C7 Engines for Combat and Tactical Vehicles Caterpillar

Ensure that all safety information, warnings, and instructions are read and understood before any operation or any maintenance procedures are performed. The user is responsible for the performance of all maintenance including the following procedures: all adjustments , the use of proper lubricants, fluids, filters and the installation of new components due to normal wear and aging . The performance of this product may be diminished if proper maintenance intervals and procedures are not followed. Components may experience accelerated wear if proper maintenance intervals and procedures are not followed.

Note: Use whichever of the following that occurs first in order to determine the maintenance intervals: fuel consumption , service hours and calendar time . Before each consecutive interval is performed, all maintenance from the previous intervals must be performed.

When Required

Air Dryer - Check
Battery - Replace
Battery or Battery Cable - Disconnect
Cooling System Coolant Sample (Level 1) - Obtain
Engine - Clean
Engine Oil Level Gauge - Calibrate
Engine Storage Procedure - Check
Fuel System - Prime
Severe Service Application - Check

Daily

Cooling System Coolant Level - Check
Engine Air Cleaner Service Indicator - Inspect
Engine Oil Level - Check
Fuel System Water Separator - Drain
Walk-Around Inspection

Initial 17 700 km (11 000 miles) or 4150 L (1100 US gal) of Fuel or 250 Service Hours or 6 Months

Engine Valve Lash - Inspect/Adjust

PM Level 1 - Every 17 700 km (11 000 miles) or 4150 L (1100 US gal) of Fuel or 250 Service Hours or 6 Months

Aftercooler Core - Clean/Test
Air Compressor Filter - Clean/Replace
Battery Electrolyte Level - Check
Belt - Inspect
Cooling System Supplemental Coolant Additive (SCA) - Test/Add
Cylinder Head Grounding Stud - Inspect/Clean/Tighten
Engine Crankcase Breather - Clean
Engine Oil Sample - Obtain
Fan Drive Bearing - Lubricate
Fuel System Primary Filter - Clean/Replace
Fuel System Secondary Filter - Replace
Fuel Tank Water and Sediment - Drain
Hoses and Clamps - Inspect/Replace
Radiator - Clean

Every 500 Service Hours or 6 Months

Engine Oil and Filter - Change

PM Level 2 - Every 161 000 km (100 000 miles) or 56 850 L (15 000 US gal) of Fuel or 2000 Service Hours or 2 Years

Air Compressor - Inspect
Alternator - Inspect
Belt Tensioner - Inspect
Cooling System Water Temperature Regulator - Replace
Crankshaft Vibration Damper - Inspect
Engine Air Cleaner Element - Clean/Replace
Engine Mounts - Inspect
Engine Valve Lash - Inspect/Adjust
Starting Motor - Inspect
Turbocharger - Inspect
Water Pump - Inspect

Every Year

Cooling System Coolant Sample (Level 2) - Obtain

Every 3 Years or 322 000 km (200 000 miles)

Cooling System Coolant (DEAC) - Change

Every 483 000 km (300 000 miles)

Cooling System Coolant Extender (ELC) - Add

Every 6 Years or 966 000 km (600 000 miles)

Cooling System Coolant (ELC) - Change

Every 114 000 L (30 000 US gal) of Fuel

Overhaul Considerations