3917994
Spring Hose Clamp
Cummins®

Introduction

The Spring Hose Clamp 3917994, manufactured by Cummins, is a specialized component designed for use in commercial truck applications. Cummins, a well-established name in the automotive and heavy-duty truck industry, produces this clamp to meet the rigorous demands of truck fluid systems. This part is integral to maintaining the integrity and efficiency of various fluid lines within commercial trucks.

Basic Concepts and Functionality

A spring hose clamp is a type of fastening device used to secure hoses to fittings in fluid systems. It operates by utilizing a metal band with a built-in spring mechanism that provides consistent clamping force. This design ensures a secure and reliable connection, preventing leaks and maintaining system pressure. Spring hose clamps are commonly used in applications where vibration and movement are present, such as in automotive and industrial fluid systems ¹.

Purpose and Role in Truck Operation

The Spring Hose Clamp 3917994 plays a significant role in the operation of commercial trucks by securing hoses in critical fluid systems. It is applied in various systems including coolant, fuel, and hydraulic lines. By providing a tight and consistent seal, this Cummins part helps maintain the efficiency and reliability of these systems. Its role is particularly important in ensuring that fluid transfer occurs without leaks, which can lead to system failures or inefficiencies ².

Key Features

The Spring Hose Clamp 3917994 is characterized by several key features that enhance its performance and durability. It is constructed from high-quality materials, typically stainless steel, which offers excellent resistance to corrosion and wear. The design includes a robust spring mechanism that ensures consistent clamping force over time. Additionally, the clamp features an easy-to-use screw mechanism for adjusting the clamp size, allowing for a precise fit on various hose diameters ³.

Benefits

The Spring Hose Clamp 3917994 offers several advantages that contribute to its effectiveness in commercial truck applications. Its improved sealing efficiency reduces the risk of leaks, ensuring that fluid systems operate at optimal levels. The ease of installation allows for quick and straightforward application, minimizing downtime during maintenance procedures. Furthermore, its resistance to corrosion ensures long-term reliability, even in harsh operating environments. The durable construction of the clamp contributes to its longevity, making it a cost-effective solution for truck maintenance ⁴.

Installation and Usage Guidelines

Proper installation of the Spring Hose Clamp 3917994 is crucial for achieving optimal performance and longevity. To install the clamp, first, ensure that the hose and fitting are clean and free of debris. Position the clamp around the hose and fitting, ensuring it is centered. Use the screw mechanism to tighten the clamp until the desired tension is achieved. It is important to avoid over-tightening, as this can damage the hose. Regularly inspect the clamp for signs of wear or corrosion and replace it if necessary to maintain system integrity ⁵.

Troubleshooting and Maintenance

Common issues with spring hose clamps include leaks due to improper installation or wear and corrosion over time. To troubleshoot these issues, first, check the clamp for proper tension and ensure it is centered on the hose. If leaks persist, inspect the hose and fitting for damage. Regular maintenance practices include periodic inspection of the clamp for signs of wear, corrosion, or damage. Cleaning the clamp and surrounding areas can prevent buildup that may affect performance. Replacing the clamp when signs of wear are detected will help maintain the reliability of the fluid system ⁶.

Safety Considerations

When working with spring hose clamps, it is important to observe several safety guidelines and precautions. Ensure that the system is depressurized before attempting any installation or maintenance procedures. Use appropriate personal protective equipment, such as gloves and safety glasses, to protect against potential injuries. Follow manufacturer guidelines for torque settings when tightening the clamp to avoid over-tightening, which can cause damage. Proper handling and storage of the clamp will also contribute to its longevity and performance ⁷.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. Founded in 1919, Cummins has a long-standing reputation for innovation and quality in the commercial truck industry. The company offers a wide range of products and services designed to meet the needs of customers in various industries, including transportation, construction, and agriculture. Cummins is known for its commitment to customer satisfaction and its focus on developing reliable and efficient power solutions ⁸.

