3930880
Oil Filler Tube
Cummins®

The Cummins 3930880 Oil Filler Tube is a component designed for use in heavy-duty truck engines. Its purpose is to facilitate the process of adding oil to the engine, ensuring that the lubrication system operates efficiently. This part is significant in maintaining the overall health and performance of the engine by allowing for easy and precise oil addition ¹.

Function and Operation

The Cummins 3930880 Oil Filler Tube plays a role in the engine’s lubrication system by providing a pathway for oil to be introduced into the engine. It is typically located on the engine block or the oil pan and is connected to the oil reservoir. The process of oil filling involves pouring oil through the tube into the engine, where it circulates to lubricate moving parts, reduce friction, and dissipate heat. Maintaining proper oil levels is important for ensuring optimal engine performance and longevity ².

Key Features

The Cummins 3930880 Oil Filler Tube is constructed from materials that offer durability and resistance to the high temperatures and pressures found within an engine environment. Its design includes features that enhance its longevity, such as a secure fitting mechanism to prevent leaks and a smooth interior to allow for easy oil flow. Additionally, the tube may have unique characteristics, such as an integrated dipstick or a design that simplifies the oil-filling process ³.

Benefits

The Cummins 3930880 Oil Filler Tube offers several advantages. It contributes to improved engine performance by ensuring that the lubrication system receives the correct amount of oil. Its durable construction enhances the longevity of the component, reducing the frequency of replacements. Moreover, the design of the tube can make the oil-filling process more straightforward for maintenance personnel, potentially saving time during routine maintenance checks ⁴.

Installation Process

Installing the Cummins 3930880 Oil Filler Tube requires following a series of steps to ensure it is securely and correctly fitted. The process may involve using specific tools to remove the old tube and install the new one. Safety precautions, such as allowing the engine to cool before beginning work and wearing appropriate personal protective equipment, should be observed throughout the installation process ⁵.

Maintenance and Care

Routine maintenance of the Cummins 3930880 Oil Filler Tube includes regular inspection for signs of wear or damage, cleaning to remove any debris that may obstruct oil flow, and ensuring that the fitting remains secure. Guidelines for when to consider replacement may include noticing oil leaks around the tube or if the fitting becomes loose, indicating potential degradation of the component ⁶.

Troubleshooting Common Issues

Common problems associated with Oil Filler Tubes can include leaks or blockages. Troubleshooting these issues may involve checking the fitting for tightness, inspecting the tube for cracks or damage, and ensuring that the oil being used is compatible with the engine’s requirements. Addressing these problems promptly can help maintain the efficiency of the lubrication system ⁷.

Compatibility and Applications

The Cummins 3930880 Oil Filler Tube is designed for use with specific types of engines and truck models. Understanding its compatibility ensures that it functions correctly within the intended application. Specific application notes may provide additional guidance on installation and use within different engine configurations ⁸.

Safety Considerations

When working with the Cummins 3930880 Oil Filler Tube, it is important to follow safety practices. This includes handling hot oil with care, using appropriate personal protective equipment to protect against burns and spills, and adhering to manufacturer guidelines for installation and maintenance. These practices help ensure a safe working environment and prevent accidents ⁹.

Cummins Overview

Cummins Inc. is a company with a history of providing a wide range of engine and power generation equipment. Known for its quality and reliability, Cummins offers a variety of components for the automotive industry, particularly in the segment of heavy-duty truck parts. The company’s reputation is built on a commitment to innovation, quality, and customer satisfaction, making its products a popular choice among professionals in the field ¹⁰.

Cummins Oil Filler Tube Part 3930880 Compatibility

The Cummins Oil Filler Tube part number 3930880 is designed to fit seamlessly with several engine models, ensuring proper oil management and maintenance. This part is engineered to meet the specific requirements of the following engine groups:

• 4B3.9 Engines: The 3930880 Oil Filler Tube is a critical component for the 4B3.9 engines, facilitating the oil filling process and preventing contamination. Its precise fit ensures that oil can be added without spillage, maintaining engine efficiency and longevity.

• 6B5.9 Engines: Similarly, for the 6B5.9 engines, the 3930880 Oil Filler Tube is engineered to integrate perfectly with the engine’s design. This part plays a vital role in the oil system by providing a clear and unobstructed path for oil replenishment, which is essential for the engine’s optimal performance.

Both engine groups benefit from the use of this part, as it is crafted to withstand the operational stresses and conditions these engines encounter. The compatibility of the 3930880 Oil Filler Tube with these engines underscores Cummins’ commitment to providing reliable and durable components for their engines ¹¹.

Role of Part 3930880 Oil Filler Tube in Engine Systems

The oil filler tube (part 3930880) is an essential component in the lubrication system of an engine, facilitating the addition of oil to the system. This component interfaces directly with the cylinder block and the engine cover, ensuring a seamless flow of oil into the engine’s crankcase.

Interaction with the Cylinder Block

The cylinder block houses the engine’s cylinders, pistons, and other critical components. The oil filler tube is strategically positioned to allow oil to be introduced directly into the crankcase, which is an integral part of the cylinder block. This ensures that the oil reaches the moving parts within the block, such as the crankshaft and connecting rods, providing necessary lubrication to reduce friction and wear.

Integration with the Engine Cover

The engine cover, often referred to as the valve cover, is another key component that the oil filler tube interacts with. The cover protects the upper portion of the engine, including the camshaft, valve train, and other components. The oil filler tube is typically mounted on the engine cover, allowing for easy access during oil changes or top-ups. This design ensures that the oil is distributed evenly throughout the engine, maintaining optimal lubrication for all moving parts.

Lubrication System Efficiency

By efficiently channeling oil into the crankcase, the oil filler tube plays a significant role in maintaining the overall health and performance of the engine. Proper lubrication is vital for the longevity of engine components, reducing the risk of overheating, metal-to-metal contact, and subsequent damage. The oil filler tube’s design and placement are engineered to ensure that oil is introduced into the system with minimal spillage and maximum effectiveness.

Conclusion

In summary, the oil filler tube (part 3930880) is a vital link in the engine’s lubrication chain, working in conjunction with the cylinder block and engine cover to ensure that all components receive the lubrication they need to operate smoothly and efficiently. Its design, compatibility, and role in the engine system highlight the importance of this Cummins part in maintaining engine health and performance ¹².