TM 10-3930-65314&P a. Keep it clean.  Dirt, grease, oil and debris only get in the way and may cover up a serious problem.  Clean as you work and as needed.  Use dry cleaning solvent (P-D-680) to clean metal surfaces.  Use soap and water when you clean rubber or plastic material. b. Bolts, nuts and screws.  Check that they are not loose, missing, bent or broken.  You can’t try them all with a tool, but look for chipped paint, bare metal or rust around bolt heads.  Tighten any bolt, nut, or screw that you find loose. c. Welds.  Look for loose  or  chipped  paint,  rust  or  gaps  where  parts  are  welded  together.    If  you  find  a  bad  weld, report it to direct support. d. Electric wires and connectors.  Look for cracked or broken insulation, bare wires and loose or broken connectors. Tighten loose connections and make sure the wires are in good condition. e. Hoses  and  fluid  lines.    Look  for  wear,  damage  and  leaks.    Make  sure  clamps  and  fittings  are  tight.    Wet  spots show  leaks,  but  a  stain  around  a  fitting  or  connector  can  also  mean  a  leak.    If  leakage  comes  form  a  loose  fitting  or connector, tighten the fitting or connector.  If something is broken or worn out, either correct it or report it to direct support. 5. It is necessary for you to know how fluid leaks affect the status of your equipment.  The following are definitions of the types/classes of leakage you need to know in order to determine the status of your equipment.  Learn and be familiar with them and REMEMBER - when in doubt, notify your supervisor. LEAKAGE DEFINITIONS FOR ORGANIZATIONAL PMCS Class I Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops. Class II Leakage of fluid great enough to form drops, but not enough to cause drops to drip from the item being checked/inspected. Class III Leakage    of    fluid    great    enough    to    form    drops    that    fall    from    the    item    being checked/inspected. B-39