3917394
Water Transfer Connection
Cummins®

Introduction

The Cummins 3917394 Water Transfer Connection is a component designed for use in commercial trucks. Its purpose is to facilitate the transfer of coolant between the engine and the radiator, playing a role in maintaining the engine’s operating temperature within optimal ranges. This component is integral to the truck’s cooling system, ensuring that the engine remains cool under various operating conditions ¹.

Basic Concepts of Water Transfer Connection

Water transfer connections in commercial trucks serve the fundamental purpose of enabling coolant flow between the engine and the radiator. This flow is vital for dissipating heat generated by the engine, which if not managed properly, could lead to overheating and potential engine damage. Maintaining proper coolant flow is therefore important for the efficient operation of the cooling system and the overall performance and longevity of the engine ².

Role and Function of the 3917394 Water Transfer Connection

The 3917394 Water Transfer Connection operates by providing a conduit for coolant to travel from the engine to the radiator and back. This process involves the coolant absorbing heat from the engine as it circulates through the engine block and cylinder head. The heated coolant then flows to the radiator, where it releases heat into the air, cooling down before returning to the engine to repeat the cycle. This continuous circulation helps to regulate the engine’s temperature, ensuring it operates within safe limits ³.

Key Features

The 3917394 Water Transfer Connection is characterized by several key features that enhance its functionality and reliability. These include a durable construction that resists corrosion and wear, ensuring longevity in demanding environments. Its precise engineering ensures a secure fit and efficient coolant flow. Additionally, it is designed for compatibility with Cummins engines, ensuring seamless integration and optimal performance.

Benefits

The use of the 3917394 Water Transfer Connection offers several benefits. It contributes to improved coolant flow, which enhances the efficiency of the engine cooling system. This results in more effective heat management, reducing the risk of engine overheating. Furthermore, its reliable performance under demanding conditions ensures that commercial trucks can operate efficiently and consistently, even in challenging environments.

Troubleshooting and Maintenance

Common issues with the 3917394 Water Transfer Connection may include leaks, blockages, or corrosion. Regular inspection and maintenance are recommended to identify and address these issues promptly. This includes checking for signs of wear or damage, ensuring connections are secure, and replacing the component if necessary to maintain optimal performance and prevent potential engine damage.

Compatibility with Cummins Engines

The Water Transfer Connection part 3917394 is designed to fit a variety of Cummins engines. This part is crucial for the proper functioning of the engine’s cooling system, ensuring efficient heat transfer and maintaining optimal operating temperatures.

ISC and ISC8.3 Series Engines

The part 3917394 is compatible with several models within the ISC and ISC8.3 series, including:

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

ISL Series Engines

The ISL series engines also benefit from the 3917394 water transfer connection, with compatibility extending to:

• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250

QSL Series Engines

The QSL series engines are also compatible with the part 3917394, including:

• QSL8.9 CM2150 L141
• QSL9 CM554
• QSL9 CM850(CM2850)

C and QSC Series Engines

The part 3917394 also fits into the C and QSC series engines, which include:

• C GAS PLUS CM556
• C8.3 G
• ISBE CM800
• L GAS PLUS CM556
• QSC8.3 CM554
• QSC8.3 CM850(CM2850)

Other Compatible Engines

Additionally, the part 3917394 is compatible with the following engines:

• 6C8.3
• ISC8.3 CM2250

Role of Part 3917394 Water Transfer Connection in Engine Systems

The Part 3917394 Water Transfer Connection is integral to the efficient operation of various engine systems by facilitating the seamless transfer of water between components. This part ensures optimal performance and cooling across several critical areas.

Aftercooler Plumbing

In the aftercooler plumbing system, the Water Transfer Connection plays a significant role in regulating the flow of water to the aftercooler. This helps in cooling the compressed air from the turbocharger, enhancing engine efficiency and reducing the risk of overheating.

Block Vent Plumbing

For the block vent plumbing, the Water Transfer Connection ensures that any excess water or coolant is properly vented from the engine block. This prevents the buildup of pressure and potential damage to the engine components.

Breather and Crankcase Plumbing

In the breather and crankcase plumbing systems, the Water Transfer Connection aids in maintaining the correct level of lubrication and cooling. It helps in circulating water to remove heat generated within the crankcase, thus prolonging the life of the engine components.

Aftercooler Water Plumbing

The aftercooler water plumbing benefits from the Water Transfer Connection by ensuring a consistent and reliable flow of water to the aftercooler. This is essential for maintaining the desired temperature of the air entering the engine, which directly impacts combustion efficiency.

Cabin Heater Plumbing

For the cabin heater plumbing, the Water Transfer Connection is responsible for transferring hot water from the engine to the cabin heater core. This ensures that the cabin remains warm during cold weather, enhancing passenger comfort.

Exhaust Recirculation Water Plumbing

In the exhaust recirculation water plumbing system, the Water Transfer Connection helps in cooling the recirculated exhaust gases before they are reintroduced into the combustion chamber. This process reduces emissions and improves engine performance.

Oil Cooler Water Plumbing

The oil cooler water plumbing system relies on the Water Transfer Connection to circulate cooling water through the oil cooler. This helps in maintaining the oil at an optimal temperature, ensuring it retains its lubricating properties and protecting the engine from wear.

Aftercooler WTR (Water) and Turbocharger Location

At the turbocharger location, the Water Transfer Connection ensures that the aftercooler receives a steady supply of cooling water. This is vital for the turbocharger’s performance, as it operates under high temperatures and pressures. Efficient cooling prolongs the turbocharger’s lifespan and maintains its efficiency.

Conclusion

Overall, the Part 3917394 Water Transfer Connection is a key component in maintaining the thermal management and efficiency of various engine systems, ensuring they operate within their optimal parameters. Regular maintenance and timely replacement of this part are essential for the continued reliable operation of commercial trucks.