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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TASK 27-21-00-700-823-002
17. Rudder Override Operational Test
(Figure 506)
A. General
WARNING: FOLLOW THE STEPS IN THIS TASK IN THE ORDER THAT THEY ARE WRITTEN.
FAILURE TO DO SO CAN CAUSE INJURY TO PERSONS AND DAMAGE TO
EQUIPMENT.
(1) Use this test to verify that the override mechanisms installed on the torque tube are operational.
B. Location Zones
Zone Area
324 Vertical Fin - Rear Spar To Trailing Edge
C. Access Panels
Number Name/Location
324BL Vertical Fin, Trailing Edge Access
324DL Trailing Edge Access
D. Procedure
SUBTASK 27-21-00-840-017-002
(1) Put the FLT CONTROL A and B switches, on the P5 panel, to the OFF position.
SUBTASK 27-21-00-010-031-002
(2) To gain access to the torque tube, do this task:
Open these access panels:
Number Name/Location
324BL Vertical Fin, Trailing Edge Access
324DL Trailing Edge Access
SUBTASK 27-21-00-730-025-002
(3) Do the rudder override operational test:
(a) Make sure the rudder and rudder pedals are in the neutral position.
(b) Manually hold the rudder aft edge in the centered position.
(c) Observe the torque tube override assemblies and do these steps:.
1) Slowly push on the captain’s left rudder pedal forward full travel then return the pedal
to the neutral position.
NOTE: It will require more force than normal operation for the override mechanism to
breakout of the detent position.
2) Verify that all 3 override assemblies breakout of their detent positions.
3) Verify that there is no sign of binding or interferences at any point of travel on the three
override assemblies.
a) If binding or excessive friction exist, the override assemblies may be damaged or
improperly installed. Correct this condition and repeat this check.
(d) Observe the torque tube override assemblies and do these steps:.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 006-099, 101-122; GUN 001-005, 155-157, 201-999
POST SB 737-27-1253
27-21-00
Config 2
Page 572
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
1) Slowly push on the captain’s right rudder pedal forward full travel then return the pedal
to the neutral position.
NOTE: It will require more force than normal operation for the override mechanism to
breakout of the detent position.
2) Verify that all 3 override assemblies breakout of their detent positions.
3) Verify that there is no sign of binding or interferences at any point of travel on the three
override assemblies.
a) If binding or excessive friction exist, the override assemblies may be damaged or
improperly installed. Correct this condition and repeat this check.
SUBTASK 27-21-00-410-017-002
(4) Install these access panels:
Number Name/Location
324BL Vertical Fin, Trailing Edge Access
324DL Trailing Edge Access
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 006-099, 101-122; GUN 001-005, 155-157, 201-999
POST SB 737-27-1253
27-21-00
Config 2
Page 573
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Rudder Override Operational Test
Figure 506/27-21-00-990-817-002
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 006-099, 101-122; GUN 001-005, 155-157, 201-999
POST SB 737-27-1253
27-21-00
Config 2
Page 574
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TASK 27-21-00-700-824-002
18. Rudder Main PCU Force Fight Monitor Test
A. General
(1) Use this test to verify that the STBY RUD ON light on the overhead panel P5-3 is functional.
B. References
Reference Title
24-22-00-860-811 Supply Electrical Power (P/B 201)
24-22-00-860-812 Remove Electrical Power (P/B 201)
27-21-00-800-801 Rudder Hydraulic System A, B, or Standby Pressurization (P/B 201)
27-21-00-840-801 Put the Rudder Hydraulic systems A, B, and Standby Back to the
Condition Before the Pressurization (P/B 201)
C. Location Zones
Zone Area
324 Vertical Fin - Rear Spar To Trailing Edge
D. Access Panels
Number Name/Location
324CL Vertical Fin, Access
324EL Vertical Fin, Access
E. Procedure
SUBTASK 27-21-00-860-157-002
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-21-00-860-143-002
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL飞机维护手册2(77)
