27-18-00
ALL ú ú 10 Page 512 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
4) GUN 001, 002; Make sure that the length of the control rod is not more than 9.22 | 0.10 inches (234.2 +/- 2.5 mm).
NOTE: If the control rod length and the transmitter
____ voltage are not correct at the same time, turn the transmitter body. If the transmitter body is turned in its bracket, tighten the screws and apply the tamper proof putty.
5) Install the lockwire to hold the adjustment nut in position.
(h)
Stop the API.
(i)
Disconnect the API from the position transmitter.
(j)
Connect the airplane electrical connector to the position transmitter.
(k)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel: 1) 11J14, AILERON POS LEFT 2) 11J22 or 11J23, AILERON POS RIGHT
(l)
Do the aileron position-indicating system operational test.
S 825-056
(4)
Adjust The Aileron Position Transmitter (PROCEDURE 2)
(a)
Disconnect the electrical connector from the position
transmitter.
(b)
Connect the breakout box and cable assembly to the position transmitter as shown (Fig. 502).
(c)
Connect a digital voltmeter (DVM) to the breakout box at pins 4 (SIG HI) and 5 (SIG LO).
(d)
Connect the power supply to the breakout box at pins 1 (LO) and 2 (HI). Adjust the power supply to 26 | 0.02 volts ac RMS.
(e)
Make sure that the output voltage as shown on the DVM is 0 | 0.050 volts ac RMS. If the voltage shown on the DVM is not correct, do the adjustment that follows: 1) If large adjustments are necessary, adjust as follows:
a) Loosen the screws that hold the transmitter in its bracket.
b) Turn the transmitter in its bracket until the output voltage shown on the DVM is very near the specified voltage.
c) Tighten the screws that hold the transmitter in its bracket. 2) If fine adjustments are necessary, adjust as follows: a) Cut the lockwire at the fine adjustment nut on the transmitter control rod. b) Turn the fine adjustment nut until the specified voltage is shown on the DVM.
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27-18-00
ALL ú ú 10 Page 513 ú Jan 28/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
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
____ voltage are not correct at the same time, turn the transmitter body. If the transmitter is turned inside its bracket, tighten the screws and apply the tamper proof putty.
4) GUN 001, 002; Make sure that the length of the control rod is not more than 9.22 | 0.10 inches (234.2 +/- 2.5 mm).
NOTE: If the control rod length and the transmitter
____ voltage are not correct at the same time, turn the transmitter body. If the transmitter is turned in its bracket, tighten the screws and apply the tamper proof putty.
5) Install the lockwire to hold the fine adjustment nut in position. 6) Make sure that the specified voltage is shown on DVM.
(f)
Disconnect the power supply, DVM, and cable assembly from the breakout box.
(g)
Disconnect the cable assembly from the position transmitter.
(h)
Connect the airplane electrical connector to the position transmitter.
(i)
Remove the DO-NOT-CLOSE tags and close these circuit breakers on the P11 panel: 1) 11J14, AILERON POS LEFT 2) 11J22 or 11J23, AILERON POS RIGHT
(j)
Do the aileron position-indicating system operational test.
S 825-057
(5)
Adjust The Aileron Position Transmitter (PROCEDURE 3):
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