5473089
Main Bearing Kit
Cummins®

Introduction

The Cummins 5473089 Main Bearing Kit is a component designed for use in heavy-duty truck engines. Its purpose is to facilitate the smooth operation of the engine by supporting the crankshaft and minimizing friction. This part plays a significant role in maintaining the efficiency and reliability of the engine, contributing to the overall performance of the truck.

Basic Concepts of Main Bearing Kits

Main bearing kits are assemblies that include bearings designed to support the crankshaft within an engine. These bearings allow the crankshaft to rotate with minimal friction, which is vital for the engine’s performance and longevity. By reducing wear and tear on the crankshaft, main bearing kits help maintain engine efficiency and extend the engine’s operational life ¹.

Purpose of the Cummins 5473089 Main Bearing Kit

The Cummins 5473089 Main Bearing Kit is engineered to support the crankshaft in heavy-duty truck engines. It reduces friction between the crankshaft and the engine block, which is crucial for the engine’s smooth operation. By providing a stable and low-friction environment for the crankshaft, this Cummins part helps in maintaining the engine’s performance and durability.

Key Features

The Cummins 5473089 Main Bearing Kit is characterized by its high-quality material composition, which ensures durability and resistance to wear. The design of the kit includes enhancements that improve its performance, such as precision engineering for a perfect fit and optimal function. Additionally, the kit may feature unique attributes that distinguish it from other main bearing kits, such as advanced coatings or materials that further reduce friction and enhance longevity ².

Benefits of Using the Cummins 5473089 Main Bearing Kit

Installing the Cummins 5473089 Main Bearing Kit can lead to improved engine performance due to reduced friction and enhanced crankshaft support. The kit’s durability contributes to the engine’s longevity, potentially leading to cost savings over time by reducing the frequency of replacements and repairs. Moreover, the kit’s design and material quality can contribute to more efficient engine operation, further enhancing the truck’s performance ³.

Installation Process

The installation of the Cummins 5473089 Main Bearing Kit should be conducted following a step-by-step process to ensure proper fitting and function. Best practices include thorough cleaning of the engine block and crankshaft before installation, careful alignment of the bearings, and ensuring that all components are securely in place. Specific considerations may include torque specifications for fastening components and verifying the clearance between the crankshaft and the bearings ⁴.

Troubleshooting and Maintenance

Common issues related to main bearing kits can include excessive wear, noise, or failure due to contamination or improper installation. Regular maintenance practices, such as monitoring engine performance and conducting routine inspections, can help prolong the life of the kit. Signs that may indicate the need for replacement or repair include unusual engine noises, decreased performance, or visible damage to the bearings.

Manufacturer Overview - Cummins

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 strong reputation in the heavy-duty truck industry, Cummins is known for its commitment to quality, innovation, and customer satisfaction. The company’s extensive product range and focus on reliability and performance provide a solid foundation for the quality and dependability of the 5473089 Main Bearing Kit.

Components of Cummins Main Bearing Kit 5473089

Thrust Bearing (4325311)

The thrust bearing, identified by part number 4325311, is a component within the Cummins Main Bearing Kit 5473089. It is specifically designed to handle axial loads that occur as a result of the rotational motion of the crankshaft. This bearing ensures that the crankshaft remains properly aligned within the engine block, thereby reducing wear and tear on both the crankshaft and the engine block itself. The inclusion of the thrust bearing in the kit is essential for maintaining the structural integrity and performance of the engine.

Main Bearing (4390793)

The main bearing with part number 4390793 is another vital component of the Cummins Main Bearing Kit. This bearing is responsible for supporting the radial loads exerted on the crankshaft as it rotates. By providing a smooth and low-friction surface, the main bearing helps to minimize energy loss and maximize engine efficiency. Its role in the kit is to ensure that the crankshaft operates within specified tolerances, contributing to the overall reliability and longevity of the engine.

Main Bearing (5414591)

Another main bearing, identified by part number 5414591, is included in the Cummins Main Bearing Kit to further enhance the support system for the crankshaft. Similar to the 4390793 main bearing, this component is engineered to handle radial loads and provide a stable operating environment for the crankshaft. The presence of multiple main bearings in the kit underscores the importance of balanced load distribution and consistent performance across the engine’s operational range.

Conclusion

The Cummins 5473089 Main Bearing Kit is a critical component for maintaining the efficiency and reliability of heavy-duty truck engines. Its design and features contribute to reduced friction, enhanced engine performance, and extended engine life. Proper installation and maintenance are key to maximizing the benefits of this part, ensuring the longevity and optimal performance of the engine.