TM 55-4920-328-13 Section VI.  MINOR REPAIR INSTRUCTIONS 6-27.  General. Certain components of the METS system may be repaired  by  replacement  of  detail  parts  or  using  bulk items,  particularly  when  the  assembly  is  considered  a high-value item. Note For consumable materials not listed in the    following    instructions,    refer    to table 1-8. 6-28.  Cable Assemblies. Repair   cable   assemblies   on   a   temporary   basis until  a  new  part  may  be  procured.    Repair  defective cable   assemblies   using   good   shop   practice   and   in accordance with the following: a.    Disconnect  broken  wires  from  the  associated connector pin or terminal plug. b.  Attach a new wire in place of the broken wire run  to  the  existing  connector  pin,  using  a  new  terminal lug  when  applicable.    If  the  connector  pin  is  damaged beyond use, in some cases a spare pin in the connector may  be  used  for  connection  of  the  new  wire.    If  this practice   is   followed,   it   is   mandatory   that   the   mating connector be rewired accordingly and an entry made in the  maintenance  log  to  this  effect.    Use  the  electrical schematics  depicted  in  figures  FO-2  through  FO27  to trace wiring of the circuits in the system. c.    Replace  damaged  cable  marking  sleeves  by using   a   new   sleeve   of   like   part   number.      Install   the replacement sleeve using the cement specified in table 1-8.        Add    cable    markings    using    black    waterproof marking   enamel   conforming   to   FED-STD595.      When dry,   cover   the   characters   with   clear   acrylic   lacquer conforming to Specification MILL-19537 and allow to dry thoroughly. 6-29.  Painting. Repair  damaged  painted  areas  on  external  sheet metal panels as follows: a.        Mask    adjoining    unpainted    surfaces    with Specification QQ-T-106 masking tape. b.  Use successively finer grades of Specification P-P-101   sandpaper,   to   abrade   the   damaged   painted area to a feather edge. WARNING Use  solvent  in  a  well-ventilated  area. Avoid breathing fumes and skin contact.  Keep away from open flame. Wear protective respiratory equipment and clothing prescribed by base safety regulations. c.  Clean the abraded area using Specification P- D-680 dry-cleaning solvent.  Wipe dry with a clean cloth conforming to Specification CCC-F46. d.        For    aluminum    parts,    apply    a    coating    of chemical film conforming to Specification MIL-C5541. e.      For   steel   parts,   apply   a   mild   solution   of Specification O-C-303 chromic acid.  wipe dry, and then neutralize   the   surface   with   an   application   of   a   mild solution   of   Specification   O-S-598   sodium   hydroxide. Rinse with clean hot water and dry thoroughly. f.        Spray    paint    a    uniform    undercoating    of Specification   MIL-P-8585   zinc   chromate   primer   and allow to dry thoroughly. g.        Apply    an    even    coating    of    finish    paint conforming   to   Specification   TT-E-529,   Class   A,   color No.  X24087. h.    Restore  obliterated  reference  designation  ink markings using black waterproof marking ink (Specification TT-1-528) and rubber stamps conforming in size to the illegible markings.  Cover the ink markings with   a   coat   of   clear   acrylic   lacquer   conforming   to Specification MIL-L-19537. 6-30.  Nutplates, Fasteners and Springs. Replace damaged nutplates, Dzus fasteners, and mating springs as follows: a.    Use  an  appropriate  size  high  speed  drill  in  a 1/4-inch   capacity   electric   drill,   to   remove   the   rivets which   attach   the   defective   part   to   the   sheet   metal structural component. b.  Remove the burrs around the drilled holes and apply    a    light    coating    of    Specification    MIL-C5541 chemical  film  to  the  bare  metal,  if  aluminum.    If  the structural    part    is    steel,    apply    a    light    coating    of Specification  MIL-P-8585  zinc  chromate  primer  to  the immediate area. 6-22