Interval M-Monthly B-BIANNUALLY A-Annually Item ITEM TO BE INSPECTED PROCEDURES No. M B A TM 5-4310-393-14 Table 4-1.  Unit Preventive Maintenance Check and Services (PMCS) 1 Diesel Engine Remove the diesel engine if It needs to be removed for repairs or if it is non-repairable (paragraph 4-13.1). 2 Engine Cylinder Head Check tappet clearance, check decompression Valves mechanism paragraph 4-13.2). 3 Engine Fuel Injector Remove, Test, Install (paragraph 4-13.3). 4 Compressor Cooling Inspect, Replace if damaged (paragraph 4-14.1). System 5 Compressor Lubrication Inspect, Repair, Replace (paragraph 4-14.2). System 6 Compressor Inspect, Remove, Repair, Replace (paragraph 4-14.3). Impeller/Groove Pulley 7 Compressor Valve Head Inspect, Replace (paragraph 4-14.4, 4-14.5, & 4-14.6). and Valves 8 Fuel Filter Replace the fuel filter annually or after every 480 hours of operation which ever comes first (paragraph 4-15) 9 Purifier Cylinder Inspect, Replace if corrosion is excessive or if otherwise defective (paragraph 4-16). 10 Oil/Water Separators Inspect, Replace as necessary (paragraph 4-17). 11 Pressure Maintaining Adjust, Replace (paragraph 4-18). Valve 12 Interstage Pressures Check (paragraph 4-19). 13 Tubing and Fittings Replace if damaged (paragraph 4-20) 14 Safety Relief Valves Remove and bench test all safety valves every 6 months to ensure proper setting and function.  Replace defective valves.  Leak test after installation. 15 Reciprocating Compressor Remove the compressor as required for repair or if It needs to be replaced (paragraph 4-14.7). 16 V-Belt Remove belt guard and visually inspect the drive V-belt for wear, fraying, and peeling.  Check belt tension. Replace V-belt if damaged or worn.  (paragraph 3-14.2) 4-4