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311 Area Aft of Pressure Bulkhead - Left
312 Area Aft of Pressure Bulkhead - Right
E. Access Panels
Number Name/Location
311BL Stabilizer Trim Access Door
F. Prepare for the Test
SUBTASK 27-41-00-860-011
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-41-00-860-012
(2) Make sure that these circuit breakers are closed:
F/O Electrical System Panel, P6-2
Row Col Number Name
B 10 C00207 FLIGHT CONTROL STAB TRIM CONT
D 10 C00840 FLIGHT CONTROL STAB TRIM ACTUATOR
SUBTASK 27-41-00-860-013
(3) Make sure that the main cutout switch, S272 is in the NORMAL position.
SUBTASK 27-41-00-860-014
(4) Make sure that the STAB TRIM switch on the stab trim and cabin door panel, P8-47 is in the
NORMAL position.
SUBTASK 27-41-00-860-015
(5) Make sure that the flaps are in the full up position.
SUBTASK 27-41-00-010-004
(6) To get access to the limit switches, do this step:
Open this access panel:
Number Name/Location
311BL Stabilizer Trim Access Door
G. Procedure
SUBTASK 27-41-00-710-007
(1) Do the test of the limit switch S844:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-00
Page 527
Oct 10/2006
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
(a) Move the stabilizer to the maximum leading edge up (APL NOSE DOWN) position (the
mechanical limits). This can be done using the STAB TRIM switches and then the stabilizer
trim wheel.
(b) Turn the captain’s stabilizer trim wheel clockwise approximately 3 turns.
(c) Move and hold the STAB TRIM switches on the captain’s control wheel to the NOSE DOWN
position.
1) Make sure that the stabilizer leading edge does not move.
2) Release the STAB TRIM switches.
(d) Move and hold the STAB TRIM switches on the captain’s control wheel to the NOSE UP
position.
1) Make sure that the stabilizer leading edge moves down (APL NOSE UP).
2) Release the STAB TRIM switches.
(e) Move the stabilizer to approximately 4 units of trim.
(f) Move the STAB TRIM switches on the captain’s control wheel to the NOSE DOWN position
until the stabilizer stops automatically.
1) Use the bar, SPL-1677 to measure the "B" dimension.
GUN 101-122
2) Make sure the "B" dimension is 39.46 ±0.05 in. (1002.3 ±1.3 mm).
a) Make sure that the STAB TRIM indicator on the control stand reads 4.30 units of
trim.
NOTE: The STAB TRIM indicator gives approximate indications. Do not use the
STAB TRIM indicator indications to adjust the stabilizer trim switches ("B"
dimension).
GUN 001-099, 155-157, 201-999
3) Make sure the "B" dimension is 39.96 ±0.05 in. (1015.0 ±1.3 mm).
a) Make sure that the STAB TRIM indicator on the control stand reads 3.95 units of
trim.
NOTE: The STAB TRIM indicator gives approximate indications. Do not use the
STAB TRIM indicator indications to adjust the stabilizer trim switches ("B"
dimension).
GUN ALL
SUBTASK 27-41-00-710-008
(2) Do the test of the limit switch, S145:
(a) If you use the standby hydraulic pump motor to move the flaps, then do these steps:
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE
LEADING EDGE AND TRAILING EDGE FLAPS AND FLAP DRIVE
MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
1) Put the ALTERNATE FLAP arm switch in the ARM position.
NOTE: The standby hydraulic pump motor will operate when the ALTERNATE FLAP
arm switch is in the ARM position.
2) Move the alternate flap drive control switch to extend the flaps to the 5-unit position.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-00
Page 528
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
(b) If you use the system B hydraulic power to move the flaps, then do these steps:
1) Pressurize hydraulic system B. To pressurize it, do this task: Hydraulic System A or B
Pressurization, TASK 29-11-00-860-801.
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF THE
LEADING EDGE AND TRAILING EDGE FLAPS AND FLAP DRIVE
MECHANISMS BEFORE YOU MOVE THE FLAPS. THE FLAPS CAN CAUSE
INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
2) Move the flap control lever to extend the flaps to the 5-unit position.
(c) Move the stabilizer to the maximum leading edge up (APL NOSE DOWN) position
(mechanical limits). This can be done using the STAB TRIM switches and then the
stabilizer trim wheel.
　
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