S 426-004
 (3)  Do this task: "Outboard Elevator Power Control Package Installation" (AMM 27-31-08/201) to assemble the PCP actuator to the attachment fitting.
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747-400 MAINTENANCE MANUAL
 ELEVATOR INDEX PLATE - REMOVAL/INSTALLATION
___________________________________________
 1.  General_______
 A.  There are two tasks in this procedure. The first task is the removal of the elevator index plate. The second task is the installation of the elevator index plate. Left and right removal/installations are the same.
 TASK 27-31-09-024-021
 2.  Elevator Index Plate Removal____________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

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

 (3)  
AMM 27-31-00/501, Elevator Control System

 B.  
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

 C.  
Prepare for Removal

 S 864-026
 (1)  Supply Electrical Power (AMM 24-22-00/201).
 S 864-023
 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.
 (2)  
Supply hydraulic power to hydraulic system No. 2 and 3 (AMM 29-11-00/201).

 S 864-011

 (3)  
Align the horizontal stabilizer with the index mark (Fig. 401 View B-B).

 S 864-012

 (4)  
Set the STAB TRIM HYD NO. 2 and 3 switches on control stand to OFF position.

 (5)  
Move the control column to neutral position.

 S 864-014

 (6)  
Make sure that the inboard elevators trailing edge aligns with index plate within 0.04 inches.

 S 864-013
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MAINTENANCE MANUAL

B
A
A
B
SEE A
A
0.20 |0.05 INCH
STRUCTURE STABILIZER  STABILIZER INDEX BRACKET (TYP) 
PLATE INDEX  A-A  C  (4 PLACES) IN SKIN RIVET HOLE 
INDEX MARK 
INBOARD ELEVATOR TRAILING EDGE  MARK INDEX  INDEX PLATE 
BACK DRILLED INDEX PLATE MOUNTING HOLES  C  SKIN STRUCTURE 
B-B  C-C 
Elevator Index Plate Figure 401 

E99595
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MAINTENANCE MANUAL

 S 864-015
 (7)  
If it is not align with the index mark within 0.04 inch, adjust the inboard elevator neutral position (AMM 27-31-00/501).

 S 864-016

 (8)  
Push the control column full forward.

 S 864-017

 (9)  
Rotate the elevator trailing edge away of index plate.

 S 864-018

 (10)
 Set the FLT CONTROLS HYD POWER RUDDER ELEVATOR systems switches No. 1, 2, 3, and 4 on pilots' overhead panel P5 to OFF position.

 S 864-019

 (11)
 Open these circuit breakers and attach DO-NOT-CLOSE tags:

 (a)  
P7, Overhead Circuit Breaker Panel
　
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