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A. General
(1) Use this test to make sure the horizontal stabilizer moves to the correct position when it is
operated from the stabilizer trim wheel. It also make sure that the stabilizer trim indicator
operates correctly.
B. References
Reference Title
24-22-00-860-811 Supply Electrical Power (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-1677 Assembly - Trammel Bar, Stabilizer Trim Actuator
(Part #: F80055-1, Supplier: 81205, A/P Effectivity: 737-100, -200,
-200C, -300, -400, -500, -600, -700, -700C, -700ER, -700QC, -800, -900,
-900ER, -BBJ)
D. Location Zones
Zone Area
211 Flight Compartment - Left
212 Flight Compartment - Right
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 27-41-00-860-001
(1) Do this task: Supply Electrical Power, TASK 24-22-00-860-811.
SUBTASK 27-41-00-010-003
(2) To get access to the stabilizer trim actuator, do this step:
Open this access panel:
Number Name/Location
311BL Stabilizer Trim Access Door
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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G. Procedure
SUBTASK 27-41-00-710-002
WARNING: MAKE SURE THAT ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE
HORIZONTAL STABILIZERS. THE HORIZONTAL STABILIZER WILL MOVE WHEN YOU
TURN THE CONTROL TRIM WHEELS (OR PUSH THE STAB TRIM SWITCHES). THIS
CAN CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Do the test of the stabilizer manual trim and trim indicator test:
(a) Turn the control trim wheel counterclockwise (full APL NOSE DOWN) until it touches the
stops.
1) Use the bar, SPL-1677 to make sure the "B" dimension is 45.84 ±0.10 in.
(1164.3 ±2.6 mm).
2) Make sure that the two STAB TRIM indicators on the control stand show -0.2 ±0.5 units
of trim.
3) Make sure that the difference between the two STAB TRIM indicators is less than 0.5
units of trim.
(b) Turn the control trim wheel clockwise (full APL NOSE UP) until it touches the stops.
1) Make sure that the horizontal stabilizer moves down freely through the full travel.
2) Use the bar, SPL-1677 to make sure the "B" dimension is 21.32 ±0.10 in.
(541.5 ±2.6 mm).
3) Make sure that the two STAB TRIM indicators on the control stand show 16.9 ±0.5 unit
of trim.
4) Make sure that the difference between the two STAB TRIM indicators is less than 0.5
units of trim.
SUBTASK 27-41-00-410-003
(2) Close this access panel:
Number Name/Location
311BL Stabilizer Trim Access Door
------------------------- END OF TASK ---------------------------
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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Stabilizer Trim Jackscrew Adjustment
Figure 502 (Sheet 1 of 2)/27-41-00-990-802
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-00
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Stabilizer Trim Jackscrew Adjustment
Figure 502 (Sheet 2 of 2)/27-41-00-990-802
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-41-00
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Oct 10/2003
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Stabilizer Trim Wheel and Stabilizer Trim Indicator Locations
Figure 503/27-41-00-990-803
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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TASK 27-41-00-700-802
4. Horizontal Stabilizer Trim Control System Friction Test
(Figure 502)
A. General
(1) Use this procedure to make sure the system operates smoothly.
B. 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
　
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