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nuts [33].
NOTE: At hinge 2, install the bolt [27] with the head inboard. At hinge 3, install the bolt
[27] with the head outboard.
6) Tighten the nuts [33] to 290-510 pound-inches (32.8-57.6 newton-meters).
7) Install the pin [34].
(b) Install the bolt [30], washers [31] and nut [32] to connect the bonding jumper [29] to the fixed
leading edge.
(c) Connect the bullnose linkage [53] to the fixed leading edge.
1) Install the bolt [42], washer [43], bushing [44], anti-rotation washers [41], washer [56]
and nut [54].
NOTE: Install the bolt [42] with the head inboard.
2) Tighten the nut [54] to 30-50 pound-inches (3.4-5.6 newton-meters).
3) Install the pin [55].
SUBTASK 27-81-11-420-002
(3) If you removed the inboard Leading edge flap [1], connect the inboard Leading edge flap [1] to
the fixed leading edge:
(a) Connect hinges 5 thru 8 on the Leading edge flap [1] to the fixed leading edge.
1) Apply grease, D00633 on the mating surfaces of the bolts [23] and bolts [27].
2) At hinge 5, install the bolt [23], washer [24], bushing [19], washer [20] and nut [22].
NOTE: Install the bolt [23] with the head outboard.
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a) Tighten the nut [22] to 60-95 pound-inches (6.8 10.7 newton-meters).
b) Install the pin [21].
3) At hinges 6 and 7, install the bolts [27], washers [28], bushings [26], washers [25] and
nuts [33].
NOTE: At hinge 6, install the bolt [27] with the head inboard. At hinge 7, install the bolt
[27] with the head outboard.
a) Tighten the nuts [33] to 290-510 pound-inches (32.8-57.6 newton-meters).
b) Install the pin [34].
4) At hinge 8, install the bolt [37], washer [36], bushing [38], washer [35] and nut [39].
NOTE: Install the bolt [37] with the head inboard.
a) Tighten the nut [39] to 60-95 pound-inches (6.8-10.7 newton-meters).
b) Install the pin [40].
(b) Install the bolt [30], washers [31] and nut [32] to connect the bonding jumper [29] to the fixed
leading edge.
(c) Connect the bullnose linkages [53] to the fixed leading edge.
1) Install the bolts [42], washers [43], bushings [44], anti-rotation washers [41], washers
[56] and nuts [54].
NOTE: Install the bolts [42] with the heads outboard.
2) Tighten the nuts [54] to 30-50 pound-inches (3.4-5.6 newton-meters).
3) Install the pin [55].
SUBTASK 27-81-11-210-001
(4) Do a check of the clearances between the Leading edge flap [2] or Leading edge flap [1] and the
fixed leading edge:
(a) Extend the flap actuator [4] until you can temporarily install the bolt [14].
(b) Fully extend the flap actuator [4].
1) Make sure the flap bullnose can move freely.
(c) Adjust the flap rod [57] until the flap bullnose touches the Leading edge flap [2] or Leading
edge flap [1].
(d) Remove the bolt [14] from the flap actuator [3].
(e) Retract the flap actuator [3].
(f) Do this check while you retract the Leading edge flap [1] or Leading edge flap [2] by hand:
1) Make sure there is sufficient clearance exist between the Leading edge flap [1] or
Leading edge flap [2] and the fixed leading edge.
SUBTASK 27-81-11-420-003
(5) Connect the flap actuator [4] to the Leading edge flap [2] or Leading edge flap [1].
(a) Apply grease, D00633 on the mating surfaces of the bolt [14] or [9].
(b) For the outboard Leading edge flap [2], install the bolt [9], washer [10], bushing [11],
washer [5], washer [8] and nut [7].
1) You can bond the washer [5] to the Leading edge flap [2] with sealant, A00247 for easier
installation.
(c) For the inboard Leading edge flap [1], install the bolt [14], washer [13], bushing [12], washer
[18], washer [17] and nut [16].
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1) You can bond the washer [18] to the Leading edge flap [1] with sealant, A00247 for
easier installation.
(d) Tighten the nut [7] or [16] to 660-980 pound-inches (74.6-110.7 newton-meters).
(e) Install the pin [6] or pin [15].
SUBTASK 27-81-11-860-004
WARNING: MAKE SURE ALL PERSONS AND EQUIPMENT ARE CLEAR OF THE FLIGHT CONTROL
SURFACES, THE THRUST REVERSERS, AND THE LANDING GEAR. THESE
COMPONENTS CAN MOVE SUDDENLY WHEN YOU SUPPLY HYDRAULIC POWER.
THIS CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
(6) To pressurize hydraulic system B, do this task: Hydraulic System A or B Pressurization,
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737-600-700-800-900 飞机维护手册7 AIRCRAFT MAINTENANCE MANUA(64)
