(7)  
B00344 Cleaner - Xylene, TT-X-916

 (8)  
B00153 Solvent - Toluene (Toluol), TT-T-548

 (9)  
B00189 Solvent - Thinner, TL-52

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-24-17
 ALL  ú ú 03 Page 701 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
 (10) B00000 Solvent - Methyl Isobutyl Ketone (MIBK), TT-M-268
 E. Storage
 S 917-010
 (1)  Keep all the coating materials in the building at temperatures between 40 to 80°F. The shelf life is 12 months from the date of the manufacture.
 F. Paint the Nose Radome
 S 117-009
 WARNING:_______THE COATING MATERIALS ARE TOXIC AND FLAMMABLE. HAVE SUFFICIENT VENTILATION AND CORRECT FIRE PRECAUTIONS WHEN YOU MIX AND APPLY THE MATERIALS.
 (1)  Miscellaneous Data
 (a)  
The coating materials must be same and free of coarse particles.

 (b)  
Make sure the coating materials have a lint and bubble free, smooth and continuous layer of the necessary film thickness.

 (c)  
Make sure you do not apply the coating on the rubber paint.

 (d)  
Make sure the laminate surface to be coated is smooth and bubble free.

 (e)  
If you can not see the small bubbles in the final coat, do not reject the coating materials.

 S 127-003
 (2)  Prepare the Surface
 WARNING: DO NOT GET SOLVENTS IN YOUR MOUTH, OR YOUR EYES, OR ON
_______ YOUR SKIN. DO NOT BREATHE THE FUMES FROM SOLVENTS. SOLVENTS ARE HAZARDOUS MATERIALS. SOLVENTS MAY BE FLAMMABLE OR HARMFUL TO THE ENVIRONMENT. REFER TO PRODUCT MATERIAL SAFETY DATA SHEETS (MSDS) AND LOCAL REQUIREMENTS FOR PROPER HANDLING PROCEDURES.
 CAUTION:_______DO NOT LET THE SOLVENT TOUCHE THE ASTROCOAT TOO LONG. THE COATING WILL BECOME LARGER.
 (a)  
On the radomes which are coated with Astrocoat before, clean the surface fully with solvent, Series 94 (AMM 20-30-94/201).

 (b)  
On the radomes which are coated with other coating but the Astrocoat, prepare the surface as follows: 1) Before you use the sand paper on the surface, remove the

 remaining materials from the surface to be coated with clean cheesecloth that is moist with Toluene or Xylene.
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 51-24-17
 ALL  ú ú 03 Page 702 ú Oct 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400
MAINTENANCE MANUAL

 2)  Clean the surface dry with clean cheesecloth.
 3)  Use the sand paper with 180 grit or finer abrasive on the surface to be coated to remove the coatings or glossy finish of the laminate.
 4) Clean the laminate with clean cheesecloth to remove the dirt. 5) Clean the surface to be coated with clean cheesecloth that is moist with Toluene or Xylene. 6) Clean the surface dry with dry cheesecloth.
 S 377-004
 (3)  Mix and Apply the Primer
 NOTE: The primer is supplied in Astrocoat kit 7100.
____
 (a)  
Shake the primer base fully.

 (b)  
Add one part by volume of accelerator to one part by volume of base, while you mix the base.

 (c)  
Put the label on the container immediately after you mix, with the information on the date and the time when you mix and the expired time of the pot life.

 NOTE: The pot life at 75 |5°F is 8 hours from the time
____ you mix. Discard the material of the pot life that is expired.
 (d)  Mix with the thinner as it is necessary to get a viscosity of 27 to 29 seconds measured with a No. 2 Zahn cup.
 NOTE: The maximum ratio of the thin is one part by volume of
____ thinner to one part by volume of base.
 (e)  
Let the primer dry for 15 minutes minimum.

 (f)  
Use the brush or spray gun to apply the primer to get a dry film thickness of 1.0 |0.5 mil.

 (g)  
Let the primer dry at 75 |5°F for a minimum of 2 hours and a maximum of 18 hours before you apply the erosion coating.