3973018
Molded Hose
Cummins®

The 3973018 Molded Hose, a component manufactured by Cummins, is designed for use in commercial trucks. This article provides an overview of this part, its function, key features, benefits, and maintenance suggestions.

Basic Concepts of Molded Hoses

Molded hoses are specialized hoses created through a molding process, which involves shaping rubber or other materials around a mandrel to form a precise fit for specific applications. These hoses are commonly used in automotive and industrial applications due to their durability and resistance to various environmental factors ¹.

Function of the 3973018 Molded Hose

This Cummins part plays a role in the fluid transfer systems of commercial trucks. It is designed to transport liquids such as coolant, fuel, or hydraulic fluid between components. The hose ensures a secure and leak-free connection, contributing to the efficient operation of the truck’s systems.

Key Features

• Constructed from high-quality materials to ensure durability and longevity.
• Designed to withstand high pressure and temperature variations commonly encountered in commercial truck operations.
• Features reinforced ends to prevent leaks and ensure a tight fit with connected components.
• Manufactured using precision molding techniques to ensure accurate dimensions and reliable performance.

Benefits

• Enhanced reliability in fluid transfer systems due to its robust construction.
• Reduced risk of leaks, which can lead to system failures or contamination.
• Improved resistance to abrasion, chemicals, and environmental factors, prolonging the service life of the hose.
• Easy to install and replace, minimizing downtime for maintenance procedures.

Troubleshooting and Maintenance

Regular inspection of the Molded Hose is recommended to identify any signs of wear, cracking, or leaks. Maintenance procedures may include:

• Checking for proper connection and fit at both ends of the hose.
• Inspecting the hose for any visible damage or deterioration.
• Ensuring that the hose is free from kinks or sharp bends that could impede fluid flow.
• Replacing the hose if any significant wear or damage is detected to prevent potential system failures.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and aftermarket parts. The company is known for its commitment to quality, innovation, and customer satisfaction, providing reliable products and services to various industries worldwide.

Cummins Molded Hose Part 3973018 in Engine Applications

The Cummins molded hose part number 3973018 is a component in the engine systems of various Cummins engines, ensuring efficient fluid transfer and maintaining system integrity. This hose is designed to withstand the demanding conditions of engine environments, providing durability and reliability.

QSB5.9 CM850 Engines

In the QSB5.9 CM850 engines, the molded hose part 3973018 is integral to the engine’s cooling system. It connects various fluid pathways, ensuring that coolant flows smoothly through the engine, helping to maintain optimal operating temperatures. This hose is engineered to endure high temperatures and pressures, ensuring longevity and performance in heavy-duty applications.

Group Applications

The molded hose part 3973018 is also utilized in other Cummins engine groups where similar fluid transfer requirements exist. Its design and material composition make it suitable for use in both cooling and lubrication systems, providing a versatile solution across different engine models. The hose’s flexibility and resistance to various fluids and temperatures make it a reliable choice for these critical applications.

Role of Part 3973018 Molded Hose in Engine Systems

The 3973018 Molded Hose is a component in various engine systems, facilitating the efficient transfer of fluids between different parts. Its application in cooler and marine gear oil systems highlights its versatility and importance.

Cooler Systems

In cooler systems, this part plays a role in maintaining optimal operating temperatures. It connects the engine to the cooler, allowing coolant to circulate and dissipate excess heat. This ensures that the engine operates within safe temperature ranges, preventing overheating and potential damage. The hose’s durable construction and precise fit are vital for maintaining a leak-free connection, which is essential for the system’s efficiency.

Marine Gear Oil Systems

In marine gear oil systems, the 3973018 Molded Hose is used to transport gear oil between the gearbox and the oil reservoir. This ensures that the gearbox is consistently lubricated, reducing friction and wear on moving parts. The hose’s resistance to marine environments, including exposure to saltwater and varying temperatures, makes it ideal for this application. Its reliable performance helps in prolonging the lifespan of the gearbox and ensuring smooth operation of the marine vessel.

Conclusion

The 3973018 Molded Hose is a vital component in the fluid transfer systems of commercial trucks and various Cummins engines. Its robust construction, resistance to environmental factors, and ease of maintenance make it a reliable choice for ensuring efficient operation and longevity of the systems it serves.