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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

HYDRAULIC LINES3. 
4. ADAPTER  CASE DRAIN2. 
1. REDUCER 
14. O-RING 
11. 13. WASHER BOLT 
DRIVE MOTOR 6. 5. 7. 8. O-RING NUT BACKUP RING O-RING 9. HYDRAULIC 

OUTBOARD FLAP HYDRAULIC MOTOR B  10. 11. 12. BOLT WASHER NUT 
Flap Hydraulic Motor Installation Figure 401 (Sheet 2) 

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A
747-400 MAINTENANCE MANUAL
 S 034-013
 (2)  
Disconnect the hydraulic lines (3) and the case drain (2) from the drive motor.

 (a)  
Install plugs in all of the hydraulic lines and caps in all of the ports on the drive motors.

 S 024-004
 (3)  Remove the drive motor:
 CAUTION: MAKE SURE YOU DO NOT HIT THE EXTERNAL SHAFT WHEN YOU
_______ REMOVE THE DRIVE MOTOR. YOU CAN CAUSE DAMAGE TO THE SHAFT SEAL AND CAUSE THE MOTOR TO LEAK.
 (a)  
Remove the bolts (10 and 13), washers (11), and nuts (12) which attach the drive motor (9) to the flap power package.

 (b)  
Remove the drive motor from the airplane.

 (c)  
Put a cover on the opening in the power package to prevent contamination.

 TASK 27-51-16-404-005
 3. Flap Hydraulic Drive Motor Installation (Fig. 401)
_______________________________________
 A. Consumable Materials
 (1)  
D00567 Lubricant - Skydrol Assembly Lube

 (2)  
D00149 Fluid - Hydraulic, Fire Resistant, BMS 3-11

 (3)  
D00633 Grease - BMS 3-33 (recommended)

 (4)  
D00013 Grease - MIL-G-23827 (alternative)

 B.
Parts

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MAINTENANCE MANUAL

 ~.............................................................................. | AMM | | AIPC | ................. ............................ | FIG | ITEM | NOMENCLATURE | SUBJECT | FIG | ITEM | ................................................................................ | 401 | 1 | Reducer (Union) (Inboard Motor) | 27-51-09 | 01 | 210 | | | | Reducer (Union) (Outboard Motor) | | 03 | 205 | | | 4 | Adapter (Inboard Motor) | | 01 | 220 | | | | Adapter (Outboard Motor) | | 03 | 215 | | | 5 | Nut (Inboard Motor) | | 01 | 235 | | | | Nut (Outboard Motor) | | 03 | 230 | | | 6 | Packing (O-Ring) (Inboard Motor) | | 01 | 230 | | | | Packing (O-Ring) (Outboard Motor) | | 03 | 220 | | | 7 | Ring (Inboard Motor) | | 01 | 240 | | | | Ring (Outboard Motor) | | 03 | 235 | | | 8 | Packing (O-Ring) (Inboard Motor) | | 01 | 225 | | | | Packing (O-Ring) (Outboard Motor) | | 03 | 225 | | | 9 | Inboard Motor | | 01 | 245 | | | | Outboard Motor | | 03 | 240 | | | 10 | Bolt (Inboard Motor) | | 01 | 196 | | | | Bolt (Outboard Motor) | | 03 | 196 | | | 11 | Washer Inobard Motor) | | 01 | 198 | | | | Washer (Outboard Motor) | | 03 | 198 | | | 12 | Nut (Inboard Motor) | | 01 | 200 | | | | Nut (Outboard Motor) | | 03 | 199 | | | 13 | Bolt (Inboard Motor) | | 01 | 197 | | | | Bolt (Outboard Motor) | | 03 | 197 | | | 14 | Packing (O-Ring) | | 01 | 215 | | | | Packing (O-Ring) | | 03 | 210 | 2......…........…...................................…..........….....….........1
 C. References
 (1)  
12-12-01/301, Hydraulic Systems

 (2)  
29-11-00/201, Main Hydraulic Supply System

 (3)  
32-00-30/201, Landing Gear Door Locks

 D.
Access

 (1)  
Location Zone
 137 Body Landing Gear Wheel Well, LH
 138 Body Landing Gear Wheel Well, RH

 E.
Procedure

 S 424-006
 (1)  
Install the flap hydraulic drive motor:

 (a)  
　
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