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dial indicator measurements, inches should be recorded and not millimeters.
The calculation for the stabilizer jackscrew freeplay Z uses multipliers that are
calculated using pounds and inches, not kilograms and millimeters. Using
metric equivalents in the equation that determines the freeplay value, Z, will
cause the calculated freeplay values to be in error.
Z = (D3 multiplied by 1.25) - (W multiplied by 0.0000318)
a) If the "Z" value is negative, then the "Z" value is equal to zero.
SUBTASK 27-09-91-220-010
(3) Calculate the total freeplay of the horizontal stabilizer (which is referred to as "H"):
(a) Use the values X, Y, and Z to calculate H:
H = Z + [(X + Y)/2]
SUBTASK 27-09-91-220-011
(4) Do a check of the X, Y, Z, and H values:
(a) If the "X" value is more than 0.060 inch, then replace the left hinge bearing.
(b) If the "Y" value is more than 0.060 inch, then replace the right hinge bearing.
(c) If the "Z" value is more than 0.050 inch, then repair the stabilizer jackscrew
(TASK 27-41-81-000-801).
(d) If the "H" value is more than 0.051 inch, replace the bearings of the stabilizer center section
hinges.
1) If it is necessary, disassemble and adjust the stabilizer jackscrew
(TASK 27-41-81-000-801).
H. Put the Airplane Back to Its Usual Condition
SUBTASK 27-09-91-080-001
(1) Remove the dial indicator, STD-1238.
SUBTASK 27-09-91-080-002
(2) Remove the mount, STD-1279.
SUBTASK 27-09-91-410-002
(3) 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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Horizontal Stabilizer Freeplay Check
Figure 604 (Sheet 1 of 2)/27-09-91-990-804
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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Horizontal Stabilizer Freeplay Check
Figure 604 (Sheet 2 of 2)/27-09-91-990-804
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
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TASK 27-09-91-200-805
6. Spoiler Inspection
A. References
Reference Title
27-51-00-860-803 Extend the Trailing Edge Flaps (P/B 201)
27-51-00-860-804 Retract the Trailing Edge Flaps (P/B 201)
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
that are replaced or non-procurable are preceded by "Opt:", which stands for Optional.
Reference Description
COM-1557 Gauge - Force
(Part #: DG-200, Supplier: 92456, A/P Effectivity: 737-ALL)
(Part #: DPP-500G, Supplier: 92456, A/P Effectivity: 737-ALL)
(Part #: DPPH-150, Supplier: 92456, A/P Effectivity: 737-ALL)
(Part #: DPPH-50, Supplier: 92456, A/P Effectivity: 737-ALL)
(Part #: FDIX 100, Supplier: 0BFD9, A/P Effectivity: 737-ALL)
(Part #: FDIX 50, Supplier: 0BFD9, A/P Effectivity: 737-ALL)
(Part #: FDV 50, Supplier: 0BFD9, A/P Effectivity: 737-ALL)
(Opt Part #: FDI 100, Supplier: 0BFD9, A/P Effectivity: 737-ALL)
STD-1238 Indicator - Dial
STD-1279 Mount - Device, Mounting, Holds the Dial Indicator
C. Location Zones
Zone Area
552 Left Wing - Spoiler No. 6
562 Left Wing - Spoiler No. 5
563 Left Wing - Spoiler No. 4
564 Left Wing - Spoiler No. 3
565 Left Wing - Spoiler No. 2
566 Left Wing - Spoiler No. 1
652 Right Wing - Spoiler No. 7
662 Right Wing - Spoiler No. 8
663 Right Wing - Spoiler No. 9
664 Right Wing - Spoiler No. 10
665 Right Wing - Spoiler No. 11
666 Right Wing - Spoiler No. 12
D. Prepare for the Check
SUBTASK 27-09-91-860-011
WARNING: MAKE SURE PERSONS AND EQUIPMENT ARE CLEAR OF THE TRAILING EDGE FLAPS
AND THE LEADING EDGE FLAPS AND SLATS. THE FLAPS AND SLATS WILL EXTEND.
THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(1) Extend the trailing edge flaps to the FLAP DOWN position with primary control. To extend the
trailing edge flaps, do this task: Extend the Trailing Edge Flaps, TASK 27-51-00-860-803.
NOTE: You can do a check of the spoilers with hydraulic power on or off.
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737-600/700/800/900 AIRCRAFT MAINTENANCE MANUAL飞机维护手册1(97)
