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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 ELEVATOR POSITION INDICATING SYSTEM - ADJUSTMENT/TEST
_____________________________________________________
 1.  General_______
 A.  This procedure contains the operational test and the adjustment procedure for the position indicating system for the elevator.
 TASK 27-38-00-715-002
 2.  Operational Test - Elevator Position Indicating System______________________________________________________
 A.  General
 (1)  
The operational test of the position indicating system for the elevator does not use ground support equipment. The test lets you monitor the operation of the system and makes sure that it operates smoothly through full travel.

 B.  
References

 (1)  
24-22-00/201, Electrical Power - Control

 (2)  
29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 C.  
Access

 (1)  
Location Zones
 211/212 Control Cabin

 D.
Position Indicating System Operational Test for the Elevator (Fig. 501)

 S 865-003
 (1)  
Make sure these circuit breakers on the overhead panel, P11, are closed:

 (a)  
EICAS (6 locations)

 (b)  
11H17, FLT CONT SHUTOFF TAIL LEFT

 (c)  
11H18, FLT CONT SHUTOFF TAIL CTR

 (d)  
11H28, FLT CONT SHUTOFF TAIL RIGHT

 (e)  
11J13, ELEVATOR POS LEFT

 (f)  
11J21 or 11J22, ELEV POS RIGHT

 (g)  
11K9, LEFT ENGINE OIL PRESS

 (h)  
11K35, RIGHT ENGINE OIL PRESS

 (2)  
Supply electrical power (Ref 24-22-00).

 S 865-005

 (3)  
Make sure that the R, L, and C FLT CONTROL SHUTOFF switches on the right side panel, P61, are at the ON position.

 S 865-004
 S 865-006
 WARNING: KEEP PERSONS AND EQUIPMENT AWAY FROM ALL CONTROL SURFACES WHEN
_______ HYDRAULIC POWER IS SUPPLIED. AILERONS, ELEVATORS, RUDDER, FLAPS, SLATS, SPOILERS, AND STABILIZER ARE FULLY POWERED SURFACES. INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
 (4)  Pressurize the left, right, and center hydraulic systems (Ref 29-11-00).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 

GEN FIELD MANUAL RESET

GEN USE ONLY
RIGHT SIDE PANEL, P61
TICK MARK (EXAMPLE)
ELEVATOR
EICAS SCREEN POSITION ELEVATOR
INDICATORS POSITION

AIL ELEV AILINDICATOR
SEE
ELEVATOR POSITION INDICATORSEICAS DISPLAY SELECT PANEL, P9

Elevator Position Indicating System Components
Figure 501

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 ú  01  Page 502
 ú  Sep 20/90 

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

757
MAINTENANCE MANUAL

STABILIZER BALLSCREW ACTUATOR
A

1 TO USE THE GAGE ASSEMBLY TO SET DIMENSION B TO
15.89 |0.01 INCHES, DO THE STEPS THAT FOLLOW:
1.
 PUT THE GAGE ASSEMBLY AGAINST THE BALLSCREW
SO THAT THE BOLT HEADS ARE ON THE SHOULDERS
OF THE UPPER AND LOWER STOPS

2.
 MAKE SURE THAT THE FEELER BLADE CAN BE PUT
BETWEEN THE BOLT HEAD OF THE GAGE ASSEMBLY AND
ON THE SHOULDER OF THE UPPER STOP
(THIS WILL PREVENT PRELOADING)

 

Measurement of Stabilizer Dimension B
Figure 502

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 ALL  ú ú 01 Page 503 ú Sep 20/90
　
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