3905440
Oil Filler Tube
Cummins®

Introduction

The Cummins 3905440 Oil Filler Tube is a component designed for use in commercial trucks. It plays a role in the lubrication system, ensuring that the engine receives the proper amount of oil for optimal performance and longevity. This part is integral to maintaining the health and efficiency of the engine, making it a significant element in the operation of commercial trucks.

Basic Concepts of Oil Filler Tubes

An Oil Filler Tube is a component within the lubrication system of an engine. Its primary function is to provide a pathway for adding oil to the engine, ensuring that the lubrication system maintains the correct oil level. Proper lubrication reduces friction, wear, and heat, thereby enhancing engine efficiency and durability ¹.

Purpose of the 3905440 Oil Filler Tube

The Cummins 3905440 Oil Filler Tube facilitates the addition of oil to the engine. It ensures that the lubrication system maintains the appropriate oil levels, which is necessary for the engine’s moving parts to function smoothly. By providing a reliable means to add oil, this component helps in maintaining the engine’s performance and extending its operational life.

Key Features

The Cummins 3905440 Oil Filler Tube is characterized by its robust design and the materials used in its construction. It is engineered to withstand the demanding conditions of commercial truck operations. The tube is made from high-quality materials that offer resistance to wear and corrosion, ensuring durability and reliability. Additionally, its design may include features that enhance its performance, such as a secure fitting to prevent leaks and a straightforward design for ease of use.

Benefits

Utilizing the Cummins 3905440 Oil Filler Tube offers several advantages. It contributes to improved engine performance by ensuring that the lubrication system operates efficiently. The durable construction of the tube enhances the engine’s longevity, reducing the need for frequent replacements. Moreover, its design facilitates ease of maintenance, allowing for quick and straightforward oil changes or checks, which is beneficial for fleet operations.

Installation Process

Installing the Cummins 3905440 Oil Filler Tube involves several steps to ensure a proper fit and function. The process may require specific tools or equipment, depending on the truck model. Best practices for installation include ensuring a clean and dry installation area, following the manufacturer’s instructions for fitting the tube securely, and checking for any leaks after installation. Proper installation is key to the tube’s performance and the engine’s health.

Troubleshooting and Maintenance

Common issues with Oil Filler Tubes, such as leaks or blockages, can often be addressed through regular maintenance and inspections. Troubleshooting may involve checking the tube for signs of wear or damage, ensuring it is securely fitted, and cleaning any debris that may obstruct its function. Regular maintenance, including inspections during oil changes, can help identify potential issues early, ensuring the tube’s optimal performance and longevity.

Cummins Overview

Cummins Inc. is a well-established company in the automotive industry, known for its commitment to quality and innovation. With a rich history of providing reliable and high-performance engine components, Cummins has built a reputation for excellence. The company’s dedication to advancing technology and improving engine efficiency underscores its position as a leader in the industry.

Compatibility of Cummins Oil Filler Tube 3905440

The Cummins Oil Filler Tube part number 3905440 is designed to fit a variety of Cummins engines, ensuring a secure and efficient oil filling process. This part is integral to maintaining the proper oil levels in the engine, preventing oil starvation and ensuring optimal engine performance. Below is a detailed overview of the engines that this oil filler tube is compatible with:

4B3.9 Series

• 4B3.9: This engine model benefits from the 3905440 oil filler tube, which is engineered to fit seamlessly and provide a reliable oil filling mechanism.

6B5.9 Series

• 6B5.9: The 3905440 oil filler tube is compatible with the 6B5.9 engine, ensuring that the oil filling process is both efficient and secure.

B3.9 G Series

• B3.9 G: This engine model also utilizes the 3905440 oil filler tube, which is designed to integrate smoothly with the engine’s design.

B4.5 Series

• B4.5: The 3905440 oil filler tube is suitable for the B4.5 engine, providing a dependable solution for oil management.

