4349740
Lubricating Oil Pump Shaft
Cummins®

The Lubricating Oil Pump Shaft, identified by Part #4349740, is a component manufactured by Cummins, a renowned leader in the automotive industry. This shaft is integral to the lubrication system of heavy-duty truck engines, facilitating the circulation of oil to vital engine components. Cummins is recognized for its commitment to quality, innovation, and customer satisfaction, ensuring that each part, including the Lubricating Oil Pump Shaft, meets rigorous standards for performance and durability ¹.

Function and Operation

The Lubricating Oil Pump Shaft operates within the engine’s lubrication system, playing a role in circulating oil to critical engine components. It is driven by the engine’s rotation, which in turn drives the oil pump. The shaft’s rotation enables the pump to draw oil from the sump and distribute it throughout the engine, ensuring that moving parts are adequately lubricated. This process is vital for reducing friction and wear between components, maintaining engine efficiency, and protecting against overheating ².

Key Features

The Lubricating Oil Pump Shaft is designed with precision machining and constructed from high-quality materials to ensure durability and performance. Its material composition typically includes hardened steel or similar alloys, which provide resistance to wear and corrosion. The shaft is engineered to exact specifications to ensure smooth operation and compatibility with the oil pump and engine components. Unique design elements may include specific geometries or surface treatments that enhance its performance and longevity ³.

Benefits

The Lubricating Oil Pump Shaft offers several advantages that contribute to engine health and performance. By ensuring consistent oil circulation, it helps reduce friction and wear on engine components, leading to improved efficiency and longevity. Enhanced lubrication also contributes to reduced operating temperatures, further protecting engine components from damage. The reliability of the Lubricating Oil Pump Shaft is a key factor in the overall reliability and longevity of the engine.

Installation and Maintenance

Proper installation of the Lubricating Oil Pump Shaft is critical for ensuring optimal performance. This includes adhering to torque specifications for any fasteners and ensuring correct alignment with the oil pump and drive mechanism. Regular maintenance is also important for the longevity of the shaft. This involves periodic inspection for signs of wear or damage, ensuring that all connections are secure, and following manufacturer recommendations for lubrication and operational checks.

Troubleshooting Common Issues

Common issues associated with the Lubricating Oil Pump Shaft may include oil leaks, unusual noise, or a decrease in lubrication efficiency. Diagnostic procedures for addressing these issues may involve inspecting the shaft and its connections for wear or damage, checking for proper alignment, and ensuring that the oil pump is functioning correctly. Solutions may range from simple adjustments or lubrication to more complex repairs or replacements, depending on the severity of the issue.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality, innovation, and customer satisfaction in the automotive industry. The company’s product offerings extend beyond engines to include a wide range of components and systems that contribute to the efficiency, reliability, and performance of vehicles and equipment. Cummins’ commitment to excellence is evident in every part it manufactures, including the Lubricating Oil Pump Shaft.

Lubricating Oil Pump Shaft (Part 4349740) Compatibility with Cummins Engines

The Cummins part 4349740, which is a Lubricating Oil Pump Shaft, is designed to fit seamlessly into the engine systems of the following Cummins engines:

• QSK95 CM2350 K111
• QSK95 CM2350 K113

This part is engineered to ensure optimal performance and reliability within these engine configurations. The design and specifications of the lubricating oil pump shaft are tailored to meet the specific needs of these engines, ensuring efficient oil distribution and maintaining engine health.

Role of Part 4349740 Lubricating Oil Pump Shaft in Engine Systems

The part 4349740 Lubricating Oil Pump Shaft is an integral component within the lubricating oil pump system, ensuring the efficient circulation of lubricating oil throughout the engine. This shaft is designed to work in harmony with various components to maintain optimal engine performance and longevity.

When integrated into the lubricating oil pump, the shaft facilitates the rotation of the pump’s internal gears or rotors. This motion creates a vacuum that draws lubricating oil from the sump and propels it through the engine’s passages. The consistent rotation of the shaft is essential for maintaining a steady oil flow, which is vital for reducing friction between moving parts.

In a lubricating oil pump kit, the shaft is often accompanied by other necessary components such as seals, gaskets, and bearings. These elements work together to ensure the pump operates smoothly and efficiently. The shaft’s precise engineering allows it to fit securely within the pump housing, minimizing the risk of leaks and ensuring reliable performance.

For those undertaking an oil pump repair kit installation, the Lubricating Oil Pump Shaft (part 4349740) plays a significant role. It must be correctly aligned and installed to prevent any misalignment issues that could lead to increased wear or failure of the pump. Proper installation of the shaft ensures that the pump can handle the required oil pressure and flow rates.

The shaft’s interaction with the pump itself is straightforward yet vital. As the engine runs, the shaft’s rotation is driven by a gear connected to the engine’s crankshaft. This direct link means that the shaft’s performance directly impacts the pump’s ability to deliver lubricating oil to critical engine components such as the crankshaft, camshaft, and valve train.

In the context of a lubricating oil service kit, the shaft is often replaced to ensure the pump’s longevity and efficiency. Regular maintenance and replacement of the shaft can prevent issues such as oil starvation, which can lead to severe engine damage. The shaft’s durability and precision manufacturing are key factors in the overall reliability of the lubricating oil system.

Overall, the part 4349740 Lubricating Oil Pump Shaft is a fundamental element in the lubricating oil pump system, ensuring that engine components receive the necessary lubrication to operate smoothly and efficiently. Its proper function and maintenance are essential for the sustained performance and durability of the engine.

Conclusion

The Lubricating Oil Pump Shaft (Part 4349740) is a critical component in the lubrication system of Cummins engines, ensuring efficient oil circulation and engine health. Its precise engineering, compatibility with specific engine models, and role in maintaining engine performance underscore its importance. Proper installation, regular maintenance, and timely replacement are essential for the longevity and reliability of the engine.