3925275
Belt Tensioner Bracket
Cummins®

Introduction

The Cummins 3925275 Belt Tensioner Bracket is a vital component in commercial trucks, contributing to the engine system’s operation and efficiency. Understanding its function and significance is crucial for maintaining the vehicle’s performance and reliability.

Basic Concepts of Belt Tensioner Brackets

A Belt Tensioner Bracket is part of the engine system that secures the belt tensioner. It ensures that belts driving engine components, such as the alternator, water pump, and air conditioning compressor, are kept at the correct tension. This is essential for efficient power transfer and smooth operation of these components. The bracket works with the tensioner to automatically adjust belt tension, compensating for wear and temperature changes ¹.

Purpose of the 3925275 Belt Tensioner Bracket

This Cummins part securely mounts the belt tensioner, ensuring belts remain properly tensioned. Proper tension reduces slippage, leading to increased efficiency and reliability of the engine system. It also contributes to the longevity of the belts by preventing excessive wear ².

Key Features

The 3925275 Belt Tensioner Bracket is made from durable materials to withstand commercial truck operation. Its design includes precise mounting points and alignment features to ensure the tensioner is correctly positioned. It may also have corrosion-resistant coatings or integrated dampening elements to reduce vibration ³.

Benefits

Using the 3925275 Belt Tensioner Bracket improves engine performance by ensuring belts operate at optimal tension. This reduces wear on belts and engine-driven components, enhancing the engine system’s overall durability. Proper belt tension can also improve fuel efficiency and reduce the likelihood of belt failure.

Installation Process

Installing this part involves removing the old bracket, positioning the new one according to the manufacturer’s instructions, and ensuring it is aligned correctly with the tensioner and mounting points. Use the correct fasteners and tighten them to the specified torque settings for a secure fit. After installation, check and adjust the belt tension as necessary.

Troubleshooting Common Issues

Common issues with the 3925275 Belt Tensioner Bracket include misalignment, leading to improper belt tension, or physical damage. If misalignment is suspected, reevaluate the bracket for correct positioning and fastening. Physical damage may require replacement. Regular inspection can help identify these issues early for timely correction.

Maintenance Tips

Regular maintenance is recommended to ensure the optimal performance and longevity of the 3925275 Belt Tensioner Bracket. This includes inspecting the bracket and tensioner for wear or damage, ensuring correct belt tension, and checking for proper alignment. Cleaning the area around the bracket can also help prevent debris accumulation that might affect its operation.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a strong reputation in the commercial truck industry, Cummins offers a wide range of products designed to meet the demanding requirements of commercial vehicles. Their commitment to quality and innovation has made them a trusted name in the industry.

Compatibility with Cummins Engines

The Belt Tensioner Bracket 3925275 is designed to fit various Cummins engines, ensuring the belts maintain the correct tension for optimal performance. Compatible engines include:

• 4B3.9
• 6B5.9
• 6C8.3
• G5.9
• G5.9 CM558
• QSB5.9 CM2880 B139

These engines, while differing in specifications and applications, share a commonality in their belt systems, allowing the use of a single part for multiple engine types. This compatibility simplifies maintenance and repair processes.

Role in Engine Systems

The Belt Tensioner Bracket (part 3925275) is integral to maintaining the proper function and efficiency of various engine systems. It securely mounts the belt tensioner, which keeps the drive belt at the correct tension. This ensures consistent power transfer to auxiliary components such as the alternator and other driven accessories. The bracket allows the tensioner to dynamically adjust the belt tension in response to thermal expansion and contraction, maintaining reliable operation of all driven components.

Conclusion

The Cummins 3925275 Belt Tensioner Bracket is essential for the effective functioning of the belt tensioner, ensuring the drive belt maintains the correct tension across all driven components. This contributes to the overall reliability and performance of the engine system.