Lubrication and Maintenance Service Interval Chart—Jet Fuel Capable Engines

	Lubrication and Maintenance Service Intervals
Item	Daily	250 Hours of Operation/or Every 12 Months	500 Hours of Operation/or Every 12 Months	2000 Hours of Operation/or Every 24 Months	As Required
Check Engine Oil and Coolant Level	•
Check Fuel Filter/Water Bowl	•
Check Air Cleaner Dust Unloader Valve & Restriction Indicator Gauge 1	•
Visual Walk Around Inspection	•
Replace Fuel Filter Elements		•
Replace Dosing Element		•
Change Engine Oil And Replace Oil Filter 23		•
Service Fire Extinguisher			•
Check Engine Mounts			•
Service Battery			•
Check Crankcase Vent System			•
Check Air Intake Hoses, Connections, & System			•
Check Automatic Belt Tensioner and Belt Wear			•
Check Engine Electrical Ground Connection			•
Coolant Solution Analysis-Add SCAs as required			•
Pressure Test Cooling System			•
Check Engine Speeds			•
Check Cooling System			•
Test Thermostats				•
Check Crankshaft Vibration Damper (6.8 L Engines) 4				•
Flush and Refill Cooling System 5				•
Check and Adjust Engine Valve Clearance				•
Test Glow Plugs (If Equipped)				•
Add Coolant					•
Replace Air Cleaner Elements					•
Replace Fan and Alternator Belts					•
Check Fuses					•
Check Air Compressor (If Equipped)					•
Bleed Fuel System					•