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DOWN position.
b) Make sure the stabilizer leading edge moves up immediately after you move the
stabilizer trim control switches to the NOSE DOWN position.
8) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE DOWN position until the system comes to the full trim speed.
a) Move the stabilizer trim control switches momentarily to OFF and then to the NOSE
UP position.
b) Make sure the stabilizer leading edge moves down immediately after you move the
stabilizer trim control switches to the NOSE UP position.
9) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE UP position until the system comes to full trim speed.
a) Release the stabilizer trim control switches. Make sure the stabilizer trim wheel
moves not more than 2.5 turns (900 degrees).
10) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE DOWN position until the system comes to full trim speed.
a) Release the stabilizer trim control switches. Make sure the stabilizer trim wheel
moves not more than 2.5 turns (900 degrees).
(b) Set the flaps to the full up position.
1) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE DOWN position.
a) Make sure the stabilizer leading edge moves up.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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b) Release the stabilizer trim control switches.
2) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE UP position.
a) Make sure the stabilizer leading edge moves down.
b) Release the stabilizer trim control switches.
3) Push the stabilizer trim control switches on the captain’s control wheel to the NOSE UP
position and then to the NOSE DOWN position.
GUN 101-122
a) Make sure the time for the stabilizer to move from its lower limit of travel to the
upper limit of travel is 46-56 seconds.
GUN 001-099, 155-157, 201-999
b) Make sure the time for the stabilizer to move from its lower limit of travel to the
upper limit of travel is 47-58 seconds.
GUN ALL
c) Make sure the operation is smooth and there is no unusual noise.
4) Use the stabilizer trim control switches on the captain’s control wheel to move the
stabilizer many time in the two directions one after the other for 3 seconds each.
a) Make sure the operation is smooth and there is no unusual noise.
5) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE UP position until the system comes to the full trim speed.
a) Move the stabilizer trim control switches momentarily to OFF and then to the NOSE
DOWN position.
b) Make sure the stabilizer leading edge moves up immediately after you move the
stabilizer trim control switches to the NOSE DOWN position.
6) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE DOWN position until the system comes to the full trim speed.
a) Move the stabilizer trim control switches momentarily to OFF and then to the NOSE
UP position.
b) Make sure the stabilizer leading edge moves down immediately after you move the
stabilizer trim control switches to the NOSE UP position.
7) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE UP position until the system comes to full trim speed.
a) Release the stabilizer trim control switches. Make sure the stabilizer trim wheel
moves not more than 0.5 turns (180 degrees).
8) Push and hold the stabilizer trim control switches on the captain’s control wheel to the
NOSE DOWN position until the system comes to full trim speed.
a) Release the stabilizer trim control switches. Make sure the stabilizer trim wheel
moves not more than 0.5 turns (180 degrees).
(c) Do this task: Stabilizer Trim Motor Test, TASK 22-11-81-710-801.
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-71
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Oct 10/2007
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BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
STABILIZER BALL NUT AND JACKSCREW GEARBOX - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the primary stabilizer ball nut and jackscrew gearbox
(2) An installation of the stabilizer ball nut and jackscrew gearbox.
B. The stabilizer ball nut and jackscrew gearbox is referred to as the "stabilizer trim actuator" in this
　
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