3408C Engines

Note: For all generator maintenance activities, refer to SEBU6918, SR4B Generators and Control Panels.

Use fuel consumption, service hours, or calendar time, whichever occurs first, to determine maintenance intervals. Experience has shown that maintenance intervals are most accurately scheduled on the basis of fuel consumed rather than service hours.

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

Daily

Walk-Around Inspection -Inspect engine for leaks and loose connections
Engine Crankcase -Check oil level
Cooling System -Check coolant level
Air Cleaner -Check service indicator/Service air cleaner when needed
Air Starter (if equipped) -Check lubricator oil level
Air Tank (if equipped) -Drain water/Check pressure

Every 3250 L (850 gal) of Fuel or 50 Hours

Air Cleaner -Clean Precleaner (If Equipped)

First 13,000 L (3400 gal) Of Fuel Or 250 Hours (At First Oil Change)

Valve Lash -Check/Adjust
Magnetic Pickup -Inspect/Adjust

Every 13,000 L (3,400 gal) Of Fuel Or 250 Hours

Scheduled Oil Sampling (S·O·S) -Obtain Sample and analysis
Engine Crankcase -Replace oil and filter(s)
Crankcase Breather -Clean
Cooling System (Conventional Coolant/Antifreeze Only)-Test for SCA concentration OR obtain Level I coolant analysis/Add SCA if necessary
Fuel System -Clean primary fuel filter (if equipped)/Replace final fuel filter
Radiator -Clean/Inspect
Belts -Check/Adjust/Replace
Hoses -Inspect/Replace
Fan Drive Bearing -Lubricate
Batteries -Clean/Check (if required)

Every 51,000 L (13,500 gal) Of Fuel Or 1000 Hours

Engine Protection Devices -Inspect/Check
Fuel Control Linkage -Check/Lubricate

Every 153,500 L (40,500 gal) Of Fuel Or 3000 Hours

Water Temperature Regulators (Thermostats) -Replace
Cooling System (Long Life Coolant/Antifreeze Only) -Add Extender
Cooling System (Conventional Coolant/Antifreeze Only) -Drain/Clean/Replace coolant
Turbocharger -Clean/Inspect/Check
Engine Mounts -Inspect
Crankshaft Vibration Damper -Inspect
Valve Lash, Valve Rotators -Check/Adjust

Every 256,000 L (67,500 gal) Of Fuel Or 5000 Hours

Fuel Injection Nozzles -Test/Exchange
Jacket Water Pump -Inspect/Rebuild or Exchange
Turbocharger -Inspect/Rebuild or Exchange
Alternator -Inspect/Rebuild or Exchange
Starting Motor -Inspect/Rebuild or Exchange
Magnetic Pickup -Inspect/Adjust

Every 6000 Hours Or Four Years

Cooling System (Long Life Coolant/Antifreeze Only) -Drain/Flush/Replace Coolant

Every 500,000 L (135,000 gal) Of Fuel Or 10000 Hours

Overhaul Considerations

3412C Engines

Note: For all generator maintenance activities, refer to SEBU6918, SR4B Generators and Control Panels.

Use fuel consumption, service hours, or calendar time, whichever occurs first, to determine maintenance intervals. Experience has shown that maintenance intervals are most accurately scheduled on the basis of fuel consumed rather than service hours.

Daily

Walk-Around Inspection -Inspect engine for leaks and loose connections
Engine Crankcase -Check oil level
Cooling System -Check coolant level
Air Cleaner -Check service indicator/Service air cleaner when needed
Air Starter (if equipped) -Check lubricator oil level
Air Tank (if equipped) -Drain water/Check pressure

Every 3800 L (1000 gal) of Fuel or 50 Hours

Air Cleaner -Clean Precleaner (If Equipped)

First 19,000 L (5,000 gal) Of Fuel Or 250 Hours (At First Oil Change)

Valve Lash -Check/Adjust
Magnetic Pickup -Inspect/Adjust

Every 19,000 L (5,000 gal) Of Fuel Or 250 Hours

Scheduled Oil Sampling (S·O·S) -Obtain Sample and analysis
Engine Crankcase -Replace oil and filter(s)
Crankcase Breather -Clean
Cooling System (Conventional Coolant/Antifreeze Only)-Test for SCA concentration OR obtain Level I coolant analysis/Add SCA if necessary
Fuel System -Clean primary fuel filter (if equipped)/Replace final fuel filter
Radiator -Clean/Inspect
Belts -Check/Adjust/Replace
Hoses -Inspect/Replace
Fan Drive Bearing -Lubricate
Batteries -Clean/Check (if required)

Every 76,000 L (20,000 gal) Of Fuel Or 1000 Hours

Engine Protection Devices -Inspect/Check
Fuel Control Linkage -Check/Lubricate

Every 227,500 L (60,000 gal) Of Fuel Or 3000 Hours

Water Temperature Regulators (Thermostats) -Replace
Cooling System (Long Life Coolant/Antifreeze Only) -Add Extender
Cooling System (Conventional Coolant/Antifreeze Only) -Drain/Clean/Replace coolant
Turbocharger -Clean/Inspect/Check
Engine Mounts -Inspect
Crankshaft Vibration Damper -Inspect
Valve Lash, Valve Rotators -Check/Adjust

Every 379,000 L (100,000 gal) Of Fuel Or 5000 Hours

Fuel Injection Nozzles -Test/Exchange
Jacket Water Pump -Inspect/Rebuild or Exchange
Turbocharger -Inspect/Rebuild or Exchange
Alternator -Inspect/Rebuild or Exchange
Starting Motor -Inspect/Rebuild or Exchange
Magnetic Pickup -Inspect/Adjust

Every 6000 Hours Or Four Years

Cooling System (Long Life Coolant/Antifreeze Only) -Drain/Flush/Replace Coolant

Every 500,000 L (135,000 gal) Of Fuel Or 10000 Hours

Overhaul Considerations

PM KIT 3408 (78Z) & 3412 (81Z)

PM Kit	Parts Number	Description	Q.ty
Every 250 Service Hours	1R-0749	Fuel filter	2	Order Now
Every 250 Service Hours	217-0616	SCA coolant	2	Order Now
Every 500 Service Hours	1R-1808	Oil filter	2	Order Now
Every 500 Service Hours	3E-9848	CAT DEO15W40-20L	8	Order Now
Every 1000 Service Hours	6L-2280	Rod- Zins	2	Order Now
Every 3000 Service Hours	4N-0015	Air filter element	2	Order Now
	593-7750	Regulator water	2
	3S-9643	Seal regulator	2
	217-0616	SCA coolant	12

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

Marine Engine Cat 3408 78Z 3412 81Z - Maintenance Interval Schedule

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Marine Engine Cat 3408 78Z 3412 81Z - Maintenance Interval Schedule

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