ARMY TM 10-4610-309-14
MARINE CORPS TM10802A-14/1
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TACTICAL WATER PURIFICATION SYSTEM (TWPS)
UNIT MAINTENANCE PROCEDURES
PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
INTRODUCTION
6. Hoses and Fluid Lines. Look for wear, damage, and leaks. Make sure clamps and fittings are
tight. Wet spots or stains around fittings and connectors indicate leaks. Correct or report to
supervisor.
7. Leakage definitions are as follows:
a. Class I: For oil and fuel: Seepage of fluid (as indicated by wetness) but not enough to
form drops. For water: Seepage of fluid (as indicated by wetness) or leakage great
enough to form drops, but not enough to cause drops to fall.
b. Class II: For oil and fuel: Leakage of fluid great enough to form drops, but not enough to
cause drops to fall. For water: Leakage great enough to result in more than a slow
dripping from the leaking item.
c. Class III: For oil and fuel: Leakage great enough to cause drops to fall from leaking item.
For water: Rapid dripping or spray deemed to be a safety hazard or has the potential to
damage other equipment.
CAUTION
Operation is allowable with Class I and II leakage. Class II leaks should be
corrected when operational demands allow. Check regularly for any increase in
leakage.
Do not continue operation with Class III leakage.
END OF WORK PACKAGE
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