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155-157, 201-999
27-11-21-01-105 GUN 001-028, 101-121,
155-157, 201-999
12 Pin 27-11-21-01-010 GUN 001-028, 101-121,
155-157, 201-999
27-31-41-01-110 GUN ALL
22 Pin 27-11-21-01-060 GUN 001-028, 101-121,
155-157, 201-999
27-31-41-01-110 GUN ALL
23 Pin 27-11-21-01-060 GUN 001-028, 101-121,
155-157, 201-999
27-31-41-01-110 GUN ALL
37 Pin 27-11-21-01-060 GUN 001-028, 101-121,
155-157, 201-999
27-31-41-01-110 GUN ALL
D. Location Zones
Zone Area
572 Left Wing - Aileron
672 Right Wing - Aileron
E. Aileron Balance Tab Installation
SUBTASK 27-11-21-220-001
(1) If you install used bearings, bushings and bolts, do this task: Aileron Balance Tab Inspection,
TASK 27-11-21-200-801.
SUBTASK 27-11-21-210-001
(2) Make sure the balance panels have the correct number of the tab adjust weights (Figure 402).
(a) If it is necessary, add or remove tab adjust weights (SRM 51-60-03).
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AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-11-21
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SUBTASK 27-11-21-640-001
(3) Lubricate the hinge bearings, bushings [18], [26], [35], [36] and bolts [24], [19], [33] with grease,
D00633 except on the threads (Figure 401).
SUBTASK 27-11-21-420-001
(4) Install the aileron balance tab assembly [2]:
(a) Put the aileron balance tab assembly [2] in its position.
(b) Install the hinge fittings on the aileron balance tab assembly [2] with the fittings on the
aileron [1].
1) Do these steps at tab hinges 1, 4, and 5:
a) Install the bolts [33], washers [34], bushings [35], bushings [36], washers [39], and
nuts [38].
b) Tighten the nuts [38] to 50-80 pound-inches (5.6-9.0 newton-meters).
NOTE: Tighten the nuts [38] to the lower end of the torque range. Continue to
tighten the nut until the first castellation aligns with the hole in the bolt [33].
c) Install a new pin [37].
2) Do these steps at tab hinges 3:
a) Install the bolt [24], washer [25], bushings [26], washer [27], and nut [28].
b) Tighten the nut [28] to 50-80 pound-inches (5.6-9.0 newton-meters).
NOTE: Tighten the nut [28] to the lower end of the torque range. Continue to
tighten the nut until the first castellation aligns with the hole in the bolt [24].
c) Install a new pin [23].
3) Do these steps at tab hinge No. 2:
a) Install the bolt [19], washer [20], bushing [18], washer [21], and nut [17].
b) Make sure there is a minimum 0.0150 inch (0.38 millimeter) gap between the
bushing and washer (Figure 401)(View A-A).
c) Tighten the nut [17] to 50-80 pound-inches (5.6-9.0 newton-meters).
NOTE: Tighten the nut [17] to the lower end of the torque range. Continue to
tighten the nut until the first castellation aligns with the hole in the bolt [19].
d) Install a new pin [22].
(c) Install the bonding jumpers [29] at tab hinges No. 1 and No. 5:
1) Install bolts [30], washers [31], nuts [32].
2) Fillet seal the bonding jumper joints with sealant, A00247 or sealant, A02315.
(d) Install the hinge covers [5] to close the hinge bolt access areas.
1) Install the hinge covers [5] with washers [4] and bolts [3].
2) Make sure the washer [4] touches the aileron balance tab assembly [2] on a minimum
of two edges.
3) Tighten the bolts [3] to 22-28 pound-inches (2.5-3.2 newton-meters).
(e) Connect the control rods [10] to the aileron balance tab assembly [2]:
1) Install bolts [14], washers [15], bushings [16], washers [13], and nuts [11].
a) Make sure there is a minimum 0.0150 inch (0.38 millimeter) gap between the
bushing and washer [15] (Figure 401) (View A-A).
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AIRCRAFT MAINTENANCE MANUAL
EFFECTIVITY
GUN ALL 27-11-21
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Oct 10/2007
D633A101-GUN
BOEING PROPRIETARY - Copyright#Unpublished Work - See title page for details
2) Tighten the nuts [11] to 50-80 pound-inches (5.6-9.0 newton-meters).
3) Install the pin [12].
SUBTASK 27-11-21-420-002
(5) Install the bolts [6] to attach the aft removable fairing [7] to the aileron balance tab assembly [2].
SUBTASK 27-11-21-420-003
(6) Install the bolts [8] to attach the forward removable fairing [9] to the aileron [1].
(a) Apply sealant, A02315, to the upper edge of the forward removable fairing [9] to get
aerodynamic smoothing.
SUBTASK 27-11-21-710-001
(7) Operate the aileron control wheel through full travel.
(a) Make sure the aileron balance tab assembly [2] moves freely in the opposite direction to
the aileron [1].
SUBTASK 27-11-21-860-002
(8) Do this task: Put the Aileron Hydraulic Systems A and B Back to the Condition Before
　
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