5255312
Rocker Lever Cover Seal
Cummins®

The Rocker Lever Cover Seal, identified by Part #5255312, is a component manufactured by Cummins, a well-established name in the automotive and heavy-duty truck industry. This seal is integral to the functionality of heavy-duty truck engines, ensuring the efficient operation of the rocker lever cover system. Cummins, known for its commitment to quality and innovation, produces this part to meet the rigorous demands of commercial and industrial applications ¹.

Basic Concepts

The Rocker Lever Cover Seal is designed to fit over the rocker lever cover, which houses the rocker arms that actuate the engine’s valves. This seal comprises several components, including a durable elastomer material that forms a tight seal around the cover. Its primary function is to prevent oil leaks from the rocker lever cover, thereby maintaining the integrity of the engine’s lubrication system. The seal must withstand high temperatures and pressures, ensuring a consistent and reliable seal over the life of the engine ².

Role and Function

In the operation of a truck engine, the Rocker Lever Cover Seal plays a significant role by maintaining the integrity of the oil within the rocker lever cover. This seal prevents oil from escaping, which could lead to insufficient lubrication of the rocker arms and valves. Proper lubrication is vital for the smooth operation and longevity of these components. Additionally, the seal helps in containing any contaminants that might otherwise enter the engine, thus protecting internal components from damage.

Key Features

The design and material characteristics of the Rocker Lever Cover Seal are tailored to ensure durability, precise fit, and optimal performance. Constructed from high-quality elastomer materials, the seal is resistant to oil, heat, and mechanical stress. Its design allows for a snug fit around the rocker lever cover, accommodating minor irregularities in the surface while maintaining a robust seal. These features contribute to the seal’s reliability and longevity in demanding engine environments.

Benefits

The Rocker Lever Cover Seal offers several advantages that contribute to enhanced engine performance and longevity. By effectively preventing oil leaks, it ensures that the engine maintains proper lubrication, which is crucial for the efficient operation of moving parts. This results in reduced wear and tear on critical components, leading to lower maintenance needs. Additionally, the seal’s durable construction and reliable performance help in prolonging the overall life of the engine, offering value to fleet operators and maintenance professionals.

Troubleshooting and Maintenance

Identifying common issues with the Rocker Lever Cover Seal involves checking for signs of oil leaks around the rocker lever cover. If leaks are detected, it may indicate a compromised seal that requires attention. Regular maintenance practices include inspecting the seal during routine engine checks and replacing it if signs of wear or damage are present. Replacement or repair should be conducted following manufacturer guidelines to ensure proper fit and function, thereby maintaining the seal’s effectiveness in preventing leaks and protecting the engine.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a history spanning over a century, Cummins is renowned for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product range serves various industries, from automotive and heavy-duty trucks to industrial and power generation applications. Cummins’ dedication to advancing technology and improving efficiency underscores its position as a trusted partner in the automotive industry.

Rocker Lever Cover Seal Compatibility with Cummins Engines

The Rocker Lever Cover Seal part number 5255312, manufactured by Cummins, is designed to fit a variety of Cummins engines. This seal is crucial for maintaining the integrity of the engine’s rocker lever cover, ensuring that oil and other fluids remain within the system, preventing leaks and maintaining optimal engine performance.

Compatible Engines

• F2.8 CM2620 F135B
• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129
• QSF2.8 CM2880 F104
• QSF2.8 CM2880 F105
• QSF2.8 CM2880 F108
• QSF2.8 CM2880 F114
• R2.8 CM2220 R101B

Grouping of Compatible Engines

• ISF2.8 CM2220 Series:

  • ISF2.8 CM2220 F117
  • ISF2.8 CM2220 F129

• QSF2.8 CM2880 Series:

  • QSF2.8 CM2880 F104
  • QSF2.8 CM2880 F105
  • QSF2.8 CM2880 F108
  • QSF2.8 CM2880 F114

• Other Compatible Engines:

  • F2.8 CM2620 F135B
  • R2.8 CM2220 R101B

This seal is engineered to provide a reliable fit across these engine models, ensuring that each one benefits from the same level of protection and performance.

Role of Part 5255312 Rocker Lever Cover Seal in Engine Systems

The part 5255312 Rocker Lever Cover Seal is an essential component in maintaining the integrity and efficiency of engine systems. It is specifically designed to fit within the valve cover assembly, ensuring that the rocker lever cover remains sealed against external contaminants and internal pressure variations.

When installed, the Rocker Lever Cover Seal interfaces directly with the valve cover, creating a tight seal that prevents oil leaks and the ingress of dirt or moisture. This seal is particularly important in the upper engine gasket kit, where multiple components such as the valve cover gaskets and rocker arm gaskets work in concert to maintain a sealed environment.

The seal’s proper fit and function are vital for the valve cover to perform its role effectively. The valve cover protects the valve train components, including the rocker arms, pushrods, and camshaft, from external elements. By ensuring a secure seal, the Rocker Lever Cover Seal helps maintain the cleanliness and lubrication of these critical moving parts.

Conclusion

In summary, the integration of the part 5255312 Rocker Lever Cover Seal within the engine system enhances the overall performance and longevity of the engine by ensuring that the valve cover assembly operates in a controlled and sealed environment. Regular maintenance and proper installation of this Cummins part are essential to maximize its benefits and ensure the engine’s optimal operation.