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(m) Manually hold the rudder main PCU upper control rod at location A (Figure 505) and pull
forward with sufficient force to break out the input override (approximately 30 lbs). Hold the
control rod in this position for at least 7 seconds then release.
(n) Verify that the STBY RUD ON light and STANDBY HYD LOW PRESS light on the overhead
panel P5-3 are illuminated.
NOTE: STANDBY HYD LOW PRESS light will not illuminate until hydraulic pressure has
bled off (approximately 5 minutes).
NOTE: The standby hydraulic pumps will not activate.
(o) Remove the safety tag and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
C 11 C00362 FLIGHT CONTROL SHUTOFF VALVES STBY RUD
(p) Verify that the STANDBY HYD LOW PRESS light on the overhead panel P5-3 is not
illuminated.
NOTE: The standby hydraulic pumps will activate.
(q) Open this circuit breaker on the P6-2 panel for at least 2 seconds then close:
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 577
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
Open and close this circuit breaker:
F/O Electrical System Panel, P6-2
Row Col Number Name
D 15 C01628 FLIGHT CONTROL FORCE FIGHT MONITOR
(r) Verify that the STBY RUD ON light on the overhead panel P5-3 is not illuminated.
SUBTASK 27-21-00-860-151-002
(14) Do this task: Put the Rudder Hydraulic systems A, B, and Standby Back to the Condition
Before the Pressurization, TASK 27-21-00-840-801.
SUBTASK 27-21-00-860-152-002
(15) Do this task: Remove Electrical Power, TASK 24-22-00-860-812.
SUBTASK 27-21-00-410-018-002
(16) Install these access panels:
Number Name/Location
324CL Vertical Fin, Access
324EL Vertical Fin, 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 578
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
RUDDER - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the rudder
(2) An installation of the rudder.
TASK 27-21-11-000-801
2. Rudder Removal
(Figure 401, Figure 402)
A. References
Reference Title
27-21-00-800-802 Remove Pressure from the Rudder Hydraulic Systems A, B, and
Standby (P/B 201)
27-21-91-990-804-002 Figure: Main Rudder Power Control Unit Installation (P/B 401)
27-21-91-990-806-001 Figure: Main Rudder Power Control Unit Installation (P/B 401)
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-2033 Sling - Rudder
(Part #: C27035-20, Supplier: 81205, A/P Effectivity: 737-600, -700,
-700C, -700ER, -700QC, -800, -900, -900ER, -BBJ)
C. Location Zones
Zone Area
324 Vertical Fin - Rear Spar To Trailing Edge
325 Vertical Fin - Rudder
D. Prepare for the Removal
SUBTASK 27-21-11-860-001
(1) Do this task: Remove Pressure from the Rudder Hydraulic Systems A, B, and Standby,
TASK 27-21-00-800-802.
SUBTASK 27-21-11-010-001
(2) Remove these access panels:
(a) Hinge covers
SUBTASK 27-21-11-020-001
(3) Remove the seals and seal attachment plates from each side of the fin at the rudder balance
weight.
SUBTASK 27-21-11-860-002
(4) 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
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-21-11
Page 401
Oct 10/2006
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
E. Rudder Removal
SUBTASK 27-21-11-480-001
(1) Do these steps to install the sling, SPL-2033 (Figure 401):
(a) Install the hoist fittings on the RUDDER [1] with a 1⁄4 in. (6.4 mm) drive socket.
(b) Install two 70 ft (21 m) ropes to make sure the rudder does not rotate and hit the airplane.
(c) Attach the sling to the hoist fittings installed on the RUDDER [1].
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL飞机维护手册2(79)
