(g)
Remove all sharp paint edges with a hardwood stick, then lightly rub the surface or part with 180-grit abrasive paper. Be careful not to cause damage to the aluminum skin.
S 377-023
(4) Do these steps to apply the abrasion-resistant teflon coating with a brush:
WARNING: DO NOT GET THE TEFLON COATING IN YOUR MOUTH, IN YOUR EYES,
_______ ON YOUR SKIN, OR ON YOUR CLOTHES. DO NOT BREATHE THE FUMES FROM THIS MATERIAL. MAKE SURE THE AIR FLOWS FREELY THROUGH THE WORK AREA. USE THE NECESSARY RESPIRATORY PROTECTION. KEEP THIS MATERIAL AWAY FROM SPARKS, FLAME, AND HEAT. THIS MATERIAL IS POISONOUS AND FLAMMABLE AND CAN CAUSE INJURY OR DAMAGE.
(a) Mix the abrasion-resistant teflon coating as follows:
1) Add 3 parts (by volume) of the resin component 7-W-27 FC or 7-X-74 FC to 1 part (by volume) of the hardener.
NOTE: The abrasion-resistant coating is supplied in a kit.
____ The kit has a resin component, 7-W-27 FC (white) or 7-X-74 FC (grey), and a hardener component, 10-C-81.
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2) Manually mix the components.
NOTE:____ Do not shake the mixture. if you shake the mixture. unsatisfactory finish. You will get air bubblesAir bubbles will make an
3) If it is necessary, add 66-C-20 reducer to make the mixture thin.
NOTE:____ Add 66-C-20 reducer to a maximum of 20 percent by volume.
4) Make sure you use the mixture in 5 to 10 minutes after it is mixed.
NOTE:____ The pot life of the mixture is 45 minutes at 70°F.
5) Apply the abrasion-resistant teflon coating in one direction with a brush.
NOTE:____ Make sure the maximum dry thickness is 6 to 8 mils (0.006 to 0.008 inch).
6) 7) Let the coating dry for 30 minutes between each layer.Let the last layer cure for 8 hours (minimum) at 70°F before flight.
NOTE:____ If you use a heater, the time to cure the surface will decrease. Do not let the finish get hotter than 140°F.
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MAINTENANCE MANUAL
TEMPERATURE (`F)
160`
130`
100` 90`
70`
50`
NOTE:
MINIMUM CURE
TEMPERATURE
TIME (HOURS)
DO NOT USE THIS CHART WITH FC MATERIALS (BRUSH TEFLON).
U22944
Cure Chart for Teflon Finish
Figure 701
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ABRASION RESISTANT TEFLON COATING - REPAIRS
___________________________________________
1. General_______
A. This procedure contains one task. The task is to repair the abrasion resistant teflon finish.
TASK 51-24-04-308-001
2. Repair the Abrasion Resistant Teflon Finish___________________________________________
A. Consumable Materials
(1)
C00008 Reducer - 66-C-28
(2)
B00094 Solvent - Toluene, TT-T-548
(3)
G00034 Cheesecloth - Clean and lint-free
(4)
G00382 Abrasive Paper, aluminum oxide, 280-grit minimum
(5)
G00270 Masking Tape - Commercially available
B. References
(1) AMM 51-24-04/701, Abrasion Resistant Teflon Finish -Cleaning/Painting
C. Procedure
S 958-002
(1)
Apply masking tape around the damaged area.
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