1)  Make sure you get an indication of 0.6 |0.1 degree down on the EICAS flight controls maintenance page.

 (c)  
For the inboard aileron, adjust the transmitter body.

 1)  Make sure you get an indication of 0 |0.2 degree on the EICAS flight controls maintenance page.

 (d)  
Tighten the transmitter clamping screws to 5-10 pound-inches.

 S 834-021
 (6)  
If the indication is not in the tolerance, adjust the control rod:

 (a)  
Move the rig pin to the inner hole.

 (b)  
Adjust the control rod.

 (c)  
Install the lockwire on the thumb nut of the control rod.

 S 094-022
 (7)  
Remove the rig pin from the transmitter assembly.

 S 414-023

 (8)  
Close the access panel.

 S 864-024

 (9)  
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

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

 S 864-025
 (10)
 Set all FLT CONTROL HYD POWER WING switches on the P461, Pilots' Overhead Maintenance Panel to NORM.

 (11)
 Do this task: "Trailing Edge Flap Activation" (AMM 27-51-00/201).

 S 864-026

 (12)
 If electrical power is not necessary, do this task:  "Remove Electrical Power" (AMM 24-22-00/201).

 S 864-015
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A
747-400 MAINTENANCE MANUAL
 AILERON/SPOILER SURFACE POSITION DIGITIZER - REMOVAL/INSTALLATION
_________________________________________________________________
 1.  General_______
 A.  There are two task in this procedure. There is one task for the removal and one task for the installation of the aileron/spoiler surface position digitizer (SPD) circuit card YMLA09 (which is referred to as the "card YMLA09"). The procedure has these parts:
 (1)
The removal of the card YMLA09

 (2)
The installation of the replacement card

 (3)
An operational check of the card YMLA09.

AILERON/SPOILER SPD CIRCUIT CARD
ELECTRICAL SYSTEMS CARD FILE A
Aileron/Spoiler Surface Position Digitizer Installation
Figure 401

SEE  A
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A
747-400 MAINTENANCE MANUAL
 B.  The card YMLA09 is in the card file M7603. The card file M7603 is between the wheel well of the nose gear and the fuselage.
 TASK 27-18-02-004-009
 2.  Aileron/Spoiler Surface Position Digitizer Removal (Fig. 401)__________________________________________________
 A.  References
 (1)  
AIPC 27-09-00, Fig. 51

 (2)  
SSM 27-18-01, SSM 27-68-01

 (3)  
WDM 27-09-32, WDM 27-18-11, WDM 27-68-11

 B.  
Access

 (1)  
Location Zone 115 Area between Nose Gear Wheel Well and Fuselage, LH

 C.  
Procedure

 S 864-001
 (1)
Open these circuit breakers and attach DO-NOT-CLOSE tags:

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

 S 024-002
 (2)  
Loosen the card YMLA09 from the card file M7603.

 (a)
Remove the card YMLA09 from the card file M7603.

 TASK 27-18-02-404-010
 3.  Aileron/Spoiler Surface Position Digitizer Installation (Fig. 401)_______________________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control
　
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