747-400 AMM 飞机维护手册 飞行操纵 FLIGHT CONTROLS 4(113)

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6  BUSHING PIN OD ID  0.7487 0.7494 0.7492 0.7502 (1.903)(1.902) (1.906)(1.903)  0.7434 0.7552 (1.888) (1.918)  (0.015) 0.006  X X 
7  ARM FITTING 2 1  2.983 2.997 3.013 2.995 (7.607)(7.577) (7.612) (7.653)  3.065 2.927 (7.435) (7.785)  0.070 (AXIAL) (0.118)  X X 

THE DIMENSION BETWEEN THE SHOULDERS OF THE BUSHINGS. THE DIMENSION BETWEEN THE THRUST SHOULDERS.
Outboard Aftflap Arm Assembly Wear Limits
Figure 601 (Sheet 2)

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747-400
MAINTENANCE MANUAL

A-A

Outboard Foreflap Track and Midflap Roller Wear Limits
Figure 602 (Sheet 1)

G77835
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747-400
MAINTENANCE MANUAL

1 NO. INDEX  PART NAME DIM. 1BUSHING  (cm) INCHES (cm) INCHES 2.038 2.048 DIAMETER DESIGN LIMITS MAXIMUMMINIMUM (5.177) (5.202)  (cm) INCHES 2.073 WEAR LIMITS WEAR DIMENSION PERMITTED (5.265)  (cm) 0.050 INCHES CLEARANCE DIAMETER MAXIMUM  X REPLACE WORN PART  REPAIR WORN PART INSTR REPAIR 
2ROLLER  2.014 2.023 (5.138)(5.116)  1.988 (5.050)  (0.127)  X 3 
2  5 4ROLLER TRACK  1.700 1.724 1.690 1.710 (4.379)(4.343) (4.318)(4.293)  1.660 1.750 (4.445) (4.216)  0.050 6 (0.127)  X 
X 
3  ID ODBUSHING ROLLER  0.49700.4960 0.50250.5015 (1.262)(1.260) (1.276)(1.274)  0.4910 0.5100 (1.247) (1.295)  0.010 (0.025)  X 3 
X 

NOTE:BEARING OR ROLLER INDENTATION WEAR ON FOREFLAP TRACK SHOULD NOT EXCEED
0.02 INCH.

DIMENSION MEASURED BETWEEN BUSHINGS IN RIB.
DIMENSION MEASURED BETWEEN TEFLON SHOULDERS OF ROLLER.
IF TEFLON LINER IS WORN OR TORN, ROLLER SHOULD BE REPLACED.
DIMENSION MEASURED BETWEEN SHOULDERS ON ROLLER. APPLIES TO ALL ROLLERS.
FLAP TRACK WIDTH MEASURED ON EXTREME INBOARD AND EXTREME OUTBOARD TRACKS

ONLY. TRACK WIDTH ON 2 INNER TRACKS IS NOT CONSTANT AND CANNOT BE MEASURED ON AIRPLANE. MAXIMUM AXIAL CLEARANCE APPLIES TO ALL TRACKS. TRACK WIDTH ON 2 INNER
TRACKS IS NOT CONSTANT AND AXIAL CLEARANCE APPLIES ONLY IN RETRACTED POSITION.
Outboard Foreflap Track and Midflap Roller Wear Limits
Figure 602 (Sheet 2)

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400 MAINTENANCE MANUAL
 OUTBOARD FOREFLAP - REMOVAL/INSTALLATION
________________________________________
 1.  General_______
 A.  This section contains two tasks, one for the removal and one for the installation of an outboard foreflap.
 (1)  
The removal procedure has these parts:

 (a)  
The extension of the outboard flight spoilers

 (b)  
The extension of the flaps

 (c)  
The installation of the support equipment

 (d)  
The removal of the outboard foreflap.

 (2)  
The installation procedure has these parts:

 (a)  
A check of the parts for worn areas

 (b)  
The installation of the outboard foreflap

 (c)  
The removal of the support equipment

 (d)  
An adjustment of the outboard foreflap

 (e)  
The retraction of the flaps

 (f)  
The retraction of the outboard flight spoilers.

 B.  
You can remove and install the outboard foreflap independently of the inboard midflap and aftflap.

 TASK 27-51-05-004-001
　
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