(l)
Tighten the hinge cover screws.
(m)
Install the bolts, washers, and nuts that connect the tab control rods to the tab mast.
(n)
Tighten the nuts to 50-70 pound-inches.
(o)
Install the forward part of the tab fairing.
1) If it is necessary, adjust the forward part of the tab fairing: a) Loosen the three screws. b) Move the fairing position to give a clearance with the
aileron fairing at all the tab positions.
S 714-009
(6)
Operate the aileron control wheel through full travel.
(a)
Make sure the balance tab moves freely in the opposite direction to the aileron.
S 284-013
(7) Do a check of the distance between the aileron trailing edge and the aileron tab trailing edge:
NOTE: The index mark on the aileron must align with the index mark
____ on the wing (use a tolerance of +/- 0.03 inch) when you do this check.
(a)
Use a straightedge or an aileron tab alignment protractor to measure the distances.
(b)
Measure 0.50 |0.25 inch in from the inboard end of balance tab.
1) Make sure the tab trailing edge aligns with the extension of the aileron bottom surface between +0.00 to +0.14 inch.
(c)
Measure 0.50 |0.25 inch in from the outboard end of the balance tab. 1) Make sure the tab trailing edge aligns with the extension
of the aileron bottom surface between +0.00 to +0.14 inch.
(d)
Measure at the middle point along the balance tab.
1) Make sure the tab trailing edge aligns with the extension of the aileron bottom surface between +0.05 to +0.09 inch.
(e)
Add the dimensions from steps (b) thru (d).
(f)
Make sure the total dimension is between +0.30 and +0.12 inch.
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27-11-21
ALL ú ú 02 Page 406 ú Nov 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
(8) S 824-014Do this task to do a check on the movement of the balance tab: "System Test - Aileron and Aileron Trim Control System" (AMM 27-11-00/501).
(9) S 824-015Do this task to find and correct the flight control forces that are not symmetrical: "Flight Test to Find and Correct Asymmetrical Flight Control Forces" (Ref 27-11-00/501).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-11-21
ALL ú ú 01 Page 407 ú Jul 15/98
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
AILERON BALANCE TAB - INSPECTION/CHECK
______________________________________
1. General_______
A. This procedure contains the task to do the inspection of the aileron balance tab.
B. The procedure does not include instructions for access, removal, or replacement of the component after inspection of the worn areas. Refer to the Aileron Balance Tab - Removal/Installation for instructions to do this task.
TASK 27-11-21-206-001
2. Aileron Balance Tab Inspection/Check____________________________________
A. References
(1)
27-11-21/401, Aileron Balance Tab
B.
Access
(1)
Location Zone
C.
Procedure
S 026-003
(1)
Do this task: "Removal of the Aileron Balance Tab" (Ref 27-11-21/401).
S 226-002
(2)
Do a check of the aileron balance tab (Fig. 601):
(a)
Remove the parts to be measured.
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