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 NOTE:____ One pound of chemical, O-S-576 in 1 gallon of water will give the necessary solution.
 (d)  Apply the solution with a cloth, mop, brush, or sponge. 1) Make sure the solution goes into the contaminated faying surface joints.
 NOTE:____ A pressure application of the solution can be necessary to flush the faying surface joints and some access areas fully.
 (e)  Apply the solution until bubbles cease in the acid/solution.
 NOTE:____ When the bubbles cease, the acid has become neutral.
 (f) (g) (h) (i)  Then allow the solution to remain on the surface for an additional 5 minutes after the bubbles stop.Remove the solution with mop or sponge.Flush the area with large quantities of clean water. 1) Rub the surface with a soft brush.Do a test of the cleaned aera with litmus paper.
 NOTE:____ The litmus paper should read between 7 and 8 when the area is fully cleaned.
 (j) (k) (l)  Wipe dry with clean cloths.After thoroughly dry, repair or replace damaged finishes if it is necessary. Refer to CPM 20-50-00 and CPM 20-60-00 for protective finish systems.Apply water displacing corrosion preventive compound, BMS3-23, over entire area.
 NOTE:____ For details of application or compound, BMS3-23, refer to CPM 20-60-00.

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 05-51-57
 ALL  ú ú 01 Page 203 ú Feb 15/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.

 

　
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