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Discard the packing [20].
(c) Disconnect the pressure line hydraulic system A [21] from the main rudder pcu
installation [1]. Discard the packing [18].
(d) Disconnect the return line hydraulic system B [14] from the main rudder pcu installation [1].
Discard the packing [16].
(e) Disconnect the pressure line hydraulic system B [13] from the main rudder pcu
installation [1]. Discard the packing [18].
(f) Install the plugs and caps to the hydraulic lines and ports.
(g) Install a tag on the hydraulic lines to make sure you install them correctly.
SUBTASK 27-21-91-020-024-001
(8) Use a 200 pounds (90.7 kilograms) fishpole to remove the main rudder pcu installation [1] from
the airplane.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-91
Config 1
Page 403
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Main Rudder Power Control Unit Installation
Figure 401 (Sheet 1 of 4)/27-21-91-990-806-001
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-91
Config 1
Page 404
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Main Rudder Power Control Unit Installation
Figure 401 (Sheet 2 of 4)/27-21-91-990-806-001
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-91
Config 1
Page 405
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Main Rudder Power Control Unit Installation
Figure 401 (Sheet 3 of 4)/27-21-91-990-806-001
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-91
Config 1
Page 406
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Main Rudder Power Control Unit Installation
Figure 401 (Sheet 4 of 4)/27-21-91-990-806-001
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-91
Config 1
Page 407
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Main Rudder PCU Tool Installation
Figure 402/27-21-91-990-807-001
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN 001-005, 155-157, 201-999 PRE SB 737-27-1253 27-21-91
Config 1
Page 408
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
TASK 27-21-91-400-804-001
3. Main Rudder Power Control Unit Installation
(Figure 401, Figure 402)
A. References
Reference Title
12-12-00-610-801 Hydraulic Reservoir Servicing (P/B 301)
27-21-00-700-814-001 Rudder Hinge Bearing and PCU Bearing Freeplay (P/B 501)
27-21-00-700-815-001 Rudder Centering Test (P/B 501)
27-21-00-700-816-001 Rudder Pedal Forces Test (P/B 501)
27-21-00-700-817-001 Rudder Travel Test (P/B 501)
27-21-00-700-821-001 Authority Limiter Test (P/B 501)
27-21-00-700-823-001 Rudder Hinge Friction Test (P/B 501)
27-21-00-800-801 Rudder Hydraulic System A, B, or Standby Pressurization (P/B 201)
27-21-00-820-809-001 Control Rod for Main Rudder Power Control Unit Adjustment
(P/B 501)
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)
SPL-1727 Lock - Ground, Rudder, PCU Removed
(Part #: C27057-1, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
SPL-1731 Equipment - Torque Wrench, Rudder PCU Attachment
(Part #: C27042-1, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
　
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