S 215-033
(1)
Make sure these circuit breakers on the overhead panel, P11, are closed:
(a)
EICAS (6 locations)
S 215-034
(2)
Make sure airplane electrical connector D1742 is connected to the position transmitter.
S 865-035
(3)
Remove the DO-NOT-CLOSE tag and close this circuit breaker on the P11 panel:
(a)
11J16, RUDDER POS
S 865-036
(4) Push the STATUS switch on the pilot's display select panel, P9, to show the rudder position indicator on EICAS.
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27-28-00
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL
S 825-037
(5)
Adjust the control rod until the position indicator arrow is aligned with the neutral position mark and do this check:
(a)
Make sure the control rod length is 10.50 |0.10 inches
(266.7 +/- 2.5 mm).
NOTE: If it is necessary, turn the transmitter to get the
____ correct indication and control rod length at the same time.
S 435-038
(6)
Lock the control rod with wire.
S 715-039
(7)
Do the operational test procedure for the rudder position indicating system.
I.
Put the Airplane Back to Its Usual Condition
S 865-040
(1)
Remove the power from the left, right, and center hydraulic systems (Ref 29-11-00).
S 415-041
(2)
Close access panel 324BL (Ref 06-42-00).
S 095-044
WARNING: STAY AWAY FROM THE NOSE WHEELS WHEN THE LOCKPIN IS REMOVED.
_______ THE WHEELS CAN TURN TO THE CENTER POSITION QUICKLY, AND CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(3)
Make sure the nose wheels are in their center position and remove the towing lever lockpin from the nose gear (Fig. 501).
(4)
Remove electrical power if it is not necessary (Ref 24-22-00).
S 865-042
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A
757 MAINTENANCE MANUAL
RUDDER POSITION TRANSMITTER - MAINTENANCE PRACTICES
___________________________________________________
1. General_______
A. This procedure contains the removal and installation tasks for the rudder position transmitter.
TASK 27-28-01-022-006
2. Rudder Position Transmitter - Removal_____________________________________
A. Equipment
(1)
Nose Gear Towing Lever Lockpin - A09003-1
B.
References
(1)
06-42-00/201, Empennage Access Doors and Panels
(2)
24-22-00/201, Electrical Power - Control
C.
Access
(1)
Location Zone 324 Vertical Stabilizer - Rear Spar to Trailing Edge
(2)
Access Panels
324BL Aft Side of Rear Spar and Rudder Hinge
324CL Rudder Hinge and PCAs
D.
Prepare for Removal
S 862-001
(1)
Supply electrical power (Ref 24-22-00).
S 862-002
(2)
Move the FLT CONTROL SHUTOFF switches L, C, and R on the right side panel, P61, to OFF. Attach DO-NOT-OPERATE tags and make sure the amber switch position legend lights come ON.
S 862-003
(3)
Open these circuit breakers on the overhead panel, P11, and attach DO-NOT-CLOSE tags:
(a)
11H17, FLT CONT SHUTOFF TAIL LEFT
(b)
11H18, FLT CONT SHUTOFF TAIL CTR
(c)
11H28, FLT CONT SHUTOFF TAIL RIGHT
(d)
11J16, RUDDER POS
S 862-017
(4)
Move the towing lever on the metering valve module to the tow position and install the towing lever lockpin in the nose gear (Fig. 202).
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