TM 1-41500-204-23-4 Figure 3-7.  Potting Connectors (4)  Check  fuses  in  associated  circuitry  for correct current rating. (5)   Ensure   installation   of   MS3057   cable damp  adapters  on  all  MS  connectors  except  those  that are moisture-proof. (6) Ensure that vinyl tape is wrapped around wires in MS3057 cable damp adapters so that tightening of  the  cable  damp  adapter  cap  provides  sufficient  grip on  the  wires  to  keep  tension  from  being  applied  to  the connector pins. (7) Ensure that unused plugs and receptacles are covered with moisture-proof paper, tied with  waxed  cord,  and  appropriately  tagged  to  indicate the circuit or accessory with which associated.  The units will then be secured with damps to the aircraft structure or to other wiring that is properly anchored. (8)   Ensure   that   the   coupling   nut   of   AN connectors  is  lockwired  as  required  by  the  applicable aircraft maintenance handbook. (9)    Ensure    that    moisture-absorbent    type material   is   not   used   as   fill   for   MS3057   damps   or adapters. (10)   Ensure   that   there   is   no   evidence   of deterioration of potting compound in potted connectors. (11) Replace cracked dielectric inserts. c.      Installation   of   Connectors   on   Wires.      The following   paragraphs   describe   how   solders   and   other fastening means are matched to the wire type and to the installation as follows. (1)   Soldering.      Soldering   is   used   for   tin- coated   copper   wire,   coaxial,   cable,   and   silver-coated copper wire. (a) Tin-lead solder.  Soft solder-60/40 tin-lead  (Federal  Specification  QQ-S-571,  composition Sn 60) is used for fin-coated copper wire and for coaxial cable. (b)   Lead-silver   solder.      Soft   solder- lead-silver (Federal Specification QQ-S-571, composition Ag 2.5 or Ag 5.5) is used for silver-coated copper wire. NOTE Solder  cup  contacts  are  silver  or gold plated to provide low contact resistance.  Silver plated contacts have pretinned solder cups.  Gold plated  contacts  are  not  pretinned because the gold prevents oxidation  and  is  therefore  always easy to solder. (2)  Crimping.    Crimp  connections  are  used for   nickel-dad   copper   wire,   and   tin,   silver,   or   nickel coated copper wire. 3-4.        Electrical    System    Components.        Various electrical system components used in Army aircraft are explained in the applicable maintenance manual. a.   Storage Battery.  The battery provides engine starting   power,   back-up   emergency   power,   and   gun drive  power  during  firing  of  the  turret  weapons.    The battery installation usually includes vent tubes, eyebolts for attaching tiedown rods, and a battery cable. (1)     Inspection.          Inspect     for     corrosion, overheating,   and   overcharging.      Every   120   days   or every 100 flight hours, remove the battery and return to direct 3-13