4086817
BREATHER,CRANKCASE
Cummins®

Introduction

The Cummins 4086817 Crankcase Breather is a component designed to facilitate the proper ventilation of the crankcase in commercial trucks. Its purpose is to manage the pressure and release contaminants that accumulate within the crankcase during engine operation. This breather plays a role in maintaining the efficiency and longevity of the engine by ensuring that the crankcase environment remains optimal for engine performance ².

Basic Concepts of Crankcase Breathers

A crankcase breather is a device that allows air to enter and exit the crankcase of an engine. It functions by venting gases that are produced during the combustion process and ensuring that the crankcase does not become pressurized. Proper ventilation is vital for the health of the engine, as it prevents the buildup of harmful gases and contaminants that can lead to engine wear and reduced performance ³.

Role of the Cummins 4086817 Crankcase Breather in Truck Operation

The Cummins 4086817 Crankcase Breather is specifically engineered to address the unique demands of commercial truck engines. It helps manage the pressure within the crankcase by allowing excess gases to escape while preventing the ingress of contaminants. This breather also aids in the removal of moisture and other byproducts of combustion, which can accumulate and cause damage if not properly vented ⁴.

Key Features of the Cummins 4086817 Crankcase Breather

The Cummins 4086817 Crankcase Breather is constructed with high-quality materials to ensure durability and effectiveness. It incorporates advanced filtration capabilities to trap contaminants before they can re-enter the engine. Unique design elements, such as a robust housing and precise filtration media, contribute to its reliable performance in demanding environments ¹.

Benefits of Using the Cummins 4086817 Crankcase Breather

Utilizing the Cummins 4086817 Crankcase Breather offers several advantages. It contributes to improved engine performance by maintaining optimal crankcase conditions. Reduced wear on engine components is another benefit, as the breather helps to keep the crankcase clean and free from harmful contaminants. Additionally, the breather enhances the longevity of the engine by promoting a stable operating environment ².

Troubleshooting and Maintenance Suggestions

To ensure the Cummins 4086817 Crankcase Breather operates effectively, it is important to be aware of common issues such as clogging or damage to the filtration system. Routine maintenance includes inspecting the breather for signs of wear or contamination and cleaning or replacing the filter as necessary. Regular checks can help identify potential problems early and maintain optimal performance ³.

Installation Guidelines

Proper installation of the Cummins 4086817 Crankcase Breather involves several steps. Begin by ensuring the engine is cool and the vehicle is parked on a level surface. Disconnect the old breather and clean the mounting area. Align the new breather with the mounting points and secure it in place. Finally, verify that all connections are tight and there are no leaks in the system ⁴.

Common Myths and Misconceptions

There are several misconceptions about crankcase breathers, including the belief that they are merely optional accessories. In reality, crankcase breathers play a role in engine maintenance by ensuring proper ventilation and contaminant removal. Understanding their function can help dispel these myths and highlight their importance in engine health ¹.

Environmental Impact and Efficiency

The Cummins 4086817 Crankcase Breather contributes to the overall efficiency of the engine by maintaining optimal crankcase conditions, which can lead to improved fuel efficiency. Additionally, by reducing the release of harmful emissions through effective ventilation, it plays a role in minimizing the environmental impact of commercial truck operations ².

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history of innovation and a commitment to quality, Cummins serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor locations and approximately 6,700 dealer locations.

Application in Cummins Engines

• QSK45 CM500: The BREATHER, CRANKCASE part 4086817 is specifically engineered to fit the QSK45 CM500 engine. This engine is known for its robust performance and reliability, often utilized in heavy-duty applications such as marine and industrial sectors. The breather plays a role in maintaining the pressure balance within the crankcase, preventing the build-up of harmful gases and ensuring the longevity of the engine ³.

• Other Cummins Engines: While the primary focus is on the QSK45 CM500, the BREATHER, CRANKCASE part 4086817 is also compatible with other Cummins engines. This part’s design allows it to fit into various engine models, providing a standardized solution for crankcase ventilation across multiple platforms. Its adaptability ensures that it can be used in different engine configurations, maintaining the same level of efficiency and reliability ⁴.

Role of Part 4086817 Breather, Crankcase in Engine Systems

The breather, crankcase, identified by part number 4086817, is a component in maintaining the health and efficiency of an engine system. Its primary function is to manage the pressure within the crankcase by allowing air to escape, which prevents the buildup of harmful gases and moisture. This is particularly important in ensuring that the engine’s internal components, such as the pistons, crankshaft, and connecting rods, operate smoothly and efficiently ¹.

In conjunction with the Positive Crankcase Ventilation (PCV) system, the breather, crankcase helps to route these expelled gases back into the intake manifold. This not only reduces emissions but also ensures that any unburned hydrocarbons are re-combusted, enhancing fuel efficiency and reducing the engine’s environmental impact ².

The breather, crankcase also interacts with the oil pan and oil filter system. By regulating the pressure within the crankcase, it helps to maintain a stable oil level and prevents oil from being forced out through seals and gaskets. This is vital for the lubrication system, ensuring that all moving parts receive adequate oil supply to minimize wear and tear ³.

Furthermore, the breather, crankcase plays a role in the overall engine cooling system. By allowing fresh air to enter the crankcase, it helps to dissipate heat generated by the engine’s operation. This aids in maintaining optimal operating temperatures, which is essential for the longevity and performance of the engine ⁴.

Conclusion

The Cummins 4086817 Crankcase Breather is a critical component for maintaining the efficiency and longevity of commercial truck engines. By ensuring proper ventilation and contaminant removal, it contributes to improved engine performance, reduced wear on components, and enhanced longevity. Regular maintenance and proper installation are essential to maximize the benefits of this part.