(4)  
The installation of the drive motor

 (5)  
The installation of the electrical connector

 (6)  
The removal of the landing gear door safety locks.

 TASK 27-51-17-004-001
 2.  Inboard Flap Alternate Drive Motor Removal__________________________________________
 A.  References
 (1)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (2)  
AMM 32-00-30/201, Landing Gear Door Locks

 (3)  
AIPC 27-51-09, Fig. 1

 B.  
Access

 (1)  
Location Zones
 137 Body Landing Gear Wheel Well, LH

 C.  
Prepare for the Removal

 S 864-030
 (1)
Do this task to depressurize hydraulic systems No. 1 and 4: "Hydraulic System Depressurization" (AMM 29-11-00/201).

 S 864-032

 (2)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P6, Main Power Distribution Panel
 1) 6L20, TE FLAP ELEC CONT INBD

 (b)  
P415, Power Distribution Center-Right 1) 415A32, TE FLAP ELEC INBD

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747-400 MAINTENANCE MANUAL
 S 864-034
 (3) Make sure that the landing gear ground locks are installed.
 S 494-036
 WARNING: YOU MUST CAREFULLY DO THE STEPS IN THE TASK BELOW TO INSTALL
_______ THE DOOR LOCKS ON THE LANDING GEAR DOORS. THE DOORS CAN CLOSE QUICKLY IF YOU DO NOT INSTALL THE DOOR LOCKS CORRECTLY. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (4)  
Do this task: "Installation of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

 D.
Remove the Inboard Drive Motor

 S 034-008
 (1)  
Disconnect the electrical connector (11) from the drive motor (12) (Fig. 401).

 S 024-009

 (2)  
Remove the drive motor:

 (a)  
Remove the bolts (9, 10 and 14), washers (8), and the nut (13) which attach the drive motor (12) to the flap power package.

 (b)  
Remove the alternate drive motor from the flap power package.

 (c)  
Remove the adapter plate if installed.

 NOTE: If the replacement motor is the same as the motor that
____ you removed, it is not necessary to remove the adapter plate.
 (d) Put a cover on the opening in the power package.
 TASK 27-51-17-404-027
 3. Inboard Flap Alternate Drive Motor Installation
_______________________________________________
 A. Consumable Materials
 (1)  C00259, Enamel - Primer, Green, BMS 10-11
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747-400
MAINTENANCE MANUAL

Alternate Flap Drive Motor Installation
Figure 401 (Sheet 1)

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747-400 MAINTENANCE MANUAL
7. BOLT
1. WASHER POWER PACKAGE
5.
 MOTOR

6.
 ELECTRICAL

2. BOLT 1. WASHER CONNECTION 4. NUT
1. WASHER
3. BOLT
OUTBOARD FLAPS ALTERNATE DRIVE MOTOR
B

13. NUT 8. WASHER 14. BOLT POWER PACKAGE
8. WASHER
12. MOTOR
9. BOLT CONNECTION 11. ELECTRICAL 8. WASHER
10. BOLT
INBOARD FLAPS ALTERNATE DRIVE MOTOR
C

Alternate Flap Drive Motor Installation
Figure 401 (Sheet 2)

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