4327728
Flexible Hose
Cummins®

The Breather Bracket 4327728 is a component manufactured by Cummins, designed specifically for use in heavy-duty trucks. Its primary role is to facilitate the proper ventilation of the engine’s crankcase, ensuring that pressure equilibrium is maintained and contaminants are minimized. Cummins, a well-established manufacturer in the commercial truck industry, produces this part as part of its extensive range of high-quality engine components ¹.

Function and Operation

The Breather Bracket 4327728 operates by allowing air to enter and exit the engine’s crankcase as needed. This process helps to maintain a stable pressure environment within the crankcase, which is crucial for the efficient operation of the engine. By regulating pressure, the breather bracket also plays a role in preventing the buildup of contaminants such as moisture and sludge, which can adversely affect engine performance and longevity ².

Key Features

This Cummins part is constructed from durable materials that are resistant to the harsh conditions found within a heavy-duty truck engine. Its design includes features such as a robust mounting bracket and precise filtration elements that enhance its performance. These attributes ensure that the breather bracket can withstand the rigors of daily use while effectively performing its intended function ³.

Benefits

Incorporating the Breather Bracket 4327728 into a truck’s engine system can lead to several advantages. These include improved engine performance due to optimal crankcase pressure, extended lifespan of engine components by reducing contamination, and enhanced system reliability through consistent pressure regulation ⁴.

Installation Process

To install the Breather Bracket 4327728, begin by ensuring the engine is cool and the vehicle is parked on a level surface. Gather the necessary tools, which may include a socket wrench and sealant. Follow the manufacturer’s instructions for removing the old breather bracket, if applicable. Clean the mounting area thoroughly before positioning the new breather bracket. Secure it in place using the provided hardware, ensuring all connections are tight and sealed properly ⁵.

Maintenance and Troubleshooting

Regular maintenance of the Breather Bracket 4327728 is recommended to ensure it continues to function optimally. This includes periodic inspection for signs of wear or damage and cleaning or replacing the filtration elements as needed. Common issues may include blockages or leaks, which can often be resolved by cleaning the breather bracket or tightening connections ⁶.

Compatibility and Applications

The Breather Bracket 4327728 is designed for use in specific models and series of heavy-duty trucks. Compatibility information, including engine types and truck models, should be consulted to ensure proper fit and function ⁷.

Safety Considerations

When installing, maintaining, or troubleshooting the Breather Bracket 4327728, it is important to observe several safety guidelines. These include wearing appropriate personal protective equipment, ensuring the engine is cool before beginning work, and following all manufacturer instructions to prevent injury or damage to the component ⁸.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for quality and innovation in the commercial truck industry. The company’s product range includes a variety of engine components and systems designed to meet the demanding requirements of heavy-duty applications ⁹.

Compatibility

The Breather Bracket 4327728 is designed to fit a range of Cummins engines, ensuring proper ventilation and pressure management within the engine’s crankcase. This part is crucial for maintaining engine health and performance by allowing the escape of gases and preventing the buildup of pressure.

K-Series Engines

The Breather Bracket 4327728 is compatible with the following K-Series engines:

• K38
• K50

These engines benefit from the bracket’s role in managing crankcase pressure, ensuring that the engine operates smoothly and efficiently.

QSK Engines

The bracket is also suitable for the following QSK engines:

• QSK50 CM2150
• QSK50 CM2150 MCRS
• QSK60 CM850 MCRS

For these engines, the Breather Bracket 4327728 provides a reliable solution for crankcase ventilation, which is essential for maintaining optimal engine performance and longevity.

K107 Engine

The Cummins Breather Bracket 4327728 is also compatible with the K107 engine, ensuring that it meets the specific ventilation requirements of this model.

By ensuring that the Breather Bracket 4327728 is correctly installed, engine operators can maintain the integrity of their engines and avoid potential issues related to crankcase pressure and ventilation.

Role of Part 4327728 Breather Bracket in Engine Systems

This part is an integral component in the arrangement of various engine systems, ensuring efficient operation and maintenance of engine health.

In the context of the engine lubrication system, the Breather Bracket works in conjunction with the engine lubrication primer and the lub oil prim pum (lubrication oil priming pump). It facilitates the venting of air from the lubrication system during priming, allowing the primer to effectively purge air and fill the system with oil. This ensures that the lubrication system is ready for operation, reducing the risk of air locks that could impede oil flow to critical engine components.

When considering the plumbing of the engine, the Breather Bracket plays a role in maintaining the integrity of the oil passages. It allows for the safe release of pressure build-up within the lubrication system, preventing potential leaks or damage to the plumbing. This is particularly important during the initial start-up phase when the engine oil primer is active.

Furthermore, the Breather Bracket is essential in the operation of the engine lubricating system. It ensures that the system can breathe, meaning it can equalize pressure and allow for the smooth circulation of oil. This is vital for the consistent lubrication of moving parts, which is necessary for the longevity and performance of the engine.

In summary, the 4327728 Breather Bracket is a key component that supports the efficient functioning of the engine lubrication primer, the lubrication oil priming pump, and the overall plumbing and lubricating systems of the engine. Its role in venting and pressure equalization is fundamental to the maintenance of a healthy lubrication system.

Conclusion

The Breather Bracket 4327728 is a critical component for maintaining the health and efficiency of heavy-duty truck engines. By ensuring proper ventilation and pressure management within the crankcase, it contributes to optimal engine performance, extended component lifespan, and enhanced system reliability. Proper installation, regular maintenance, and adherence to safety guidelines are essential for maximizing the benefits of this Cummins part.