3901142
Camshaft Thrust Bearing
Cummins®

The Cummins 3901142 Camshaft Thrust Bearing is a component designed to facilitate the smooth operation of heavy-duty truck engines. Its role is to manage axial loads on the camshaft, ensuring the camshaft remains in the correct position and operates efficiently. This bearing is integral to maintaining the performance and longevity of the engine ¹.

Basic Concepts of Camshaft Thrust Bearings

A camshaft thrust bearing is a specialized bearing that supports the camshaft within an engine. Its primary function is to maintain the camshaft’s axial position, reducing friction and wear as the camshaft rotates. By providing a low-friction surface, the thrust bearing allows the camshaft to operate smoothly, which is vital for the engine’s overall efficiency and durability ².

Purpose of the 3901142 Camshaft Thrust Bearing

The 3901142 Camshaft Thrust Bearing plays a role in the operation of a truck engine by managing axial loads on the camshaft. This bearing ensures that the camshaft remains properly aligned and reduces the friction between moving parts. Proper alignment and reduced friction contribute to the engine’s efficiency, performance, and longevity ¹.

Key Features

The Cummins 3901142 Camshaft Thrust Bearing is designed with specific features to enhance its performance and durability. Constructed from high-quality materials, it offers a robust load-bearing capacity. The bearing is engineered to integrate seamlessly within the engine assembly, ensuring optimal performance and reliability. Its design includes precision-machined surfaces to minimize friction and wear ¹.

Benefits

The advantages provided by the 3901142 Camshaft Thrust Bearing include enhanced engine performance, increased durability, and improved reliability. By maintaining the camshaft’s position and reducing friction, this bearing contributes to the engine’s overall efficiency. Its robust construction ensures it can withstand the demanding conditions of heavy-duty truck operation, leading to longer engine life and reduced maintenance requirements ¹.

Installation Process

Proper installation of the 3901142 Camshaft Thrust Bearing involves several steps to ensure it functions correctly within the engine. Begin by preparing the engine block and camshaft, ensuring all surfaces are clean and free of debris. Place the bearing in its designated location, ensuring it is properly aligned with the camshaft. Use the appropriate tools to secure the bearing in place, following the manufacturer’s guidelines for torque specifications and alignment checks ¹.

Maintenance and Troubleshooting

Regular maintenance practices are recommended to ensure the longevity of the 3901142 Camshaft Thrust Bearing. Inspect the bearing during routine engine maintenance for signs of wear, such as excessive play or noise. Address any issues promptly to prevent further damage. Common troubleshooting tips include checking for proper alignment, ensuring the bearing is securely installed, and verifying that all related components are in good condition ¹.

Manufacturer: Cummins

Cummins Inc. is a renowned manufacturer in the automotive industry, known for its commitment to quality and innovation in engine components. With a rich history of producing reliable and high-performance engines and parts, Cummins has established a strong reputation for excellence. The company’s dedication to research and development ensures that its products, including the 3901142 Camshaft Thrust Bearing, meet the highest standards of quality and performance ¹.

Role of Part 3901142 Camshaft Thrust Bearing in Engine Systems

The camshaft thrust bearing, identified by part number 3901142, is a component in maintaining the proper operation of an engine’s camshaft. This bearing is specifically designed to manage the axial loads that the camshaft experiences during engine operation.

When integrated with a main bearing (.020) set, the camshaft thrust bearing works in concert to ensure that the camshaft remains properly aligned within the engine block. The main bearings support the crankshaft, which is directly influenced by the camshaft’s movement. Proper alignment and reduced friction between these components are vital for the smooth operation of the engine ².

In conjunction with a main bearing set, the camshaft thrust bearing helps in distributing the load evenly across the camshaft journal. This setup minimizes wear and tear on both the camshaft and the crankshaft, contributing to the longevity and efficiency of the engine.

Effective collaboration between the camshaft thrust bearing and the main bearings ensures that the valve timing remains consistent, which is fundamental for optimal engine performance. This synergy also aids in reducing noise and vibration, leading to a more stable and reliable engine operation ².

Conclusion

The Cummins 3901142 Camshaft Thrust Bearing is a critical component in the efficient operation of heavy-duty truck engines. By managing axial loads on the camshaft, this bearing ensures proper alignment and reduces friction, contributing to enhanced engine performance, durability, and reliability. Proper installation, regular maintenance, and understanding its role within the engine system are essential for maximizing the benefits of this Cummins part.