4917120
Engine Crankshaft
Cummins®

The Cummins 4917120 Engine Crankshaft is a vital component in heavy-duty truck engines, contributing significantly to the overall operation and performance of the vehicle. This part is designed to withstand the demanding conditions of heavy-duty applications, ensuring reliable and efficient engine operation.

Basic Concepts of Engine Crankshafts

An engine crankshaft is a mechanical part that converts the linear motion of the pistons into rotational motion, which is then used to drive the vehicle. Within an internal combustion engine, the crankshaft plays a central role by connecting the pistons to the transmission system. As the pistons move up and down due to combustion, the crankshaft translates this motion into a rotating force, which powers the vehicle ¹.

Purpose of the 4917120 Engine Crankshaft

The Cummins 4917120 Engine Crankshaft is specifically engineered to enhance the performance and efficiency of heavy-duty trucks. It contributes to the engine’s power output by efficiently converting the linear motion of the pistons into rotational motion. This part is designed to handle high loads and stresses, ensuring that the engine operates smoothly and reliably under various conditions.

Key Features

The Cummins 4917120 Engine Crankshaft boasts several key features that enhance its performance and durability. It is constructed from high-quality materials, ensuring resistance to wear and fatigue. The design includes precise balancing to reduce vibrations and improve engine smoothness. Additionally, the crankshaft features advanced machining techniques that enhance its strength and reliability.

Benefits

Using the Cummins 4917120 Engine Crankshaft offers several benefits, including improved engine reliability, enhanced performance, and longevity. The high-quality materials and precise engineering contribute to a more robust and efficient engine operation. These benefits translate to better truck performance, reduced maintenance needs, and increased overall reliability.

Installation Process

Installing the Cummins 4917120 Engine Crankshaft requires careful attention to detail to ensure proper function and longevity. The process involves several steps, including preparing the engine block, aligning the crankshaft, and securing it in place. Proper tools and techniques are necessary to avoid damage and ensure a secure fit. Following manufacturer guidelines and best practices is crucial for a successful installation.

Troubleshooting Common Issues

Common issues with engine crankshafts may include misalignment, wear, and damage. Symptoms such as unusual noises, vibrations, or decreased performance can indicate problems with the crankshaft. Troubleshooting steps may involve inspecting the crankshaft for signs of wear, checking alignment, and addressing any damage. Regular maintenance and timely repairs can help prevent major issues.

Maintenance Tips

To ensure optimal performance and longevity of the Cummins 4917120 Engine Crankshaft, regular maintenance is essential. This includes conducting regular inspections for signs of wear or damage, ensuring proper lubrication, and following recommended replacement intervals. Adhering to these maintenance practices helps maintain the crankshaft’s efficiency and reliability.

Cummins Overview

Cummins Inc. is a renowned manufacturer of diesel engines and related technologies, with a strong reputation for quality and innovation. The company has a long history of producing reliable and high-performance engine components, including crankshafts. Cummins is committed to delivering products that meet the demanding needs of heavy-duty applications, ensuring customer satisfaction and trust ².

Engine Crankshaft Compatibility with Cummins Engines

The Cummins Engine Crankshaft part 4917120 is designed to fit seamlessly with several models of Cummins engines. Here is a detailed look at its compatibility with the specified engines:

QSK19 Series

• QSK19 CM2350 K105
• QSK19 CM2350 K114
• QSK19 CM2350 K144G

The part 4917120 is engineered to integrate with the QSK19 series, specifically the CM2350 models. These engines are known for their robust performance and reliability, making the crankshaft a critical component. The crankshaft ensures smooth operation and power delivery, which is essential for the high-performance demands of these engines.

QSK19 CM850 MCRS

The part 4917120 is also compatible with the QSK19 CM850 MCRS engine. This model is designed for applications requiring high power output and efficiency. The crankshaft in this engine model is crucial for maintaining the balance and smooth operation of the engine, ensuring that it meets the stringent performance standards required for its intended use.

Compatibility Summary

The Cummins Engine Crankshaft part 4917120 is a versatile component that fits well within the QSK19 series engines. Its design ensures compatibility with the CM2350 models (K105, K114, and K144G) and the CM850 MCRS model, providing a reliable and efficient solution for these engines. This compatibility is essential for maintaining the performance and longevity of the engines, ensuring they operate at peak efficiency.

Role of Part 4917120 Engine Crankshaft in Engine Systems

The part 4917120 Engine Crankshaft is integral to the operation of the engine system, working in concert with several key components to ensure efficient and effective engine performance.

Interaction with the Cylinder Block

The cylinder block serves as the structural foundation of the engine, housing the cylinders where combustion occurs. The Engine Crankshaft, part 4917120, is positioned within the lower portion of the cylinder block. It is supported by main bearings which are housed in the block. As the pistons move up and down within the cylinders due to combustion, they are connected to the crankshaft via connecting rods. This linear motion of the pistons is converted into rotational motion by the crankshaft, which then drives the rest of the engine’s components.

Functionality within the Engine System

The rotational motion generated by the crankshaft is transmitted through the flywheel, which helps to smooth out the power delivery. This motion is then sent to the transmission via the clutch in manual transmissions or the torque converter in automatic transmissions. The crankshaft’s design, including its counterweights and balance shafts, helps to minimize vibrations and ensure smooth operation of the engine.

In summary, the part 4917120 Engine Crankshaft plays a significant role in transforming the linear motion of the pistons into rotational motion, which is essential for the operation of the engine and the vehicle as a whole. Its precise interaction with the cylinder block and other engine components is vital for the overall efficiency and performance of the engine system.

Conclusion

The Cummins 4917120 Engine Crankshaft is a critical component in heavy-duty truck engines, designed to enhance performance, reliability, and efficiency. Its robust construction, precise engineering, and compatibility with various Cummins engine models make it an essential part for maintaining the high standards of heavy-duty applications. Regular maintenance and proper installation are key to ensuring the longevity and optimal performance of this part.