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 mileage, 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.

Note: The engine oil and filter change interval depend on several factors including oil sump capacity. Refer to the engine oil and filter change section for specific interval information.

Contact Phu Thai Cat at Hotline 1800 599 990 for 24/7 product support services!

When Required

Battery - Replace
Battery or Battery Cable - Disconnect
Centrifugal Oil Filter - Inspect
Coolant - Change
Engine Air Cleaner Element (Dual Element) - Inspect/Clean/Replace
Engine Air Cleaner Element (Single Element) - Inspect/Clean/Replace
Fuel System - Prime
Fuel System Primary Filter/Water Separator - Clean/Replace
Fuel System Primary Filter/Water Separator - Drain
Heat Exchanger - Inspect
Maintenance Recommendations
Sea Water Strainer - Clean/Inspect
Zinc Rods - Inspect/Replace

Daily

Air Starting Motor Lubricator Oil Level - Check
Air Tank Moisture and Sediment - Drain
Control Panel - Inspect/Test
Coolant Level - Check
Engine Air Cleaner Service Indicator - Inspect
Engine Oil Filter Differential Pressure - Check
Engine Oil Level - Check
Fuel Filter Differential Pressure - Check
Fuel System Primary Filter/Water Separator - Drain
Fuel Tank Water and Sediment - Drain
Transmission Oil Level - Check
Walk-Around Inspection

Initial 250 Service Hours

Engine Speed/Timing Sensor - Clean/Inspect
Engine Valve Lash - Check
Fuel Injector - Inspect/Adjust

Every 250 Service Hours

Battery Electrolyte Level - Check
Belts - Inspect/Adjust/Replace
Coolant Sample (Level 1) - Obtain
Cooling System Supplemental Coolant Additive (SCA) - Test/Add
Engine Oil Sample - Obtain
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

Air Shutoff - Test
Engine Oil and Filter - Change

Every 6 Months

Oil Mist Detector - Clean

Every Year

Coolant Sample (Level 2) - Obtain

Every 1000 Service Hours

Engine - Clean
Engine Crankcase Breather - Clean
Engine Protective Devices - Check
Fuel System Primary Filter/Water Separator - Clean/Replace
Fuel System Secondary Filter - Replace

PM Kit	Part Number	Description	Q.ty
Every 1000 Service Hours	1R-0726	Oil Filter	4	Order Now
	3E-9848	CAT DEO15W40-20L	33
	1R-0756	Fuel Filter	7

Every 2000 Service Hours

Air Starting Motor Lubricator Bowl - Clean
Crankshaft Vibration Damper - Inspect
Driven Equipment - Check
Engine Mounts - Inspect
Turbocharger - Inspect

Every 3000 Service Hours

Air Starting Motor - Inspect

Every 3000 Service Hours or 3 Years

Coolant Extender (ELC) - Add

PM Kit	Part Number	Description	Q.ty
Every 3000 Service Hours	119-5152	ELC Extender	7	Order Now
Every 3000 Service Hours	226-2779	Air Filter Element	2	Order Now

Every 4000 Service Hours

Auxiliary Water Pump - Inspect
Engine Valve Lash - Check
Fuel Injector - Inspect/Adjust

Every 6000 Service Hours

Air Shutoff Damper - Remove/Check

Every 6000 Service Hours or 6 Years

Air Shutoff Damper - Remove/Check
Coolant Temperature Regulator - Replace
Engine Speed/Timing Sensor - Clean/Inspect
Prelube Pump - Inspect
Starting Motor - Inspect
Water Pump - Inspect

PM Kit	Part Number	Description	Q.ty
Every 6000 Service Hours	524-8612	Regulator engine coolant temp	4	Order Now
	219-3240	Regulator aftercooler coolant temp	2
	7N-4927	Gasket Regulator Housing	1
	3S-9643	Seal Regulator	6
	365-8396	CAT ELC - Extended Life Coolant	18

Every 8000 Service Hours or 3 Years

Camshaft Roller Followers - Inspect

Overhaul

Aftercooler Core - Inspect/Clean/Test
Overhaul (Major)
Overhaul (Top End)
Overhaul Considerations

Contact Phu Thai Cat at Hotline 1800 599 990 for 24/7 product support services!

Cat 3512C Marine Engine (RL2) - Maintenance Interval Schedule

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Cat 3512C Marine Engine (RL2) - Maintenance Interval Schedule

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