TM    10-4610-232-12 • When operating with Class I or II leaks, continue to check fluid levels as required in your PMCS. • Class Ill leaks should be reported immediately to your 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 Ill - Leakage of fluid great enough to form drops that fall from item being checked/in- spected. Table  4-1.  Unit  Preventive  Maintenance  Checks  and  Services Item No. 1. 2. 3. 4. 5. 6. 7. Interval Monthly Monthly Monthly Monthly Monthly Monthly Monthly Item To Be Checked  Or Serviced External  Electri- cal Panels for Distribution Pump, Raw Wa- ter Pump and Utility Box. Automatic Con- trol Valves High  Pressure Pump  Assembly Air  Compressor Assembly Carbon  Monoxide Monitor Generator Air  System Procedure NOTE Ensure crew has performed operator PMCS. Check desiccant (para. 4-33 to 4-35). If color has changed from pink to blue, change desiccant pack. Check all valves for signs of cor- rosion and water leakage by re- moving/replacing  orange  cap. Check  stable  levels  for  damage, and  observe  for  unusually  high noise level in ISO Container. Check  belt  adjustment  (para. 4-78). Check by performing test in para. 3–39, then 4-63, for proper ad- justment. Check that torque for generator to trailer mounting is 99 Ft Lbs. Check outlet air filter for white water or oil sludge buildup (para. 3-31). Not  Mission Capable  If: Any damage to stable level is observed or ex- cessive noise level in ISO container is present. Cannot be adjusted be- tween 3.7 and 5.4 pounds. Correct  readings  cannot be obtained. Any mounting bolt is mis- sing or unable to be torqued. Change   2   4-5