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A 737-300/400/500MAINTENANCE MANUAL
S 214-027
(2) Make sure the data is clear with sharply defined letters which do not cut through the aluminum foil marker.
S 804-003
(3) If it is necessary, trim the aluminum foil marker before you remove the protective backing.
S 804-004
(4) If the placard shows that BMS 5-91 adhesive is used, it is not necessary to prepare the placard. Go directly to the installation steps.
S 844-005
(5) If the placard has no adhesive, prepare the placard as follows: (a) Use abrasive paper to make the rear surface of the placard rough. (b) Clean placard with naphtha cleaner. (c) Remove the release paper from one side of the BMS 5-91 adhesive film.
(d) (e) (f) Apply the adhesive film to the back of the placard.Remove the unwanted film from the rear of the placard.Use one of these steps to bond the adhesive film to the placard:
NOTE:____ This step is not necessary but it does make sure the adhesive film is fully bonded to the placard. Be careful not to move the release paper after you apply heat. The release paper bond will be soft.
1) 2) Use a hot roll laminator (140°F maximum) on the placard.Increase the temperature of the placard to not more than 140°F.
3) NOTE: Use a dry air blast or another heat source.____Rub the release paper side with cheesecloth.
S 844-006
(6) If the placard has an adhesive backing other than BMS 5-91, prepare placard as follows: (a) Remove the release paper from the rear of the placard. (b) Remove the release paper from one side of the BMS 5-91 adhesive film.
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A 737-300/400/500MAINTENANCE MANUAL
(c)
Apply the adhesive film to the rear of the placard.
(d)
Remove the unwanted film from the rear of the placard.
(e)
Bond the adhesive film to the placard with heat as specified in the last step.
S 114-007
(7) Do these steps to clean aluminum surfaces immediately before you install the aluminum foil markers on the aluminum surfaces:
(a) Clean aluminum surfaces that have corrosion as follows:
1) Use a brush, rag, or sponge to clean the surfaces with a solution.
NOTE: The solution must be of one-fourth corrosion remover
____ (MIL-M-10578, Type II) and three-fourths water, by volume.
2) Let the solution stay on the surfaces for approximately one
minute.
3) Rub the area with a moist cheesecloth.
4) Rub the area with a dry cheesecloth until surface is dry
and free of corrosion.
(b) If the aluminum surface has a heavy layer of grease, use a cheesecloth and clean with BMS 3-2 solvent.
S 114-008
(8) Do these steps to clean special surfaces immediately before you install aluminum foil markers:
(a)
Clean aluminized paint (EC-843) coated surfaces as follows: 1) Rub the surface with 180-grit aluminum oxide abrasive
paper.
2) Clean with BMS 3-2, Type I, solvent.
(b)
Clean cork surfaces as follows: 1) Lightly rub the surface with 180-grit aluminum oxide
abrasive paper until you get a clean cork surface. 2) Rub the surface with a clean cheesecloth to remove dust.
S 804-009
(9) Do the steps that follow for these surfaces:
-cadmium-plated surfaces
-
laminated polyester materials without paint
-
laminated phenolic materials without paint
-
laminated rough surfaces without paint.
(a)
Apply a thin layer of the BMS 5-14 adhesive to the clean surface.
(b)
Let the adhesive dry for 5 to 20 minutes.
NOTE: The adhesive must be tacky but must not bond to a clean
____
finger when lightly touched.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 STANDARD PRACTICES(19)
