747-400 AMM 飞机维护手册 EQUIPMENT/FURNISHINGS 2(139)

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 (a)  Mix 50 parts (by weight) of the component A formula (step (2)) with 50 parts (by weight) of the component B formula (step (3)).
 H. Repair the cargo lining with the adhesives and the patch or doubler.
 NOTE: Cotton gloves must be used when you touch the cargo lining
____ materials after you clean them. The mating surfaces of the materials must be dry of all the solvent before you apply the adhesives.
 S 348-026
 (1)  Apply a thin, continuous layer of the Type II adhesive to the mating surfaces of the lining materials.
 NOTE: A spatula or putty knife can be used to apply the adhesive.
____
 S 348-027
 (2)  Put the patch or doubler on the damaged area of the cargo lining while you apply pressure to it.
 NOTE: If it is necessary, clamps can be used to apply the pressure
____
 until the adhesive dries fully.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 747-400 MAINTENANCE MANUAL
 (3)  S 348-028Apply a layer of the Type III adhesive around the edges of the repair surface.
 NOTE:____ The edges of the repair surface must be smooth after you apply the adhesive.
 (4)  S 118-029Remove the unwanted adhesives from the repair surface with a cheesecloth or wiper that is moist with the solvent.
 NOTE:____ The solvent must not flow in the bond area.
 (5)  S 118-030Clean the tools with the Toluene before the adhesives dry fully.
 NOTE:____ The Methylene Chloride can clean the tools if the adhesives dry fully on the tools.
 (6)  S 348-031Let the adhesives dry for one of these lengths of time which follow: (a) Let the adhesives dry for 24 hours at a temperature of 70°F (b) Let the adhesives dry for 15 minutes (minimum) at a temperature of 250°F (maximum).
 NOTE:____ A heat lamp (250-watt) can be used to apply heat to the repair surface to get the maximum temperature.
 (7)  S 348-032Remove the pressure of the clamps which you applied to the repair surface.
 NOTE:____ The adhesives must dry fully and the temperature of the repair surface be below 100°F before you remove the pressure.

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 S 348-033
 (8)  Use the abrasive paper to lightly remove the unwanted adhesives and to make the edges of the repair surface smooth.
 NOTE: You must be careful not to remove the white Tedlar surface
____ from the repair surface of the lining materials.
 S 348-034
 (9)  
Make sure there are no loose fibers of the glass fabric laminations which come out of the lining materials.

 S 428-035

 (10)
 Install the cargo lining if you removed it to do the repair (Ref 25-59-01/401).

 TASK 25-59-00-308-036
 5.  Flexible Cargo Lining Permanent Repairs_______________________________________
 A. General
 (1)  
This procedure gives the instructions to repair the flexible cargo linings. This procedure uses a patch and an adhesive to repair the cargo lining. The patch must be made from the same material as the cargo lining. A cargo lining with tears or holes must have a patch installed on each side of the damaged area. The procedure has these parts:

 (a)  
Prepare the cargo lining

 (b)  
Prepare the patch

 (c)  
Prepare the adhesive

 (d)  
Repair the cargo lining with the adhesive and the patch.

 

 (2)  
When the airplane is down for an overhaul, the cargo linings which have temporary repairs must be permanently repaired.

 WARNING: OBEY THE INSTRUCTIONS FROM THE INDUSTRIAL HYGIENE, FIRE, AND
_______ SAFETY ORGANIZATIONS FOR THE NECESSARY PROCEDURES AND EQUIPMENT WHEN YOU USE ADHESIVES AND SOLVENTS. DO NOT GET THE ADHESIVES AND SOLVENTS IN YOUR MOUTH OR EYES, OR ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM THE ADHESIVES AND SOLVENTS. USE A PROTECTIVE SPLASH GOGGLE, GLOVES, AND A RESPIRATOR (IN CONFINED AREAS) WHEN YOU USE THE ADHESIVES AND SOLVENTS. KEEP THE ADHESIVES AND SOLVENTS AWAY FROM ALL SOURCES OF IGNITION (HEAT, FLAME, AND SPARKS). THE ADHESIVES AND SOLVENTS YOU USE ARE POISONOUS AND FLAMMABLE. IF YOU DO NOT USE THE CORRECT PROCEDURES AND EQUIPMENT, INJURY TO PERSONS OR DAMAGE TO THE EQUIPMENT CAN OCCUR.
　
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