TM 5-6115-365-15 (8) If anything looks wrong and you can't fix it, write  it  on  your  DA  Form  2404.    If  you  find  something seriously  wrong,  report  it  to  Organizational  Maintenance RIGHT NOW. (9) When you do your PREVENTIVE MAINTENANCE, take along the tools you need to make all the checks.  You always need a rag or two, also. 17-2.2.  General Maintenance Procedures a. Cleanliness.    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   Type   II,   Fed.      Spec   PD-680,   on   all   metal surfaces. WARNING Dry   cleaning   solvent,   Type   II,   Fed. Spec PD-680, is potentially dangerous to personnel and property.      Do   not   use   near   open flame  or  excessive  heat.    Flash  point of solvent is 139° F (59.4° C). b. Bolts,  Nuts,  and  Screws.      Check   them   all   for obvious  looseness,  missing,  bent,  or  broken  condition. You can't try them all with a tool, of course, but look for chipped  paint,  bare  metal,  or  rust  around  bolt  heads.    If you  find  one  you  think  is  loose,  tighten  it,  or  report  it  to Organizational Maintenance. 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 Organizational Maintenance. d. Electric    Wires    and    Connectors.        Look    for cracked  or  broken  insulation,  bare  wires,  and  loose  or broken   connectors.      Check   for   loose   connectors   and make  sure  the  wires  are  in  good  shape.    Report  loose connectors and bad wires to organizational maintenance. e. Hydraulic   Lines   and   Fittings.      Look   for   wear, damage,  leaks,  and  make  sure  clamps  and  fittings  are tight.      Wet   spots   show   leaks,   of   course,   but   a   stain around a fitting or connector can mean a leak.  If a leak comes   from   a   loose   fitting   or   connector,   report   it   to Organizational  Maintenance.    If  something  is  broken  or worn out, report it to Organizational Maintenance. 17-2.3.  Fluid Leakage. It is necessary for you to know how fluid leakage affects the  status  of  the  fuel,  lubricating,  coolant  and  hydraulic systems. The following are definitions of the types/classes of leakage you need to know to be able to determine the status of your equipment.  Learn, then be familiar  with  them  and  REMEMBER-WHEN  in  DOUBT, NOTIFY YOUR SUPERVISOR. CAUTION Equipment    operation    is    allowable with   minor   leakages   (Class   I   or   II) except fuel.  Of course, consideration must be given to the fluid capacity in the item/system being checked/inspected.    When  in  doubt, notify your supervisor. When   operating   with   Class   I   or   II leaks,  check  fluid  levels  more  often than required in your PMCS. Class  III  leaks  should  be  reported  to your  supervisor  or  to  Organizational Maintenance. a. Class   I.      Seepage   of   fluid   (as   indicated   by wetness   or   discoloration)   not   great   enough   to   form drops. b. Class II.    Leakage  of  fluid  great  enough  to  form drops  but  not  enough  to  cause  drops  to  drip  from  item being checked/inspected. c. Class III.    Leakage  of  fluid  great  enough  to  form drops that fall from the item being checked/inspected. 17-2  Change 10