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A
737-300/400/500MAINTENANCE MANUAL
 INBOARD FOREFLAP - INSPECTION CHECK
___________________________________
 1.  General_______
 A.  There is one task in this procedure, an inspection of the inboard foreflap. To do this inspection, you measure the diameters of the bushings and bearings that attach the foreflap toggle rollers.
 TASK 27-51-07-226-001
 2.  Inboard Foreflap Inspection___________________________
 A.  Standard Tools and Equipment
 (1)  
Micrometer - 0 to 1 inch

 (2)  
Vernier Caliper

 B.  
References

 (1)  
27-51-07/401, Inboard Foreflap

 C.  
Access

 (1)  
Location Zone 309, 409 Wing Trailing Edge Inboard Flap and Spoilers

 D.  
Procedure

 S 026-002
 (1)
Do this task: "Inboard Foreflap Removal" (Ref 27-51-07/401).

 S 226-003

 (2)  
Measure the parts of the toggle on the inboard foreflap (Fig. 601):

 (a)  
Remove the parts.

 (b)  
Use a micrometer or a vernier caliper to measure the parts.

 (c)  
Compare the dimensions you measured with the permitted dimensions shown in Fig. 601.

 (d)  
Replace the parts that are not in the tolerance.

 (e)  
Install the parts.

 (3)  
Do this task: "Inboard Foreflap Installation" (Ref 27-51-07/401).

 S 426-004
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL

 

4. BUSHING/ 3. BUSHING BEARING BEARING
A-A
B-B
INDEX NO. PART NAME  DIM.  DESIGN LIMITS  WEAR LIMITS  REPLACE PART WORN  REPAIR WORN PART  REPAIR INSTR. 
DIAMETER  PERMITTED WEAR DIM.  CLEAR-ANCE MAX DIA 
MIN  MAX 
1 BUSHING  ID  0.5030  0.5040  0.5085  0.0072  X 
BUSHING  OD  0.5006  0.5013  0.4958  X 
2 BUSHING  ID  0.3750  0.3765  0.3800  0.0050  X 
BEARING  OD  0.3740  0.3750  0.3700  X 
3 BUSHING  ID  0.3750  0.3765  0.3800  0.0050  X 
BEARING  OD  0.3740  0.3750  0.3700  X 
4  BUSHING  ID  0.3750  0.3765  0.3800  0.0050  X 
BEARING OD  0.3740  0.3750  0.3700  X 

Inboard Foreflap Wear Limits
Figure 601

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A
737-300/400/500MAINTENANCE MANUAL
 INBOARD 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 inboard aftflap.
 TASK 27-51-11-004-001
 2.  Aftflap Removal_______________
 A.  References
 (1)
27-51-00/201, Trailing Edge Flap Systems

 B.  
Access

 (1)  
Location Zone 309, 409 Wing Trailing Edge Inboard Flap and Spoilers

 C.  
Procedure

 (1)  S 864-002Do this task: "Hydraulic System B Pressurization" (Ref 27-51-00/201).
 (2)  S 864-003Put the flap control lever in the 40-unit detent.
 (3)  S 864-004Do this task: "Hydraulic System B Depressurization" (Ref 27-51-00/201).
 (4)  S 014-005Remove the trailing edge from the midflap (Fig. 401).
 (5)  S 024-006Remove the aftflap: (a) Remove the bottom flight rollers from the aftflap carriages. (b) Disconnect the pushrods from the leading edge of the aftflap. (c) Move the aftflap rearward. (d) Lift the trailing edge of the aftflap and remove it from the flap tracks.
　
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