5588790
Lubricating Oil Pump
Cummins®

The Cummins 5588790 Lubricating Oil Pump is a critical component in the operation of commercial trucks. Its role is to ensure the efficient circulation of lubricating oil throughout the engine, which is essential for maintaining engine performance and longevity. This part is designed to meet the demanding requirements of heavy-duty applications, providing reliable lubrication to critical engine components.

Basic Concepts of Lubricating Oil Pumps

Lubricating oil pumps are fundamental to the lubrication system of an engine. They operate by drawing oil from the sump and delivering it under pressure to various engine parts. Proper lubrication reduces friction between moving parts, minimizes wear and tear, and helps dissipate heat. Effective lubrication is vital for engine performance, efficiency, and durability ¹.

Purpose and Function of the 5588790 Lubricating Oil Pump

The Cummins 5588790 Lubricating Oil Pump plays a specific role in the operation of a truck engine by circulating oil to critical components such as the crankshaft, camshaft, bearings, and pistons. This circulation ensures that these parts receive the necessary lubrication for smooth operation and cooling, which helps maintain engine efficiency and prolongs the lifespan of the engine.

Key Features

The Cummins 5588790 Lubricating Oil Pump is characterized by its robust design and the use of high-quality materials. These features enhance its performance and reliability. The pump is engineered to withstand the high pressures and temperatures typical of heavy-duty truck engines, ensuring consistent oil flow and pressure.

Benefits of Using the 5588790 Lubricating Oil Pump

Using the Cummins 5588790 Lubricating Oil Pump offers several advantages. It contributes to improved engine efficiency by ensuring that all moving parts are properly lubricated. This reduces friction and wear, leading to enhanced overall performance and reliability of the engine. Additionally, consistent lubrication helps in maintaining optimal engine temperature, which is crucial for engine longevity ².

Troubleshooting and Maintenance

Common issues with the Cummins 5588790 Lubricating Oil Pump may include oil leaks, insufficient oil pressure, or pump failure. Troubleshooting steps involve checking for leaks, ensuring proper oil levels, and inspecting the pump for any signs of wear or damage. Regular maintenance practices, such as replacing oil filters and using the recommended grade of lubricating oil, are essential for ensuring optimal performance and longevity of the pump.

Installation and Compatibility

Proper installation of the Cummins 5588790 Lubricating Oil Pump is crucial for its effective operation. It is important to follow the manufacturer’s guidelines for installation, which may include specific torque settings and alignment procedures. The pump is designed to be compatible with a range of truck models and engine types, ensuring versatility in its application.

Performance Enhancements

Potential performance enhancements for the Cummins 5588790 Lubricating Oil Pump may include upgrades to the pump’s design or the use of higher-quality materials. These modifications can further optimize engine performance and efficiency by ensuring more consistent oil flow and pressure, even under extreme operating conditions.

Cummins Overview

Cummins Inc. is a renowned manufacturer with a long-standing reputation in the industry for producing high-quality automotive components. The company’s commitment to innovation and quality is evident in its wide range of products, including the Cummins 5588790 Lubricating Oil Pump. Cummins continues to lead the way in developing reliable and efficient solutions for the automotive and heavy-duty truck sectors.

Cummins Lubricating Oil Pump Part 5588790 Compatibility

The Cummins lubricating oil pump part number 5588790 is designed to fit a variety of engine models, ensuring efficient oil circulation and engine protection. Here are the specific engines that this part is compatible with:

B4.5 Series

• B4.5 CM2350 B129B
• ISB4.5 CM2350 B104

D4.0 Series

• D4.0 CM2620 D103B

F3.8 Series

• F3.8 CM2350 F120B
• F3.8 CM2620 F137B
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109

F4.5 Series

• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• ISF4.5 CM2220 F123

F3.8 Series (Additional)

• F3.8 F102

This part is engineered to meet the specific requirements of these engines, providing reliable performance and longevity. It is essential to verify the compatibility of this oil pump with the engine model in use to ensure proper fitment and functionality.

Role of Part 5588790 Lubricating Oil Pump in Engine Systems

The lubricating oil pump, identified by part number 5588790, is a critical component in the engine system, responsible for circulating oil to various moving parts to ensure smooth operation and longevity of the engine.

Integration with Engine Components

1. Crankshaft and Connecting Rods: The oil pump delivers pressurized oil to the crankshaft and connecting rods, reducing friction and wear between these high-stress components. This lubrication is vital for maintaining the integrity and performance of the engine’s primary moving parts.

2. Camshaft and Valve Train: Adequate lubrication is provided to the camshaft and valve train, ensuring that the valve mechanisms operate without excessive friction. This helps in maintaining precise valve timing and reduces the risk of valvetrain wear.

3. Pistons and Cylinder Walls: The oil pump ensures that oil reaches the pistons and cylinder walls, forming a thin film that minimizes friction and heat generation. This lubrication is key to preventing piston seizure and cylinder wall scoring.

4. Main and Rod Bearings: Consistent oil flow to the main and rod bearings is essential for their proper function. The oil pump ensures these bearings receive a steady supply of lubricant, which is necessary for reducing wear and maintaining bearing clearances.

5. Timing Chain or Belt: For engines equipped with timing chains or belts, the oil pump provides necessary lubrication to these components, ensuring they operate smoothly and quietly, thereby prolonging their service life.

6. Oil Filter: The oil pump works in conjunction with the oil filter to circulate clean oil throughout the engine. This partnership is essential for removing contaminants and maintaining oil quality, which is critical for the engine’s overall health.

7. Oil Cooler: In systems with an oil cooler, the pump ensures that oil is circulated through the cooler, helping to maintain optimal oil temperature. This is particularly important in high-performance or high-stress applications where oil temperatures can rise significantly.

8. Turbocharger (if equipped): For turbocharged engines, the oil pump supplies lubrication to the turbocharger bearings and other moving parts, ensuring efficient and reliable operation of the turbo system.

By effectively circulating oil to these components, part 5588790 Lubricating Oil Pump plays a significant role in maintaining the engine’s efficiency, reliability, and durability.

Conclusion

The Cummins 5588790 Lubricating Oil Pump is an essential component for the efficient operation of commercial truck engines. Its robust design, high-quality materials, and compatibility with various engine models make it a reliable choice for ensuring proper lubrication and engine longevity. Regular maintenance and proper installation are crucial for maximizing the performance and lifespan of this part.