4946365
Lubricating Oil Suction Tube
Cummins®

The Lubricating Oil Suction Tube, identified by Part #4946365, is a component manufactured by Cummins, a well-established name in the commercial truck industry. This tube is integral to the engine lubrication system, facilitating the efficient transfer of oil from the sump to the oil pump. Its role ensures that the engine receives a consistent supply of lubricant, which is vital for maintaining engine performance and longevity ¹.

Function and Operation

The Lubricating Oil Suction Tube operates by drawing oil from the sump, the lowest part of the engine where oil collects, and delivering it to the oil pump. This process is fundamental to the lubrication system, as it ensures that the oil pump has a steady supply of oil to circulate throughout the engine. The tube’s design allows for efficient oil flow, minimizing the risk of air ingestion, which can lead to cavitation and reduced lubrication efficiency ².

Key Features

The Lubricating Oil Suction Tube is constructed from high-quality materials, ensuring durability and resistance to the harsh conditions within the engine compartment. Its design includes a specific tube diameter that optimizes oil flow while preventing blockages. Additionally, the tube may feature unique design elements such as reinforced sections or specialized coatings to enhance performance and longevity ³.

Benefits

The advantages of the Lubricating Oil Suction Tube include improved oil flow, which ensures that the engine receives a consistent supply of lubricant. This consistent flow helps in reducing the risk of air ingestion, which can cause cavitation and decrease lubrication efficiency. Furthermore, the tube’s design contributes to enhanced engine lubrication efficiency, supporting overall engine health and performance ¹.

Installation and Compatibility

Proper installation of the Lubricating Oil Suction Tube is crucial for its effective operation within the engine lubrication system. Installation guidelines should be followed to ensure a secure and effective fit. Specific requirements or considerations may include ensuring the tube is correctly aligned with the sump and oil pump, and that all connections are tight and secure to prevent leaks or disruptions in oil flow ⁴.

Maintenance and Troubleshooting

Routine maintenance practices are recommended to ensure the optimal performance of the Lubricating Oil Suction Tube. These may include regular inspections for signs of wear or damage, ensuring connections remain tight, and cleaning the tube as necessary to prevent blockages. Troubleshooting common issues, such as reduced oil flow or leaks, may involve checking for obstructions, ensuring proper alignment, and verifying the integrity of all connections ¹.

Cummins Overview

Cummins is a renowned manufacturer within the commercial truck industry, known for its wide range of products including engines, filtration systems, and aftermarket parts. With a history of innovation and quality, Cummins has established a strong reputation for producing reliable and high-performance components. The company’s commitment to excellence is reflected in its product offerings, which are designed to meet the demanding requirements of commercial applications ⁴.

Lubricating Oil Suction Tube (Part 4946365) Compatibility with Cummins Engines

The Cummins part number 4946365, which is a Lubricating Oil Suction Tube, is designed to fit into several models of Cummins engines. This part is crucial for the proper functioning of the engine’s lubrication system, ensuring that oil is efficiently drawn from the oil pan to the oil pump.

QSB6.7 Series

• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 CM850 (CM2850)

The QSB6.7 series engines, including the CM2250, CM2350 B105, and CM850 (CM2850), all utilize the 4946365 oil suction tube. These engines are known for their robust design and are commonly used in various applications, from agricultural machinery to industrial equipment.

QSB7 Series

• QSB7 CM2880 B117

The QSB7 CM2880 B117 engine also requires the 4946365 oil suction tube. This engine is part of the QSB7 series, which is designed for high-performance applications, often found in heavy-duty machinery and vehicles.

Each of these engines relies on the 4946365 oil suction tube to maintain optimal lubrication, ensuring longevity and reliability under demanding conditions ⁴.

Role of Part 4946365 Lubricating Oil Suction Tube in Engine Systems

The lubricating oil suction tube, identified as part 4946365, is an integral component in the lubrication system of an engine. Its primary function is to draw oil from the oil pan and deliver it to the oil pump. This process ensures a continuous supply of lubricant to the moving parts within the engine, significantly contributing to the engine’s efficiency and longevity ¹.

Interaction with the Oil Pan

The oil pan serves as the reservoir for the engine’s lubricant. Positioned at the bottom of the engine, it collects oil that has circulated through the engine and provides a stable base for the suction tube to draw from. The lubricating oil suction tube is strategically positioned to maximize the efficiency of oil intake, ensuring that the oil pump receives a consistent flow of lubricant under all operating conditions ².

Ensuring Efficient Lubrication

By maintaining a reliable connection between the oil pan and the oil pump, the suction tube plays a key role in the engine’s lubrication system. This system is designed to reduce friction between moving parts, cool the engine by dissipating heat, and carry away contaminants that could otherwise cause damage. The consistent flow of oil facilitated by the suction tube is essential for the engine’s performance and durability ¹.

Integration with Other Components

While the focus here is on the oil pan, it’s important to note that the lubricating oil suction tube also interacts with other components within the lubrication system. These include the oil filter, which cleans the oil before it is circulated back into the engine, and the various passages and galleries that distribute oil to critical engine parts such as the crankshaft, camshaft, and valve train. The suction tube’s role in this network is to ensure that the initial step of oil circulation—drawing oil from the pan—is performed efficiently and reliably ³.

Conclusion

The Lubricating Oil Suction Tube (Part #4946365) is a critical component in the engine lubrication system, ensuring efficient oil flow from the sump to the oil pump. Its high-quality construction, compatibility with various Cummins engines, and role in maintaining engine performance and longevity make it an essential part for any engine system. Proper installation, maintenance, and understanding of its function are key to maximizing its benefits and ensuring the engine’s optimal operation ¹²³⁴.