(c)  
11C13, STAB TRIM SHUTOFF RIGHT

 (d)  
11H11 or 11C05, STAB TRIM CONT L

 (e)  
11H20, STAB TRIM CONT R

 S 415-047
 WARNING: STAY OFF THE SERVICE ACCESS DOOR, 311AL, AND THE ACCESS DOOR
_______ FOR THE CONTROLS BAY, 313AL. YOUR WEIGHT CAN CAUSE THE SPRING-LOADED LATCHES TO RELEASE. IF YOU FALL THROUGH THE DOOR, INJURY CAN OCCUR.
 (7)  
Open the forward stabilizer compartment access door, 311AL
 (Ref 06-42-00).

 G.  
AIRPLANES WITH STAB TRIM LEVERS ON THE CONTROL STAND; Limit Switch and Position Transmitter Module and Travel Limit Mechanism Adjustment (Fig. 502)

 S 825-048
 (1)  
Adjust the tension in cables SL and SP to 50 | 5 lbs (222 +/- 22 newtons). such that rig pins E/ST1, E/ST3, E/ST4, and E/ST5 can be installed freely.

 S 095-049

 (2)  
Remove rig pins E/ST1, E/ST3, E/ST4, and E/ST5.

 S 865-050

 (3)  
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P11 panel:

 (a)  
11C13, STAB TRIM SHUTOFF RIGHT

 S 865-051
 (4)  Put the RIGHT STAB TRIM SHUTOFF valve switch on the P10 panel to NORM.
 S 865-052
 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.
 (5)  Pressurize the right hydraulic system (Ref 29-11-00).
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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A

757
MAINTENANCE MANUAL

 S 865-053
 CAUTION: KEEP TO A MINIMUM THE NUMBER OF TIMES THE STOP LUGS HIT EACH
_______ OTHER. DAMAGE TO EQUIPMENT CAN OCCUR.
 (6)  
Use the STAB TRIM control levers to move the horizontal stabilizer in the airplane nose up direction (stabilizer leading edge down).

 S 215-054

 (7)  
Make sure that the travel limit mechanism stops the horizontal stabilizer when the stop lugs on the lower end of the ballnut are between 0.16 and 0.60 of a turn away from the stop lugs on the upper flange of the gearbox.

 NOTE: One turn of the ballnut is equivalent to 0.625 inch
____
 (15.87 mm) of axial movement along the ballscrew.
 S 825-055
 (8)  
If the above condition is not correct, adjust the turnbuckles on cables SLA and SLB until the condition is correct.

 S 865-056

 (9)  
Move the horizontal stabilizer in the airplane nose down direction (stabilizer leading edge up) until it is stopped by the travel limit shutoff.

 S 215-057

 (10)
 Make sure that the stops on the upper end of the ballscrew are between 0.16 and 0.60 of a turn away from the stop lugs on the upper end of the ballnut.

 S 825-058

 (11)
 If the above condition is not correct, adjust the turnbuckles on cables SLA and SLB until the condition is correct.

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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

757
MAINTENANCE MANUAL

 S 825-059
 (12) Adjust the turnbuckles on cables SLA and SLB until the conditions that follow are correct at the same time:
 (a)  Use the STAB TRIM control levers to move the horizontal
 stabilizer in the airplane nose up direction (stabilizer
 leading edge down).
 (b)  Make sure that the travel limit mechanism stops the horizontal
 stabilizer when the stop lugs on the lower end of the ballnut
 are between 0.16 and 0.60 of a turn away from the stop lugs on
 the upper flange of the gearbox.
 NOTE:____ One turn of the ballnut is equivalent to 0.625 inch
 (15.87 mm) of  axial movement along the ballscrew.
　
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