2868749
Belt Tensioner Bracket
Cummins®

The Belt Tensioner Bracket, identified by Part #2868749, is a component manufactured by Cummins, a well-established name in the heavy-duty truck industry. This part plays a significant role in the efficient operation of heavy-duty trucks, ensuring the proper functioning of the engine’s belt system.

Basic Concepts of Belt Tensioner Brackets

A Belt Tensioner Bracket is a part of the engine’s accessory drive system. Its primary function is to maintain the correct tension on the belts that drive various engine components, such as the alternator, water pump, and air conditioning compressor. By keeping the belts at the optimal tension, the bracket helps ensure these components operate efficiently and reliably. The bracket typically operates through a spring-loaded mechanism or hydraulic system that automatically adjusts the tension as needed ¹.

Purpose of the 2868749 Belt Tensioner Bracket

The 2868749 Belt Tensioner Bracket is designed to play a role in the operation of a truck’s engine by maintaining the appropriate tension on the drive belts. This ensures that the belts do not slip or become too tight, which could lead to premature wear or failure. The bracket interacts with other engine components by providing a stable mounting point for the tensioner pulley, which in turn keeps the belts properly aligned and tensioned ².

Key Features

The 2868749 Belt Tensioner Bracket is constructed from high-quality materials, ensuring durability and reliability in demanding heavy-duty truck applications. Its design includes precision-machined surfaces for a secure fit and smooth operation. Additionally, the bracket may feature corrosion-resistant coatings to enhance its longevity in various operating environments ³.

Benefits

The 2868749 Belt Tensioner Bracket offers several advantages. It contributes to improved engine performance by ensuring that the drive belts operate at the correct tension, which can lead to more efficient power transmission and reduced wear on engine components. The bracket’s durable construction and precise design also enhance the overall reliability and efficiency of the engine’s accessory drive system ⁴.

Installation Process

Installing the 2868749 Belt Tensioner Bracket requires careful attention to detail to ensure proper function and longevity. The process typically involves removing the old bracket, cleaning the mounting area, and securing the new bracket in place using the appropriate fasteners. Tools such as wrenches and socket sets may be required, and it is important to follow the manufacturer’s instructions to ensure correct installation.

Troubleshooting and Maintenance

Common issues with Belt Tensioner Brackets can include wear, corrosion, or misalignment. Diagnosing problems may involve inspecting the bracket and tensioner for signs of damage or excessive wear, and ensuring that the belts are properly tensioned and aligned. Regular maintenance, such as cleaning the bracket and inspecting for damage, can help ensure longevity and optimal performance.

Cummins: A Brief Overview

Cummins is a renowned manufacturer in the heavy-duty truck industry, known for its high-quality engines and components. With a history spanning over a century, Cummins has built a reputation for innovation, reliability, and performance. The company offers a wide range of products designed to meet the demanding requirements of heavy-duty applications, ensuring that truck operators can rely on their equipment for efficient and dependable performance.

Belt Tensioner Bracket 2868749 in Cummins Engines

The Belt Tensioner Bracket 2868749, manufactured by Cummins, is a critical component in the engine’s accessory drive system. This part ensures the proper tensioning of the engine’s serpentine belt, which is essential for the efficient operation of various engine accessories such as the alternator, water pump, and air conditioning compressor.

ISM CM876 Engines

In the ISM CM876 engines, the Belt Tensioner Bracket 2868749 is designed to fit seamlessly into the engine’s layout. This bracket plays a pivotal role in maintaining the correct tension of the serpentine belt, which is crucial for the engine’s performance and longevity. The ISM CM876 engines are known for their robust design and high efficiency, and the Belt Tensioner Bracket 2868749 is engineered to meet these standards, ensuring reliable operation.

Grouping of Engines

The Belt Tensioner Bracket 2868749 is compatible with a range of Cummins engines, including but not limited to, the ISM CM876 series. This part is designed to fit into the engine’s accessory drive system, ensuring that the serpentine belt remains properly tensioned. The compatibility of this bracket with various Cummins engines underscores its versatility and importance in maintaining engine efficiency and performance.

The Belt Tensioner Bracket 2868749 is a testament to Cummins’ commitment to quality and reliability, providing a crucial function in the engine’s operation. Its design and fitment ensure that the serpentine belt operates at optimal tension, contributing to the overall efficiency and longevity of the engine.

Role of Part 2868749 Belt Tensioner Bracket in Engine Systems

The Belt Tensioner Bracket, identified by part number 2868749, is an integral component in maintaining the proper function of various engine systems. Its primary role is to ensure the correct tension is applied to the serpentine belt, which drives multiple peripheral components of the engine.

Interaction with the Alternator Mounting System

When integrated with the alternator mounting system, the Belt Tensioner Bracket works in concert to keep the serpentine belt taut. This tension is vital for the efficient transfer of power from the engine to the alternator. The alternator, in turn, generates electricity to charge the battery and power the vehicle’s electrical systems.

Coordination with Other Components

Beyond the alternator, the Belt Tensioner Bracket also interacts with:

• Water Pump: Ensures consistent coolant circulation to prevent engine overheating.
• Power Steering Pump: Maintains adequate hydraulic pressure for steering assistance.
• Air Conditioning Compressor: Facilitates efficient refrigerant circulation for climate control.

Operational Dynamics

The Belt Tensioner Bracket is designed to automatically adjust the tension on the serpentine belt as it wears. This self-adjusting feature reduces the need for manual intervention and ensures consistent performance across all connected components.

Importance in Maintenance

Regular inspection of the Belt Tensioner Bracket is recommended to ensure it functions correctly. Any signs of wear or malfunction can lead to belt slippage, reduced efficiency of driven components, and potential engine damage.

Conclusion

The Belt Tensioner Bracket (part 2868749) plays a significant role in the seamless operation of engine-driven accessories, contributing to the overall reliability and performance of the vehicle’s engine system. Its design, fitment, and automatic tension adjustment features ensure that the serpentine belt operates at optimal tension, enhancing the efficiency and longevity of the engine.