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737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-21-82
Page 412
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
RUDDER TRIM ACTUATOR - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the rudder trim actuator
(2) An installation of the rudder trim actuator.
TASK 27-21-87-000-801
2. Rudder Trim Actuator Removal
(Figure 401)
A. References
Reference Title
27-21-00-800-802 Remove Pressure from the Rudder Hydraulic Systems A, B, and
Standby (P/B 201)
B. Location Zones
Zone Area
211 Flight Compartment - Left
212 Flight Compartment - Right
324 Vertical Fin - Rear Spar To Trailing Edge
C. Access Panels
Number Name/Location
324BL Vertical Fin, Trailing Edge Access
D. Prepare for the Removal
SUBTASK 27-21-87-860-001
(1) Open these circuit breakers and install safety tags:
F/O Electrical System Panel, P6-2
Row Col Number Name
D 16 C00788 FLIGHT CONTROL TRIM IND RUD
D 19 C00787 FLIGHT CONTROL TRIM CONT RUD
SUBTASK 27-21-87-860-002
(2) Do this task: Remove Pressure from the Rudder Hydraulic Systems A, B, and Standby,
TASK 27-21-00-800-802.
SUBTASK 27-21-87-010-001
(3) Open this access panel:
Number Name/Location
324BL Vertical Fin, Trailing Edge Access
E. Rudder Trim Actuator Removal
SUBTASK 27-21-87-020-001
(1) Remove the rudder trim actuator [1]:
(a) Disconnect the electrical connector [9] from the rudder trim actuator [1].
(b) Remove the nut [4], washer [5], nut [6], washer [7], and bolt assembly [3] to disconnect the
rudder feel and centering unit [2] from the rudder trim actuator [1].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-21-87
Page 401
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
(c) Remove the nut [10], washer [11], nut [12], washer [13], bushing [14], and bolt [8] that attach
the rudder trim actuator [1] to the airplane structure.
(d) Remove the rudder trim actuator [1] from the airplane.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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Rudder Trim Actuator Installation
Figure 401 (Sheet 1 of 2)/27-21-87-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-21-87
Page 403
Oct 10/2003
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Rudder Trim Actuator Installation
Figure 401 (Sheet 2 of 2)/27-21-87-990-801
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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TASK 27-21-87-400-801
3. Rudder Trim Actuator Installation
(Figure 401)
A. References
Reference Title
27-11-94-990-801 Figure: Aileron/Rudder Trim Control Module (P/B 401)
27-21-00-700-817-001 Rudder Travel Test (P/B 501)
27-21-00-700-817-002 Rudder Travel Test (P/B 501)
27-21-00-700-819-001 Rudder Trim System Test (P/B 501)
27-21-00-700-819-002 Rudder Trim System Test (P/B 501)
27-21-00-800-801 Rudder Hydraulic System A, B, or Standby Pressurization (P/B 201)
27-21-00-800-802 Remove Pressure from the Rudder Hydraulic Systems A, B, and
Standby (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)
27-21-00-840-802 Put the Rudder Systems A, B, and Standby Back to the Condition
Before the Pressure Removal (P/B 201)
B. Tools/Equipment
NOTE: When more than one tool part number is listed under the same "Reference" number, the
tools shown are alternates to each other within the same airplane series. Tool part numbers
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
SPL-1585 Kit - Rigging Pins, All Systems
(Part #: F70207-109, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
C. Location Zones
Zone Area
211 Flight Compartment - Left
212 Flight Compartment - Right
324 Vertical Fin - Rear Spar To Trailing Edge
D. Access Panels
Number Name/Location
324BL Vertical Fin, Trailing Edge Access
　
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