TM  10-4320-226-14 2.2.5  Leakage  Classification  and  Definitions. indicated  below. Leakage Fluid  leakage Definitions. is classified and defined as Class Class I Class  II Class  III Fluid Definition Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops. Leakage of fluid great enough to form drops, but not enough to cause drops to drip from the item being checked/inspected. Leakage of fluid great enough to form drops that fall from the item being  checked/inspected. levels of items with Class I and II leaks must be checked often so proper levels can be kept. Class III leaks must be reported to supervisors or to Unit Level Maintenance  for  corrective  action. Table  2-2  Operator  Preventive  Maintenance  Checks  and  Services for the 350 GPM pumping Assembly. Item No. 1 2 3 4 5 6 Interval Before Before Before Before Before Before Location Item to Check/Service AIR CLEANER ASSEMBLY AIR CLEANER ASSEMBLY ELECTRICAL SYSTEM BATTERIES V-BELTS ALTERNATOR STARTER FUEL FILTER/ SEPARATOR Procedure Check service indicator for red signal indicating that air cleaner requires servicing. Check that electrolyte is to the bottom edge of fill hole (paragraph 3.4). Check for corrosion buildup at post and loose clamps and cables. Check for loose V-belt. Check for cracks or otherwise damaged V-belt. Check  all  electrical  connections are secure and no broken wires are  present. Inspect for frayed or worn spots in wires. Check  all  electrical  connections are secure and no broken wires are  present. Inspect for frayed or worn spots in wires. Drain water into suitable container (paragraph 3.5) . Not Fully Mission Capable if: Service indicator cannot  be reset . Terminal connection loose. Excessive corrosion buildup. V-belt loose, damaged  or missing. Wires  are loose  or broken. Wires  are loose  or broken. 2-8