S 495-030
(10)
Attach DO-NOT-OPERATE tags to the aileron trim switches on the P8 panel.
S 225-031
(11)
Make sure that the aileron trailing edge aligns with the TE-flap trailing-edge. A tolerance of | 0.06 inch (+/- 1.5 mm) is permitted.
NOTE: Compare the top surfaces of the aileron and flap trailing
____ edges to measure this dimension.
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757 MAINTENANCE MANUAL
S 825-032
(12)
To adjust the left aileron position indicator, make sure that rig pins A1 and A3 can be easily installed. Remove rig pins A1 and A3.
S 825-033
(13)
To adjust the right aileron position transmitter, make sure that rig pins A2 and A4 can be easily installed. Remove rig pins A2 and A4.
G.
Do the Aileron Position Indicating System Adjustment that follows:
NOTE: Three procedures are supplied to adjust the aileron position
____
transmitters.
PROCEDURE 1 uses an angle position indicator (API). PROCEDURE 2 uses a separate power supply, a digital voltmeter (DVM), and breakout box equipment. PROCEDURE 3 uses airplane power, breakout box equipment, and a digital voltmeter (DVM). Two DVMs are recommended. PROCEDURE 4 does not use special tools. It adjusts the transmitter until the position indicator arrow aligns with the mid-scale mark of the position indicator on the EICAS status display.
S 225-042
(1) GUN 003-999;
Make sure that the length of the transmitter control rod is
8.52 | 0.03 inches (216.4 +/- 0.7 mm). Measure this length from bolt center to bolt center. If the length is not correct, do the adjustment that follows:
S 225-053
(2) GUN 001, 002;
Make sure that the length of the transmitter control rod is
9.22 | 0.03 inches (234.2 +/- 0.7 mm). Measure this length from bolt center to bolt center. If the length is not correct, do the adjustment that follows:
(a) Disconnect the transmitter control rod from the aileron.
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MAINTENANCE MANUAL
(b) Turn the control rod one-half turn at a time to get the specified length.
NOTE: Do not break the lockwire at the fine adjustment nut.
____
(c) Connect the control rod to the aileron. Tighten the nut to a torque of 30 to 35 pound-inches (3.4-3.8 Nm).
S 825-055
(3)
Adjust The Aileron Position Transmitter (PROCEDURE 1):
(a)
Remove the electrical connector from the position transmitter.
(b)
Connect the Angle Position Indicator (API) to the transmitter as shown (Fig. 502).
(c)
Operate the API.
(d)
Loosen the screws that hold the transmitter in the transmitter bracket.
NOTE: Loosen the screws sufficiently to let the transmitter
____
turn in its bracket.
(e) Turn the transmitter in its bracket until the API indicator shows 0 | 0.5 degree.
NOTE: The transmitter must be adjusted to 0 | 0.125 degree to
____ be satisfactory. To get this precision, it is necessary to do more steps.
(f)
Tighten the screws that hold the transmitter in its bracket.
(g)
Make sure that the API shows 0 | 0.125 degrees. If the indication shown is not correct, do the adjustment that follows: 1) Remove the lockwire from the fine adjustment nut on the
transmitter control rod. 2) Turn the fine adjustment nut until the indication on the API is correct.
NOTE: One turn of the adjustment nut changes the API
____ indication by 0.3 degrees.
3) GUN 003-999; Make sure that the length of the control rod is not more than 8.52 | 0.10 inches (216.4 +/- 2.5 mm).
NOTE: If the control rod length and the transmitter
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