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51-21-11
ALL ú ú B01 Page 708 ú Nov 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
INTUMESCENT (HEAT PROTECTIVE) FINISH - CLEANING/PAINTING
________________________________________________________
1. General
_______
A. This procedure contains the task to apply the intumescent paint on the fiberglass material.
TASK 51-21-12-307-004-B00
2. Intumescent (Heat Protective ) Finish Application
_________________________________________________
A. Standard Tools and Equipment
(1) Spray gun (Commercially available)
B. Consumable Materials
(1)
G02180 Brush - Paint, Nylon or Bristle
(2)
G00371 Brush - Soft Bristle
(3)
B00061 Solvent - Methylene Chloride, MIL-D-6998
(4)
G00382 Paper - Abrasive, Aluminum Oxide, 240 Grit or Finer
(5)
G02045 Pad - Scotchbrite, Type A, 240 Grit or
Finer
(6)
G00977 Paper - Silicon Carbide, Scotchbrite
Type S
(7)
C00371 Paint - Intumescent, AVCO 1600 BTX Component A (Base)
(8)
C00371 Paint - Intumescent, AVCO 1600 BTX Component B (Hardener)
(9)
C00259 Primer - BMS 10-11, Type I
C. References
(1) 51-21-21/701 - Prepaint Cleaning and Treatment
D. Prepare the Surface
S 117-001-B00
(1) Clean and prepare the surface (Ref 51-21-21/701).
E. Prepare the Primer
S 377-002-B00
(1) Refer to manufacturer's instructions to mix the primer.
NOTE: Do not move or touch the primer for 30 minutes before you
____
use it.
S 937-003-B00
(2) Identify the container with a label.
(a) Write the date and hour when the mixture was mixed and when the pot life comes to an end.
S 377-014-B00
(3) The pot life of the primer after you mix it is as follows: Below 80°F 18 hours 80°-85°F 12 hours Above 85°F 8 hours
F. Prepare the Intumescent Finish
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
51-21-12
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
1 3 5 7 911 13 15 MINUTES
CURE WITH INFRARED LAMPS
240
TEMPERATURE (`F)
200
160
120
80
40
CURE WITH NORMAL AIR
Cure Charts - Primer BMS 10-11, Type I
Figure 701
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51-21-12
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 377-007-B00
WARNING: DO NOT GET THE BASE, HARDENER, AND THINNER MATERIALS IN YOUR
_______ MOUTH, IN YOUR EYES, ON YOUR SKIN, OR ON YOUR CLOTHES. DO NOT BREATHE THE FUMES FROM THESE MATERIALS. MAKE SURE THE AIR FLOWS FREELY THROUGH THE WORK AREA. USE THE NECESSARY RESPIRATORY PROTECTION. KEEP THESE MATERIALS AWAY FROM SPARKS, FLAME, AND HEAT. THESE MATERIALS ARE POISONOUS AND FLAMMABLE AND CAN CAUSE INJURY OR DAMAGE.
WARNING:_______DO NOT USE A PAINT SHAKER TO MIX THE AVCO 1600 BTX PAINT. THE PAINT IS POISONOUS AND FLAMMABLE AND CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
CAUTION: MAKE SURE YOU MIX THE AVCO 1600 BTX COMPONENTS CORRECTLY.THE
_______ MIXTURE RATIO BETWEEN COMPONENTS A (BASE) AND B (HARDENER) OF THE AVCO 1600 BTX IS VERY IMPORTANT WHEN YOU APPLY THE FINISH. THE POT LIFE IS 1 HOUR AT 70° TO 80° FAHRENHEIT FOR A 1-QUART VOLUME OF THE MIXED COMPOUND. MIX THE COMPOUNDS AFTER YOU LET THE PRIMER DRY. AN INCORRECT MIXTURE CAN CAUSE AN UNSATISFACTORY FINISH.
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