TM 10-4320-346-12&P CAUTION • Equipment operation is allowable with minor leakages (Class I or II).  Of course, consideration must be given to fluid capacity in the item/system being checked/inspected.  When in doubt, notify your supervisor. • When operating with Class I or II leaks, continue to check fluid levels as required by your PMCS. • Class III leaks should be reported immediately to you supervisor. 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 item being checked/inspected. Table 2-1.  Operator Preventive Maintenance Checks and Services For Forward Area Water Point Supply System. Item Interval Location No. Item To Check/Service Procedure Not Fully Mission Capable If: 1 Before HOSE ASSEMBLIES Check all hose coupling halves  for missing gaskets. Coupling   half   gasket is missing. Before Check hoses for cuts, cracks, and deterioration. Hoses are cut, cracked, or deteriorated. Before Check   for   damaged   or   missing coupling halves. Coupling    halves    are damaged or missing. 2 Before BALL VALVE ASSEMBLIES Inspect valve handles for damage. Valve handles are damaged. Before Check all valves for proper operation. Valves do not operate properly. Before Inspect  valve  coupling  halves  for damage and for missing gaskets. Valve coupling halves are damaged or gasket is missing. 2-5