3964393
Oil Drain Connection
Cummins®

The Cummins 3964393 Oil Drain Connection is a component designed for use in heavy-duty trucks. It serves a specific function within the engine’s oil system, contributing to the overall maintenance and efficiency of the vehicle. Understanding its purpose and operation is key to ensuring the longevity and performance of heavy-duty trucks.

Basic Concepts of Oil Drain Connections

An oil drain connection is a part of the engine system that allows for the removal of used oil from the engine. This process is fundamental to regular vehicle maintenance, as it ensures that the engine operates with clean oil, which is vital for lubrication, cooling, and the reduction of wear on engine components. The efficiency of this process can significantly impact the engine’s performance and lifespan ¹.

Purpose of the Cummins 3964393 Oil Drain Connection

The Cummins 3964393 Oil Drain Connection plays a role in the operation and maintenance of heavy-duty trucks by facilitating the efficient draining of oil from the engine. This component is integral to the oil change process, ensuring that old oil is effectively removed, which is crucial for maintaining engine health and performance. By allowing for a quick and clean oil change, it helps in preserving the engine’s efficiency and reliability over time ².

Key Features

The Cummins 3964393 Oil Drain Connection is characterized by its design and material composition, which are tailored to enhance its performance and durability. Its construction is aimed at withstanding the demanding conditions of heavy-duty truck engines, ensuring a secure and leak-free connection during oil changes.

Benefits

The advantages of using the Cummins 3964393 Oil Drain Connection include improved efficiency in performing oil changes, which can lead to reduced downtime for maintenance. Additionally, by ensuring a clean and complete oil change, it contributes to enhanced engine protection, potentially leading to cost savings over time through extended engine life and improved performance ³.

Installation Process

Installing the Cummins 3964393 Oil Drain Connection involves several steps to ensure it is properly secured and functions as intended. Best practices include verifying the compatibility of the connection with the engine, ensuring a clean and dry installation site, and following the manufacturer’s guidelines for torque specifications to avoid over-tightening, which could damage the connection or the engine block.

Troubleshooting and Maintenance

Common issues with oil drain connections can include leaks or difficulties in removing the connection during oil changes. Regular inspection and maintenance, such as checking for signs of wear or corrosion, can help identify potential problems early. Ensuring the connection is properly tightened and using the correct gaskets or seals during reinstallation can prevent many issues.

Cummins Overview

Cummins Inc. is a well-established manufacturer in the automotive industry, particularly known for its heavy-duty truck components. With a history of innovation and quality, Cummins offers a wide range of products designed to meet the demanding requirements of commercial and industrial applications. The company’s reputation for reliability and performance is built on a foundation of expertise in engine technology and a commitment to customer satisfaction.

Cummins Engine Part 3964393: Oil Drain Connection

The Cummins Oil Drain Connection part number 3964393 is a critical component in the maintenance and operation of various Cummins engines. This part is designed to facilitate the removal of used oil from the engine’s oil pan, ensuring that the engine remains clean and operates efficiently. Below is a detailed description of how this part fits with the listed Cummins engines.

ISC Series Engines

• ISC CM2150
• ISC CM850
• ISC8.3 CM2250
• ISL CM2150
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250
• ISL9.5 CM2880 L138

The Oil Drain Connection part 3964393 is compatible with the ISC and ISL series engines. These engines are known for their robust design and high performance, often used in heavy-duty applications such as construction equipment and trucks. The part ensures that the oil drain process is smooth and efficient, preventing oil leaks and maintaining engine health.

QSC and QSL Series Engines

• QSC8.3 CM2880 C102
• QSC8.3 CM850(CM2850)
• QSC9 CM2250/QSL9 CM2250
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102
• QSL9 CM850(CM2850)
• QSL9 G CM558
• QSL9.3 CM2880 L113

The QSC and QSL series engines also utilize the Oil Drain Connection part 3964393. These engines are designed for applications requiring high power and reliability, such as agricultural machinery and industrial equipment. The part’s design ensures that the oil drain process is seamless, contributing to the longevity and efficiency of these engines.

L Series Engines

• L8.9
• L8.9 CM2670 L134C
• L8.9 L121
• L8.9G CMOH2.0 L125B
• L9 CM2670 L128B
• L9.3 L105
• L9.5 L117

The L series engines, which include the L8.9, L9, and L9.5 models, also benefit from the Oil Drain Connection part 3964393. These engines are typically used in a variety of applications, from construction to transportation. The part’s compatibility with these engines ensures that the oil drain process is efficient, helping to maintain optimal engine performance.

Role of Part 3964393 Oil Drain Connection in Engine Systems

The Part 3964393 Oil Drain Connection is an essential component in the maintenance and operation of various engine systems. Its primary function is to facilitate the efficient draining of oil from the crankcase, ensuring that the engine operates within optimal lubrication parameters.

Integration with Key Engine Components

1. Crankcase: The Oil Drain Connection is directly attached to the crankcase, allowing for the straightforward removal of used oil. This process is vital for maintaining the crankcase’s integrity and ensuring that it remains free from contaminants that can accumulate over time.

2. Cylinder Block: Positioned adjacent to the cylinder block, the Oil Drain Connection aids in keeping the block clean by ensuring that old oil, which may contain debris and metal particles, is regularly removed. This helps in prolonging the lifespan of the cylinder block and maintaining its performance.

3. Cover: The connection is often installed beneath a cover, which protects it from external elements and contaminants. This cover must be removed during oil change procedures to access the Oil Drain Connection, highlighting the importance of a secure yet accessible design.

4. Breather: While the breather system manages crankcase ventilation, the Oil Drain Connection ensures that the crankcase does not become overfilled with oil. This balance is essential for the breather to function correctly, as excessive oil can impede its ability to release pressure and contaminants.

5. Oil Fill: The efficiency of the Oil Drain Connection indirectly affects the oil fill process. By ensuring that old oil is completely drained, the connection helps maintain the correct oil level when new oil is added, which is critical for the engine’s lubrication system.

6. Hand Hole: In some engine designs, the Oil Drain Connection is accessible through a hand hole, which provides convenient access for maintenance tasks. This design consideration enhances the ease of performing regular oil changes and inspections.

7. Arrangement: The overall arrangement of these components, including the Oil Drain Connection, is meticulously planned to ensure that maintenance tasks are straightforward and that the engine operates efficiently. The connection’s placement is strategic, allowing for quick and clean oil drainage without interfering with other critical engine functions.

Conclusion

In summary, the Part 3964393 Oil Drain Connection plays a significant role in the maintenance and operational efficiency of engine systems by ensuring that oil is regularly and effectively drained from the crankcase, thereby supporting the functionality of other interconnected components.