(a)  
Make sure the clearance is not less than 0.03 inch.

 (b)  
If the clearance is less than shown, there can be defective parts on the foreflap or the midflap.

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 27-51-37
 ALL  ú ú 01 Page 407 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
 OUTBOARD AFTFLAP - REMOVAL/INSTALLATION
_______________________________________
 1.  General
_______
 A.  There are two tasks in this procedure. There is a task for the removal and a task for the installation of an outboard aftflap.
 B.  If a new Aft flap is not installed or a repair made to an existing flap that will not change position, it is optional to perform the adjustment of the trailing edge of the aft flap (fig. 402).
 TASK 27-51-39-004-001
 2.  Outboard Aftflap Removal (Fig. 401)
________________________
 A.  References
 (1)  
27-51-00/201, Trailing Edge Flap System

 B.  
Access

 (1)  
Location Zone 307, 407 Wing Trailing Edge Outboard Flap and Spoilers

 (2)  
Access Panels
 8203, 8703 Outboard Midflap Access Panel
 8204, 8704 Outboard Midflap Access Panel
 8205, 8705 Outboard Midflap Access Panel
 8206, 8706 Outboard Midflap Access Panel
 8207, 8707 Outboard TE Flap Access Panel
 8208, 8708 Outboard TE Flap Access Panel

 C.  
Procedure

 S 864-003
 (1)  
Pressurize hydraulic system B (Ref 27-51-00/201).

 S 864-004

 (2)  
Put the flap control lever in the 40-unit detent to extend the flaps.

 S 864-005

 (3)
Release the pressure in hydraulic system B (Ref 27-51-00/201).

 S 014-006

 (4)  
Remove the four access panels from the top surface of the midflap.

 S 024-007

 (5)  
Remove the outboard aftflap:

 (a)  
Remove the bolts that connect the aftflap pushrods to the aftflap.

 (b)  
Remove the bolts, washers and nuts that attach the four bottom flight rollers to the roller support fitting.

 (c)  
Move the aftflap aft and lift the trailing edge.

 (d)  
Remove the aftflap from the aftflap track.

 (e)  
Install the bottom flight rollers on the roller support fitting.

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 27-51-39
 ALL  ú ú 01 Page 401 ú Jul 15/96
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
BELLCRANK CLEVIS ARM
MIDFLAP
A  AFTFLAP
AFTFLAP CARRIAGE (4 LOCATIONS)
A
SEE A
AFTFLAP PUSHROD
FWD
BELLCRANK
INBD
LEFT FLAP SHOWN (RIGHT SIDE OPPOSITE)
TOP FLIGHT ROLLER
ROLLER SUPPORT FITTING
AFTFLAP TRACK
DEAD WEIGHT ROLLER (4 LOCATIONS)
SEE B
BOTTOM FLIGHT ROLLERS
NUT
(EXAMPLE 4 LOCATIONS)
A
FLIGHT ROLLER
ECCENTRIC LOCK
ECCENTRIC BUSHING
DEADWEIGHT ROLLER  ROLLER SUPPORT
B
Outboard Aftflap Installation Figure 401 (Sheet 1)
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 27-51-39
 ALL  ú ú 01 Page 402 ú Jul 15/91
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

FLIGHT ROLLER LOCATION  DIMENSION B INCHES (mm) 
OUTBOARD TRACKS (LEFT AND RIGHT WINGS)  0.23 -0.00/+0.10 (5.84 -0.00/+2.54) 
INBOARD TRACKS (LEFT AND RIGHT WINGS)  0.10 -0.00/+0.20 (2.54 -0.00/+5.08) 

FOR SYMMETRY, THE TOTAL MEASURED CLEARANCE BETWEEN THE INBOARD AND OUTBOARD ENDS OF THE FLAP MUST BE THE SAME BETWEEN THE LEFT AND RIGHT WINGS IN THE LIMIT OF 0.05 INCH (1.27 mm).
　
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