TM 9-2320-365-102-13. GENERAL MAINTENANCE INSTRUCTIONS (CONT)e. Hydraulic Lines and Fittings. Look for wear, damage, and leaks; make sure clampsand fittings are tight. Wet spots show leaks. A stain around a fitting or connector canmean a leak. If a leak comes from a loose fitting or connector, tighten it. If something isbroken or worn out, notify Unit Maintenance.f. Damage. Damage is defined as any condition that affects safety or would make thevehicle unserviceable for mission requirements.2-14. FLUID LEAKAGEIt is necessary to know how fluid leakage affects the status of fuel, oil, coolant, andhydraulic systems. The following are definitions of the different types of leakage that candetermine the status of the vehicle. Learn, then be familiar with them, and REMEMBER-WHEN IN DOUBT, NOTIFY UNIT MAINTENANCE!CAUTION• Equipment operation is allowable with minor leakage (Class I or Class II).Fluid levels of items with Class I and Class II leaks must be checked oftenso proper levels can be kept. Consideration must be given to the fluidcapacity in the item/system being checked/ inspected. Failure to comply mayresult in damage to equipment.• Class III leaks must be reported to Unit Maintenance. Failure to comply mayresult in damage to equipment.Fluid leakage is classified and defined as follows:CLASSIFICATIONIDENTIFICATIONClass I Seepage of fluid (indicated by wetness or discoloration)not great enough to form drops.Class II Leakage of fluid great enough to form drops but notenough to cause drops to drip from item beinginspected.Class III Leakage of fluid great enough to cause drops to dripfrom item being checked.2-32
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