S 864-020
 (12)
 Remove Hydraulic Power (AMM 29-11-00/201).

 D.
Remove Elevator Index Plate

 S 024-007
 (1)
Remove the rivets which connect the index plate to fuselage.

 S 024-008

 (2)  
Remove the index plate.

 TASK 27-31-09-404-022
 3. Elevator Index Plate Installation
_________________________________
 A. Consumable Materials
 (1)  
Sealant - BMS 5-95

 B.
References

 (1)  
AMM 24-22-00/201, Manual Control

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

 C.
Access

 (1)  
Location Zone
 311 Area Aft of Pressure Bulkhead, LH
 312 Area Aft of Pressure bulkhead, RH

 (2)  
Access Panel 312A Horizontal Stabilizer Jackscrew Access Door

 D.
Prepare for Removal

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-024
 WARNING: KEEP PERSONS AND EQUIPMENT CLEAR OF THE FLIGHT CONTROL
_______ SURFACES, THE THURST REVERSERS, AND THE LANDING GEAR. THESE COMPONENTS CAN MOVE SUDDENLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Supply hydraulic power to hydraulic system No. 2 and 3
 (AMM 29-11-00/201).

 S 864-002

 (2)  
Set the control column to the neutral position.

 S 864-003

 (3)  
Align the new index plate with elevator trailing edge.

 S 424-004

 (4)  
Mark the location of the new index plate.

 S 424-005

 (5)  
Install the sealant on fuselage.

 S 424-006

 (6)
Install the index plate on the fuselage with rivets and collars.

 E.
Put the airplane back to its initial condition

 S 864-025
 (1)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:

 (a)  
P7, Overhead Circuit Breaker Panel
 1) 7E7, L STAB TRIM S/O VLV
 2) 7E20, R STAB RIM S/O VLV

 S 864-008
 (2)  
Set the FLT CONTROLS HYD POWER RUDDER ELEVATOR systems switches No. 1, 2, 3, and 4 on the pilots' overhead panel P5 to the ON position.

 S 864-007

 (3)  
Set the STAB TRIM HYD No. 2 and 3 switches on the control stand to the NORM position.

 (4)
Remove hydraulic power if it is not necessary (AMM 29-11-00/201).

 S 864-006
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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 ALL  ú ú 01 Page 404 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 864-005
 (5) Remove electrical power if it is not necessary (AMM 24-22-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-31-09
 ALL  ú ú 01 Page 405 ú Jun 10/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 ELEVATOR FEEL COMPUTER - MAINTENANCE PRACTICES
______________________________________________
 1.  General_______
 A.  There are six tasks in this procedure. There is one task each for the removal, the installation, the adjustment, and the operational test of the elevator feel computer. Also, there is one task each for the removal and the installation of the elevator feel computer filter. The procedure has these parts:
 (1)
The preparation for the removal of the elevator feel computer
　
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