G5.9 Series

• G5.9: The 3905440 oil filler tube fits the G5.9 engine, ensuring that the oil filling process is both accurate and reliable.
• G5.9 CM558: This variant of the G5.9 engine also benefits from the 3905440 oil filler tube, maintaining the integrity of the oil system.

ISB Series

• ISB CM550: The 3905440 oil filler tube is compatible with the ISB CM550 engine, providing a secure oil filling mechanism.

QSB3.9 Series

• QSB3.9 30 CM550: This engine model is designed to work with the 3905440 oil filler tube, ensuring efficient oil management.
• QSB3.9 CM2880 B138: The 3905440 oil filler tube is also suitable for the QSB3.9 CM2880 B138 engine, providing a reliable oil filling solution.

QSB4.5 Series

• QSB4.5 CM2250 EC: The 3905440 oil filler tube fits the QSB4.5 CM2250 EC engine, ensuring accurate oil levels.
• QSB4.5 CM850 (CM2850): This engine model is also compatible with the 3905440 oil filler tube, providing a dependable oil filling mechanism.

QSB5.9 Series

• QSB5.9 30 CM550: The 3905440 oil filler tube is suitable for the QSB5.9 30 CM550 engine, ensuring efficient oil management.
• QSB5.9 44 CM550: This variant of the QSB5.9 engine also benefits from the 3905440 oil filler tube, maintaining the integrity of the oil system.
• QSB5.9G: The 3905440 oil filler tube fits the QSB5.9G engine, providing a reliable oil filling mechanism.

QSB6.7 Series

• QSB6.7 CM2250: The 3905440 oil filler tube is compatible with the QSB6.7 CM2250 engine, ensuring efficient oil management.
• QSB6.7 CM2350 B105: This engine model also benefits from the 3905440 oil filler tube, providing a dependable oil filling solution.
• QSB6.7 CM850 (CM2850): The 3905440 oil filler tube is suitable for the QSB6.7 CM850 (CM2850) engine, ensuring accurate oil levels.

QSB7 Series

• QSB7 CM2880 B117: The 3905440 oil filler tube fits the QSB7 CM2880 B117 engine, providing a reliable oil filling mechanism.

By ensuring compatibility with these various engine models, the Cummins Oil Filler Tube 3905440 provides a versatile and reliable solution for maintaining optimal oil levels across a wide range of engines.

Role of Part 3905440 Oil Filler Tube in Engine Systems

The part 3905440 Oil Filler Tube is a component in the lubrication system of an engine. It facilitates the process of oil filling, ensuring that the engine’s moving parts are adequately lubricated for optimal performance and longevity.

Integration with Engine Components

1. Arrangement: The Oil Filler Tube is strategically positioned within the engine’s arrangement to provide a direct pathway for oil to enter the system. This placement ensures that oil can be efficiently distributed to all necessary components without leakage or spillage.

2. Oil Fill Process: During the oil fill process, the Oil Filler Tube serves as the primary inlet for fresh oil. It allows for the easy addition of oil to the engine, maintaining the correct oil level which is vital for the lubrication of internal components.

3. Cover Assembly: The Oil Filler Tube is often integrated into the engine cover assembly. This cover protects the internal components and houses the tube in a secure manner, preventing any external damage and ensuring a sealed environment for the oil.

4. Cylinder Block: Once the oil is introduced through the Oil Filler Tube, it flows into the cylinder block. The cylinder block houses the cylinders, pistons, and other critical components that require consistent lubrication to function smoothly and reduce wear.

In summary, the Part 3905440 Oil Filler Tube plays a role in the efficient operation of the engine’s lubrication system by ensuring that oil is properly introduced and distributed throughout the engine components.

Conclusion

The Cummins 3905440 Oil Filler Tube is a critical component in the lubrication system of commercial truck engines. Its robust design, compatibility with various Cummins engines, and role in maintaining optimal oil levels contribute to the engine’s performance, efficiency, and longevity. Proper installation, regular maintenance, and troubleshooting are essential to ensure the tube’s optimal performance and the engine’s health.