4939588
Lubricating Oil Pump
Cummins®

Introduction

The Cummins 4939588 Lubricating Oil Pump is a critical component designed to facilitate the circulation of lubricating oil within the engine of heavy-duty trucks. This part ensures that engine components receive the necessary lubrication to operate efficiently and maintain longevity.

Basic Concepts of Lubricating Oil Pumps

A lubricating oil pump is a device that circulates oil throughout an engine to reduce friction between moving parts, remove heat, and carry away contaminants ¹. The pump operates on the principle of positive displacement, where a fixed amount of oil is moved with each cycle of the pump. Proper lubrication is vital for the health of engine components, as it minimizes wear and tear, reduces heat generation, and helps in the removal of debris.

Purpose of the Cummins 4939588 Lubricating Oil Pump

The Cummins 4939588 Lubricating Oil Pump is integral to the operation of a truck’s engine. It plays a role in maintaining consistent oil pressure and flow, which is necessary for the lubrication of critical engine components such as bearings, pistons, and the crankshaft. By ensuring these parts are well-lubricated, the pump contributes to the overall performance and durability of the engine.

Key Features

The Cummins 4939588 Lubricating Oil Pump is characterized by its robust design and the use of high-quality materials that enhance its durability and efficiency. It features precision-engineered components that ensure a consistent oil flow and pressure. The pump’s design also incorporates elements that reduce noise and vibration, contributing to a smoother engine operation.

Benefits of Using the Cummins 4939588 Lubricating Oil Pump

Utilizing the Cummins 4939588 Lubricating Oil Pump offers several advantages. It contributes to improved engine efficiency by ensuring optimal lubrication, which can lead to reduced fuel consumption. The pump’s durable construction and reliable performance also mean lower maintenance requirements and increased engine longevity.

Installation and Integration

When installing the Cummins 4939588 Lubricating Oil Pump, it is important to follow manufacturer guidelines to ensure proper integration into the engine system. This may involve specific prerequisites or considerations depending on the truck model. Careful attention to the installation process helps to avoid potential issues and ensures the pump operates effectively within the engine.

Maintenance and Troubleshooting

To maintain the Cummins 4939588 Lubricating Oil Pump and ensure optimal performance, regular checks and servicing are recommended. This includes monitoring oil pressure and flow, inspecting for leaks, and replacing worn components as necessary. Common issues may include inconsistent oil pressure or flow, which can often be traced back to pump wear or blockages in the oil passages.

Performance and Efficiency

The Cummins 4939588 Lubricating Oil Pump contributes to the overall performance and fuel efficiency of the truck by providing reliable lubrication to engine components. This can result in smoother operation, reduced wear, and potentially lower fuel consumption. Real-world applications have shown that proper lubrication can lead to extended engine life and improved truck performance.

Cummins: A Brief Overview

Cummins Inc. is a well-established company in the automotive industry, known for its production of diesel engines and components. With a history of innovation and quality, Cummins has built a reputation for manufacturing reliable and high-performance parts that are trusted by professionals in the heavy-duty truck sector.

Cummins Lubricating Oil Pump Part 4939588 Compatibility

The Cummins lubricating oil pump part number 4939588 is designed to fit a variety of Cummins engines, ensuring efficient oil circulation and engine performance. This part is compatible with the following engines:

ISB Series

• ISB CM2150
• ISB CM850
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISBE CM2150
• ISBE CM800

QSB Series

• QSB4.5 CM850 (CM2850)
• QSB6.7 CM2250
• QSB6.7 CM850 (CM2850)
• QSB6.7 M CM2250

This compatibility ensures that the lubricating oil pump part 4939588 can be used across multiple engine models, providing a reliable solution for maintaining optimal engine operation.

Role of Part 4939588 Lubricating Oil Pump in Engine Systems

The part 4939588 lubricating oil pump is an essential component in the engine lubrication system, ensuring that all moving parts receive adequate lubrication for smooth operation and longevity.

Integration with Engine Components

1. Crankshaft and Connecting Rods: The lubricating oil pump delivers oil to the crankshaft and connecting rods, reducing friction and wear. This is particularly important at the main and rod bearings, where high loads and speeds are encountered.

2. Camshaft and Valve Train: In overhead camshaft (OHC) and overhead valve (OHV) engine configurations, the pump ensures that the camshaft, lifters, and rocker arms are properly lubricated. This is vital for maintaining the precision of valve operation and preventing metal-to-metal contact.

3. Pistons and Cylinder Walls: The pump supplies oil to the piston skirts and cylinder walls, forming a thin film that minimizes friction and heat generation. This lubrication is essential for the durability of the piston rings and the cylinder bores.

4. Timing Chain or Belt: In engines utilizing a timing chain, the pump provides lubrication to the chain and its associated sprockets and guides. This reduces wear and ensures consistent timing, which is crucial for engine performance and reliability.

5. Oil Filter: The pump pushes oil through the oil filter, where contaminants are removed before the oil is circulated back into the engine. This step is important for maintaining oil cleanliness and effectiveness.

6. Oil Cooler: In engines equipped with an oil cooler, the pump sends oil through the cooler to regulate its temperature. This is particularly beneficial in high-performance or high-stress applications where oil temperatures can rise significantly.

7. Turbocharger (if applicable): In turbocharged engines, the pump ensures that the turbocharger bearings receive adequate lubrication. This is important for the turbocharger’s efficiency and durability under high-speed and high-load conditions.

8. Hydraulic Lifters: For engines with hydraulic lifters, the pump supplies oil to maintain the proper valve clearance, ensuring consistent valve operation and engine performance.

By effectively circulating lubricating oil throughout these components, the part 4939588 lubricating oil pump plays a significant role in maintaining engine health, efficiency, and longevity.

Conclusion

The Cummins 4939588 Lubricating Oil Pump is a vital component in the engine lubrication system of heavy-duty trucks. Its robust design, precision-engineered components, and compatibility with various Cummins engines make it an essential part for maintaining engine performance and longevity. Regular maintenance and proper installation are key to ensuring the optimal operation of this Cummins part.