3977669
Lubricating Oil Suction Tube
Cummins®

The Lubricating Oil Suction Tube, identified by Part #3977669, is a component manufactured by Cummins, a well-established name in the automotive industry. This tube is integral to the lubrication system of heavy-duty trucks, facilitating the efficient operation of the engine by ensuring a steady supply of oil to vital components.

Function and Operation

The Lubricating Oil Suction Tube operates within the engine’s lubrication system by drawing oil from the sump and delivering it to the oil pump. This process is fundamental to maintaining the lubrication needs of the engine, as it ensures that oil is continuously circulated to reduce friction between moving parts ¹.

Purpose of the Lubricating Oil Suction Tube

The specific role of the Lubricating Oil Suction Tube is to ensure a consistent flow of oil to critical engine components. By maintaining proper lubrication, it contributes to the engine’s efficiency and longevity, reducing wear on moving parts and supporting optimal engine performance ².

Key Features

The Lubricating Oil Suction Tube is designed with a focus on durability and performance. Its material composition and build quality are tailored to withstand the demanding conditions within an engine. Unique attributes such as its precise engineering and robust construction enhance its performance and longevity, ensuring reliable operation in various operating environments.

Benefits

The advantages provided by the Lubricating Oil Suction Tube include improved engine performance through consistent oil delivery, reduced wear on engine components due to effective lubrication, and enhanced reliability under demanding conditions. These benefits contribute to the overall efficiency and durability of the engine.

Installation and Compatibility

For the proper installation of the Lubricating Oil Suction Tube, it is important to follow specific guidelines to ensure a secure and effective fit within the engine’s lubrication system. Attention to detail during installation helps maintain the integrity of the lubrication system and ensures the tube functions as intended.

Maintenance and Troubleshooting

Routine maintenance practices are recommended to keep the Lubricating Oil Suction Tube in optimal condition. This includes regular inspections for signs of wear or damage and addressing any issues such as leaks or blockages promptly. Proper maintenance contributes to the longevity and reliability of the lubrication system.

Cummins Overview

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its high-quality components for heavy-duty trucks. With a rich history and a strong reputation, Cummins is committed to producing reliable and durable parts that meet the demanding requirements of heavy-duty applications. The company’s dedication to quality and innovation is reflected in its wide range of products, including the Lubricating Oil Suction Tube.

Compatibility of Lubricating Oil Suction Tube Part 3977669 with Cummins Engines

The Cummins part number 3977669, which is a Lubricating Oil Suction Tube, is designed to fit a variety of Cummins engines. This part is integral in ensuring the proper flow of lubricating oil within the engine, maintaining optimal engine performance and longevity.

ISB Series Engines

The ISB series engines include:

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

The lubricating oil suction tube part 3977669 is compatible with these engines, ensuring that the oil is effectively drawn from the sump and circulated throughout the engine.

QSB Series Engines

The QSB series engines that are compatible with the part 3977669 include:

• QSB5.9 CM850
• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 CM850(CM2850)
• QSB6.7 M CM2250

This part ensures that the oil is adequately suctioned and circulated in these engines, maintaining their operational efficiency and reliability.

Grouping by Engine Series

The compatibility of the lubricating oil suction tube part 3977669 can be grouped by engine series for clarity:

• ISB Series: ISB CM2150, ISB CM850, ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, ISB6.7 CM2350 B101, ISBE CM2150
• QSB Series: QSB5.9 CM850, QSB6.7 CM2250, QSB6.7 CM2350 B105, QSB6.7 CM850(CM2850), QSB6.7 M CM2250

This grouping helps in understanding the broad compatibility of the part across different engine models within the ISB and QSB series.

Role of Part 3977669 Lubricating Oil Suction Tube in Engine Systems

The lubricating oil suction tube, part 3977669, is integral to the efficient operation of engine systems by facilitating the smooth transfer of oil from the oil pan to the engine’s lubrication system. This component ensures that the oil pump receives a consistent flow of lubricant, which is essential for maintaining optimal engine performance and longevity.

Interaction with the Oil Pan

The oil pan serves as the reservoir for the engine’s lubricating oil. Positioned at the bottom of the engine, it collects used oil that drips from various engine components during operation. The lubricating oil suction tube is designed to extend into the oil pan, reaching the oil surface to draw it up effectively. This setup ensures that the oil pump can continuously access fresh lubricant, even as the oil level in the pan fluctuates.

Ensuring Consistent Oil Flow

As the engine operates, the oil pump relies on a steady supply of oil to maintain pressure within the lubrication system. The lubricating oil suction tube plays a key role in this process by providing a direct pathway for oil to travel from the pan to the pump. This consistent flow is vital for the pump’s ability to circulate oil through the engine, lubricating moving parts, reducing friction, and dissipating heat.

Supporting Engine Health

By ensuring a reliable oil supply, the lubricating oil suction tube contributes to the overall health of the engine. Proper lubrication is necessary to prevent wear and tear on critical components such as bearings, pistons, and camshafts. The efficient operation of the suction tube helps maintain the integrity of these parts, promoting smoother engine function and extending the engine’s operational life.

Conclusion

In summary, the 3977669 Lubricating Oil Suction Tube is a fundamental component in the engine’s lubrication system, working in concert with the oil pan and oil pump to ensure that the engine receives the lubrication it needs to operate efficiently and reliably. Its role in maintaining a consistent oil flow is crucial for the engine’s performance, longevity, and overall health.