TM-5-4310-389-14 Table 2-1.  Operator Preventive Maintenance Checks and Services (PMCS) Note: B - Before Operation D - During Operation A - After Operation Intervals Item Item to be Inspected Equipment is not No. B D A (Procedure) Ready/Available if: 1 Compressor Unit.  Check entire Deficiencies are unit for cleanliness, loose bolts, noted. nuts, and mounting hardware. Check tube and tube fittings for vibrating or rubbing high pressure lines. Check for oil and fuel leakage. 2 Meters and Gauges.  Check Faces, pointers and service line pressure, final lenses are damaged. pressure, and compressor oil pressure gauges for current comparison/calibration label. Check all gauge/meter faces, loose gauge mounting hardware. During operation, refer to paragraph 2-2 for operating parameters. 3 Engine Fuel Tank.  Check the fuel No fuel is available. supply.  Ensure that tank is full. 4 V-belts (Alternator).  Visually Belt depression is inspect belt set for wear, fraying, more than 1/2-inch and peeling through guard screen. or belts are frayed, Check belt tension through hand peeled or cracked. crank opening. See paragraph 3-21. 5 Engine Oil Level.  Check engine oil. Oil level is at or Fill to proper level, as required. below the add line. 6 Oil Bath Air Cleaner.  Ensure that Oil level is below air cleaner bowl is filled to oil level oil level mark. mark before starting the engine. Use same grade oil as is used in engine. 7 Battery.  Check battery electrolyte Loose terminals or level.  Fill as needed with distilled corrosion exists. water.  Check terminal condition for tightness and corrosion. 2-6