52-11-12
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A
747-400 MAINTENANCE MANUAL
 TASK 52-11-12-302-031
 6.  Main Entry Door Torque Tube Lower Coupling Repair (Fig. 201)_________________________________________________
 A. General
 (1)  
If you find a crack in the lower coupling, you can install a clamp (Fig. 201) to make the lower coupling stronger. This is a temporary repair. You must install the new lower coupling.

 B.
Consumable Materials

 (1)  
G00286 - Filler Material, Soft Aluminum Sheet 0.05 x 0.80 x 5.50

 (2)  
C00259 - Primer, BMS 10-11, Type I

 C.
Parts

 (1)  
BACC10Y30-8 - Clamp Strap

 (2)  
BACC10X30SF - Clamp Saddle

 (3)  
BACN10JC3 - Nut (2)

 D.
Access

 (1)  
Location Zone
 211 Main Deck Portal to Sta 488, LH
 271 Main Deck, Sta 2040 to Sta 2360, LH

 (2)  
Location Zone
 211 Main Deck Portal to Sta 488, LH
 271 Main Deck, Sta 2040 to Sta 2360, LH

 E.
Procedure

 (1)
Remove the torque tube (Ref to the applicable procedure above).

 (2)  
Apply a layer of the primer to the filler material.

 S 382-034

 (3)  
Wind the filler strip around the coupling.

 (a)  
Put the filler as near as possible to the clamp lug on the coupling.

 S 022-032
 S 372-033
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A 747-400 MAINTENANCE MANUAL
 (4)  S 412-035Install the clamp and the clamp saddle.
 (5)  S 832-036Make sure the clamp and the clamp saddle is as near as possible to the clamp lugs on the coupling.
 (6)  S 432-037Keep the clamp and the clamp saddle on the filler strip and install the nuts.
 (7)  S 422-038Install the torque tube (Ref to the applicable procedure above).

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A
747-400 MAINTENANCE MANUAL
 MAIN ENTRY DOOR HANDLE MECHANISM ASSEMBLY - REMOVAL/INSTALLATION
________________________________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task is the removal of the handle mechanism on the main entry door. The second task is the installation of the handle mechanism on the main entry door.
 B.  You can remove and install the handle mechanism with the entry door installed on the airplane. You can remove the external handles and the center shaft mechanism with the handle mechanism installed. To remove the external handles, you must remove the center shaft from the handle mechanism.
 C.  You can use this procedure to remove and install the handle mechanism, or only the external handles and the center shaft. The necessary steps to replace the handles and the center shaft are in the removal and installation tasks.
 TASK 52-11-13-004-001
 2.  Handle Mechanism Removal (Fig. 401)________________________
 A.  Standard Tools and Equipment
 (1)  
MIT65B13164 Wrench Adapter, Bearing Nut

 B.  
References

 (1)  
52-11-02/401, Main Entry Door Lining and Insulation

 (2)  
DOOR 1; AIPC 52-11-02, AIPC 52-11-07, Fig. 12, AIPC 52-11-11, Fig. 9, AIPC 52-11-13, AIPC 52-11-19, Fig. 5

 (3)  
DOOR 5; AIPC 52-11-02, Fig. 34, AIPC 52-11-07, Fig. 17, AIPC 52-11-13, AIPC 52-11-19, Fig. 8

 C.  
Access

 (1)  
Location Zone
 211 Main Deck, Nose to First Door, LH
 271 Main Deck, Sta 2040 to Sta 2360, LH

 (2)  
Acces Panel
 831L Door - No. 1 Main Entry, LH
　
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