3696555
Valve Stem Seal
Cummins®

The Valve Stem Seal 3696555 by Cummins is a critical component designed to enhance the operation of commercial truck engines. Cummins, a renowned manufacturer in the diesel engine industry, produces this seal to ensure efficient engine performance. This overview will delve into the purpose and role of the Valve Stem Seal 3696555 within the context of truck engine systems.

Basic Concepts of Valve Stem Seals

A valve stem seal is a component found in internal combustion engines that serves to contain oil within the engine while allowing the valve stem to move freely. Its primary function is to prevent oil from leaking into the combustion chamber, which could lead to contamination and inefficient engine operation. These seals are typically made from materials such as rubber, PTFE (polytetrafluoroethylene), or a combination of both, chosen for their durability, resistance to oil, and ability to maintain a seal under varying temperatures and pressures ¹.

Role of the Valve Stem Seal 3696555 in Truck Operation

The Valve Stem Seal 3696555 plays a significant role in the efficient operation of a truck engine. It helps maintain compression within the cylinders by preventing oil leakage into the combustion chamber. This ensures that the air-fuel mixture burns more efficiently, contributing to better engine performance. Additionally, the seal supports proper valve function by allowing the valve stem to move smoothly while keeping oil contained, which is vital for the longevity and reliability of the engine ².

Key Features of the Valve Stem Seal 3696555

The Valve Stem Seal 3696555 is distinguished by several features that enhance its performance and durability. Its design incorporates materials that offer superior resistance to oil and temperature fluctuations. The seal is engineered to provide a tight fit around the valve stem, ensuring effective containment of oil. Unique characteristics, such as reinforced edges or specialized coatings, may be included to further improve its resilience and functionality in demanding engine environments.

Benefits of Using the Valve Stem Seal 3696555

Utilizing the Valve Stem Seal 3696555 offers several advantages for truck engines. It contributes to improved engine efficiency by ensuring that oil does not enter the combustion chamber, thereby maintaining optimal compression levels. Reduced oil consumption is another benefit, as the seal effectively contains oil within the engine. Enhanced durability and prolonged engine life are also notable advantages, as the seal’s robust design and materials help it withstand the rigors of commercial truck operation. These benefits collectively contribute to overall truck performance and can lead to lower maintenance costs over time ³.

Troubleshooting and Maintenance

Identifying issues related to valve stem seals, such as oil leaks or diminished engine performance, is crucial for maintaining engine health. Routine maintenance practices, including regular inspections and replacements as needed, can ensure the longevity and optimal performance of the Valve Stem Seal 3696555. When replacement is necessary, following best practices for installation, such as proper seating and torque specifications, is important to maintain the seal’s effectiveness.

About Cummins

Cummins Inc. is a leading manufacturer of diesel engines and related technologies, with a strong reputation in the commercial truck industry. Founded with a commitment to quality, innovation, and customer satisfaction, Cummins has a history of producing reliable and efficient engine components. The company’s dedication to these principles is evident in its product line, including the Valve Stem Seal 3696555, which is designed to meet the high standards of commercial truck operators.

Valve Stem Seal 3696555 Compatibility with Cummins Engines

The Valve Stem Seal part number 3696555, manufactured by Cummins, is designed to fit a variety of their engine models. This seal is crucial for maintaining the integrity of the engine’s valve system by preventing oil from leaking past the valve stems. Below is a detailed description of its compatibility with the specified engines:

ISG11 CM2880 G108 and ISG12 CM2880 G107

Both ISG11 CM2880 G108 and ISG12 CM2880 G107 engines are part of the Cummins Industrial Series Gas (ISG) lineup. The Valve Stem Seal 3696555 is compatible with these engines, ensuring that the valve stems are properly sealed to prevent oil leakage.

ISG12 G CMOH6.0 G111

The ISG12 G CMOH6.0 G111 engine, another variant in the ISG series, also fits the Valve Stem Seal 3696555. This seal is essential for maintaining the engine’s performance and longevity by keeping the valve system free from oil contamination.

QSG12 CM2880 G112 and QSG12/X12 CM2350 G110

The QSG12 CM2880 G112 and QSG12/X12 CM2350 G110 engines, which belong to the Cummins Quick Service Gas (QSG) series, are also compatible with the Valve Stem Seal 3696555. This compatibility ensures that these engines maintain optimal sealing around the valve stems.

X11 CM2670 X126B and X12 CM2350 X119B

The X11 CM2670 X126B and X12 CM2350 X119B engines, part of the Cummins X Series, are designed to work with the Valve Stem Seal 3696555. This seal is critical for these engines to prevent oil from seeping past the valve stems, thereby maintaining engine efficiency.

X12 CM2670 X121B and X12N CMMDG1 X143B

The X12 CM2670 X121B and X12N CMMDG1 X143B engines, which are also part of the Cummins X Series, are compatible with the Valve Stem Seal 3696555. This seal ensures that the valve stems are properly sealed, preventing oil leakage and maintaining the engine’s performance.

X13 CM2670 X122B

The X13 CM2670 X122B engine, another variant in the Cummins X Series, is also compatible with the Valve Stem Seal 3696555. This seal is essential for maintaining the sealing integrity of the valve stems in this engine model.

Role of Part 3696555 Valve Stem Seal in Engine Systems

The Valve Stem Seal (part 3696555) is an essential component in the efficient operation of various engine systems. It is strategically positioned around the valve stem within the Cylinder Head to perform its functions effectively.

Interaction with the Cylinder Head

In the Cylinder Head, the Valve Stem Seal ensures a tight fit around the valve stem. This seal prevents oil from leaking into the combustion chamber, which could otherwise lead to increased emissions and reduced engine performance. The seal works in conjunction with the Upper Engine Gasket Kit to maintain the integrity of the sealing surfaces.

Coordination with the Camshaft and Rocker Lever

The Valve Stem Seal operates in close proximity to the Camshaft and Rocker Lever. As the Camshaft rotates, it actuates the Rocker Lever, which in turn opens and closes the valves. The seal ensures that the valve stem moves smoothly within the cylinder head without excessive friction or oil leakage.

Integration with the Intake Valve Kit

When considering the Intake Valve Kit, the Valve Stem Seal plays a supportive role by maintaining a clean environment for the intake process. By preventing oil contamination, the seal helps ensure that the intake valves function optimally, contributing to better air-fuel mixture intake and overall engine efficiency.

Contribution to the Cylinder Top Level Assembly Head

In the Cylinder Top Level Assembly Head, the Valve Stem Seal is part of a complex system that includes the intake and exhaust valves, springs, and retainers. Its role is to provide a reliable seal that supports the dynamic movement of these components while preventing oil from entering the combustion chamber.

Synergy with the Injector

Although the Injector is primarily responsible for fuel delivery, the efficiency of the injector’s operation is indirectly influenced by the Valve Stem Seal. A well-sealed valve system ensures that the air-fuel mixture is correctly prepared, allowing the injector to deliver fuel into a clean and oil-free environment. This results in more precise fuel atomization and combustion.

Conclusion

In summary, the Valve Stem Seal (part 3696555) is a vital component that interacts with multiple engine systems to ensure optimal performance and efficiency. Its role in maintaining seals and preventing oil leakage is fundamental to the smooth operation of the engine.