(2)  
The installation of the rig pins E-1, E-2, and the rig pin M520392-4C at the position transmitter

 (3)  
The adjustment of the elevator position transmitter.

 B.  
The adjustment is the same for the inboard or the outboard elevator position transmitter.

 C.  
AIRPLANES WITH IDS SOFTWARE 685-2265-005 (PW), OR 995-0017-003 (GE), OR 995-0054-002 (RR); The elevator position indicators on the EICAS status page cannot move all the way to the full scale marks when the elevators are at the full up or down travel.

 TASK 27-38-00-715-001
 2.  Operational Test - Elevator Position Indicating System______________________________________________________
 A.  References
 (1)  
AMM 24-22-00/201, Manual Control

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

 (3)  
SSM 27-38-01

 (4)  
WDM 27-38-11

 B.  
Access

 (1)  
Location Zone
 221 Control Cabin, LH
 222 Control Cabin, RH

 C.  
Procedure

 (1)
Do this task: "Supply Electrical Power" (AMM 24-22-00/201).

 S 865-004

 (2)  
Make sure the FLT CONTROL HYD POWER TAIL switches on the P461 Pilots' Overhead Maintenance Panel are in NORM.

 S 865-002
 S 865-005
 WARNING: MOVE ALL PERSONS AND EQUIPMENT AWAY FROM THE FLIGHT CONTROL
_______ SURFACES BEFORE YOU PRESSURIZE THE HYDRAULIC SYSTEMS. THE FLIGHT CONTROL SURFACES CAN MOVE QUICKLY AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3) Do this task: "Supply Hydraulic Power" (AMM 29-11-00/201).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-38-00
 ALL  ú ú 03 Page 501 ú Feb 18/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 865-006
 (4)  
Make sure the pointers on the surface position display of the EICAS status page are approximately at the mid-scale mark.

 S 715-007

 (5)  
Do the operational test of the elevator position indicating system:

 (a)  
Push the control column full forward. 1) Make sure the pointers move to the lower scale mark.

 (b)  
Pull the control column full aft. 1) Make sure the pointers move to the higher scale mark.

 (c)  
Release the control column.

 1)  Make sure the pointers move approximately to the mid-scale mark.
 S 865-008
 (6)  
If the hydraulic power is not necessary, do this task: "Remove Hydraulic Power" (AMM 29-11-00/201).

 S 865-009

 (7)  
If the electrical power is not necessary, do this task: "Remove Electrical Power" (AMM 24-22-00/201).

 TASK 27-38-00-805-010
 3.  Adjustment - Elevator Position Indicating System________________________________________________
 A.  Special Tools and Equipment
 (1)  
G12001-50 - Rig Pin Kit

 (2)  
MS20392-4C Rig Pin or equivalent diameter rod (0.309-0.311 inches)

 B.  
References

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

 (2)  
AMM 27-38-01/401, Elevator Position Transmitter

 (3)  
AMM 29-11-00/201, Main Hydraulic Supply System

 (4)  
AMM 34-11-00/201, Pitot Static System

 (5)  
SSM 27-38-01

 (6)  
WDM 27-38-11

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-38-00
 ALL  ú ú 01 Page 502 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 C. Access
 (1)  
Location Zone 334 Horizontal Stabilizer Rear Spar to Trailing Edge, LH 344 Horizontal Stabilizer Rear Spar to Trailing Edge, RH

 (2)  
Access Panel 334KBL Horizontal Stabilizer Access Panel, Trailing Edge, LH for Left Outboard Transmitter 334GBL Horizontal Stabilizer Access Panel, Trailing Edge, LH for Left Inboard Transmitter 334GBR Horizontal Stabilizer Access Panel, Trailing Edge, RH for Right Inboard Transmitter 334KBR Horizontal Stabilizer Access Panel, Trailing Edge, RH
　
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