TM 1-1500-204-23-9 Lifted paint will be flushed by starting at the bottom and working   upward,   keeping   the   flushing   liquids,   off   the unwashed   parts.      After   flushing   thoroughly,   continue cleaning in accordance with TM 55-1500-333-24.  Tape and   loosened   paint   may   be   removed   by   hand   or   by using water under pressure. (6)  Stripping in Confined Locations.  On occasion, it may   be   impractical   to   use   emulsified   paint   remover because    of    complexities    of    assembly    and    rinsing difficulties.    In  these  cases,  remove  acrylic  paint  with solvent    materials    such    as    ethyl    acetate,    Federal Specification TT-E-751, lacquer thinner, Federal Specification    TT-T-266,    or    dichloromethane,    Military Specification  MIL-D-6998.    Remove  polyurethane  paint by mechanical means. WARNING Prolonged    breathing    of    solvent    fumes must     be     avoided     as     serious     health problems  may  result.    Use  only  in  well ventilated areas. 1    Application   of   solvents.      After   appropriate masking,  apply  solvents  with  soft  bristle  brush  or  clean cloth.  Allow solvent to remain on surface until paint has softened and lifted.  To keep the area wet with solvent, it may  be  necessary  to  keep  a  cloth  on  the  surface  and keep the cloth saturated with solvent. 2  Removal of solvents.  Wipe all of the solvent away with a clean damp cloth, frequently rinsing cloth in clean water.  Repeat steps (1) through (3) in paragraph d  as  necessary  until  all  paint  and  residue  have  been removed   from   metal   surface   including   recesses   and around rivets, bolts, etc.  Wipe clean and dry with clean, lint-free cloth, Federal Specification CCC-C-46. (7).        Special    Conditions.        Where    difficulty    is encountered   on   magnesium   surfaces,   paint   may   be removed by following instructions in Military Specification MIL-M-3171. d.    Mechanical  Removal  from  Metals.    Mechanical removal     of     paints     is     recommended     on     non-clad aluminum   alloys,   steel,   copper,   and   titanium   where chemical   removal   would   be   impractical   because   of structural complexities or rinsing difficulties. (1)        Aluminum     and     aluminum     alloys.          The mechanical   removal   method   is   recommended   on   all non-clad aluminum alloys.  Procedures are as follows: (a)    Remove  paint  from  non-clad  aluminum  alloy extrusions,   tubing,   and   ducts   with   an   abrasive   nylon mat,    MIL-A-9962;    Aluminum    wool,    FF-W-1825,    or Federal    Specification    P-P-101,    No.        400,    abrasive paper.  Do not use steel wool. WARNING The   use   of   goggles   or   face   shield   is mandatory since paint particles can break loose and fly off. CAUTION Do  not  use  steel  brush  or  steel  wool  on aluminum  surfaces.    Metal  particles  will be-   come   embedded   in   the   aluminum, causing    corrosion    by    galvanic    action between dissimilar metals. (b)  A hand-operated, air-powered, drill motor with rotary  brass  wire  brush  or  abrasive  flap  brush  may  be used on heavy structural non-clad aluminum alloys. (c)  Wipe area with clean damp cloth followed by wiping dry, with a clean, dry, lint-free cloth.  Areas may be blown with warm, oil-free air or gaseous nitrogen. (2)    Stainless  steel.    Normally  stainless  steel  parts are not painted.  However, if paint is present, it may be necessary   to   remove   it   before   recoating   or   prior   to corrosion removal using the following procedures: WARNING The   use   of   goggles   or   face   shield   is mandatory     when     using     motor     driven brushes. (a)          Mechanical     methods     include     abrasive blasting,  grinding,  and  wire  brushing.    (Obviously,  the severe  abrasive  action  of  abrasive  blasting  or  grinding cannot  be  used  to  remove  paint  from  thin  wall  items). Do   not   use   common   steel   wool   or   wire   brushes   on stainless  steel.    Wire  particles  may  become  embedded in the surface and may later corrode.  Use only stainless steel  wool  or  wire  brushes.    Nonmetallic  abrasive  such as clean silica sand shall be used for abrasive blasting. (b)    After  completing  mechanical  removal,  polish the surface first with Aluminum Oxide, Abrasive Cloth P- C-451, grit size 80 and finish with grit size 240. 9-7