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Page Title: ELECTRICAL GROUND POINTS.
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TM 5-2420-222-34 1-23. WIRING HARNESS CONNECTOR REPAIR AND REPLACEMENT (Con’t). (8) Insert wire(s) through holes in retaining nut and retainer. (9) Using soldering gun and long roundnose pliers, solder wire(s) onto pins.  Ensure that each connection is solid. (10)  Using long roundnose pliers, push pin(s) into proper hole(s) of connector. (11)  Remove tags from wires. (12)  Push retainer into connector.  Install retaining nut onto connector and tighten. 1-24. ELECTRICAL GROUND POINTS. Many electrical problems are the result of poor ground connections.  You can ensure that ground connections are good by performing the following steps: WARNING Although    battery    disconnect    switch    must    be    on    and    battery    ground    cable connected  to  test  electrical  circuit  voltage,  turn  off  battery  disconnect  switch  or disconnect  battery  ground  cable  before  doing  resistance  tests  or  replacing  parts. This will prevent electrical shock and damage to parts and equipment. (1) Remove hardware connecting ground cable terminal lug to ground point. 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  (46C).    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. (2) Clean  mounting  hardware,  ground  cable  terminal  lugs,  and  ground  point  with  trichlorotrifluoroethane (Item 40, Appendix B) and a scrub brush (Item 3, Appendix B). (3) Remove any rust with a wire brush (Item 4, Appendix B) and crocus cloth (Item 7, Appendix B). (4) Look for cracks, loose terminal lugs, and stripped threads.  Replace any defective parts. (5) Install hardware connecting ground cable terminal lug to ground point.  Ensure that all hardware is tight. 1-12

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