4089112
Throttle Kit
Cummins®

Introduction

The Cummins 4089112 Throttle Kit is designed for commercial trucks, regulating airflow into the engine to influence performance and efficiency. This component ensures the engine operates within optimal parameters under varying load conditions.

Basic Concepts of Throttle Kits

A throttle kit manages the amount of air entering an engine, directly affecting the fuel mixture, power output, and fuel consumption. It operates through a linkage or electronic system that adjusts the throttle plate’s position in response to driver input or automated control signals, maintaining engine performance and efficiency across different operating conditions ¹.

Purpose of the Cummins 4089112 Throttle Kit

This Cummins part modulates airflow into the engine, impacting performance by maintaining the correct air-fuel mixture for efficient combustion. It optimizes engine operation under various load and speed conditions, contributing to fuel efficiency ².

Key Features

This part is characterized by its robust design and high-quality materials, ensuring durability and reliability in demanding environments. It incorporates advanced features such as precise throttle control mechanisms and compatibility with electronic engine management systems.

Benefits of Using the Cummins 4089112 Throttle Kit

Installing this part improves engine responsiveness, allowing for quicker acceleration and better performance under load. It enhances fuel economy by optimizing the engine’s air-fuel mixture, improving the overall driving experience with smoother operation and reduced engine strain ³.

Installation Process

Installing the Throttle Kit involves removing the existing throttle system and positioning the new kit in its place. Careful attention is paid to aligning the throttle linkage or electronic connections correctly. The system is then tested to confirm it operates within the manufacturer’s specifications, ensuring optimal performance and reliability.

Troubleshooting Common Issues

Common issues may include unresponsive throttle control, irregular engine performance, or difficulty starting the engine. Troubleshooting involves checking the throttle linkage for proper alignment, ensuring electronic connections are secure, and verifying that the throttle plate moves freely without obstruction. Addressing these issues promptly can restore the system’s functionality and prevent further complications.

Maintenance Tips

Regular maintenance of the Throttle Kit is crucial for its longevity and optimal performance. This includes periodic inspection of the throttle linkage and electronic components for wear or damage, cleaning the throttle body to prevent buildup that could affect airflow, and ensuring that all connections are secure and free from corrosion. Adhering to these maintenance practices can extend the kit’s service life and maintain engine efficiency.

About Cummins

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 quality, reliability, and innovation in the commercial truck industry. Its product range includes engines, powertrains, and aftermarket parts, all designed to meet the demanding requirements of commercial and industrial applications.

Components of the Cummins 4089112 Throttle Kit

Nuts and Screws

• Regular Hexagon Nuts (3093946, 3915103, 3915104): Secure various components within the throttle kit.
• Hexagon Head Cap Screws (3900227): Used for fastening components that require a countersunk head.
• Hexagon Flange Head Cap Screws (3900629, 3929864, 3932222): Provide additional surface area for torque application.

Brackets and Levers

• Throttle Control Bracket (3923161): Serves as a mounting point for the throttle control.
• Pivot Shaft Bracket (3930407): Supports the pivot shaft for smooth and precise movement.
• Throttle Lever (3931510): Translates user input into mechanical action within the engine system.
• Bell Crank Lever (3931569): Amplifies the force applied by the throttle lever for more efficient operation.

Springs and Washers

• Tension Springs (3925377, 3931510, 3933130): Maintain the position of moving parts within the throttle kit.
• Plain Washer (3926780): Distributes the load of screws and nuts, preventing damage to softer materials.

Additional Components

• Bushing (3914353): Provides a smooth bearing surface for rotating parts.
• Clip (3914356): Secures components in place.
• Self Tapping Metal Screw (3931532): Ensures a secure fit without the need for pre-drilling.
• Spring Bracket (3931546): Supports the tension springs.
• Control Rods (3932339, 3932397): Connect various components, transmitting motion and force.
• Control Rod Ends (3990093, 3990095): Allow for secure and adjustable connections.
• Control Rod Pivot Pin (3990112): Enables the pivoting motion of control rods.

Conclusion

The Cummins 4089112 Throttle Kit is a vital component for commercial trucks, ensuring optimal engine performance and efficiency. Its robust design, advanced features, and compatibility with electronic engine management systems make it a reliable choice for maintaining engine performance under varying conditions. Regular maintenance and prompt troubleshooting of common issues are essential for the longevity and optimal performance of this part.