S 094-043

 (27)
 Do this task:  "Removal of the Door Locks on the Body Landing Gear" (AMM 32-00-30/201).

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747-400 MAINTENANCE MANUAL
 WING GEAR TORSION LINKS - INSPECTION/CHECK
__________________________________________
 1.  General_______
 A.  The torsion links inspection measures the fit of the pins for the upper torsion link and for the lower torsion link and the apex pin.
 B.  Removw the upper torsion link, the lower torsion link, and the bolt assemblies to do the inspection.
 TASK 32-11-14-206-001
 2.  Torsion Links Examination For Worn Areas (Fig. 601)________________________________________
 A.  References
 (1)  
32-11-14/401, Wing Gear Torsion Links

 (2)  
IPC 32-11-02 Fig. 2, IPC 32-11-14 Fig. 2, IPC 32-11-21 Fig. 1

 B.  
Access

 (1)  
Location Zone
 735 Wing Landing Gear, LH
 745 Wing Landing Gear, RH

 C.  
Procedure

 S 026-002
 (1)  
Remove the torsion links and the pin assemblies (Ref 32-11-14/401).

 S 226-003

 (2)  
Examine the worn limits of the pins for the upper torsion link and for the lower torsion link, the apex pin, the bearings, and the bushings.

 (a)  
Measure the parts if it is necessary and compare the measured dimensions to the limit dimensions.

 (b)  
If the part is not in the tolerance, repair or replace it when it is necessary.

 S 426-004
 (3)  Install the upper and the lower torsion links and the pin assemblies (Ref 32-11-14/401).
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747-400
MAINTENANCE MANUAL

UPPER TORSION LINK 
BELLCRANK B  A  B  A SHOCK STRUT 
C  C 
LOWER TORSION LINK 

Wing Gear Torsion Links Wear Limits
Figure 601 (Sheet 1)

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747-400
MAINTENANCE MANUAL

TORSION LINK
B-B
TORSION
1. BUSHING/PIN  1. BUSHING/PIN

Wing Gear Torsion Links Wear Limits
Figure 601 (Sheet 2)

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747-400
MAINTENANCE MANUAL

INDEX NO.  PART NAME  DIM.  DESIGN LIMITS  WEAR LIMITS  REPLACE PART WORN  REPAIR WORN PART  INSTR REPAIR 
DIAMETER  DIM. 8 WEAR PER-MITTED  DIA CLEAR-MAX ANCE
MIN  MAX 
1 2  BUSHING  ID  3.2500  3.2515  3.2551  0.0081  X  3 
PIN  OD  3.2470  3.2480  3.2434  X  4 
2  BUSHING  ID  3.2500  3.2515  3.2551  0.0081  X  3 
PIN  OD  3.2470  3.2480  3.2434  X  4 
3 2  BUSHING  5  12.0010  12.0060  12.0210  0.030 9  X  X  7 1 
BUSHING  6  11.991  12.001  11.976  X  X  7 1 
　
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