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 NOTE: Shake the control columns to make sure that they are at
____ neutral. 1) If rig pin E/ST7 cannot be freely put, make sure that the mechanisms that follow are adjusted correctly:
 NOTE: Other components and mechanisms refer to rig pin
____ E/ST7 when they are adjusted. If rig pin E/ST7 cannot be freely put in the aft quadrant indexer, other mechanisms can be incorrectly adjusted.
 a) Feel and centering unit mechanical linkage and neutral
 shift transducers b) Control cables c) PCA input control rods d) Autopilot servo (Ref 22-12-01).
 (b)  
The elevator control cables are adjusted correctly if the conditions that follow can occur at the same time: 1) Rig pin E/ST7 is installed, 2) Rig pin E/ST6 can be freely put in the base of the control

 column (Fig. 504) 3) The cable tension regulator scale position is correct for the ambient temperature (Fig. 504).

 (c)  
The input rods for the PCA are adjusted correctly if the conditions that follow can occur at the same time: 1) Rig pin E/ST7 is installed 2) Rig pins E/ST8 and E/ST9 (Fig. 509) can be freely put in

 the middle PCAs.

 (d)  
The PCA centering springs are adjusted correctly if the conditions that follow can occur at the same time: 1) Rig pins E/ST8 and E/ST9 are installed 2) The tangent points of the PCA centering springs are aligned

 (Fig. 509).
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A

(e)

(f)

(g)

(h)

(i)

(j)

757 MAINTENANCE MANUAL
The elevator PCAs are adjusted correctly if the conditions that
 follow can occur at the same time:
 1)  Rig pin E/ST7 is installed
 2)  The left, right, and center hydraulic systems are pressurized
 3)  The upper surface of the left and right elevator trailing edge is less than 0.15 inch (3.8 mm) from the locating hole on the index plate (Fig. 505).
The elevator position transmitters are adjusted correctly if
 the conditions that follow can occur at the same time:
 1)  The control columns are in the neutral position (shake the control columns to make sure they are in the neutral position)
 2)  The left, right, and center hydraulic systems are pressurized
 3)  The left and right elevator position indicators approximately align with the middle tick mark on the EICAS display
 4)  The elevator position indicators are less than one-half the height of an indicator arrow away from each other.
The elevator position transmitters are adjusted correctly if
 the conditions that follow can occur at the same time:
 1)  Operate the captain's control column through its full fore and aft travel range
 2)  The elevator position indicators on the EICAS display follow the movement of the control column
 3)  The elevator position indicators are less than one-half the height of an indicator arrow away from each other.
The elevator feel computer is adjusted correctly if rig pin
 E/ST11 (Fig. 508) can be freely put in the elevator feel
 computer.
The elevator PCAs are adjusted correctly if the elevators
 operate as follows:
 1)  The left and right elevator trailing edges move up and down together at the same rate,
 2)  The elevators are less than 0.15 inch (3.8 mm) away from each other at full elevator travel (Fig. 505),
 3)  The elevators stop at the same position when the control column is held at a position between the full travel stops.
The upper control rod for the elevator feel and centering unit
 is adjusted correctly if the conditions that follow can occur
 at the same time:
 1)  The control columns are at the neutral position
 2)  The left, right, and center hydraulic systems are pressurized
 3)  The horizontal stabilizer is at 2 units of trim on the stabilizer position indicators (Fig. 501)
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