4927789
Engine Connecting Rod
Cummins®

Introduction

The Cummins 4927789 Engine Connecting Rod is a vital component in the operation of heavy-duty trucks. It serves as a link in the engine’s power transmission system, facilitating the transfer of motion from the piston to the crankshaft. This component’s design and functionality are integral to the efficient and reliable performance of the engine.

Basic Concepts of Engine Connecting Rods

An engine connecting rod, often referred to simply as a “con rod,” is a mechanical component that plays a role in converting the linear motion of the piston into rotational motion of the crankshaft. This conversion is fundamental to the operation of an internal combustion engine, as it allows the engine to generate the power needed to drive the vehicle ¹.

Purpose of the 4927789 Engine Connecting Rod

The Cummins 4927789 Engine Connecting Rod is specifically designed to perform this conversion function within the context of a truck engine. It connects the piston at one end to the crankshaft at the other, ensuring that the force generated by the combustion process is effectively transferred to rotate the crankshaft. This rotation is what ultimately drives the truck’s wheels.

Key Features

The Cummins 4927789 Engine Connecting Rod is characterized by several key features that enhance its performance and durability. These include its material composition, which is typically a high-strength alloy designed to withstand the extreme pressures and temperatures within an engine. The rod’s design elements, such as its I-beam or H-beam structure, contribute to its strength and rigidity. Additionally, precision machining ensures that the rod fits perfectly within the engine, minimizing friction and wear ².

Benefits

The use of the Cummins 4927789 Engine Connecting Rod offers several benefits. Its high-strength material and precise design contribute to improved engine efficiency by ensuring smooth and reliable power transmission. The rod’s durability allows it to withstand the demanding conditions of heavy-duty truck operation, providing long-lasting performance. Furthermore, its reliable operation under heavy-duty conditions helps to maintain engine performance and efficiency over time ³.

Installation Considerations

Proper installation of the Cummins 4927789 Engine Connecting Rod is crucial for ensuring optimal engine performance. This includes adhering to torque specifications for securing the rod to the crankshaft and piston, as well as following alignment procedures to ensure the rod is correctly positioned within the engine. Compatibility with other engine components must also be considered to ensure seamless integration and operation ⁴.

Troubleshooting and Maintenance

Common issues related to engine connecting rods, such as rod knock or bearing failure, can often be traced back to installation errors, material fatigue, or inadequate lubrication. Regular maintenance practices, including checking for signs of wear or damage and ensuring proper lubrication, can help to prevent these issues and ensure the connecting rod operates efficiently. Addressing problems promptly can also help to maintain engine performance and longevity ⁵.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration, and related technologies. With a history of innovation and a reputation for quality, Cummins is committed to manufacturing high-quality automotive components that meet the demanding requirements of heavy-duty applications. The company’s dedication to excellence is reflected in its products, including the Cummins 4927789 Engine Connecting Rod.

Engine Connecting Rod 4927789 Compatibility with Cummins Engines

The Cummins Engine Connecting Rod part number 4927789 is designed to fit seamlessly with a variety of Cummins engines, ensuring optimal performance and reliability. Below is a detailed overview of its compatibility with specific engine models:

GTA38 G CMEICS G116C

The 4927789 connecting rod is engineered to integrate smoothly with the GTA38 G CMEICS G116C engine. This compatibility ensures that the rod can handle the specific load and operational demands of this engine model, providing a reliable connection between the crankshaft and piston.

KTA38GC CM558

Similarly, the 4927789 connecting rod is also suitable for the KTA38GC CM558 engine. This engine model benefits from the precise engineering of the rod, which helps maintain the integrity of the engine’s internal components under various operating conditions.

QSK50 CM2350 K108

The 4927789 connecting rod is also compatible with the QSK50 CM2350 K108 engine. This compatibility is crucial for maintaining the engine’s performance and longevity, as the rod is designed to withstand the specific stresses and torques generated by this engine model.

By ensuring that the 4927789 connecting rod fits these engines, Cummins maintains a high standard of quality and reliability across its engine lineup. This compatibility is a testament to Cummins’ commitment to providing parts that meet the rigorous demands of their engines.

Role of Part 4927789 Engine Connecting Rod in Engine Systems

The part 4927789 Engine Connecting Rod is an integral component in the efficient operation of various engine systems. It serves as the pivotal link between the engine piston and the crankshaft, facilitating the conversion of linear motion into rotational motion. This conversion is essential for the engine’s power generation.

In conjunction with the Engine Piston, the connecting rod ensures smooth and precise transmission of force from the combustion chamber to the crankshaft. This interaction is vital for maintaining engine balance and efficiency.

The connecting rod also plays a significant role when integrated with the Engine Top Level Assembly Piston. This assembly is responsible for the overall performance and durability of the engine. The connecting rod’s design and material properties contribute to the assembly’s ability to withstand high stresses and temperatures.

Furthermore, the connecting rod interfaces with the Camshaft Cover and Camshaft Mounting. Although these components are primarily responsible for valve operation, the timing and precision of their function are influenced by the smooth operation of the connecting rod. Any irregularities in the connecting rod’s performance can affect the camshaft’s operation, leading to potential engine inefficiencies.

In high-performance engines, the connecting rod works in tandem with Performance Parts such as upgraded pistons and crankshafts. These parts are designed to handle increased power outputs and stresses. The connecting rod must be equally robust to ensure that the enhanced performance is reliably transmitted to the crankshaft.

Additionally, the connecting rod’s function is supported by the Piston Cooling Valve. This valve helps manage the temperature of the piston, which in turn affects the connecting rod’s operational environment. Effective cooling ensures that the connecting rod maintains its structural integrity under high thermal loads.

Lastly, the connecting rod’s installation and maintenance are facilitated by the Wiring Retainer Bracket. This bracket helps in organizing and securing wiring around the engine components, ensuring that the connecting rod and other moving parts operate without interference from loose wires.

Conclusion

In summary, the part 4927789 Engine Connecting Rod is a fundamental component that interacts with various engine systems to ensure efficient and reliable engine operation. Its role in transmitting motion and force within the engine cannot be overstated, making it a key element in the engine’s performance and durability.