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 27-11-13
 ALL  ú ú 03 Page 218 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-062
 (3)  
Set the FLT CONTROL HYD POWER - WING VALVE switches No. 1, 2, 3 and 4 on the P461 Pilot's Overhead Maintenance Panel to NORM.

 S 862-064

 (4)  
Do this task: "Hydraulic System Pressurization" (Ref 29-11-00/201).

 S 862-065

 (5)  
Operate the aileron a minimum of two times.

 S 792-094

 (6)  
Examine the compensator (38) for leaks.

 G.
Put the Airplane Back To Its Usual Condition

 S 862-066
 (1)  
Do this task: Hydraulic System Depressurization"
 (Ref 29-11-00/201).

 S 612-067

 (2)  
Do this task: "Hydraulic Reservoirs Servicing" (Ref 12-12-01/301).

 S 862-068

 (3)  
Do this task if electrical power is not necessary: "Electrical Power Removal" (Ref 24-22-00/201).

 S 412-069

 (4)  
Close the access panel on the lower wing surface.

 S 092-070

 (5)  
Remove the safety device and safety harness installed on the receptacle on the wing upper surface.

 TASK 27-11-13-002-071
 8.  Outboard Aileron Power Control Package Check Valve Removal__________________________________________________________
 A. Special Tools and Equipment
 (1)  OHME65B80518-1 Sling Assembly Hoist
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 03 Page 219 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 (2)  
6ME65B02100-1 Outboard Aileron Lock

 (3)  
24MIT65B00002 Safety Device for Wing and Stabilizer

 B.
References

 (1)  
06-09-08/201, Wing Access Doors and Panels

 (2)  
24-22-00/201, Manual Control

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

 (4)  
IPC 27-11-13, Fig. 5

 C.
Access

 (1)  
Location Zone
 592 Outboard Aileron, LH
 692 Outboard Aileron, RH

 (2)  
Access Panel
 591AB Outboard Aileron, Lower Wing Surface, LH
 591BB Outboard Aileron, Lower Wing Surface, LH
 591CB Outboard Aileron, Lower Wing Surface, LH
 591DB Aileron Actuator, Lower Wing Surface, LH
 591EB Outboard Aileron, Lower Wing Surface, LH
 591FB Outboard Aileron, Lower Wing Surface, LH
 591AT Aileron Actuator, Upper Wing Surface, LH
 691AB Outboard Aileron, Lower Wing Surface, RH
 691BB Outboard Aileron, Lower Wing Surface, RH
 691CB Outboard Aileron, Lower Wing Surface, RH
 691DB Aileron Actuator, Lower Wing Surface, RH
 691EB Outboard Aileron, Lower Wing Surface, RH
 691FB Outboard Aileron, Lower Wing Surface, RH
 691AT Aileron Actuator, Upper Wing Surface, RH

 D.
Prepare for Removal

 (1)
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).

 S 862-073

 (2)  
Set the FLT CONTROL HYD POWER - WING VALVE switches No. 1, 2, 3 and 4 on the P461 Pilot's Overhead Maintenance Panel to SHUTOFF.

 S 862-072
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-11-13
 ALL  ú ú 03 Page 220 ú Feb 10/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 862-075
 (3)  
For the applicable system, open these circuit breakers and attach DO-NOT-CLOSE tags:
　
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