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A
747-400 MAINTENANCE MANUAL
 OUTBOARD AFTFLAP - INSPECTION/CHECK
___________________________________
 1.  General_______
 A.  There is one task in this procedure, an inspection/check of the outboard aftflap.
 B.  In this procedure you measure the inner and outer diameters of the parts which attach the aftflap. The parts include bushings, bearings, pins, and spindles.
 C.  To do the check, the aftflap must be removed from the midflap. Usually you do this check before you install the aftflap.
 TASK 27-51-06-206-001
 2.  Outboard Aftflap Inspection (Fig. 601)___________________________
 A.  Standard Tools and Equipment
 (1)  
Micrometer - 0 to 1 inch (0 to 3 cm)

 (2)  
Micrometer - 1 to 2 inch (1 to 5 cm), To Measure Inner Dimensions

 (3)  
Micrometer - 1 to 2 inch (1 to 5 cm), To Measure Outer Dimensions

 (4)  
Vernier Caliper

 B.  
References

 (1)  
27-51-06/401, Outboard Aftflap

 C.  
Access

 (1)  
Location Zone
 588 Outboard Flap Aftflap, LH
 688 Outboard Flap Aftflap, RH

 D.  
Procedure

 S 026-002
 (1)  
Remove the outboard aftflap (Ref 27-51-06/401).

 S 226-003

 (2)
Examine the parts, which attach the aftflap, for worn areas:

 (a)  
Remove the parts.

 (b)  
Measure the parts.

 NOTE: Use a micrometer or a vernier caliper.
____
 (c)  
Compare the dimensions you measured, with the permitted dimensions shown in Fig. 601.

 (d)  
Repair or replace the parts that are out of the tolerance.

 (e)  
Install the parts.

 (3)  
Install the outboard aftflap (Ref 27-51-06/401).

 S 426-004
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747-400
MAINTENANCE MANUAL

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 27-51-06
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747-400 MAINTENANCE MANUAL
2.  FLANGED BUSHING/SPINDLE

5.  BEARING/SPINDLE
A-A
8.  
FLANGED BUSHING/SPINDLE

9.  
BEARING/SPINDLE

B-B
12.  FLANGED BUSHING/SPINDLE

17.  BEARING/SPINDLE
D-D
Outboard Aftflap Wear Limits Figure 601 (Sheet 2)
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747-400
MAINTENANCE MANUAL

INDEX NO. 1  PART NAME DIM. BUSHING FLANGED ID ODPIN  (cm)(cm) INCHES MINIMUM MAXIMUM INCHES DESIGN LIMITS DIAMETER (2.5380)(2.5113) (2.5413)(2.5400) 0.99920.9887 1.0000 1.0005  (cm) PERMITTED DIMENSION INCHES WEAR WEAR LIMITS (2.5291) (2.5629) 0.9957 1.0090  (cm) MAXIMUM DIAMETER CLEARANCE INCHES (0.0236) 0.0093  PART WORN REPLACE X  PART WORN REPAIR X  REPAIR INSTR 1 
2  5 6SPINDLE BUSHING FLANGED  (5.690)(5.677) (5.725)(5.697) 2.235 2.240 2.2542.243  (5.669) (5.738) 2.232 2.259  (0.069) (AXIAL) 0.027  X  2  1 
　
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