ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 CHAPTER 3 MAINTENANCE Section I.  PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) 3-1.  PMCS PROCEDURES. 3-1.1.  General. To ensure that engine is ready for operation at all times, it must be inspected so defects can be discovered and corrected before they result in serious damage or failure.  Perform operator's PMCS prior to or in conjunction with performance of engine PMCS.  For engine PMCS, refer to TABLE 3-1. TABLE 3-1.  Preventive Maintenance Checks and Services (PMCS) Interval Procedures Check Equipment is Item Item for and have Not/Ready No. to be repaired or adjusted Available M Q S A B H Inspected as necessary If: 1 300 Oil Filter Refer to paragraph 3-16.1. NOTE Oil filter change interval is a hard time replacement to be used when AOAP lab is not available. 2 3000 Engine Valve Adjust engine valve Tappets tappets.  Refer to paragraph 3-32.1. 3 3000 Engine Fuel Remove, clean, and Injectors test injectors.  Refer to paragraph 3-5. 4 1500 Engine Check engine Engine compression Compression compression.  Refer to is low. paragraph 3-5. 5 1500 Engine Oil Check engine oil Engine oil pressure Pressure pressure.  Refer to not as specified. paragraph 3-21.4. Change 3  3-1