A. Remove rod assembly.
FWD
A-A
CONTROL WHEEL DAMPER ROD ASSEMBLY VIEW A-A
1) Remove the following components from end of rod assembly (callout #1):
a. Hex head bolt.
b. Plain bushing.
c. Flat washer.
d. Self-locking nut.
2) Remove the following components from other end of rod assembly (callout #2):
a. Hex head bolt.
b. Plain bushing.
c. Flat washer.
d. Self-locking nut.
3) Remove rod assembly 250N2004-338 (callout #3). B. Remove damper crank assembly.
CONTROL WHEEL DAMPER CRANK ASSEMBLY
1) Remove the following components (callout #4):
a. Nut.
b. Flat washer.
2) Remove bolt (callout #5).
3) Open damper crank spline (callout #6):
4) Remove damper crank assembly 251N1028-2 (callout #7).
7. Close access door 113AL (AMM 06-41-00/201).
8. Restore the airplane to its usual condition.
B757 - 200 MINIMUM EQUIPMENT LIST
REPAIR INTERVAL C 1 NUMBER INSTALLED
ITEM 0 NUMBER REQUIRED FOR DISPATCH
REMARKS OR EXCEPTIONS
(M) May be inoperative off provided:
a) RUDDER RATIO message on the EICAS is verified to operate normally, and
b) Both control channels operate
normally.
27-21-1 Rudder Ratio Light
EICAS STATUS MESSAGES
None
PLACARD
As appropriate
MAINTENANCE (M)
Verify proper operation of the RUDDER RATIO EICAS message. Utilize the Rudder Ratio Changer System - Test within the System Test - Rudder and Rudder Trim Control (AMM 27-21-00). Note that the RUDDER RATIO light does not have to work, however, the advisory level EICAS message RUDDER RATIO must operate normally.
RUDDER RATIO CHANGER
B757 - 200 MINIMUM EQUIPMENT LIST
EICAS STATUS MESSAGES
L ELEV PCU R ELEV PCU RUDDER PCU
PLACARD
Airplane flight log - POWER CONTROL UNIT MONITOR SYSTEM INOP
MAINTENANCE (M)
Before each departure, perform a single hydraulic system flight controls check, as follows:
CAUTION: IT IS POSSIBLE FOR AN ELEVATOR OR RUDDER PCU MESSAGE TO BE DISPLAYED AS A
CONSEQUENCE OF A PCU MONITOR FAULT RATHER THAN A PCU FAULT. FIM 27-31- 00 CAN ISOLATE THE PROBLEM TO EITHER THE PCU MONITOR MODULE OR ONE OF THE THREE POWER CONTROL UNIT ACUATORS. THE FOLLOWING PROCEDURE CANNOT BE USED AS A TROUBLESHOOTING PROCEDURE, AND IS TO BE APPLIED ONLY AS A REPETITIVE DISPATCH PROCEDURE AFTER THE POWER CONTROL UNIT MONITOR SYSTEM HAS BEEN IDENTIFIED AS THE INOPERATIVE SYSTEM.
WARNING: ENSURE PERSONNEL AND EQUIPMENT ARE CLEAR OF ALL CONTROL SURFACES TO PREVENT INJURY OR DAMAGE.
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