S 862-040
 (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 862-042

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

 S 862-043

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

 S 792-096

 (6)  
Examine the filter housing (29) for leaks.

 G.
Put the Airplane Back to Its Usual Condition

 S 862-044
 (1)  
Do this task: "Hydraulic System Depressurization"
 (Ref 29-11-00/201).

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

 S 862-046

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

 S 612-045
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747-400 MAINTENANCE MANUAL
 S 412-047
 (4)  
Close the access panel on the lower wing surface.

 S 092-048

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

 TASK 27-11-13-002-049
 6.  Outboard Aileron Power Control Package Compensator Removal__________________________________________________________
 A. Special Tools and Equipment
 (1)  
OHME65B80518-1 Sling Assembly Hoist

 (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

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747-400 MAINTENANCE MANUAL
 D. Prepare for Removal
 S 862-050
 (1)  
Do this task: "Supply Electrical Power" (Ref 24-22-00/201).

 S 862-051

 (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 862-053

 (3)  
For the applicable system, open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P180 DC Power Distribution Panel
 1) 180H7 LATERAL CONT VALV SYS 1
 2) 180E6 LATERAL CONT VALV SYS 2
 3) 180H22 LATERAL CONT VALV SYS 3
 4) 180E21 LATERAL CONT VALV SYS 4

 S 862-054
 (4)  
Do this task: "Hydraulic System Depressurization"
 (Ref 29-11-00/201).

 S 012-055

 (5)  
Open the access panel below the power control package.

 S 492-056

 (6)  
Attach the safety device to the receptacle on the wing upper surface, forward of the power control package..
　
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