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1.2 to +1.4 millimeters), convert each of the measurements into a Net Effect Value
(NEV), using Leading Edge Gap/Misfair Measurement, SHEET .
3) Add the NEV measurements together and divide by the total number of measurements.
This gives the total NEV.
4) The Net Effect Limit (NEL) for this measurement is 1.0. The calculated total NEV must be
less than this NEL.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-81-11
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5) If it is necessary, adjust the mismatch dimension.
a) Loosen the jamnut [45] on the rod end [3].
b) Turn the rod end [3] to adjust the length of the flap actuator [4] until you get the
correct mismatch.
NOTE: The limit for maximum adjustment is two full turns.
c) Tighten the jamnut [45] to 550-650 pound-inches (62.1-73.4 newton-meters).
d) Install lockwire, G01912 on the jamnut [45].
SUBTASK 27-81-11-220-004
(14) Do a check of the mismatch at the aft edge of the Leading edge flap [2] and the Leading edge
flap [1] (View L, Fig. 401).
(a) Check the mismatch at the aft edge of the Leading edge flap [2] and the Leading edge
flap [1]at locations 12-19 as shown on Leading Edge Gap/Misfair Measurement, SHEET
(Fig. 402).
1) If all the measurements taken at locations 12-19 are within the range -0.054 to +0.031
inch (-1.4 to +0.8 millimeters), the misfair at the aft edge of the Krueger flap is
acceptable as is without any additional adjustments.
NOTE: See Leading Edge Gap/Misfair Measurement, SHEET for definition of
negative and positive misfair measurements.
2) If one or more of the misfair measurements is outside the range -0.054 to +0.031 inch (-
1.4 to +0.8 millimeters), convert each of the measurements into a Net Effect Value
(NEV), using Leading Edge Gap/Misfair Measurement, SHEET .
3) Add the NEV measurements together and divide by the total number of measurements.
This gives the total NEV.
4) The Net Effect Limit (NEL) for this measurement is 1.0. The calculated total NEV must be
less than this NEL.
5) If the mismatch dimension is out of tolerance for the outboard Leading edge flap [2], do
these steps:
a) Remove the nut [7], washer [8], washer [5], bushing [11], washer [10], and bolt [9] to
disconnect the flap actuator [4] from the Leading edge flap [2].
b) Loosen the jamnut [45] on the rod end [3].
c) Turn the rod end [3] to adjust the length of the flap actuator [4] until you get the
specified mismatch dimension.
NOTE: The limit for maximum adjustment is two full turns. The full extend angle of
the Leading edge flap [2] must still be 98 ±0.5 degrees while you make
this adjustment.
d) Tighten the jamnut [45] to 550-650 pound-inches (62.1-73.4 newton-meters).
e) Install the lockwire, G01912 on the jamnut [45].
f) Connect the flap actuator [4] to the Leading edge flap [2] with bolt [9], washer [10],
bushing [11], washer [5], washer [8] and nut [7].
6) If the mismatch dimension is out of tolerance for the inboard Leading edge flap [1], do
these steps:
a) Remove the nut [16], washer [17], washer [18], bushing [12], washer [13], and bolt
[14] to disconnect the flap actuator [4] from the Leading edge flap [1].
b) Loosen the jamnut [45] on the rod end [3].
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-81-11
Page 419
Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
c) Turn the rod end [3] to adjust the length of the flap actuator [4] until you get the
specified mismatch dimension.
NOTE: The limit for maximum adjustment is two full turns. The full extend angle of
the Leading edge flap [1] must still be 98 ±0.5 degrees while you make
this adjustment.
d) Tighten the jamnut [45] to 550-650 pound-inches (62.1-73.4 newton-meters).
e) Install the lockwire, G01912 on the jamnut [45].
f) Connect the flap actuator [4] to the Leading edge flap [1] with bolt [14], washer [13],
bushing [12], washer [18], washer [17] and nut [16].
SUBTASK 27-81-11-420-004
(15) Tighten the nut [7] or [16] to 660-980 pound-inches (74.6-110.7 newton-meters).
SUBTASK 27-81-11-420-005
(16) Install the pin [6] or pin [15].
SUBTASK 27-81-11-860-008
(17) Move the flap control lever to the 1-unit detent position to extend the leading edge flaps.
SUBTASK 27-81-11-080-001
WARNING: CAREFULLY REMOVE THE LEADING EDGE FLAP ACTUATOR LOCK TO PREVENT
ACCIDENTAL OPERATION OF THE LEADINGE EDGE FLAPS. THE LEADING EDGE
FLAPS CAN MOVE QUICKLY. THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE
　
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