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A
747-400 MAINTENANCE MANUAL
 8) 7C17 FLT CONT ELEC 2R-DC
 (c)  
P414 Power Distribution Center - Left
 1) 414A5 LE FLAP ELEC DRIVE 1
 2) 414A2 LE FLAP ELEC DRIVE 4

 (d)  
P415 Power Distribution Center - Right
 1) 415M35 LE FLAP ELEC DRIVE 2
 2) 415B32 LE FLAP ELEC DRIVE 3

 S 492-108
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE LE FLAP SAFETY LOCKS. THE LE FLAPS CAN MOVE QUICKLY IF YOU DO NOT INSTALL THE SAFETY LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  
Do this task: "Extended Leading Edge Flap Deactivation and Safety Lock Installation" (AMM 27-81-00/201).

 S 862-109

 (3)  
Do this task: "Electrical Power Removal" (AMM 24-22-00/201).

 S 862-110

 (4)  
Do this task: "Pneumatic Power Removal" (AMM 36-00-00/201).

 D.
Remove the Alternate Solenoid Valve

 S 032-111
 (1)
Disconnect the electrical connector P202 (12) from the valve (8).

 (2)  
Remove four mounting screws (9).

 S 022-112

 (3)  
Remove the alternate solenoid valve (Fig. 201):

 (a)  
Remove the alternate solenoid valve (8).

 (b)  
Put a cover on the opening in the PDU.

 S 032-166
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400
MAINTENANCE MANUAL

 TASK 27-81-03-402-113
 11. Alternate Solenoid Valve Installation
_____________________________________
 A. Parts ~.............................................................................. | AMM | | AIPC | ................. ...........................| | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ...............................................................................| | 201 | 8 | Solenoid Valve (Alternate) | 27-81-03 | 01 | 395 | | | 9 | Screw | | | 315 | | | 9 | Screw | | | 160 | | | 10 | Washer | | | 150 | | | 11 | Packing (O-ring) | | | 320 | | | 11 | Packing (O-ring) | | | 325 | 2......…........…...................................…...........….....…........1
 B. References
 (1)  
AMM 24-22-00/201, Manual Control

 (2)  
AMM 27-81-00/201, Leading Edge Flap System

 (3)  
AMM 36-00-00/201, Pneumatic System

 (4)  
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04, SSM 27-81-05, SSM 27-81-06

 (5)  
WDM 27-51-21, WDM 27-51-22, WDM 27-81-11, WDM 27-81-12, WDM 27-81-21, WDM 27-81-22, WDM 27-81-31, WDM 27-81-32, WDM 27-81-41, WDM 27-81-42, WDM 27-81-81, WDM 27-81-82

 C.
Access

 (1)  
Location Zone
 512 Krueger Flap Inboard, LH
 523 Variable Camber Flap, LH
 525 Variable Camber Flap, LH
 535 Variable Camber Flap, LH
 612 Krueger Flap Inboard, RH
 623 Variable Camber Flap, RH
 625 Variable Camber Flap, RH
 635 Variable Camber Flap, RH

 D.
Procedure

 S 422-114
 (1)  
Install the alternate solenoid valve (Fig. 201):

 (a)  
Remove the cover from the PDU opening.

 (b)  
Install two o-rings (11) in the drive unit hole.

 (c)  
Install the valve in the drive unit.

 (d)  
Install four mounting screws (9) and washers (10).

 (2)  
Install the electrical connector P202 (12) (and clamp, if supplied).

 S 432-115
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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