4086731
BREATHER,CRANKCASE
Cummins®

Introduction

The Cummins Part #4086731, known as the Crankcase Breather, is designed to facilitate the ventilation of the crankcase in commercial truck engines. This component ensures efficient engine operation by managing pressure and expelling contaminants from the crankcase.

Basic Concepts of Crankcase Breather

A crankcase breather allows air to enter and exit the crankcase, maintaining balanced pressure crucial for engine operation. It expels moisture, unburned fuel, and contaminants, preventing pressure buildup that can lead to oil leaks and engine issues ¹.

Purpose of the Crankcase Breather

The primary functions of the crankcase breather include managing crankcase pressure and expelling contaminants and moisture from engine oil. It allows fresh air to enter, removing combustion gases that can accumulate and cause pressure buildup, ensuring clean oil and effective engine performance ¹.

Key Features of Cummins Part #4086731

Constructed from high-quality materials, the Cummins Crankcase Breather is designed for durability and resistance to corrosion. Its precise filtration ensures clean air enters the crankcase while effectively expelling contaminants, enhancing performance and longevity ².

Benefits of Using Cummins Crankcase Breather

Installing the Cummins Crankcase Breather offers advantages such as improved engine performance, enhanced longevity due to clean oil and balanced pressure, improved fuel efficiency, and reduced emissions, making it valuable for performance and environmental considerations ¹.

Installation and Compatibility

Proper installation of the Cummins Crankcase Breather is crucial for effective function. It is compatible with various Cummins engine models and other commercial truck makes, provided fitting and specifications match.

Maintenance and Troubleshooting

Regular maintenance of the crankcase breather is important for continued effective operation. This includes checking for damage, ensuring secure fitting, and cleaning or replacing the filter as necessary. Common issues include blockages leading to pressure buildup or damage to the breather itself ².

Cummins: A Brief Overview

Cummins Inc. is renowned in the commercial truck industry for its high-quality engine components and commitment to innovation. The company’s product range includes various engine components designed to enhance performance and longevity, reflecting its commitment to quality and innovation ².

Role of Part 4086731 BREATHER, Crankcase in Engine Systems

The BREATHER,CRANKCASE part 4086731 is essential in engine systems for managing gases within the crankcase. It facilitates the release of gases produced during engine operation, ensuring a stable pressure environment.

Interaction with Engine Components

1. Crankcase Ventilation System: The breather allows the escape of gases such as unburned hydrocarbons and moisture, preventing pressure buildup that could lead to oil leaks and compromised engine seals.
2. Positive Crankcase Ventilation (PCV) Valve: It works with the PCV valve to regulate gas flow, reducing emissions and recycling unburned fuel, enhancing fuel efficiency.
3. Oil Management: By allowing gases to escape, the breather maintains engine oil integrity, preventing contamination and reducing wear on engine components.
4. Engine Performance: Efficient crankcase ventilation contributes to overall engine performance, ensuring optimal pressure conditions vital for durability and reliability.
5. Emission Control: The breather is part of the engine’s emission control strategy, managing crankcase gases and routing them back into the combustion process to minimize harmful pollutant release.

Conclusion

The BREATHER,CRANKCASE part 4086731 plays a significant role in maintaining the health and efficiency of engine systems by ensuring proper ventilation and pressure management within the crankcase. Its integration into the crankcase design of engines like the QSK45 CM500 ensures optimal performance and longevity, contributing to the overall reliability and efficiency of commercial truck engines.