3412920
Shutoff Valve Shaft
Cummins®

The 3412920 Shutoff Valve Shaft, manufactured by Cummins, is a component integral to the operation of commercial trucks. Cummins, a well-established name in the automotive industry, is known for its high-quality engine components. This part is designed to ensure efficient and reliable operation of truck engines by managing fuel flow.

Basic Concepts of Shutoff Valve Shafts

A Shutoff Valve Shaft is a mechanical component used in engine systems to control the flow of fuel. It operates by opening and closing a valve within the fuel system, thereby regulating the amount of fuel that reaches the engine. This control is vital for maintaining engine performance and efficiency. The shaft itself is typically actuated by a linkage connected to the engine’s control system, allowing for precise adjustments to fuel flow based on engine demand and operating conditions ¹.

Role of the 3412920 Shutoff Valve Shaft in Truck Operation

The 3412920 Shutoff Valve Shaft plays a specific role in the operation of a truck by ensuring that the engine receives the correct amount of fuel under varying conditions. It interacts with other engine components such as the fuel pump and injectors to maintain optimal fuel delivery. This precise control over fuel flow contributes to the engine’s overall performance, including its power output, fuel efficiency, and emissions levels ².

Key Features of the 3412920 Shutoff Valve Shaft

The 3412920 Shutoff Valve Shaft is characterized by several design and construction features that enhance its functionality and durability. These include a robust material composition that resists wear and corrosion, precision engineering that ensures accurate fuel control, and unique design elements that facilitate easy installation and maintenance. The shaft’s construction is tailored to withstand the demanding conditions of heavy-duty truck operation, ensuring long-term reliability ³.

Benefits of Using the 3412920 Shutoff Valve Shaft

Utilizing the 3412920 Shutoff Valve Shaft offers several advantages. It contributes to improved engine efficiency by ensuring precise fuel delivery, which can lead to better fuel economy and reduced emissions. The shaft’s reliable operation under heavy-duty conditions enhances the durability and performance of the truck’s engine. Additionally, its design facilitates easier maintenance and longer service intervals, reducing overall operational costs.

Installation and Integration

Proper installation of the 3412920 Shutoff Valve Shaft into a truck’s engine system is crucial for its effective operation. This process involves ensuring that the shaft is correctly aligned with other engine components and that all connections are secure. It may also require adjustments to the engine’s control system to ensure that the shaft operates within the desired parameters. Careful attention to these details during installation helps to maximize the shaft’s performance and longevity.

Maintenance and Troubleshooting

Routine maintenance practices are important for ensuring the longevity and optimal performance of the 3412920 Shutoff Valve Shaft. This includes regular inspections for signs of wear or damage, cleaning the shaft and its components to prevent buildup, and lubricating moving parts as necessary. Troubleshooting common issues, such as irregular fuel flow or engine performance problems, may involve checking the shaft’s alignment, inspecting the linkage for damage, and ensuring that the engine’s control system is functioning correctly.

Cummins: Manufacturer Overview

Cummins is a renowned manufacturer in the automotive industry, with a history of producing high-quality engine components. The company’s reputation is built on a commitment to innovation, quality, and customer satisfaction. Cummins’ products, including the 3412920 Shutoff Valve Shaft, are designed with precision engineering and durable materials to meet the demanding requirements of commercial truck operation. Their dedication to excellence ensures that their components contribute to the reliable and efficient performance of engines across various applications.

Compatibility of 3412920 Shutoff Valve Shaft with Cummins Engines

The 3412920 Shutoff Valve Shaft is compatible with several Cummins engine models, ensuring proper shutoff and control of fuel delivery. Below is a detailed description of its compatibility across various Cummins engine models:

ISX Series Engines

• ISX CM570
• ISX CM870
• ISX CM871
• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

QSX Series Engines

• QSX11.9 CM2250 ECF
• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

QSZ Series Engines

• QSZ13 CM2150 Z101
• QSZ13 CM2150 Z102

X15 Series Engines

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

Z13 Series Engines

• Z13 Z108G

This detailed compatibility overview highlights the Shutoff Valve Shaft’s versatility and importance across various Cummins engine models. Its precise engineering ensures that it fits seamlessly within each engine type, contributing to their overall performance and reliability.

Role of 3412920 Shutoff Valve Shaft in Engine Systems

The 3412920 Shutoff Valve Shaft is an integral component within various engine systems, facilitating the precise control of fluid flow. Its role is particularly significant in systems involving the management of water and other fluids, ensuring optimal performance and protection of engine components.

In systems equipped with a Corrosion Resistor, the Shutoff Valve Shaft works in tandem to regulate the flow of coolant or other protective fluids. This regulation is essential for maintaining the integrity of the corrosion resistor, preventing undue stress or damage from inconsistent fluid flow.

Similarly, when integrated with a Corrosion Resistor Head, the Shutoff Valve Shaft ensures that the head receives a consistent supply of protective fluid. This consistency is vital for the head’s effectiveness in resisting corrosion, thereby prolonging the lifespan of the engine system.

At the Water Inlet Connection, the Shutoff Valve Shaft controls the entry of water into the engine system. This control is fundamental for preventing water hammer and ensuring that the water enters the system at a rate that does not cause damage to the inlet connection or other components.

In conjunction with the Water Pump, the Shutoff Valve Shaft plays a role in modulating the flow of water through the engine. This modulation helps in maintaining the desired pressure and flow rate, which are critical for the efficient operation of the water pump and the overall cooling system.

Lastly, in systems with a Water Transfer Connection, the Shutoff Valve Shaft ensures that the transfer of water between different parts of the engine system is smooth and controlled. This controlled transfer is essential for the efficient distribution of coolant and other fluids, contributing to the stable operation of the engine.

Overall, the 3412920 Shutoff Valve Shaft is a key component in ensuring the reliable and efficient operation of engine systems by precisely controlling fluid flow in various critical components.

Conclusion

The 3412920 Shutoff Valve Shaft is a critical component in the operation of commercial trucks, particularly those equipped with Cummins engines. Its role in managing fuel flow ensures optimal engine performance, efficiency, and reliability. The shaft’s design and construction features, including robust material composition and precision engineering, contribute to its durability and functionality under heavy-duty conditions. Proper installation, routine maintenance, and troubleshooting are essential for maximizing the performance and longevity of this Cummins part. Cummins’ commitment to innovation and quality ensures that the 3412920 Shutoff Valve Shaft meets the demanding requirements of commercial truck operation, contributing to the reliable and efficient performance of engines across various applications.