TM 10-3930-659-20 2-21. ELECTRICAL GROUND POINTS (Con't). (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. 2-22. LINES AND PORTS. To keep dirt from contaminating fluid systems when removing and installing hydraulic, fuel, oil, and coolant lines, perform the following steps: (1) Clean fittings and surrounding area before disconnecting lines. (2) Cover, cap, plug, or tape lines and ports after disconnecting lines.  When these are not available, use hand-carved wooden plugs, clean rags (Item 27, Appendix C), duct tape (Item 35, Appendix C), or other similar materials to prevent dirt from entering system. (3) Ensure that new and used parts are clean before installing. (4) Wait to remove cover, cap, plug, or tape from lines and ports until just before installing lines. 2-23. ANTISEIZING TAPE. When connecting hydraulic, fuel, and oil lines and fittings without compression sleeves or packings, antiseizing tape (Item 34, Appendix C) may be used to keep connections from leaking.  Use as follows: (1) Ensure that threads are clean and dry. (2) Start    antiseizing    tape    one    or    two threads from small or leading edge of fitting, joining tape together with an overlap of about X in.  (3.18 mm) for fit- tings with fine threads.  For fittings with coarse threads, tape  should  be  wrapped  around  threads  two  or  three times. (3) Tightly  wrap  antiseizing  tape  in  same direction  as  you  would  tighten  a  nut.    Tape  must  be pressed into threads without cutting or ripping. CAUTION DO   NOT   exceed   specified   torque   or   use power  tools  to  tighten  fittings  taped  with antiseizing    tape.        Overtightening    could damage fitting threads and cause connection  to  leak.  (4)  Using  hand  tools, tighten fittings to specified torque. TA706717 2-12