S 824-048
(9)
Adjust the Autopilot Servo control rod (5) until the Phase Synchronous voltmeter shows 0.00 | 0.03 IN-PHASE VOLTS. Make sure the control rod (5) is connected to the Servo.
S 434-049
(10)
Install the nut (4) and washer (3) on the bolt (2) that attaches the rod end to the quadrant autopilot crank.
(5) Set the CAL/RUN (S2) switch to CAL CHK. VOLTS are 9.990 to 10.010. Make sure the IN-PHASE
(6) S 864-045Set the CAL/RUN (S2) switch to RUN.
S 034-046
(a) Tighten the nut (4).
S 434-050
(11)
Tighten the control rod (5) jamnut.
S 084-051
(12)
Disconnect the Phase Synchronous Voltmeter
(a)
Set the ON/OFF switch to OFF.
(b)
Disconnect the -1 and -5 cable assemblies from the Autopilot Servo.
(c)
Disconnect the voltmeter from the power source.
S 434-052
(13)
Connect the airplane electrical connector to the autopilot servo.
S 034-053
(14)
Remove rig pins A1 and A2.
(15)
Do the Test the Servo Installation steps
S 714-054
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A
757 MAINTENANCE MANUAL
I. Test the Servo Installation
S 864-055
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 OR DAMAGE CAN OCCUR WHEN HYDRAULIC POWER IS SUPPLIED.
(1)
Pressurize the left, center, and right hydraulic systems (Ref 29-11-00).
S 984-056
(2)
Manually operate the ailerons several times.
S 714-057
(3)
Start MCDP Ground Test 66-XDCR OUTPUTS (Ref 22-00-02).
S 714-052
(4)
Push YES/ADV until MCDP top line message 66 AIL SURF DEG shows.
S 214-058
(5)
With the control wheel released, make sure the MCDP bottom line shows 00.0 |0.5 degrees. Make sure the difference between the channels (L-R, R-C, L-C) is not more than 0.4 degrees.
S 714-053
(6)
Do MCDP Ground Test 67-SERVO AIL (AMM 22-00-02/201) for all three autopilot channels.
(a)
Answer YES for the "67 AIL TO POS LIM ?" message.
1) Make sure the MCDP bottom line value for the left, center, and right channels is 19.0 degrees minimum and the A/P DISC light remains off.
(b)
Answer YES for the "67 AIL TO NEG LIM ?" message.
1) Make sure the MCDP bottom line value for the left, center, and right channels is 19.0 degrees minimum and the A/P DISC light remains off.
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A
757 MAINTENANCE MANUAL
S 714-062
(7) Do MCDP Ground Test 07-SERVO AIL (Ref 22-00-02).
(a) Make sure no fault messages show during the test.
S 214-064
(8) Inspect the installation for hydraulic leaks and fix them as necessary.
J. Put the Airplane Back to Its Usual Condition
S 864-065
(1)
Set the MCDP to off.
S 864-066
(2)
Remove hydraulic power if it is not necessary (Ref 29-11-00).
S 864-067
(3)
Remove electrical power if it is not necessary (Ref 24-22-00).
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本文链接地址：757 AMM 飞机维护手册 自动飞行 AUTOFLIGHT 2(3)
