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(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 area 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 BMS 3-23, over entire area.
NOTE:____ For details of application of BMS 3-23 refer to CPM 20-60-00.
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757 AMM 飞机维护手册 时间限制/维护检查(62)
