4086773
BREATHER,CRANKCASE
Cummins®

The Cummins Part #4086773 Crankcase Breather is designed to manage the ventilation of the crankcase in heavy-duty trucks. It allows gases and vapors produced during engine operation to escape, maintaining a balanced pressure within the crankcase. This balance is essential for the efficient and reliable operation of the engine.

Basic Concepts of Crankcase Breathers

A crankcase breather facilitates the release of gases and vapors that accumulate within the crankcase of an engine. These byproducts of the combustion process and lubrication system are vented to maintain pressure equalization and prevent contaminants from entering the engine. This process helps maintain the integrity of the engine’s internal components and ensures smooth operation ¹.

Purpose and Role in Truck Operation

This Cummins part ensures the crankcase remains at an optimal pressure by allowing gases and vapors to escape. This prevents the buildup of pressure that could lead to leaks or damage to engine seals. Additionally, it maintains the cleanliness of the engine oil by preventing the accumulation of contaminants, which can lead to reduced wear and improved engine performance ².

Key Features

The Cummins Part #4086773 is characterized by several key features that enhance its performance. These include a robust design resistant to harsh engine compartment conditions, the use of high-quality materials for durability and reliability, and filtration capabilities that trap contaminants before they can enter the engine. These features contribute to the overall efficiency and longevity of the engine.

Benefits of Using Cummins Crankcase Breather

The use of the Cummins Crankcase Breather offers several advantages. It contributes to improved engine efficiency by maintaining optimal crankcase pressure and cleanliness of the engine oil. This results in reduced wear and tear on engine components, leading to enhanced longevity. Additionally, the breather helps minimize the risk of engine damage due to pressure buildup, thereby supporting the overall reliability of the truck.

Installation and Compatibility

Proper installation of the Cummins Crankcase Breather is essential to ensure its effective operation. Specific guidelines should be followed to integrate the breather into the truck’s engine system, taking into account any requirements or considerations for different truck models. This ensures that the breather functions as intended within the engine’s ventilation system.

Maintenance and Troubleshooting

Regular maintenance practices are recommended to ensure the optimal performance of the Cummins Crankcase Breather. This includes periodic inspection and cleaning to remove any accumulated contaminants. Troubleshooting common issues may involve checking for blockages or leaks in the breather system, which can affect its operation. Addressing these issues promptly helps maintain the efficiency of the engine.

Environmental and Safety Considerations

The use of crankcase breathers, including the Cummins Part #4086773, involves considerations for environmental impact and safety. Emissions control is a key aspect, as the breather helps manage the release of gases and vapors from the engine. Workplace safety protocols should be observed during installation and maintenance to protect against potential hazards associated with engine components and fluids.

Cummins Corporation

Cummins Inc. is a well-established corporation with a history of providing high-quality components for the automotive industry, particularly in the realm of heavy-duty truck parts. The company’s product range includes a variety of engine components and systems that are known for their reliability and performance. Cummins’ reputation in the industry is built on a commitment to innovation, quality, and customer satisfaction.

BREATHER, CRANKCASE Part 4086773 Compatibility

The BREATHER, CRANKCASE part 4086773, manufactured by Cummins, is designed to fit seamlessly within the engine architecture of several Cummins engines. This part plays a role in maintaining the integrity of the crankcase by regulating the pressure and ensuring that the crankcase ventilation system functions correctly.

Cummins QSK45

The Cummins QSK45 engine, known for its robust performance and reliability, incorporates the BREATHER, CRANKCASE part 4086773. This part is integral to the engine’s ventilation system, ensuring that the crankcase pressure is maintained at optimal levels, preventing oil contamination and enhancing engine longevity.

Cummins CM500

Similarly, the Cummins CM500 engine benefits from the BREATHER, CRANKCASE part 4086773. This component is essential for the proper functioning of the crankcase ventilation system, ensuring that the engine operates efficiently and reliably. The design of this part ensures that it fits perfectly within the engine’s architecture, providing a seamless integration that enhances overall engine performance.

Grouping of Engines

Both the Cummins QSK45 and CM500 engines are part of Cummins’ lineup of high-performance diesel engines. The BREATHER, CRANKCASE part 4086773 is engineered to fit these engines, ensuring that they maintain optimal performance and reliability. This part is a component in the crankcase ventilation system, which is essential for the longevity and efficiency of these engines.

Role of Part 4086773 Breather, Crankcase in Engine Systems

The breather, crankcase (part 4086773) is a component in maintaining the health and efficiency of engine systems. Its primary function is to manage the pressure within the crankcase, ensuring that it remains balanced and does not exceed safe limits. This is achieved by allowing air and gases to escape from the crankcase, preventing the buildup of pressure that could lead to oil leaks, reduced engine performance, and potential damage to engine components.

In internal combustion engines, the crankcase breather system works in conjunction with the Positive Crankcase Ventilation (PCV) system. The PCV system recirculates crankcase gases back into the intake manifold, where they are burned during combustion. The breather, crankcase (part 4086773) serves as a secondary vent, providing an additional pathway for gases to escape if the PCV system becomes blocked or overwhelmed.

The breather, crankcase is typically connected to the crankcase via a hose or pipe, allowing it to draw in fresh air and release crankcase gases. This connection helps to maintain a slight vacuum within the crankcase, which aids in the proper sealing of piston rings and reduces oil consumption. Additionally, the breather helps to keep the crankcase environment clean by preventing the accumulation of contaminants that could otherwise enter the engine through the PCV system.

Conclusion

In summary, the breather, crankcase (part 4086773) plays a role in ensuring the crankcase maintains optimal pressure and cleanliness, contributing to the overall efficiency and longevity of the engine.