3935892
Rocker Lever Shaft
Cummins®

The Rocker Lever Shaft 3935892, manufactured by Cummins, is a component designed for use in commercial trucks. Cummins is a well-established name in the manufacturing of diesel engines and related components, known for its commitment to quality and innovation. This part plays a role in the engine’s operation by facilitating valve actuation, which is vital for the engine’s performance and efficiency ⁴.

Basic Concepts of Rocker Lever Shafts

A rocker lever shaft is a mechanical component found in internal combustion engines. Its primary function is to transfer motion from the camshaft to the valves, allowing them to open and close at precise intervals. This interaction ensures that the air-fuel mixture enters the combustion chamber at the correct time and that exhaust gases are expelled efficiently. The mechanical principles behind its operation involve leverage and pivot points, which amplify the camshaft’s motion to actuate the valves effectively ¹.

Role of the Rocker Lever Shaft in Truck Engines

The 3935892 is integral to the operation of a truck engine. It contributes to valve operation by connecting the camshaft’s motion to the valves, ensuring they open and close in sync with the engine’s cycles. This precise timing is crucial for optimal engine performance, fuel efficiency, and emissions control. The rocker lever shaft’s role in maintaining this timing under varying engine loads and speeds is fundamental to the engine’s overall operation ².

Key Features of the Rocker Lever Shaft 3935892

The 3935892 is engineered with specific design and construction features to enhance its functionality and durability. It is crafted from high-quality materials that offer resistance to wear and corrosion, ensuring longevity in demanding truck engine environments. The engineering specifications of this component include precise tolerances and surface finishes that contribute to smooth operation and reduced friction. Unique attributes may include specialized coatings or treatments that further enhance its performance and reliability ³.

Benefits of Using the Rocker Lever Shaft 3935892

Utilizing the 3935892 in truck engines can lead to improved engine efficiency, reliability, and performance. Its design and construction contribute to more precise valve actuation, which can result in better fuel economy and reduced emissions. The enhanced durability and reliability of this component can lead to fewer maintenance intervals and longer engine life, positively impacting truck operation and maintenance costs ⁴.

Troubleshooting Common Issues with Rocker Lever Shafts

Identifying and addressing common problems associated with rocker lever shafts is important for maintaining optimal engine performance. Issues may include noise, decreased engine performance, or valve train problems. Troubleshooting steps involve inspecting the shaft for signs of wear, checking for proper lubrication, and ensuring that all related components are in good condition. Recommended solutions may include cleaning, lubrication, or replacement of worn parts to restore efficient operation ¹.

Maintenance Tips for Rocker Lever Shafts

Regular maintenance of rocker lever shafts is key to ensuring their longevity and efficient operation. Inspection techniques involve checking for wear, corrosion, or damage during routine engine maintenance. Cleaning procedures should include removing any buildup that could affect performance, and lubrication recommendations should follow the manufacturer’s guidelines to reduce friction and wear. Adhering to these maintenance practices can help prevent issues and ensure the rocker lever shaft continues to operate smoothly ².

Compatibility of Rocker Lever Shaft Part 3935892 with Cummins Engines

The 3935892, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral in the operation of the engine’s valve train, ensuring smooth and reliable engine performance. Below is a detailed description of the engines with which this part is compatible:

ISB Series Engines

• ISB CM2150
• ISB CM550
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB5.9 CM2880 B110
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118

ISBE Series Engines

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

QSB Series Engines

• QSB4.5 CM2250 EC
• QSB4.5 CM850(CM2850)
• QSB5.9 44 CM550
• QSB5.9 CM2880 B115
• QSB5.9 CM850
• QSB6.7 CM2250
• QSB6.7 CM850(CM2850)

B Series Engines

• 6B5.9
• B4.5 RGT
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• ISD4.5 CM2220 D108

This comprehensive compatibility ensures that the 3935892 can be used across a wide range of Cummins engines, providing a reliable and efficient solution for maintaining the engine’s valve train.

Understanding the Role of Part 3935892 Rocker Lever Shaft in Engine Systems

The 3935892 is an integral component in the operation of the rocker lever and rocker lever assembly within engine systems. This shaft serves as the pivotal connection point that allows for the transfer of motion from the camshaft to the valves.

Interaction with the Rocker Lever

The Rocker Lever is a mechanical device that amplifies the motion of the camshaft. The Rocker Lever Shaft is mounted within the rocker lever, allowing it to pivot. As the camshaft lobe rises, it pushes against one end of the rocker lever. This motion is then transferred across the shaft to the other end of the lever, which in turn operates the valve. The shaft ensures smooth and precise movement, which is essential for the efficient opening and closing of the valves ³.

Integration with the Rocker Lever Assembly

The Rocker Lever Assembly is a complete unit that includes the rocker lever, shaft, and often additional components such as springs and adjusters. The Rocker Lever Shaft is central to this assembly, providing the necessary pivot point for the rocker lever to function. The assembly is designed to maintain valve timing and ensure that the valves open and close at the correct intervals in sync with the engine’s operation. The shaft’s design and material are selected to withstand the high stresses and temperatures within the engine compartment, ensuring reliable performance over time ⁴.

Conclusion

In summary, the 3935892 plays a significant role in the functionality of the rocker lever and rocker lever assembly. Its precise engineering and strategic placement within these components are vital for the overall performance and durability of the engine system.