5367679
BREATHER,CRANKCASE
Cummins®

The Cummins 5367679 Crankcase Breather is a component designed for use in heavy-duty truck engines. Its purpose is to manage the pressure within the engine’s crankcase and facilitate the ventilation of gases produced during engine operation. This component is integral to maintaining the efficiency and reliability of the engine.

Basic Concepts of Crankcase Breathers

A crankcase breather is a device that allows gases to escape from the crankcase of an engine. As the engine operates, it produces gases and moisture that accumulate in the crankcase. The breather system is designed to release these gases and prevent the buildup of pressure, which could otherwise lead to leaks or damage to engine seals and gaskets. The breather operates on the principle of allowing gases to escape while preventing contaminants from entering the crankcase ¹.

Purpose of the Cummins 5367679 Crankcase Breather

This Cummins part plays a role in the operation of a truck engine by managing crankcase pressure and facilitating the release of gases. It ensures that the crankcase maintains a stable pressure, which is important for the proper functioning of engine seals and the overall performance of the engine. By ventilating the crankcase, it helps to remove contaminants and moisture that could otherwise lead to engine wear or failure.

Key Features

The Cummins 5367679 Crankcase Breather is characterized by its robust design and the use of high-quality materials. It is engineered to withstand the harsh conditions present in heavy-duty truck engines. The breather includes features such as a filtration system to trap contaminants and a valve mechanism that regulates the flow of gases. These attributes contribute to its reliable performance and durability.

Benefits of Using the Cummins 5367679 Crankcase Breather

The use of this part offers several advantages. It contributes to improved engine performance by ensuring that the crankcase operates under optimal pressure conditions. The breather also enhances engine longevity by reducing the risk of wear and damage caused by pressure buildup. Additionally, it simplifies maintenance by effectively managing crankcase ventilation, which can reduce the frequency of required maintenance interventions.

Installation Process

Installing the Cummins 5367679 Crankcase Breather involves several steps. First, the old breather, if present, should be removed. The new breather should then be positioned according to the manufacturer’s instructions, ensuring a proper fit. Tools such as wrenches may be required to secure the breather in place. It is important to follow the installation guidelines to ensure the breather functions correctly and to avoid any potential issues.

Troubleshooting Common Issues

Common problems with crankcase breathers can include blockages or malfunctions in the valve mechanism. These issues can lead to pressure buildup or contamination within the crankcase. To address these problems, it is recommended to inspect the breather regularly and clean or replace it as necessary. Maintenance practices such as checking for blockages and ensuring the valve operates correctly can help prevent issues.

Maintenance Tips

To ensure the optimal functioning of the Cummins 5367679 Crankcase Breather, regular maintenance is recommended. This includes periodic inspection of the breather for signs of wear or blockage. Cleaning the breather according to the manufacturer’s guidelines can help maintain its efficiency. Additionally, following the recommended inspection intervals can aid in identifying any potential issues before they lead to more significant problems.

Cummins Overview

Cummins Inc. is a well-established company with a long history in the production of engines and power generation equipment. The company is known for its wide range of products, including engines for heavy-duty trucks. Cummins has built a reputation for quality and reliability in the automotive industry, particularly in the segment of heavy-duty truck components. The company’s commitment to innovation and customer satisfaction has contributed to its standing as a leader in the field.

Cummins Crankcase Breather Part 5367679 Compatibility

The Cummins Crankcase Breather part 5367679 is designed to fit a variety of Cummins engines, ensuring efficient and effective ventilation of the crankcase. This part is crucial for maintaining the health and longevity of the engine by preventing the buildup of harmful gases and moisture within the crankcase.

B6.7 CM2670 B153B

The B6.7 CM2670 B153B engine benefits from the use of the 5367679 crankcase breather. This part ensures that the crankcase is properly ventilated, which is essential for the engine’s performance and durability.

ISB/ISD4.5 CM2150 B119

For the ISB/ISD4.5 CM2150 B119 engine, the 5367679 crankcase breather is a critical component. It helps manage the pressure within the crankcase, preventing issues such as oil foaming and contamination.

ISB/ISD6.7 CM2150 SN and ISBE CM2150

The ISB/ISD6.7 CM2150 SN and ISBE CM2150 engines also utilize the 5367679 crankcase breather. This part is essential for maintaining the integrity of the crankcase environment, ensuring that the engine operates smoothly and efficiently.

ISBE4 CM850

Lastly, the ISBE4 CM850 engine is compatible with the 5367679 crankcase breather. This part plays a vital role in the engine’s ventilation system, helping to expel unwanted gases and moisture from the crankcase.

Role of Part 5367679 Crankcase Breather in Engine Systems

In the context of engine systems, the part 5367679 Crankcase Breather is instrumental in maintaining the integrity and efficiency of the crankcase environment. This component is designed to manage the pressure within the crankcase by allowing gases produced during combustion to escape.

When the pistons move within the cylinders, they create pressure that forces gases past the piston rings and into the crankcase. If this pressure is not relieved, it can lead to oil leaks, reduced engine performance, and potential damage to seals and gaskets. The Crankcase Breather, therefore, plays a significant role in venting these gases while preventing external contaminants from entering the crankcase.

The breather is typically connected to the Positive Crankcase Ventilation (PCV) system, which routes the expelled gases back into the intake manifold. This not only helps in pressure regulation but also ensures that any unburnt hydrocarbons are re-introduced into the combustion process, promoting more efficient fuel usage and reducing emissions ².

Conclusion

In summary, the part 5367679 Crankcase Breather is a vital component in the engine’s ventilation system, working in conjunction with the PCV system to maintain optimal crankcase pressure and promote cleaner, more efficient engine operation.