NOTE: Put the flow-resistant fabric between the patch and the
____
 fiberglass screen.

 S 348-112
 (16) Put the patch into the cutout.
 NOTE: Look through the plexiglass to align the marks that you made.
____
 S 348-146
 (17)
 Apply pressure to the plexiglass, as necessary, to make sure the patch is level with the adjacent surfaces.

 S 348-147

 (18)
 Let the patch cure for 24 hours at room temperature, or for 3 hours at 120 (|5)°F.

 (19)
 Put the filler in any cracks that you can see.

 (20)
 Let the filler cure.

 S 348-017
 S 348-019
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747-400 MAINTENANCE MANUAL
 S 348-018
 (21)
 Apply masking tape to the area around the repair.

 S 348-069

 (22)
 Rub the filler with 240-320 grit abrasive paper until it is smooth and level with the adjacent surfaces.

 S 378-021

 (23)
 Apply silk screen ink of the correct color to match the adjacent area.

 S 378-022

 (24)
 Let the ink dry.

 S 348-115

 (25)
 Drill holes to make perforations if it is necessary.

 NOTE: Use a piece of perforated material for a template.
____
 F. Apply Decorative Tedlar to Acoustical (Perforated) Panels
 S 288-023
 (1)  
Remove the trim strips from the panel.

 S 348-024

 (2)  
Rub the area where you will apply the adhesive with abrasive paper until the area is not glossy.

 S 118-025

 (3)  
Clean the area with a cheesecloth that is moist with naphtha.

 S 118-026

 (4)  
Dry the area with a clean cheesecloth.

 S 118-027
 WARNING: DO NOT GET METHYL ETHYL KETONE (MEK) IN YOUR MOUTH OR EYES, OR
_______ ON YOUR SKIN. DO NOT BREATHE THE FUMES FROM MEK. PUT ON A PROTECTIVE SPLASH GOGGLE AND GLOVES WHEN YOU USE MEK. KEEP MEK AWAY FROM SPARKS, FLAME, AND HEAT. MEK IS A POISONOUS AND FLAMMABLE SOLVENT WHICH CAN CAUSE INJURY OR DAMAGE.
 (5)  
Mix (by volume) one part BMS 5-30 adhesive with one part MEK.

 (6)  
Carefully apply the mixture to the surface with a brush.

 S 348-116
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747-400 MAINTENANCE MANUAL
 S 378-029
 CAUTION: THE SURFACE MUST BE FULLY DRY BEFORE YOU INSTALL THE TEDLAR
_______ LAMINATE. IF YOU INSTALL THE TEDLAR LAMINATE TO A WET SURFACE, YOU WILL NOT GET A SATISFACTORY BOND.
 (7)  Let the surface dry at room temperature for a minimum of 2 hours.
 S 208-030
 CAUTION: MAKE SURE THE DECORATIVE TEDLAR LAMINATE HAS THE CORRECT
_______ COLOR AND PATTERN. THE REPAIR WILL NOT BE SATISFACTORY IF THE NEW TEDLAR LAMINATE IS NOT CORRECT.
 (8)  Put the decorative tedlar laminate in position.
 NOTE: Use masking tape to hold the decorative tedlar laminate in
____ the correct position. If you use perforated tedlar for the repair, align the holes in the tedlar with the holes in the panel you will cover.
 S 888-031
 CAUTION: BE CAREFUL WHEN YOU APPLY HEAT NEAR MATERIALS THAT CAN BURN.
_______ THE TEMPERATURE OF THE TEDLAR MUST NEVER BE MORE THAN 200°F OR THE TEMPERATURE AT WHICH THE TEDLAR DISTORTS, WHICHEVER IS LOWER. TOO MUCH HEAT CAN CAUSE DAMAGE TO THE TEDLAR.
 (9)  Use the heat gun to increase the temperature of the tedlar laminate.
 NOTE: Be careful to make sure the temperature is constant across
____ the surface of the laminate. Refer to 20-11-25/201 for cautions to obey when you use heat guns.
 S 338-045
 (10) Do these steps to use a vacuum to make sure the laminate touches all of the panel:
 (a)  
　
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