(2)  
Control Column Lock Equipment - A27021-69

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 27-31-00
 ALL  ú ú 10 Page 582F ú May 28/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A

757
MAINTENANCE MANUAL

 (3)  
Control Wheel Adapter Equipment -A27021-97 or -98

 (4)  
Scale (linear measurements for the stabilizer
 ballscrew) - B27039-1

 (5)  
Rigging Block, Elevator Aft Quadrant:

 (a)  
B27023-48 (Elevator is at Neutral)

 B.
References

 (1)  
AMM 06-42-00/201, Empennage Access Doors and Panels

 (2)  
AMM 24-22-00/201, Electrical Power - Control

 (3)  
AMM 27-31-15/401, Elevator Aft Quadrants

 (4)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

 C.
Prepare for the Test

 S 865-365
 (1)  
Supply electrical power (AMM 24-22-00/201).

 S 215-366

 (2)  
Make sure that these circuit breakers on the overhead panel, P11, are closed:

 (a)  
EICAS (6 locations)

 (b)  
11C12, STAB TRIM SHUTOFF LEFT

 (c)  
11C13, STAB TRIM SHUTOFF RIGHT

 (d)  
11H17, FLT CONT SHUTOFF TAIL LEFT

 (e)  
11H18, FLT CONT SHUTOFF TAIL CTR

 (f)  
11H28, FLT CONT SHUTOFF TAIL RIGHT

 (g)  
11K9, LEFT ENGINE OIL PRESS

 (h)  
11K35, RIGHT ENGINE OIL PRESS

 S 015-367
 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.
 (3)  
Open the access door for the forward stabilizer compartment, 311AL (AMM 06-42-00/201).

 S 215-368

 (4)  
Make sure that the L, R, and C FLT CONTROL SHUTOFF switches on the right side panel, P61, are at the ON position.

 S 215-369

 (5)  
Make sure that the RIGHT and CENTER STAB TRIM SHUTOFF valve switches on the control stand panel, P10, are at the NORM position.

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 27-31-00
 ALL  ú ú 11 Page 582G ú May 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
 S 865-370
 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.
 (6)  
Pressurize the left, right, and center hydraulic systems
 (AMM 29-11-00/201).

 S 865-371

 (7)  
Move the horizontal stabilizer until Dimension B on the stabilizer ballscrew actuator is 15.89 | 0.01 inches (403.6 | 0.3 mm) (approximately 6 units on the stabilizer position indicator) (Fig. 502).

 S 865-372

 (8)  
Put the RIGHT and CENTER STAB TRIM SHUTOFF valve switches on the P10 panel to the CUTOUT position.

 S 865-373

 (9)  
Open these circuit breakers on the P11 panel and attach DO-NOT-CLOSE tags:

 (a)  
11B19 or 11A19, STAB TRIM ALT (IF INSTALLED)

 (b)  
11C12, STAB TRIM SHUTOFF LEFT

 (c)  
11C13, STAB TRIM SHUTOFF RIGHT

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

 (e)  
11H20, STAB TRIM CONT R

 D.
Elevator Column and Quadrant Override Test

 S 215-200
 (1)  
Make sure that the left, right, and center hydraulic systems are pressurized (AMM 29-11-00/201).

 S 215-362

 (2)  
Make sure that the horizontal stabilizer is at 6 units of trim on the stabilizer position indicator (the stabilizer B dimension is approximately 15.89 inches (403.6 mm)).
　
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