611 Leading edge to front spar (Right)
 621 Leading edge to frontspar (Right)

 (2)  
Access Panels
 511KT Fixed wing upper panel
 521UBX Fixed wing lower panel
 611KT Fixed wing upper panel
 611UBX Fixed wing lower panel

 C.  Procedure
 S 864-002
 (1)  Open the circuit breaker on the overhead circuit breaker panel, P11, and attach DO-NOT-CLOSE tags:
 (a)  11A35, INDICATOR LIGHTS 4
 S 864-033
 (2)  Open this circuit breaker on the overhead breaker panel, P11, and attach a DO-NOT-CLOSE tag:
 (a)  11C28, 11C29, 11D29, or 11R20, WING ANTIC ICE or ANTI-ICE WING
 S 864-003
 WARNING: DO THE THRUST REVERSER DEACTIVATION PROCEDURE TO PREVENT THE
_______ OPERATION OF THE THRUST REVESER. ACCIDENTIAL OPERATION OF THE THRUST REVERSER CAN CAUSE INJURY OR DAMAGE.
 (3)  Do the Thrust-reverser Deactivation for Ground Maintenance procedure (AMM 78-31-00/201).
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MAINTENANCE MANUAL

WING THERMAL ANTI-ICE (TAI) VALVE
SEE A
OUTBD  FWD 
2. TUBE ASSEMBLY  GROUND STUDS 
1. WING TAI VALVE 
SECTION INBOARD DUCT 
1 ASSEMBLIES 6. JUMPER A  3. CLAMP  5. CLAMP 4. GASKET 
1  ONLY ONE JUMPER ASSEMBLY INSTALLED ON SOME AIRPLANES 
Figure 401 Wing TAI Valve Installation 

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MAINTENANCE MANUAL

 S 014-004
 (4)  Remove these panels to get access the Wing TAI valves:
 (a)  
For the left wing TAI valve (V52) remove the fixed wing upper panel 511KT and the fixed wing lower panel 521UBX (AMM 06-44-00/201).

 (b)  
For right wing TAI valve (V57) remove the fixed wing upper panel 611KT and the fixed wing lower panel 621UBX (AMM 06-44-00/201).

 S 034-005
 WARNING: YOU MUST LET THE DUCT TO BECOME COOL.  A
　
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