TM 5-4310-451-14
4-24.
ELECTRICAL GROUND POINTS (Con’t).
WARNING
Dry cleaning solvent, P-D-680, is toxic and flammable. Always wear protective goggles and
gloves, and use only In a well-ventilated area. Avoid contact with skin, eyes, and clothes, and DO
NOT breathe vapors. DO NOT use near open flame or excessive heat. The solvent’s flash point Is
100°F-138°F (38°C-59°C). If you become dizzy while using cleaning solvent, Immediately get fresh
air and medical help. If solvent contacts eyes, Immediately wash your eyes and get medical aid.
(2)
Clean mounting hardware, ground cable terminal lug, and ground point with dry cleaning solvent (Item
38, Appendix E) and scrub brush (Item 7, Appendix E).
(3)
Remove any rust with wire brush (Item 9, Appendix E) and abrasive cloth (Item 10, Appendix E).
(4)
Look for cracks, loose terminal lug, and stripped threads. Replace any defective parts.
(5)
Install hardware connecting ground cable terminal lug to ground point. Ensure that all hardware is
tight.
4-25.
LINES AND PORTS.
To keep dirt from contaminating fluid systems when removing and installing 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 35, Appendix E), duct tape (Item 42, Appendix E), or other similar materials
to prevent dirt from entering system.
(3)
Ensure that new and used parts are clean before installing.
(4)
Wait to uncover, uncap, unplug, or remove tape from lines and ports until just before connecting lines.
4-26.
ANTISEIZING TAPE.
New antiseizing tape (Item 41, Appendix E) may be used to keep connections from leaking whenever you are
connecting fuel, oil, and hydraulic system lines and fittings without compression sleeves or packings. Perform the
following steps:
(1)
Ensure that threads are clean and dry.
(2)
Start tape one or two threads from small or leading edge of fitting, joining tape together with an
overlap of about 0.125 in. (3.175 mm) for fittings with fine threads. For fittings with coarse threads, tape should be
wrapped around threads two or three times.
(3)
Wrap tape tightly in opposite direction as you 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 antiselzing tape.
Overtightening could damage fitting threads and cause connection to leak.
(4)
Using hand tools, tighten fittings to specified torque.
4-21
