TM 5-4310-393-14Return the oil cap/dipstick to the filler neck completely, then remove and note the oil level on the dipstick. Add or drain asnecessary. The oil level must not exceed the maximum level mark on the dipstick.3-5.3. Compressor Oil Change Procedure.The compressor oil should be changed according to the PMCS schedule (Table 2-2). Refer to Figure 3-4 and proceed asfollows:a.Run the compressor unit until it is warm. Turn off the compressor.CAUTIONTHE FEDERAL WATER POLLUTIONCONTROL ACT PROHIBITS THEDISCHARGE OF OIL OR OILY WASTEINTO OR UPON THE NAVIGABLEWATERS OF THE UNITED STATESOR THE WATERS OF THECONTIGUOUS ZONE, IF THEDISCHARGE CAUSES A FILM ORDISCOLORATION OF THE SURFACEOF THE WATER OR CAUSES ASLUDGE OR EMULSION BENEATHTHE SURFACE OF THE WATER.ENSURE A CONTAINER OFSUFFICIENT SIZE IS USED WHENDRAINING THE OIL.Figure 3-4. Compressor Oil Levelb.Vent any residual pressure from the system by opening and then closing the manual drain valves on oil/waterseparators and purge valve of the purification system.1.Open the oil filter cap/dipstick slowly, allowing any residual pressure to vent from the crankcase.2.Remove the oil filter cap/dipstick from the oil filler neck.3.Place a suitable oil drain pan beneath the drain plug at the back of the unit.4.Remove the oil drain plug from the compressor, (Figure 3-5, item 3).5.Allow the warm oil to totally drain.6.Reinstall the oil drain plug.7.Remove the oil drain pan. Dispose of the used oil in accordance with current instructions for waste oildisposal.CAUTIONTO AVOID DAMAGE TO THE COMPRESSOR, DO NOT MIX TYPE OR VISCOSITYGRADES OF OIL. DO NOT OVERFILL.c.To fill with oil, pour 1.5 quarts of oil slowly into the oil filler neck. If necessary, add oil. Wait five (5) minutes afterfilling, check oil level per paragraph 3-5.2, reinstall the filler cap, then start the compressor unit.3-4
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