3926872
Belt Tensioner Bracket
Cummins®

Introduction

The Belt Tensioner Bracket 3926872 is a component manufactured by Cummins, a well-established name in the commercial truck industry. This bracket is integral to the operation of commercial trucks, ensuring the efficient functioning of the engine’s belt-driven accessories.

Basic Concepts

A Belt Tensioner Bracket is a part of the engine system that supports the belt tensioner, which maintains the correct tension on the engine’s drive belts. These belts are responsible for operating various components such as the alternator, water pump, and air conditioning compressor. The tensioner bracket allows for automatic adjustment of belt tension as the belts wear or as temperatures change, which is vital for the consistent operation of these components ¹.

Purpose of the Belt Tensioner Bracket 3926872

The Belt Tensioner Bracket 3926872 plays a role in the operation of a truck by supporting the belt tensioner mechanism. This support ensures that the drive belts remain under the correct amount of tension, which contributes to engine efficiency and performance. Proper belt tension is necessary to prevent slippage, which can lead to inefficient operation of belt-driven components and increased wear on the belts themselves ².

Key Features

The Belt Tensioner Bracket 3926872 is designed with several features that enhance its functionality. It is constructed from durable materials to withstand the harsh conditions of commercial truck operations. The design of the bracket allows for easy installation and integration with the belt tensioner. Additionally, it may include features such as corrosion resistance and a design that minimizes vibration, which can affect the longevity and performance of the bracket and the belts it supports ³.

Benefits

Using the Belt Tensioner Bracket 3926872 offers several advantages. It contributes to improved engine performance by ensuring that the drive belts operate efficiently. This can lead to better fuel economy and reduced strain on the engine. Moreover, by maintaining proper belt tension, the bracket helps to reduce wear on the belts, extending their lifespan and reducing the frequency of replacements. The enhanced reliability of the truck’s engine system is another benefit, as consistent belt tension is crucial for the reliable operation of belt-driven accessories.

Installation and Compatibility

When installing the Belt Tensioner Bracket 3926872, it is important to follow the manufacturer’s guidelines to ensure proper fitment and function. Specific requirements or considerations may vary depending on the truck model, so it is advisable to consult the vehicle’s service manual or Cummins’ installation instructions. Proper alignment and secure mounting are critical to the performance of the bracket and the tensioner it supports.

Maintenance and Troubleshooting

Regular maintenance of the Belt Tensioner Bracket 3926872 is important to ensure optimal performance. This includes checking for signs of wear or damage, ensuring that the bracket is securely mounted, and verifying that the belt tension is within the manufacturer’s specifications. Common troubleshooting tips involve inspecting the bracket for corrosion, ensuring that there is no excessive vibration, and addressing any issues with the belt tensioner promptly to prevent further complications.

Safety Considerations

When handling and working with the Belt Tensioner Bracket 3926872, it is important to observe safety guidelines. This includes wearing appropriate personal protective equipment, ensuring that the engine is off and cool before beginning work, and following all safety procedures outlined in the vehicle’s service manual or Cummins’ safety guidelines. Precautions should be taken to avoid injury from moving parts or hot surfaces during installation, maintenance, and troubleshooting.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation in the commercial truck industry for producing reliable and high-performance components. The company’s product range includes engines, powertrain components, and aftermarket parts, all of which are designed to meet the demanding requirements of commercial vehicle operations.

Belt Tensioner Bracket 3926872 Compatibility with Cummins Engines

The Belt Tensioner Bracket part number 3926872, manufactured by Cummins, is designed to fit a variety of Cummins engines. This bracket plays a role in maintaining the tension of the engine’s belts, ensuring efficient power transmission and reducing wear on the belts and pulleys.

Compatibility with Specific Engines

• 6C8.3: The 3926872 Belt Tensioner Bracket is engineered to fit seamlessly with the 6C8.3 engine. Its design ensures that it aligns perfectly with the engine’s layout, providing the necessary support and stability for the belt system.

• C GAS PLUS CM556: This bracket is also compatible with the C GAS PLUS CM556 engine. The precise engineering of the 3926872 part ensures it fits the specific requirements of this engine model, maintaining optimal belt tension and alignment.

• C8.3 G and G8.3: The 3926872 Belt Tensioner Bracket is designed to fit both the C8.3 G and G8.3 engines. Its universal design allows it to be used across these models, providing a reliable solution for maintaining belt tension and alignment in these engines.

Grouping of Compatible Engines

The 3926872 Belt Tensioner Bracket is particularly well-suited for the following groups of engines:

• 6C8.3 and C GAS PLUS CM556: These engines share similar design characteristics, making the 3926872 part an ideal fit for both. Its compatibility with these engines ensures that it can handle the specific demands of each model.

• C8.3 G and G8.3: These engines, while distinct, are designed to work together efficiently. The 3926872 part’s compatibility with both models ensures that it can maintain optimal belt tension and alignment across these engines, providing a reliable solution for users.

By ensuring that the Belt Tensioner Bracket 3926872 fits these engines, Cummins maintains a high standard of quality and reliability, providing engine users with a dependable part that enhances the performance and longevity of their engines.

Conclusion

The Belt Tensioner Bracket, identified by part number 3926872, is an integral component in the assembly and operation of engine systems, particularly when integrating with the alternator drive and its associated components. It ensures that the drive belt maintains optimal tension, facilitating efficient power transmission from the engine to the alternator. This, in turn, supports the alternator’s role in providing necessary electrical power to the vehicle’s systems.