TM 1-1500-204-23-3 (h)    Apply    a    uniform    coat    of    barrier adhesive  (item  2,  table  2-11  )  (1,  figure  2-32)  in  one direction  over  previous  coat  of  repair  adhesive  (2)  to within no more than 1/4 inch of repair area of O.D.  Use a  brush.    Remove  any  excess  adhesive  from  unbuffed area.    Use  dean  cloth  (item  16,  table  2-11)  dampened with acetone (item 3, table 2-11).  Wear gloves (item 4, table 2-11).  Allow barrier to dry to touch. Figure 2-32.  Applying Adhesive Over Previous Coat (i)    Apply    a    second    coat    of    barrier adhesive  (3)  over  first  barrier  coat  (1)  at   90 ° to   the application  of  first  coat.    Use  a  brush  (item  6,  table  2- 11).    Allow  second  coat  to  air  dry  for  approximately  30 minutes. (j)    Prepare repair adhesive as in steps (e) and (f). CAUTION When smoothing adhesive surface   with   gloved   fingers   wet with   acetone,   lightly   touch   only the surface of the adhesive. Insure  acetone  does  not  contact barrier cement previously applied, as the barrier cement is soluble in acetone.      Damage   to   the   barrier cement   can   result   in   the   barrier being damaged. (k)    Prepare   a   new   batch   of   adhesive (item   1,   table   2-11)   and   carefully   apply   a   uniform (liberal/heavy) coat of adhesive mixture (1, figure 2-30) over   previous   coats   of   barrier   adhesive   to   within   no more than 1/18 inch of O.D.  of buffed edge area.  Use a   brush   (item   6,   table   2-11).      Smooth   surface   with gloved fingers wet with acetone (item 3, table 2-11) and remove  any  excess  adhesive  from  unbuffed  area  Use dean cloth dampened with acetone (item 3, table 2-11). Wear gloves (item 4, table 2-11). NOTE When   performing   interior   loose seam damage repair, do not apply fabric patch.  Proceed to para (m). (I)    Cut  a  fabric  patch  (item  8,  table  2- 11)  that  is  1/8  inch  larger  all  around  than  the  area  of barrier coverage.  Dampen patch with acetone (item 3, table 2-11), shake out excess solvent and lay the patch into  the  wet  adhesive.    Using  gloved  finger  and  brush, work out all air.  Allow to air dry for 30 minutes. (m)    Apply a light coat of adhesive (item 1,  table  2-11  )  over  the  fabric  patch  and  out  to  the maximum  area  having  barrier  adhesive.    Do  not  apply adhesive to unbuffed areas. CAUTION Do not flex fuel cell in repair area. (n)    Allow   finished   repair   to   set   for   1 hour before moving fuel cell. (o)    Allow  finished  repair  to  air  cure  for 24 hours at room temperature of 70 °F (33°C) minimum before use. (2) Visually   inspect   repair   for   workmanship, no loose edges, no voids and adhesive fully cured. f. Repair Fuel Cell Interior Plies. WARNING Acetone,    barrier    cement,    repair adhesives and its components are flammable   and   toxic.      They   can irritate skin and cause bums.  Use only with adequate ventilation and wear a NIOSH approved air- purifying    respirator    for    organic vapors.    Keep  away  from  heat  or open flame.  Wear safety glasses, gloves  and  protective  clothing  to avoid contact with skin, eyes and clothes.    I  contact  occurs,  flush areas  with  water  and  get  medical attention for eyes. Change 2  2-50