3973047
Throttle Lever Spring
Cummins®

The Throttle Lever Spring 3973047, manufactured by Cummins, is a component integral to the operation of commercial trucks. Cummins, a well-established name in the engine manufacturing industry, ensures that this spring meets the rigorous demands of heavy-duty applications. The spring’s role in the throttle system is significant, contributing to the efficient and reliable performance of the truck’s engine ¹.

Function and Operation

The Throttle Lever Spring 3973047 operates within the engine system by interacting with the throttle lever and accelerator pedal. When the accelerator pedal is pressed, the spring assists in moving the throttle lever to the desired position, which in turn adjusts the airflow into the engine. This interaction is crucial for modulating engine speed and power output. The spring’s design allows it to return the throttle lever to its default position when the pedal is released, ensuring that the engine returns to idle smoothly ².

Purpose of the Throttle Lever Spring

The Throttle Lever Spring plays a role in maintaining the desired throttle position, which is vital for smooth acceleration and deceleration. By ensuring that the throttle lever returns to its neutral position accurately, the spring contributes to the overall performance and efficiency of the truck’s engine. This precise control over the throttle position enhances driver control and ensures consistent engine operation ³.

Key Features

The Throttle Lever Spring 3973047 is characterized by its durable design and high-quality materials. It is engineered to withstand the harsh conditions typical of commercial truck environments, offering resistance to wear and fatigue. The precision engineering of this spring ensures that it operates reliably under varying load conditions, providing consistent performance over time.

Benefits

The advantages of the Throttle Lever Spring include improved throttle response, which allows for more precise control over the engine’s power output. This enhanced driver control leads to a better overall driving experience and safety. Additionally, the spring’s efficient operation contributes to increased fuel efficiency, making it a valuable component for fleet operators looking to optimize their vehicle’s performance.

Installation and Compatibility

Proper installation of the Throttle Lever Spring is important for ensuring optimal performance. It is recommended to follow the manufacturer’s guidelines during installation to avoid any issues. Using genuine Cummins parts is advised to maintain compatibility and ensure the spring functions as intended within the engine system.

Troubleshooting and Maintenance

Common issues with the Throttle Lever Spring may include wear or fatigue, leading to inconsistent throttle operation. Regular inspection and maintenance can help identify these issues early. If the spring shows signs of wear, it should be replaced to prevent further complications. Maintenance tips include keeping the spring clean and free from debris, which can affect its operation.

Safety Considerations

Regular inspection and maintenance of the Throttle Lever Spring are important to prevent malfunctions that could affect engine performance and driver safety. Ensuring that the spring is in good condition helps maintain the reliability of the throttle system, contributing to the safe operation of the vehicle.

Cummins Corporation

Cummins Inc. is a leader in the engine manufacturing industry, known for its commitment to quality and innovation. With a broad product range that includes engines, filtration, emissions, and power generation technologies, Cummins serves various industries, including commercial trucking. The company’s reputation for producing reliable and high-performance engine components is well-established, making it a preferred choice for fleet operators and manufacturers alike.

Cummins Throttle Lever Spring (Part 3973047) Compatibility

The Cummins Throttle Lever Spring, identified by part number 3973047, is a critical component in the engine’s throttle control system. This spring is designed to ensure the throttle lever returns to its idle position when the accelerator pedal is released. Its compatibility extends across several Cummins engine models, ensuring a consistent performance across different engine types.

B4.5 Engine Series

The Throttle Lever Spring (3973047) is specifically engineered to fit seamlessly within the B4.5 engine series. This series includes various models that share similar design principles and operational requirements, making the spring a versatile component across these engines.

Grouping by Engine Models

• B4.5 Engines: The spring is designed to integrate with the throttle mechanism of B4.5 engines, ensuring smooth and reliable operation.
• Other Cummins Engines: While the primary focus is on the B4.5 series, the spring may also be compatible with other Cummins engines that utilize similar throttle lever designs.

The design of the Throttle Lever Spring ensures it meets the stringent requirements of Cummins engines, providing durability and consistent performance. This compatibility is crucial for maintaining the engine’s operational efficiency and reliability.

Role of Part 3973047 Throttle Lever Spring in Engine Systems

The Throttle Lever Spring (part 3973047) is integral to the operation of several engine components, ensuring smooth and efficient performance. When integrated with the Fuel Injection Pump, this spring assists in maintaining the precise control of fuel delivery by stabilizing the throttle lever. This stability is essential for consistent fuel metering, which directly impacts engine performance and fuel efficiency.

In conjunction with the Fuel Pump, the Throttle Lever Spring helps in regulating the fuel supply to the engine. By providing a consistent return force to the throttle lever, it ensures that the fuel pump operates within its optimal range, preventing over- or under-fueling scenarios that could lead to engine inefficiencies or damage.

When paired with the Pump components, such as the Fuel Injection System, the spring’s role becomes even more significant. It ensures that the throttle lever returns to its default position after actuation, which is vital for the sequential operation of fuel injection. This return action helps in maintaining the correct timing and pressure of fuel delivery, which is paramount for the engine’s combustion process.

Overall, the Throttle Lever Spring (part 3973047) plays a supportive yet essential role in the coordination and efficiency of fuel-related engine components, contributing to the overall performance and reliability of the engine system.

Conclusion

The Throttle Lever Spring 3973047 is a vital component in the throttle control system of Cummins engines, particularly within the B4.5 engine series. Its role in maintaining throttle position, ensuring smooth engine operation, and contributing to fuel efficiency underscores its importance in the overall performance and reliability of commercial trucks. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part.