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position.
1) Make sure that the stabilizer leading edge does not move.
2) Release the STAB TRIM switches.
(f) Move and hold the STAB TRIM switches on the captain’s control wheel to the NOSE UP
position.
1) Make sure that stabilizer leading edge moves down (APL NOSE UP).
2) Release the STAB TRIM switches.
(g) Move the stabilizer to approximately 4 units of trim.
(h) 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).
GUN 001-099, 155-157, 201-999
3) Make sure the "B" dimension is 39.96 ±0.05 in. (1015.0 ±1.3 mm).
GUN ALL
SUBTASK 27-41-94-710-005
(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:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-94
Page 511
Oct 10/2007
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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
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.
CAUTION: DURING GROUND OPERATION, DO NOT OPERATE THE FLAP
ALTERNATE DRIVE UNIT MORE THAN 4 MINUTES OPERATION AND
LESS THAN 25 MINUTES OFF. YOU CAN CAUSE DAMAGE TO THE FLAP
ALTERNATE DRIVE UNIT.
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.
(b) If you use the system B hydraulic power to move the flap, then do these steps:
WARNING: MAKE SURE THAT PERSONS AND EQUIPMENT ARE CLEAR OF ALL
CONTROL SURFACE BEFORE YOU SUPPLY HYDRAULIC POWER.
AILERONS, RUDDERS, ELEVATORS, FLAPS, SPOILERS, SLATS, AND
THRUST REVERSERS CAN MOVE QUICKLY WHEN YOU SUPPLY
HYDRAULIC POWER. THIS CAN CAUSE INJURY TO PERSONS AND
DAMAGE TO EQUIPMENT.
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) Set the main cutout switch, S272, in the CUTOUT position.
(d) Use the stabilizer trim wheel to move the stabilizer to the maximum leading edge up (APL
NOSE DOWN) position.
(e) Set the main cutout switch, S272, in the NORMAL position.
(f) Turn the captain’s stabilizer trim wheel clockwise approximately 2 +/- 0.25 turns.
(g) 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.
(h) Move and hold the STAB TRIM switches on the captain’s control wheel to the NOSE UP
position.
1) Make sure that stabilizer leading edge moves down (APL NOSE UP).
2) Release the STAB TRIM switches.
(i) Move the stabilizer to approximately 1 units of trim.
(j) 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.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-94
Page 512
Jun 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
2) Make sure the "B" dimension is 45.48 ±0.10 in. (1155.2 ±2.5 mm).
(k) Move the flap control lever or the alternate flap drive control switch to retract the flaps.
(l) Do this task: Hydraulic System A or B Power Removal, TASK 29-11-00-860-805.
SUBTASK 27-41-94-710-007
(3) Do the test of the limit switch S144:
(a) Move the stabilizer to the maximum leading edge down (APL NOSE UP) position.
(b) Turn the captain’s stabilizer trim wheel counterclockwise approximately 3 turns.
(c) 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 does not move.
2) Release the STAB TRIM switches.
　
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