Cummins 4 390 Engine Specs
The Cummins 4 390 engine is a popular choice for various applications, known for its reliability and performance. Let’s take a closer look at the engine specifications of this powerful machine.
Engine Configuration
The Cummins 4 390 engine is a 3.9-liter, four-cylinder diesel engine. It features a cast iron block and cylinder head, providing durability and strength. The engine is designed with overhead valves and a direct injection fuel system, ensuring efficient combustion and power delivery.
Engine Oil Specs
Proper engine oil is crucial for maintaining the performance and longevity of the Cummins 4 390 engine. Here are the recommended engine oil specifications:
- Oil Type: Cummins recommends using high-quality diesel engine oil meeting the CES 20076 or CES 20077 specifications.
- Viscosity Grade: The engine oil should have a viscosity grade of SAE 15W-40, providing optimal lubrication in various operating conditions.
- Oil Capacity: The Cummins 4 390 engine has an oil capacity of approximately 11.1 liters (2.9 gallons).
Service Intervals
Regular maintenance is essential to keep the Cummins 4 390 engine running smoothly. Here are the recommended service intervals for this engine:
- Oil Change: It is recommended to change the engine oil and oil filter every 12 months or 15,000 miles, whichever comes first.
- Air Filter: The air filter should be inspected every 6 months or 7,500 miles, and replaced if necessary.
- Fuel Filter: The fuel filter should be inspected every 6 months or 7,500 miles, and replaced if necessary.
- Coolant: The coolant should be tested and replaced as per the manufacturer’s recommendations.
- Belts and Hoses: Regularly inspect the belts and hoses for any signs of wear or damage, and replace them if needed.
Detailed Engine Specifications
To provide a comprehensive overview of the Cummins 4 390 engine, here are the detailed specifications:
| Engine Type | Four-cylinder diesel |
|---|---|
| Displacement | 3.9 liters |
| Block Material | Cast iron |
| Cylinder Head Material | Cast iron |
| Valvetrain | Overhead valves |
| Fuel System | Direct injection |
| Oil Capacity | Approximately 11.1 liters (2.9 gallons) |
| Recommended Oil Type | CES 20076 or CES 20077 |
| Recommended Oil Viscosity Grade | SAE 15W-40 |
In conclusion, the Cummins 4 390 engine offers impressive specifications and performance. By following the recommended engine oil specifications and service intervals, you can ensure the longevity and reliability of this powerful machine. Regular maintenance and proper care will keep your Cummins 4 390 engine running smoothly for years to come.
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