757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 3(39)

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 7)  Do the same procedure to make sure the right elevator up and down overtravels are correct as was done for the left elevator.
 NOTE: Overtravel must be larger than 0.50 inch (12.7 mm).
____ If the elevator overtravel is not correct, do the procedure to adjust the elevator aft quadrant stops. After the stops are adjusted, do the steps to make sure that the elevator overtravel is correct again.
 8) Connect the left and right output control rods to the aft quadrant output arms. 9) Install the four PCA centering springs (2 on each elevator)
 NOTE: Do not loosen the support clips on the centering
____ springs. If you loosen the clips, adjustment will be necessary.
 (e)  
Remove the pressure from the left hydraulic system (AMM 29-11-00/201).

 J.  
Elevator Asymmetry Limits Test

 (1)
Do the steps that follow to prepare for the asymmetry limits test:

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MAINTENANCE MANUAL

 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.
 (a)  
Pressurize the left, right, and center hydraulic systems (AMM 29-11-00/201).

 (b)  
Make sure that Dimension B on the stabilizer ballscrew actuator is 15.89 | 0.01 inches (403.6 | 0.3 mm) (Fig. 502).

 (c)  
Shake the captain's control column to make sure that the control column is in the neutral position (Fig. 505).

 (d)  
Install the aft quadrant rigging block (Elevator is at 5 Degrees Up) in the first officer's aft quadrant (Fig. 511).

 NOTE: Do not use rig pins to block the aft quadrant.
____
 (e)  Measure the distance from the upper surface of the elevator trailing edge to the center of the locating hole in the index plate (Fig. 505).
 NOTE: Use the same procedure to measure all elevator distances
____
 during the asymmetry limit test.

 (f)  Make sure that the distance is 5.00 to 5.75 inches
 (127.0 to 146.1 mm) for the left and right elevators.
 (g)  Open the access door for the aft stabilizer compartment, 313AL (AMM 06-42-00/201).
 S 725-115
 (2)  
Do the steps that follow for the asymmetry limits (actuator retracted) test:

 (a)  
Make sure that the asymmetry limiter actuator is fully retracted.

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MAINTENANCE MANUAL

 (b)  
Pull the captain's control column aft until the elevator stops.

 (c)  
Measure and write down the distance of the left and right elevator from the center of the index plate locating hole.

 (d)  
Calculate the difference (from the measured distances written down before) between the position of the left elevator when the control column is at neutral and when it is pulled aft.

 (e)  
Calculate the difference (from the measured distances written down before) between the right elevator position when the control column is at neutral and when it is pulled aft.

 (f)  
Calculate the difference between the difference for the right elevator and the difference for the left elevator.

 (g)  
Make sure the difference is between 19.90 and 22.50 inches

 (505.5 and 571.5 mm).
 (h)  
Push the captain's control column forward until the left elevator stops.

 (i)  
Measure and right down the distance of the left and right elevator positions from the center of the locating hole in the index plate.

 (j)  
Add the dimension for the left elevator with the control column forward to the dimension for the control column at neutral.
　
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