Maintenance Interval Schedule CAT C18 Marine Engine

Operation and Maintenance Manual
C18 Marine Engine

Maintenance Interval Schedule

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 maintenance, including all adjustments, the use of proper lubricants, fluids, and filters. The user is also responsible for the replacement of components due to normal wear and aging. Failure to adhere to proper maintenance intervals and procedures may result in diminished performance of the product and/or accelerated wear of components. Use fuel consumption, service hours, or calendar time, WHICH EVER OCCURS FIRST, to determine the maintenance intervals. Products that operate in severe operating conditions may require more frequent maintenance. Before each consecutive interval is performed, all maintenance from the previous interval must be performed.

When Required

Battery - Replace
Battery or Battery Cable - Disconnect
Coolant - Change
Coolant Extender (ELC) - Add
Engine Oil Level Gauge - Calibrate
Engine Storage Procedure - Check
Fuel System - Prime
Heat Exchanger - Inspect
Maintenance Recommendations
Sea Water Strainer - Clean/Inspect 

Daily

Coolant Level - Check
Engine Air Cleaner Service Indicator - Inspect
Engine Oil Level - Check
Fuel System Primary Filter/Water Separator - Drain
Fumes Disposal Filter Service Indicator - Check
Walk-Around Inspection 

Initial 20 to 40 Service Hours

Belts - Inspect/Adjust/Replace 

Every 50 Service Hours or Weekly

Aftercooler Condensate Drain Valve - Inspect/Clean
Sea Water Strainer - Clean/Inspect
Zinc Rods - Inspect/Replace 

First 14 400 L (3750 US gal) of Fuel or 250 Service Hours

Engine Valve Lash - Check
Engine Valve Rotators - Inspect
Fuel Injector - Check 

Every 14 400 L (3750 US gal) of Fuel or 250 Service Hours or 1 Year

Auxiliary Water Pump (Rubber Impeller) - Inspect/Replace
Battery Electrolyte Level - Check
Belts - Inspect/Adjust/Replace
Cooling System Supplemental Coolant Additive (SCA) - Test/Add
Engine - Clean
Engine Air Cleaner Element (Single Element) - Inspect/Clean/Replace
Engine Crankcase Breather - Clean
Engine Oil Sample - Obtain
Engine Oil and Filter - Change
Fuel System Primary Filter (Water Separator) Element - Replace
Fuel System Secondary Filter - Replace
Fuel Tank Water and Sediment - Drain
Hoses and Clamps - Inspect/Replace 

Initial 500 Hours (for New Systems, Refilled Systems, and Converted Systems)

Coolant Sample (Level 2) - Obtain 

Every 500 Service Hours

Coolant Sample (Level 1) - Obtain 

Every 1000 Service Hours

Fumes Disposal Filter Element - Replace 

Every 57 000 L (15 000 US gal) of Fuel or 1000 Service Hours

Turbocharger - Inspect 

Every 57 000 L (15 000 US gal) of Fuel or 1000 Service Hours or 2 Years

Aftercooler Core - Clean/Test 

Every Year

Coolant Sample (Level 2) - Obtain 

Every 3000 Service Hours

Heat Exchanger - Inspect 

Every 170 400 L (45 000 US gal) of Fuel or 3000 Service Hours

Auxiliary Water Pump (Bronze Impeller) - Inspect/Replace
Coolant Temperature Regulator - Replace
Crankshaft Vibration Damper - Inspect
Engine Mounts - Inspect
Engine Speed/Timing Sensor - Clean/Inspect
Engine Valve Lash - Check
Engine Valve Rotators - Inspect
Fuel Injector - Check
Starting Motor - Inspect 

Every 284 000 L (75 000 US gal) of Fuel or 5000 Service Hours

Oil Cooler Core - Check/Clean/Test
Water Pump - Inspect 

Every 6 Years

Aftercooler Core - Replace 

Overhaul

Maintenance Recommendations
Overhaul (Major)