4013996
Valve Stem Seal
Cummins®

The Cummins 4013996 Valve Stem Seal is a component designed for use in heavy-duty truck engines. Its purpose is to ensure the proper functioning of the valve system within the engine. This seal plays a role in maintaining the integrity of the valve operation, which is significant for the overall performance and efficiency of heavy-duty trucks ¹.

Basic Concepts of Valve Stem Seals

A Valve Stem Seal is a component that fits around the valve stem in an engine. Its function is to prevent oil from leaking into the combustion chamber while allowing the valve to move freely. This seal contributes to the overall performance and efficiency of the engine by maintaining a clean combustion environment and ensuring that the valve operates smoothly without excessive wear ².

Purpose of the Cummins 4013996 Valve Stem Seal

The Cummins 4013996 Valve Stem Seal plays a role in the operation of a truck engine by maintaining proper valve operation and engine efficiency. It ensures that oil does not enter the combustion chamber, which could lead to contamination and reduced performance. By providing a seal that allows the valve stem to move freely, it contributes to the longevity and reliability of the engine ².

Key Features

The Cummins 4013996 Valve Stem Seal is characterized by its design and the materials used in its construction. It is engineered to withstand the high temperatures and pressures within the engine environment. The seal is made from durable materials that offer resistance to wear and degradation, ensuring long-lasting performance. Its design allows for a snug fit around the valve stem, providing an effective barrier against oil leakage ¹.

Benefits

Using the Cummins 4013996 Valve Stem Seal is associated with several benefits. It contributes to improved engine performance by ensuring that the valve system operates efficiently. This seal can lead to increased fuel efficiency, as a well-sealed valve system reduces the risk of oil contamination in the combustion process. Additionally, it may reduce maintenance requirements by minimizing the wear on valve components and preventing oil-related issues ².

Installation and Maintenance

Proper installation of the Cummins 4013996 Valve Stem Seal involves following recommended procedures and using the appropriate tools. It is important to ensure that the seal is correctly positioned and seated to provide an effective barrier. Regular maintenance, such as checking for signs of wear or damage, can help ensure the longevity and effectiveness of the seal. Following manufacturer guidelines for maintenance intervals and procedures is advised ².

Troubleshooting Common Issues

Common problems associated with Valve Stem Seals include leaks or wear. If a seal is not functioning correctly, it may allow oil to enter the combustion chamber, leading to performance issues. Troubleshooting steps may involve inspecting the seal for damage, ensuring it is properly installed, and replacing it if necessary. Addressing these issues promptly can help maintain engine performance and efficiency ².

Manufacturer: Cummins

Cummins is a well-established manufacturer with a reputation for quality and innovation in the automotive components industry. The company has a history of developing reliable and high-performance parts for heavy-duty applications. Cummins’ commitment to quality is reflected in the design and construction of components like the 4013996 Valve Stem Seal, ensuring that they meet the demanding requirements of heavy-duty truck engines ³.

Compatibility with Engine Models

The Valve Stem Seal part number 4013996, manufactured by Cummins, is designed to fit seamlessly with several engine models. This part is crucial for maintaining the integrity of the engine’s sealing system, ensuring that oil does not leak past the valve stems.

For the QSV81G and QSV91G engines, the Valve Stem Seal 4013996 is engineered to provide a precise fit, ensuring optimal performance and longevity. These engines benefit from the seal’s ability to withstand high temperatures and pressures, maintaining a tight seal that prevents oil from escaping.

In the case of the QSV91-G4 CM558/CM700 V102 engine, the Valve Stem Seal 4013996 is specifically tailored to fit the unique design and requirements of this model. This seal is crafted to handle the specific operational conditions of the QSV91-G4 CM558/CM700 V102, ensuring that it can maintain a reliable seal even under demanding conditions.

Overall, the Valve Stem Seal 4013996 is a critical component for these engines, providing essential sealing capabilities that help maintain engine efficiency and performance ³.

Role of Part 4013996 Valve Stem Seal in Engine Systems

The 4013996 Valve Stem Seal is an essential component that ensures the efficient operation of various engine systems. It is strategically positioned within the Cylinder Assembly Head to maintain the integrity of the combustion process.

Interaction with Key Components

1. Cylinder Head: The Valve Stem Seal works in conjunction with the Cylinder Head to prevent oil leakage along the valve stem. This ensures that the oil does not enter the combustion chamber, which could lead to inefficient burning of the air-fuel mixture.

2. Camshaft and Camshaft Mounting: As the Camshaft operates, it opens and closes the valves. The Valve Stem Seal ensures that the movement of the valve stem is smooth and free from oil contamination, which is vital for the precise timing required by the Camshaft.

3. Connecting Rod and Piston: Efficient combustion directly influences the performance of the Connecting Rod and Piston. By maintaining a clean combustion environment, the Valve Stem Seal indirectly supports the optimal function of these components, leading to smoother engine operation.

4. Cylinder Head Kit and Overhaul Kit: When performing maintenance with a Cylinder Head Kit or an Overhaul Kit, the Valve Stem Seal is often replaced to ensure that the engine returns to peak performance. Its role in these kits is to provide a fresh seal that contributes to the overall reliability and efficiency of the engine.

5. Head Overhaul Kit: In a Head Overhaul Kit, the Valve Stem Seal is a key replacement part. Its function is to restore the seal between the valve stem and the cylinder head, which is essential for maintaining compression and preventing oil leaks.

6. Performance Parts: For engines equipped with performance parts, the Valve Stem Seal must be of high quality to handle the increased stress and higher operating temperatures. This ensures that the engine maintains its performance enhancements without compromising on reliability.

Conclusion

In summary, the 4013996 Valve Stem Seal plays a significant role in maintaining the efficiency and performance of various engine components. Its proper function is essential for the smooth operation of the engine, particularly in high-performance applications. Regular maintenance and proper installation are key to ensuring the longevity and effectiveness of this Cummins part ¹²³.