757
MAINTENANCE MANUAL
(b) Push the erase switch for 3 seconds to erase the EICAS maintenance memory.
S 215-268
(7)
Do these steps to make sure no RUDDER PCU messages stay on the EICAS status and maintenance pages:
(a)
Push the STATUS switch on the P9 panel and do this check:
1) Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
(b)
Push the ECS/MSG switch on the P61 panel and do this check:
1) Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
S 215-269
(8)
Move the captain's right pedal to its full forward position (slowly) and do these steps:
(a)
Move the RUDDER DISPLACEMENT switches to RIGHT on the two yaw damper module simulators.
(b)
Do these steps to make sure a RUDDER PCU message comes into view on the EICAS status and maintenance pages: 1) Push the STATUS switch on the P9 panel and do this check:
a) Make sure a RUDDER PCU message comes into view on the bottom EICAS display. 2) Push the ECS/MSG switch on the P61 panel and do this check: a) Make sure a RUDDER PCU message comes into view on the bottom EICAS display.
(c)
Open this circuit breaker on the P11 panel and attach a DO-NOT-CLOSE tag: 1) 11D18 or 11G10, RUDDER RATIO
(d)
Stop for 30 seconds.
(e)
Do these steps to erase the EICAS memory: 1) Push the ECS/MSG switch, then the AUTO EVENT switch on the P61 panel.
2) Push the erase switch for 3 seconds to erase the EICAS maintenance memory.
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27-21-00
ALL ú ú 09 Page 580J ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757 MAINTENANCE MANUAL
(f) Do these steps to make sure no RUDDER PCU messages stay on the EICAS status and maintenance pages: 1) Push the STATUS switch on the P9 panel and do this check:
a) Make sure no RUDDER PCU message comes into view on the bottom EICAS display. 2) Push the ECS/MSG switch on the P61 panel and do this check: a) Make sure no RUDDER PCU message comes into view on the bottom EICAS display.
S 865-270
(9)
Move the captain's right pedal back to its neutral position.
S 865-271
(10)
Move the RUDDER DISPLACEMENT switches to OFF on the two yaw damper module simulators.
S 035-272
(11)
Disconnect connectors D4710, D4714, and D4712 from the test box.
S 435-273
(12)
Connect PCA sensor connectors D4710, D4714, and D4712 to the top, middle, and bottom PCA sensors.
S 025-623
(13)
Remove the two yaw damper module simulators.
S 425-622
(14)
Install the two yaw damper modules (M522, M523) (AMM 22-21-04/401).
Q.
Force Fight at Rudder Neutral - Test
NOTE: Before you do the test, make sure the airplane is stable at
____ ambient air temperature |10.0 degrees F (|5.5 degrees C) for at least one hour.
S 865-274
(1) Remove the power from the center and right hydraulic systems (AMM 29-11-00/201)
NOTE: Only the left hydraulic system will have power.
____
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27-21-00
ALL ú ú 09 Page 580K ú Sep 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 215-275
(2)
Make sure the rudder is in its neutral position (approximately).
S 975-276
(3)
Measure the rudder position.
NOTE: This is the rudder neutral datum position.
____
S 865-277
(4)
Remove the power from the left hydraulic system
(AMM 29-11-00/201).
S 865-278
(5)
Supply pressure to the right hydraulic system
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本文链接地址：757 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 2(34)
