(d)  
Turn the control wheels counterclockwise to the stop.

 (e)  
Make sure the left aileron position pointers move up to or above the higher scale mark.

 (f)  
Make sure the right aileron position pointers move down to or below the lower scale mark.

 (g)  
Turn the control wheels to the neutral position.

 (h)  
Make sure that the inboard aileron position pointers move approximately to the middle marks.

 (i)  
Make sure that the outboard aileron position pointers move a small distance lower than the middle marks.

 S 865-009
 (7)  
If the hydraulic power is not necessary, do this task: "Remove Hydraulic Power" (AMM 29-11-00/201).

 S 865-010

 (8)  
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 TASK 27-18-00-805-011
 3. Adjustment - Aileron Position Indicating System
_______________________________________________
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 A. Special Tools and Equipment
 (1)
G12001-50 Rig Pin Kit

 B.
References

 (1)
AMM 24-22-00/201, Manual Control

 (2)
AMM 27-51-00/201, Trailing Edge Flap System

 (3)
SSM 27-18-01

 (4)
WDM 27-18-11

 C.
Access

 (1)  
Location Zone 591 Rear Spar to Trailing Edge, LH at Outboard Aileron 573 Rear Spar to Trailing Edge, LH at Inboard Aileron 673 Rear Spar to Trailing Edge, RH at Inboard Aileron 691 Rear Spar to Trailing Edge, RH at Outboard Aileron

SEE A
CONTROL ROD THUMBNUT
CRANK
BRACKET
OUTER RIG PIN HOLE
INNER RIG PIN HOLE
NOTE:LEFT OUTBOARD AILERON POSITION TRANSMITTER SHOWN. OTHER AILERON POSITION TRANSMITTERS SIMILAR.
TRANSMITTER CLAMPING SCREWS TRANSMITTER
Aileron Position Transmitter Adjustment
Figure 501

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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

 (2)  
Access Panel
 591CB Outboard Aileron Access Panel (LO Transmitter)
 573CB Hydraulic Access Panel (LI Transmitter)
 673CB Hydraulic Access Panel (RI Transmitter)
 691CB Outboard Aileron Access Panel (RO Transmitter)

 D.
Procedure

 S 865-012
 (1)  Do this task: "Supply Electrical Power" (AMM 24-22-00/201).
 S 865-029
 WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE LE AND TE
_______ FLAPS AND FLAP DRIVE MECHANISMS BEFORE YOU MOVE THE FLAP CONTROL LEVER. WITH HYDRAULIC POWER REMOVED, THE FLAPS WILL MOVE AUTOMATICALLY BY ELECTRICAL POWER WHEN YOU MOVE THE FLAP CONTROL LEVER. THIS CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)
Do this task: "Trailing Edge Flap Retraction" (AMM 27-51-00/201).

 S 865-026

 (3)  
Do this task: "Trailing Edge Flap Deactivation" (AMM 27-51-00/201).

 S 865-015

 (4)  
Make sure the ailerons are in the neutral position.

 S 865-028

 (5)  
Make sure these circuit breakers are closed:

 (a)  
P6, Main Power Distribution Panel
 1) 6J21, SPLR/ALRN IND
 2) 6J20, SPLR/ALRN SENSOR

 S 015-018
 (6)  Open the applicable access panel:
 591CB, LO Transmitter
 573CB, LI Transmitter
 673CB, RI Transmitter
 691CB, RO Transmitter

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