3945819
Hose Clamp
Cummins®

Introduction

The Cummins 3945819 Hose Clamp is a component designed to secure hoses in various fluid systems within commercial trucks. It plays a role in maintaining the integrity and efficiency of these systems, ensuring that fluids are transported securely without leaks or disruptions.

Basic Concepts of Hose Clamps

Hose clamps are devices used to create a secure connection between a hose and a fitting. They operate by compressing the hose against the fitting, creating a seal that prevents fluid leakage. Hose clamps are vital in fluid systems, including fuel, coolant, and hydraulic systems, where secure connections are necessary to maintain system performance and safety ¹.

Purpose of the Cummins 3945819 Hose Clamp

The Cummins 3945819 Hose Clamp is specifically designed to secure hoses within commercial truck systems. It is commonly used in fuel, coolant, and hydraulic systems, where it ensures that hoses remain firmly attached to their fittings, preventing leaks and maintaining system efficiency.

Key Features

The Cummins 3945819 Hose Clamp is constructed with durability and performance in mind. It features a robust band made from high-quality materials, ensuring resistance to corrosion and wear. The clamp utilizes a screw mechanism for easy adjustment, allowing for precise control over the clamping force. Its design includes features that enhance its performance, such as a wide band for better distribution of clamping force and a durable screw that resists loosening over time.

Benefits

Using the Cummins 3945819 Hose Clamp offers several advantages. It provides improved seal integrity, ensuring that connections remain leak-free under various operating conditions. The clamp’s design allows for ease of installation and removal, facilitating maintenance procedures. It is resistant to vibration, which is common in the dynamic environment of a commercial truck, and offers long-term reliability, reducing the need for frequent replacements.

Installation Guidelines

To install the Cummins 3945819 Hose Clamp, first, ensure the hose and fitting are clean and free of debris. Position the clamp around the hose and fitting, ensuring it is aligned correctly. Use the screw mechanism to tighten the clamp gradually, applying even pressure until the desired clamping force is achieved. Check for leaks after installation to confirm a secure connection.

Troubleshooting Common Issues

Common issues with hose clamps include leaks and clamp failure. To address leaks, inspect the clamp for proper alignment and tightening. If the clamp appears loose, tighten it further. For clamp failure, examine the clamp for signs of wear or corrosion. Replace the clamp if necessary, ensuring the new clamp is compatible with the system.

Maintenance Tips

Regular maintenance of hose clamps involves periodic inspection for signs of wear, corrosion, or loosening. Check clamps during routine system inspections and replace them if they show signs of degradation. Keeping clamps clean and free of debris can also extend their lifespan and ensure reliable performance.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins serves commercial truck, bus, construction, agricultural, and industrial markets. The company is renowned for its commitment to reliability, performance, and customer satisfaction in the commercial truck industry ².

Cummins Engine Compatibility with Hose Clamp Part 3945819

The Cummins Hose Clamp part number 3945819 is designed to fit a variety of Cummins engines, ensuring a secure and reliable connection for various fluid lines and hoses. Below is a detailed breakdown of the engines with which this hose clamp is compatible:

Cummins 4B Series Engines

• 4B3.9: This engine is part of the 4B series and is compatible with the 3945819 hose clamp for maintaining fluid line integrity.

Cummins 6B Series Engines

• 6B5.9: The 6B5.9 engine is another member of the 6B series that utilizes the 3945819 hose clamp to secure its fluid lines.

Cummins B Series Engines

• B4.5: The B4.5 engine is compatible with the 3945819 hose clamp, ensuring secure connections for its fluid lines.
• B6.7: Similarly, the B6.7 engine uses the 3945819 hose clamp for its fluid lines.

Cummins ISB Series Engines

• ISB CM550: The ISB CM550 engine is designed to work with the 3945819 hose clamp, providing a reliable seal for its fluid lines.
• ISB CM850: The ISB CM850 engine also fits the 3945819 hose clamp, ensuring secure and leak-free connections.
• ISBE4 CM850: The ISBE4 CM850 engine is another variant that is compatible with the 3945819 hose clamp.

Cummins QSB Series Engines

• QSB3.9 30 CM550: This engine is compatible with the 3945819 hose clamp for maintaining the integrity of its fluid lines.
• QSB4.5 CM850 (CM2850): The QSB4.5 CM850 engine, also known as CM2850, uses the 3945819 hose clamp.
• QSB5.9 30 CM550: The QSB5.9 30 CM550 engine is compatible with the 3945819 hose clamp.
• QSB5.9 44 CM550: The QSB5.9 44 CM550 engine also fits the 3945819 hose clamp.
• QSB5.9 CM850: The QSB5.9 CM850 engine is another variant that is compatible with the 3945819 hose clamp.
• QSB6.7 CM850 (CM2850): The QSB6.7 CM850 engine, also known as CM2850, uses the 3945819 hose clamp.

By ensuring compatibility with these various engines, the Cummins Hose Clamp part number 3945819 provides a versatile solution for maintaining secure fluid line connections across multiple engine models.

Role of Part 3945819 Hose Clamp in Engine Systems

The Hose Clamp, identified by part number 3945819, is a component in securing and maintaining the integrity of various hose connections within engine systems. Its application spans across multiple subsystems, ensuring efficient operation and reliability.

Auxiliary Cooling Plumbing

In the auxiliary cooling system, the Hose Clamp is utilized to secure hoses that connect the radiator to the engine block or other cooling components. This ensures a tight seal, preventing coolant leaks and maintaining optimal cooling efficiency. The clamp’s role is to withstand the pressure and temperature variations within the cooling system, ensuring consistent performance.

Crankcase Breather

For the crankcase breather system, the Hose Clamp secures the hose that vents crankcase gases to the intake tract or another suitable location. This connection is vital for maintaining proper pressure within the crankcase, which in turn ensures smooth engine operation and reduces the risk of oil contamination.

Engine Coolant Vent

The Hose Clamp is also employed in the engine coolant vent system to secure the hose that allows excess pressure to escape from the cooling system. This prevents system overpressure, which could lead to coolant loss or damage to cooling system components.

Fuel Drain Tube

In fuel systems, the Hose Clamp is used to secure the fuel drain tube, which is essential for maintenance and safety. It ensures that the tube remains firmly attached during fuel system draining procedures, preventing fuel spills and ensuring safe handling.

Fuel Filter Plumbing

For fuel filter plumbing, the Hose Clamp secures the hoses that connect the fuel filter to the fuel lines. This ensures a leak-free connection, maintaining fuel system integrity and preventing fuel leaks, which are hazardous and can affect engine performance.

Fuel Plumbing

In general fuel plumbing, the Hose Clamp is used to secure various fuel lines throughout the engine system. This includes connections to the fuel tank, fuel pump, and injectors. Secure connections are essential for maintaining fuel pressure and preventing leaks, which are critical for engine efficiency and safety.

Fuel Supply Tube

The Hose Clamp plays a role in securing the fuel supply tube, which delivers fuel from the tank to the engine. A secure connection ensures consistent fuel delivery, which is essential for engine performance and reliability.

Thermostat Housing

Finally, the Hose Clamp is used in the thermostat housing to secure the hoses that connect to the engine coolant system. This ensures that the thermostat can regulate engine temperature effectively by maintaining a secure and leak-free connection.

Conclusion

The Cummins 3945819 Hose Clamp is a critical component in maintaining the integrity and efficiency of fluid systems in commercial trucks. Its robust design, ease of installation, and resistance to vibration make it a reliable choice for securing hoses in various engine subsystems. Regular maintenance and proper installation are essential to ensure the clamp’s effectiveness and longevity.