27-11-31
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
HINGE 4  AILERON  HINGE 3  SEE A BALANCE PANEL 
BALANCE PANEL 
AILERON  HINGE 2 
FWD  SEE  B  HINGE 1 
INBD  A LEFT AILERON (RIGHT OPPOSITE) AILERON TAB 
HINGE PIN RETAINING BOLT 
HINGE SEAL 

HINGE PINS END SEAL
SEAL RETAINERS
B
Balance Panels and Seals Installation Figure 401
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 27-11-31
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

POINT B
NOTE: WITH THE AILERON SYSTEM ADJUSTED, POINT B ON EACH AILERON MUST ALIGN VERTICALLY WITH POINT A TO |0.030 INCH.
Aileron Deflection Diagram Figure 402
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A
737-300/400/500MAINTENANCE MANUAL
 (f)  Disconnect the forward hinge seal.
 TASK 27-11-31-424-002
 3. Balance Panel and Seals Installation (Fig. 401)
____________________________________
 A. Consumable Materials
 (1)  
D00091 Oil - Lubricating, MIL-L-7870

 B.
References

 (1)  
27-11-31/601, Balance Panels and Seal

 C.
Access

 (1)  
Location Zones 306 Wing Trailing Edge Aileron and Control Tab, LH 406 Wing Trailing Edge Aileron and Control Tab, RH

 (2)  
Access Panels
 7103 Access Panel Removable, LH
 7503 Access Panel Removable, RH

 D.
Procedure

 S 224-003
 (1)  
Do this task if you install used balance panel and seals: "Balance Panel and Seals Inspection/Check" (Ref 27-11-31/601).

 S 644-004

 (2)  
Lubricate the forward hinges and hinge pins with the corrosion preventive compound.

 S 424-015

 (3)  
Install the balance panel and seal:

 (a)  
Install the bolts that connect the forward hinge seals and seal retainers to the balance panel.

 (b)  
Put the balance panel in its position.

 (c)  
Install the forward and aft hinge pins.

 (d)  
Install the retaining bolts of the hinge pin.

 (e)  
Install the bolts that connect the seals to the inboard and outboard ends of the balance panel.

 (f)  
Make sure the clearance between the edge of the seals and the wing structure is not more than 0.03 inch.

 (g)  
Make sure that you install the correct number of tab adjust weights on the balance panel.

 NOTE: The data plate on the balance tab will show the number
____ of the adjust weights necessary.
 S 414-011
 (4)  Install the access panel on the lower wing surface.
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737-300/400/500MAINTENANCE MANUAL
 S 214-012
 (5)  Make sure the aileron has full travel and can move freely (Fig. 402).
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