3931900
Throttle Lever Pivot Pin
Cummins®

The Cummins Throttle Lever Pivot Pin, part number 3931900, is a component designed to facilitate the operation of the throttle control system in heavy-duty trucks. This pin plays a role in enabling the precise movement of the throttle lever, which is integral to the regulation of engine performance. Its design and function are tailored to meet the demanding requirements of heavy-duty applications, ensuring reliable and efficient operation.

Basic Concepts

Understanding the Throttle Lever Pivot Pin requires familiarity with its function within the throttle control system. This pin serves as a pivotal point around which the throttle lever rotates. It interacts with other components such as the throttle linkage and the accelerator pedal, transmitting the driver’s input to the engine’s fuel system. This interaction is crucial for modulating the engine’s power output in response to driver commands ¹.

Purpose and Function

The Throttle Lever Pivot Pin plays a role in the operation of a truck by facilitating the movement of the throttle lever. When the driver presses the accelerator pedal, the pin allows the throttle lever to pivot, which in turn adjusts the position of the throttle plate within the engine’s intake system. This adjustment controls the amount of air entering the engine, directly influencing fuel delivery and combustion. The pin’s smooth operation ensures that throttle responses are precise and consistent, contributing to overall engine performance ².

Key Features

The Throttle Lever Pivot Pin is characterized by several key features that enhance its performance and durability. Its design incorporates a robust construction that can withstand the high stresses and vibrations typical of heavy-duty truck operations. The pin is typically made from high-quality materials, such as hardened steel, to ensure longevity and resistance to wear. Additionally, precision machining ensures that the pin fits securely within its housing, minimizing play and ensuring accurate throttle control.

Benefits

Using the Throttle Lever Pivot Pin offers several benefits. Improved throttle response is one of the primary advantages, as the pin’s design allows for smooth and precise movement of the throttle lever. This results in better control over engine performance, which is particularly important in heavy-duty applications where load variations are common. Enhanced durability and reliability are also significant benefits, as the pin’s material composition and design are tailored to withstand the rigors of heavy-duty use, reducing the likelihood of failure and the need for frequent replacements.

Installation and Maintenance

Proper installation of the Throttle Lever Pivot Pin is important to ensure optimal performance. Installation typically requires basic hand tools and may involve aligning the pin with its housing and securing it in place. Regular maintenance, such as inspecting for wear and ensuring that the pin moves freely without excessive play, is important to prolong its service life. Lubrication, if specified by the manufacturer, can also help maintain smooth operation.

Troubleshooting

Common issues with the Throttle Lever Pivot Pin may include wear, which can lead to increased play and less precise throttle control. If such issues are suspected, inspecting the pin for signs of wear or damage is a first step. Replacing the pin if necessary, or adjusting the throttle linkage to compensate for wear, can resolve these problems. Ensuring that the pin is properly lubricated, if applicable, can also prevent issues related to friction and wear.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a reputation for manufacturing high-quality components that meet the demanding requirements of various industries, including automotive and heavy-duty trucking. The company’s commitment to innovation, quality, and customer satisfaction underscores its position as a trusted provider of automotive components.

Conclusion

The Cummins Throttle Lever Pivot Pin, part number 3931900, is a vital component in the operation of the throttle control system in heavy-duty trucks. Its design and function are tailored to ensure reliable and efficient operation, contributing to the overall performance and durability of the engine. Proper installation, maintenance, and troubleshooting are essential to maximize the benefits of this Cummins part.