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(d) Turn the captain’s stabilizer trim wheel clockwise approximately 2.00 ±0.25 turns.
(e) 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.
(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 1 unit 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.
2) Make sure the "B" dimension is 45.48 ±0.10 in. (1155.2 ±2.5 mm).
a) Make sure that the STAB TRIM indicator on the control stand reads 0.05 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).
(i) Move the flap control lever or the alternate flap drive control switch to retract the flaps.
(j) Do this task: Hydraulic System A or B Power Removal, TASK 29-11-00-860-805.
SUBTASK 27-41-00-710-014
(3) Do the test of the limit switch S144:
(a) Move the stabilizer to the maximum leading edge down (APL NOSE UP) position
(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 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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(d) Move and hold the STAB TRIM switches on the captain’s control wheel to the NOSE DOWN
position.
1) Make sure that stabilizer leading edge moves up (APL NOSE DOWN).
2) Release the STAB TRIM switches.
(e) Move the stabilizer to approximately 12 units of trim.
(f) Move the STAB TRIM switches on the captain’s control wheel to the NOSE UP position until
the stabilizer stops automatically.
1) Use the bar, SPL-1677 to measure the "B" dimension.
2) Make sure the "B" dimension is 24.80 ±0.10 in. (629.9 ±2.6 mm).
a) Make sure that the STAB TRIM indicator on the control stand reads 14.5 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).
SUBTASK 27-41-00-410-004
(4) Close this access panel:
Number Name/Location
311BL Stabilizer Trim Access Door
------------------------- END OF TASK ---------------------------
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Stabilizer Trim Limit Switches Test
Figure 504 (Sheet 1 of 2)/27-41-00-990-804
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Stabilizer Trim Limit Switches Test
Figure 504 (Sheet 2 of 2)/27-41-00-990-804
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TASK 27-41-00-700-806
8. Stabilizer Clutch Friction System Test
A. General
(1) Use this test to make sure that the correct force disconnects the manual clutch.
B. References
Reference Title
27-41-71-000-801 Stabilizer Trim Motor Removal (P/B 401)
27-41-71-400-801 Stabilizer Trim Motor Installation (P/B 401)
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-1684 Assembly - Wrench, Pinion Gear, Stabilizer Trim Actuator
　
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