Compatibility with Cummins Engines

The Spring Hose Clamp 3917994 is a versatile component designed to secure hoses firmly in place across various Cummins engine models. This clamp is engineered to provide a reliable seal, ensuring that hose connections remain intact under varying operational conditions. Here is a detailed overview of its compatibility with different Cummins engines:

B5.6 and B6.7 Series Engines

• B5.6 CM2670 B152B
• B6.7 CM2670 B153B

These engines, part of the B series, benefit from the Spring Hose Clamp 3917994 for securing fuel lines, coolant hoses, and other critical connections. The clamp’s design ensures it can withstand the high pressures and temperatures typical in these engines.

F3.8 Series Engines

• F3.8 CM2350 F120B
• F3.8 CM2620 F137B

The F3.8 series engines, including both the CM2350 and CM2620 variants, utilize the Spring Hose Clamp 3917994 for securing various hoses. This clamp is particularly useful in maintaining the integrity of connections in these engines, which are known for their robust performance.

F4.5 Series Engines

• F4.5 CM2620 F139B

The F4.5 engine, with its CM2620 variant, also integrates the Spring Hose Clamp 3917994 to ensure hoses are securely fastened. This is crucial for maintaining the efficiency and safety of the engine’s operations.

ISB Series Engines

• ISB4.5 CM2350 B104
• ISB6.7 G CM2180 B118

The ISB series engines, including the ISB4.5 and ISB6.7 G variants, use the Spring Hose Clamp 3917994 to secure a variety of hoses. This clamp is essential for maintaining the reliability of hose connections in these engines, which are designed for heavy-duty applications.

ISF Series Engines

• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123

The ISF series engines, with their diverse range of variants, also incorporate the Spring Hose Clamp 3917994. This clamp is crucial for securing hoses in these engines, ensuring that connections remain tight and secure under operational stress.

ISV (Nissan) and QSC/QSF Series Engines

• ISV (Nissan)
• QSC8.3 CM850 (CM2850)
• QSF3.8 CM2350 F107

The ISV engine, alongside the QSC and QSF series engines, utilizes the Spring Hose Clamp 3917994 for securing hoses. This clamp is essential for maintaining the integrity of hose connections in these engines, which are designed for a range of applications.

Role in Engine Systems

The Spring Hose Clamp 3917994 is a critical component for ensuring the reliability and efficiency of these Cummins engines. Its design allows it to securely fasten hoses, preventing leaks and ensuring optimal engine performance.

Crankcase Breather System

In the crankcase breather arrangement, the spring hose clamp is utilized to secure the hoses that connect the breather to the atmosphere or to a secondary filtration system. This ensures that pressure within the crankcase is regulated, preventing oil leaks and maintaining optimal engine performance.

Plumbing and Check Valves

When integrated into the crankcase breather plumbing, the clamp holds hoses in place that are connected to check valves. These valves allow air to escape from the crankcase while preventing the ingress of contaminants, thus safeguarding the engine’s internal components.

Lubricating Oil Drain Tube

The clamp is also employed in the lubricating oil drain tube system. Here, it ensures a tight seal around the hoses that transport drained oil from the engine to the collection tank. This prevents oil spills and maintains a clean engine compartment.

Cabin Heater Plumbing

In the cabin heater plumbing, the spring hose clamp secures connections that circulate hot coolant from the engine to the heater core. This reliable connection ensures consistent cabin heating, enhancing passenger comfort.

Exhaust Recirculation Water System

For engines equipped with an exhaust recirculation water system, the clamp is used to maintain the integrity of hoses that recirculate water to reduce emissions. This helps in achieving better emission control and compliance with environmental regulations.

Corrosion Resistor Application

In systems where corrosion resistors are employed, the clamp ensures that hoses remain firmly attached, preventing leaks and ensuring the resistor functions effectively to protect metal components from corrosive elements.

By securing these vital connections, the Spring Hose Clamp 3917994 plays a significant role in the reliable operation of engine systems, contributing to overall engine efficiency and longevity.

Conclusion

The Spring Hose Clamp 3917994 by Cummins is a vital component in the maintenance and operation of commercial truck fluid systems. Its robust design, ease of installation, and resistance to corrosion make it an essential part for ensuring the reliability and efficiency of various engine systems. Proper installation, regular maintenance, and adherence to safety guidelines are crucial for maximizing the performance and longevity of this part.