Lubrication and Maintenance Service Interval Chart

Item	Daily/Before Every Startup	250 Hours or 6 Months	500 Hours or 12 Months	1500 Hours	2000 Hours or 24 Months	3000 Hours	4500 Hours or 60 Months	6000 Hours or 72 Months	Service As Required
Operate Engine at Rated Speed and 50%—70% Load for a Minimum of 30 Minutes. Perform every 2 weeks. (Generator Sets Only)
Check Engine Oil Level and Coolant Level	•
Check Sea Water Pump and Strainer (If Equipped)	•
Check Accessory Drive Belts	•
Drain Water from Fuel Filters	•
Inspect Wiring Harness and Fuses	•
Check Aftercooler Condensate Drain (If Equipped)	•
Check Air Cleaner Dust Unloader Valve and Air Filter Restriction Indicator 1	•
Check Air Intake System	•
Visual Walkaround Inspection	•
Change Engine Oil And Replace Oil Filter 2		•
Servicing Air Cleaner Filter Element (4045SFM85)		•
Service Fire Extinguisher		•
Service Battery		•
Check Engine Mounts		•
Inspect and Replace Zinc Plugs (If Equipped)		•
Replace Crankcase Ventilation Filter			•
Check Air Intake System			•
Replace Fuel Filters and Clean Water Separator 3			•
Check Automatic Belt Tensioner and Belt Wear			•
Check Cooling System			•
Pressure Test Cooling System			•
Servicing Heat Exchanger Core (If Equipped)			•
Servicing Seawater Aftercooler Core (If Equipped)			•
Check and Adjust Engine Speeds			•
Check Engine Electrical Ground Connections			•
Replace Sea Water Pump Impeller (If Equipped)			•
Check and Adjust Engine Valve Clearance					•
Check Crankshaft Vibration Damper (If Equipped) 4				•		•
Overhaul Sea Water Pump					•
Replace Elastomeric Crankshaft Vibration Damper (If Equipped)							•
Flush And Refill Cooling System								•
Test Thermostats								•
Drain Water From Fuel Filters									•
Add Coolant									•
Servicing Air Cleaner Filter Element (4045TFM85)									•
Replacing Air Cleaner Filter Element (4045AFM85 and All 6068)									•
Replace Alternator Belt									•