(4)
The inspection of the trailing edge flaps
(5)
The inspection of the spoilers.
B.
The procedure gives the permitted limits for the trailing edge movement of the flight control surfaces with the airplane on the ground.
TASK 27-09-91-206-001
2. Ailerons and Aileron Tabs Inspection____________________________________
A. General
(1)
The control surface movement in the specified limits is permitted if the worn areas are equal in all the mechanical parts of the system. If a local area wears more quickly than the other areas in the system, repair that part of the system.
(a)
The limits are provided in Fig. 601.
(2)
Measure the movement with the control surface in the approximate aligned position at the surface inboard trailing edge.
B.
Standard Tools and Equipment
(1)
Dial Indicator - Accurate to 0.001 inch
(2)
Spring Force Scale, Push Type - Capable of 5 +/- 0.2 pounds
(3)
Mounting Device (to hold the dial indicator)
C.
References
(1)
AMM 27-11-00/201, Aileron and Aileron Trim Control System
D.
Access
(1)
Location Zone 306 Wing Trailing Edge Aileron and Control Tab, LH 406 Wing Trailing Edge Aileron and Control Tab, RH
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A 737-300/400/500MAINTENANCE MANUAL
MAXIMUM AXIAL (INBOARD-OUTBOARD) PLAY IS 0.040 INCH (1.02 mm)
MAXIMUM AXIAL (INBOARD-OUTBOARD) PLAY IS 0.030 INCH (0.76 mm)
Flight Control Surface Trailing Edge Play
Figure 601
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
Aileron Free-Play Check
Figure 602
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
G57427
A
737-300/400/500MAINTENANCE MANUAL
E. Procedure
S 866-002
(1)
Pressurize the aileron hydraulic system (AMM 27-11-00/201).
S 226-011
(2)
Do a check of the play of one aileron with no movement of the opposite aileron or the control wheel (Fig. 602):
(a)
Make sure the control wheel is centered.
(b)
Attach a mounting device to the top wing structure (outboard of the aileron) and do these steps: 1) Attach the dial indicator so you can take measurements from
the outboard corner of the aileron trailing edge. 2) Center the plunger of the dial indicator within 0.1 of the aileron trailing edge. 3) Adjust the dial indicator to zero.
CAUTION: USE SUFFICIENT PADDING ON THE FORCE SCALE TO PREVENT
_______
DAMAGE TO THE CONTROL SURFACE.
(c) Use a force scale and apply a load to the aileron center rib (adjacent to the outboard edge of the aileron tab) and centered within 0.5 inch of the trailing edge. 1) Push up with a force of approximately 5 pounds. 2) Make a record of the travel shown on the dial indicator. 3) Slowly remove the force. 4) Push down with a force of approximately 5 pounds.
NOTE: Do not adjust the dial indicator.
____
5) Make a record of the travel shown on the dial indicator. 6) Slowly remove the force.
(d)
Make sure the total up-and-down freeplay of the aileron, is not more than 0.125 inch.
(e)
Remove the dial indicator.
(f)
Remove the mounting device.
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