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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 525
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-21-00-010-025-002
(2) Close these access doors:
Number Name/Location
112A Forward Access Door
311BL Stabilizer Trim Access Door
324CL Vertical Fin, Access
SUBTASK 27-21-00-860-078-002
(3) Do this task: Put the Rudder Systems A, B, and Standby Back to the Condition Before the
Pressure Removal, TASK 27-21-00-840-802.
------------------------- END OF TASK ---------------------------
TASK 27-21-00-820-809-002
5. Control Rod for Main Rudder Power Control Unit Adjustment
(Figure 501, Figure 502)
A. General
(1) Use this task to adjust the control rod for the main rudder power control unit (PCU).
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)
27-11-94 AILERON/RUDDER TRIM CONTROL MODULE
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. 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)
D. Location Zones
Zone Area
211 Flight Compartment - Left
212 Flight Compartment - Right
324 Vertical Fin - Rear Spar To Trailing Edge
E. Access Panels
Number Name/Location
324CL Vertical Fin, Access
324DL Trailing Edge Access
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 526
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
F. Prepare for the Adjustment
SUBTASK 27-21-00-840-012-002
(1) Make sure that these circuit breakers are closed:
CAPT Electrical System Panel, P18-1
Row Col Number Name
C 7 C00285 YAW DAMPER AC
D 6 C01354 YAW DAMPER 2 DC
D 7 C00286 YAW DAMPER 1 DC
SUBTASK 27-21-00-010-033-002
(2) To get access to the main PCU, do this step:
Open this access panel:
Number Name/Location
324DL Trailing Edge Access
SUBTASK 27-21-00-010-034-002
(3) To get access to the rudder feel and centering unit, do this step:
Open this access panel:
Number Name/Location
324CL Vertical Fin, Access
SUBTASK 27-21-00-820-030-002
(4) Manually hold the rudder in the neutral position over the index plate.
SUBTASK 27-21-00-860-079-002
(5) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-21-00-840-013-002
(6) Open this circuit breaker and install safety tag:
F/O Electrical System Panel, P6-2
Row Col Number Name
D 15 C01628 FLIGHT CONTROL FORCE FIGHT MONITOR
SUBTASK 27-21-00-860-080-002
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL CONTROL
SURFACES BEFORE YOU SUPPLY HYDRAULIC POWER. AILERONS, RUDDER,
ELEVATORS, FLAPS, SPOILERS, LANDING GEAR, AND THRUST REVERSERS CAN
MOVE QUICKLY WHEN YOU SUPPLY HYDRAULIC POWER. THIS CAN CAUSE INJURY
TO PERSONS AND DAMAGE TO EQUIPMENT.
(7) Pressurize the rudder hydraulic systems A and B. To pressurize them, do this task: Rudder
Hydraulic System A, B, or Standby Pressurization, TASK 27-21-00-800-801.
(a) Move the rudder pedals to bleed the main rudder PCU until the movement of the rudder is
smooth.
SUBTASK 27-21-00-980-001-002
(8) Make sure the rudder pedals are in the neutral position.
(a) If it is necessary, tap on the rudder pedals lightly to put the rudder pedals to the neutral
position.
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 527
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
SUBTASK 27-21-00-480-020
(9) Install rig pin R-5 from the rig pin kit, SPL-1585 in the rudder feel and centering unit.
　
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