TM 10-3930-659-34 2-16.  SOLDERING. WARNING Cleaning compound, trichlorotrifluoroethane, for electrical parts is toxic and flammable, and  reacts  violently  with  aluminum,  titanium,  barium,  lithium,  samarium,  sodium,  and potassium.  Always wear protective goggles and rubber gloves, and use only in a well- ventilated area.  DO NOT wear jewelry while using cleaning compound.  Avoid contact with skin, eyes, and clothes, and DO NOT breathe vapors.  Cleaning compound fumes or  vapors  can  take  the  place  of  air  and  may  become  a  cancer  producing  agent.    DO NOT use near open flame or excessive heat.  The compound's boiling point Is 114°F (46°C).  If you become dizzy while using cleaning compound, immediately get fresh air and medical help.  If compound contacts eyes, immediately wash your eyes with water and get medical aid. CAUTION Use  low  wattage  soldering  gun  when  soldering  electrical  wires,  connectors,  terminal lugs, and receptacles.  High wattage soldering guns may damage parts by overheating. a.   Solder connection must be bright and clean before soldering.  Remove dirt and grease with trichlorotrifluoroethene (Item 55, Appendix B).  Solder used must be of lead alloy (Item 46, Appendix B) with soldering flux (Item 27, Appendix B).  All wires, parts, and soldering gun (Item 60, Appendix E) must be tinned for good connection and maximum transfer of heat. b.   To   prevent   overheating   damage   to   electrical   parts   when   soldering   and   unsoldering connections, hold bare wire, lead, or terminal lug close to soldering point with long roundnose pliers (Item 71, Appendix E).  Pliers act as heat sink and absorb excess heat. WARNING Cleaning compound, trichlorotrifluoroethane, for electrical parts is toxic and flammable, and  reacts  violently  with  aluminum,  titanium,  barium,  lithium,  samarium,  sodium,  and potassium.  Always wear protective goggles and rubber gloves, and use only in a well- ventilated area.  DO NOT wear jewelry while using cleaning compound.  Avoid contact with skin, eyes, and clothes, and DO NOT breathe vapors.  Cleaning compound fumes or vapors can take the place of air and may become a cancer producing agent.    DO NOT use near open flame or excessive heat.  The compound's boiling point is 114°F (460C).  If you become dizzy while using cleaning compound, Immediately get fresh air and medical help.  If compound contacts eyes, Immediately wash your eyes with water and get medical aid. c.   Clean  all  solder  joints  with  a  scrub  brush  (Item  5,  Appendix  B)  and  electrical  parts  with trichlorotrifluoroethane (Item 55, Appendix B) after soldering to get a bright, clean surface. 2-9