4930897
Belt Tensioner
Cummins®

DISCONTINUED

Cummins®

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

The Cummins 4930897 Belt Tensioner is a component designed for use in commercial trucks. Its purpose is to maintain the correct tension on the belts that drive various engine components, ensuring efficient and reliable operation of the truck’s engine system.

Basic Concepts of Belt Tensioners

A belt tensioner is a device used in an engine system to keep belts at the proper tension. It functions by applying consistent pressure to the belt, which helps in reducing slippage and wear. Maintaining proper belt tension is important for the efficient operation of engine components such as the alternator, water pump, and air conditioning compressor 1.

Purpose of the Cummins 4930897 Belt Tensioner

This Cummins part plays a specific role in the operation of a truck by maintaining optimal belt tension for various engine components. This ensures that the belts drive the components effectively, which contributes to the overall efficiency and performance of the engine. By keeping the belts properly tensioned, the tensioner helps prevent issues such as belt slippage, which can lead to decreased efficiency and potential damage to the engine components 2.

Key Features

This part is designed with several key features that enhance its performance and durability. It is constructed from high-quality materials that are resistant to wear and corrosion, ensuring longevity in demanding commercial truck environments. The design of the tensioner allows for easy installation and adjustment, which simplifies maintenance procedures. Additionally, it incorporates features that reduce noise and vibration, contributing to a smoother operation of the engine system 3.

Benefits of Using the Cummins 4930897 Belt Tensioner

Using this part provides several advantages. It contributes to improved engine efficiency by ensuring that belts operate at the optimal tension, which reduces the risk of slippage and wear. This, in turn, leads to reduced wear on belts and engine components, enhancing the overall performance and reliability of the truck. Additionally, the tensioner’s design and materials contribute to its durability, providing long-term value and performance 4.

Installation and Compatibility

Proper installation of the 4930897 is important for ensuring its effectiveness and compatibility with various truck models and engine types. It is designed to meet specific requirements and considerations to ensure seamless integration into the engine system. Following the manufacturer’s guidelines for installation will help ensure that the tensioner functions as intended and provides the expected benefits.

Troubleshooting and Maintenance

Regular maintenance and troubleshooting are important for ensuring the longevity and optimal performance of the 4930897. Common issues such as noise, vibration, or belt slippage can often be addressed through proper maintenance practices. Regular inspection and adjustment of the tensioner, as well as monitoring the condition of the belts, can help prevent more serious problems and ensure the efficient operation of the engine system.

Cummins Overview

Cummins Inc. is a well-established company with a strong reputation in the industry for producing high-quality automotive components. With a history of innovation and commitment to excellence, Cummins has earned the trust of commercial truck operators worldwide. The company’s dedication to producing reliable and durable components is evident in products like the 4930897, which is designed to meet the demanding requirements of commercial truck applications.

Belt Tensioner 4930897 Compatibility with Cummins Engines

The Belt Tensioner part number 4930897, manufactured by Cummins, is designed to fit seamlessly with several of their engine models. This part is crucial for maintaining the proper tension of the engine’s belts, ensuring efficient operation and longevity of the engine components.

QSB5.9 CM850

The QSB5.9 CM850 engine is one of the models that benefit from the Belt Tensioner 4930897. This engine is known for its robust performance and reliability, making it a popular choice in various industrial applications. The Belt Tensioner ensures that the belts remain taut, preventing slippage and reducing wear on the belt and pulleys.

Group Compatibility

The Belt Tensioner 4930897 is also compatible with other engines within the same group as the QSB5.9 CM850. This compatibility ensures that the part can be used across multiple models, simplifying maintenance and repair processes. Technicians and operators can rely on this part to maintain the integrity of their engine’s belt system, ensuring consistent performance and reducing downtime.

Role of Part 4930897 Belt Tensioner in Engine Systems

In the context of engine systems, the 4930897 Belt Tensioner is integral to ensuring the efficient operation of various components. Specifically, it plays a significant role in the functionality of the pump and the raw water system.

Integration with the Pump

The pump within an engine system is responsible for circulating fluids, which may include coolant, fuel, or lubricants. The 4930897 Belt Tensioner ensures that the drive belt connected to the pump maintains the correct tension. This is essential for the pump to operate at optimal efficiency, preventing slippage that could lead to reduced performance or complete failure of the pump. Proper tensioning allows the pump to deliver consistent fluid flow, which is vital for the engine’s cooling and lubrication systems.

Function in the Raw Water System

In marine or industrial engines that utilize a raw water system for cooling, the 4930897 Belt Tensioner is equally important. The raw water pump, which draws in water from a natural source to cool the engine, relies on a drive belt to operate. The tensioner ensures that this belt remains taut, facilitating smooth and reliable operation of the raw water pump. This, in turn, ensures that the engine maintains an appropriate operating temperature, preventing overheating and potential damage.

Overall System Efficiency

By maintaining the correct tension on the drive belts for both the pump and the raw water system, the 4930897 Belt Tensioner contributes to the overall efficiency and reliability of the engine system. It helps in reducing wear and tear on the belts and connected components, leading to longer service intervals and decreased maintenance requirements.

Conclusion

The Cummins 4930897 Belt Tensioner is a vital component in the maintenance and operation of commercial truck engines. Its role in ensuring proper belt tension contributes to the efficient and reliable performance of engine components, ultimately enhancing the overall functionality and longevity of the engine system. Regular maintenance and proper installation are key to maximizing the benefits of this part.


  1. Kasab, J., & Strzelec, A. (2020). Automotive Emissions Regulations and Exhaust Aftertreatment Systems. SAE International.

  2. Parikyan, T. (Ed.). (2022). Advances in Engine and Powertrain Research and Technology. Springer Nature.

  3. Taghavifar, H., & Mardani, A. (2017). Offroad Vehicle Dynamics Analysis Modelling and Optimization. Springer.

  4. Isermann, R. (2017). Combustion Engine Diagnosis. Springer Vieweg.

SPECIFICATIONS

Package Dimensions
8.8 x 4.1 x 4.13 in
Weight
3.07 lb
* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.