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51-24-03
ALL ú ú 01 Page 706 ú Jun 18/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
ABRASION-RESISTANT TEFLON COATING - CLEANING/PAINTING
_____________________________________________________
1. General_______
A. This procedure contains one task. The task is to apply
abrasion-resistant teflon coating.
B. You can apply abrasion-resistant teflon coating with a spray gun or a brush. Abrasion, chemical, and solvent resistant finishes are applied to worn surfaces.
C. Apply abrasion-resistant teflon coating on BMS 10-11, Type 1 primers or BMS 5-89 primers unless you know differently. Use the thickness that is specified. When no thickness is specified, apply abrasion-resistant teflon coating to a dry thickness of 5 to 10 mils (0.005 to 0.010 inch). You can use a total dry thickness of 20 mils (0.020 inch) maximum if it is approved by specification. You can also use the 20 mils dry thickness for the replacement of solid (phenolic) rubstrips.
D. Use a spray gun if one is available and the area to coat is not too small. You can also use a spray gun if the solution's pot life is less than 45 minutes.
E. Use a brush if the area to coat is too small. Also, use a brush when the time to dry must be less than 1 to 2 hours.
F. Make sure that you use the correct type of equipment. Make sure the equipment is clean. Make sure the coating is applied equally on the surface.
TASK 51-24-04-107-001
2. Apply Abrasion-Resistant Teflon Coating_______________________________________
A. Equipment
(1)
Rigid bristle brush - Commercially available
(2)
Wooden or plastic scraper - Commercially
available
(3)
Vacuum - Commercially available
B. Consumable Materials
(1) Laminar teflon coating kit - colors white or
gray ~................................................... |C00304 |X-500 Coating Kit - Color W | | |(White) | | | SPRAY | | |Resin Component 7-W-27 | | |Hardener 10-C-81 | .....................................................
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
51-24-04
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
747-400 MAINTENANCE MANUAL
~................................................... |C00304 |C-500 Coating Kit - Color G | | |(Gray) | | | SPRAY | | |Resin Component 7-X-74 | | |Hardener 10-C-81 | ..................................................... |C00306 |X-500 Coating Kit - Color W | | |(White) | | | BRUSH | | |Resin Component 7-W-27FC | | |Hardener 10-C-81 | ..................................................... |C00306 |C-500 Coating Kit - Color G | | |(Gray) | | | BRUSH | | |Resin Component 7-X-74FC | | |Hardener 10-C-81 | ..................................................... |C00259 |Primer - BMS 10-11, Type 1 | 2........…..........................................1
(2)
Reducers - Laminar Teflon Coating Kit ~................................................... |C00304 |66-C-28 - (For spray application) | ..................................................... |C00008 |66-C-20 - (For brush application) | 2........…..........................................1
(3)
Solvents ~................................................... |B00154 |Toluene - TT-T-548 (JAN-T-171, | | |Grade A, optional) | ..................................................... |B00154 |Methyl Isobutyl Ketone (MIBK) -| | |TT-M-268 | ..................................................... |B00083 |Cleaning Solvent - General | | |Purpose BMS 3-2, optional: | | |Aliphatic Naphtha, TT-N-95 | .....................................................
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