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A
747-400
MAINTENANCE MANUAL

 B. Parts ~.............................................................................. | AMM | | AIPC | ................. ...........................| | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ...............................................................................| | 201 | 48 | Screw | 27-81-03 | 01 | 300 | | | 49 | Rectifier | | | 270 | | | 50 | Screw | | | 285 | | | 51 | Washer | | | 280 | | | 52 | Nut | | | 275 | | | 54 | Solenoid Valve | | | 270 | | | 55 | Packing (O-ring) | | | 305 | 2......…........…...................................…...........….....…........1
 C. References
 (1)  
AMM 24-22-00/201, Manual Control

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

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AMM 36-00-00/201, Pneumatic System

 (5)  
SSM 27-81-01, SSM 27-81-02, SSM 27-81-03, SSM 27-81-04, SSM 27-81-05, SSM 27-81-06

 (6)  
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

 D.
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

 E.
Procedure

 S 422-095
 (1)  
Install the rectifier and primary solenoid valve assembly (Fig. 201):

 (a)  
Remove the cover from the PDU opening.

 (b)  
Install two O-rings (55) in the drive unit.

 (c)  
Install the primary solenoid valve (54) with four mounting screws (48).

 (d)  
Install the rectifier with two mounting screws (50), washers (51) and nuts (52).

 S 432-096
 (2)  Install the electrical connector (53) on the rectifier (and electrical connector clamp, if it is available).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 S 092-097
 WARNING:_______ YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO REMOVE THE
 LE FLAP SAFETY LOCKS.  THE LE FLAPS CAN MOVE QUICKLY IF YOU DO
 NOT DO THE STEPS CORRECTLY.  THIS CAN CAUSE INJURY TO PERSONS

 OR DAMAGE TO EQUIPMENT.
 (3)  
Do this task: "Safety Lock Removal and Leading Edge Flap Activation" (AMM 27-81-00/201).

 S 862-098

 (4)  
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 862-099

 (5)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P6 Main Power Distribution Panel 1) 6L21 LE FLAP ELEC CONT GRP B DRIVE 1 2) 6L22 LE FLAP ELEC CONT GRP B DRIVE 2 3) 6L23 LE FLAP ELEC CONT GRP B DRIVE 3 4) 6L24 LE FLAP ELEC CONT GRP A DRIVE 4 5) 6E3 PRIM LE FLAP CONT GRP A AC 6) 6E4 PRIM LE FLAP CONT GRP A DC 7) 6E5 PRIM LE FLAP CONT GRP B AC 8) 6E6 PRIM LE FLAP CONT GRP B DC

 (b)  P7 Overhead Circuit Breaker Panel 1) 7C10 FLT CONT ELEC 2L-AC 2) 7C11 FLT CONT ELEC 2L-DC 3) 7C12 FLT CONT ELEC 1L-AC 4) 7C13 FLT CONT ELEC 1L-DC 5) 7C14 FLT CONT ELEC 1R-AC 6) 7C15 FLT CONT ELEC 1R-DC 7) 7C16 FLT CONT ELEC 2R-AC 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

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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