3289768
V Ribbed Belt
Cummins®

Introduction

The Cummins 3289768 V-Ribbed Belt is a component designed for use in commercial trucks. It facilitates the transfer of power from the engine to various accessories, contributing to the efficiency and reliability of truck operations.

Basic Concepts of V-Ribbed Belts

V-Ribbed Belts are characterized by their trapezoidal cross-section, which allows them to fit into corresponding grooves on pulleys. This design enhances grip and reduces slippage, making them efficient for transmitting power in the drivetrain of a truck ¹. Unlike flat belts, V-Ribbed Belts offer better performance and durability due to their enhanced contact area and reduced stress on the belt material ².

Purpose of the 3289768 V-Ribbed Belt

The Cummins 3289768 V-Ribbed Belt drives various engine accessories such as the alternator, water pump, and power steering pump. Its function is to transfer rotational force from the engine to these components, ensuring they operate efficiently and contribute to the overall performance of the vehicle.

Key Features

The Cummins 3289768 V-Ribbed Belt is constructed from high-quality materials that enhance its performance and durability. Its design includes multiple ribs that increase the contact area with pulleys, improving power transmission efficiency. Additionally, the belt is engineered to withstand the demanding conditions of commercial truck operations, providing reliable performance over extended periods.

Benefits

Using the Cummins 3289768 V-Ribbed Belt offers several advantages. It contributes to improved efficiency in power transmission, ensuring that engine accessories operate optimally. The belt’s durable construction and design enhance its reliability, reducing the likelihood of failure under stress. Furthermore, its longevity means that it requires less frequent replacement, offering cost savings over time.

Installation Process

Proper installation of the Cummins 3289768 V-Ribbed Belt is crucial for ensuring its effective operation. The process involves routing the belt around the designated pulleys, ensuring it fits securely in the grooves. Tools such as belt tensioners may be required to achieve the correct tension, which is vital for optimal performance and longevity. Careful attention to the manufacturer’s guidelines during installation can prevent issues such as slippage or premature wear ³.

Maintenance Tips

To ensure the Cummins 3289768 V-Ribbed Belt operates at its best, regular maintenance is recommended. This includes periodic inspections for signs of wear, such as cracking or glazing, which can indicate the need for replacement. Keeping the belt clean and free from contaminants also contributes to its longevity. Adhering to the manufacturer’s recommended inspection intervals can help identify potential issues before they lead to failure.

Troubleshooting Common Issues

Common problems associated with V-Ribbed Belts include slippage, cracking, and noise. Slippage can often be addressed by adjusting the belt tension or inspecting for pulley misalignment. Cracking may indicate material fatigue or exposure to harsh conditions, suggesting the need for replacement. Noise can be a sign of misalignment or wear, and investigating the source can lead to appropriate corrective actions.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and quality, Cummins serves commercial, industrial, and transportation markets. The company’s reputation in the commercial truck industry is built on its commitment to delivering reliable, efficient, and durable products that meet the demanding needs of its customers.

V-Ribbed Belt 3289768 Compatibility with Cummins Engines

The V-Ribbed Belt part number 3289768, manufactured by Cummins, is designed to fit a variety of Cummins engines. This belt is crucial for the proper functioning of the engine’s ancillary systems, ensuring that components such as the alternator, water pump, and air conditioning compressor operate efficiently.

Compatibility with Specific Engine Models

ISC Series Engines:

• ISC CM554
• ISC CM850

ISL Series Engines:

• ISL CM554
• ISL9 CM2150 SN

L8.9 Series Engines:

• L8.9
• L8.9 CM2670 L134C

QSC Series Engines:

• QSC8.3 CM2880 C102
• QSC8.3 CM554
• QSC8.3 CM850 (CM2850)

QSL Series Engines:

• QSL9 CM554
• QSL9 CM850 (CM2850)

Grouping by Series

The V-Ribbed Belt 3289768 is compatible with multiple engines across different series, including ISC, ISL, L8.9, QSC, and QSL. This belt is engineered to meet the specific requirements of these engines, ensuring a secure fit and reliable performance.

ISC Series

The ISC series engines, including the ISC CM554 and ISC CM850, benefit from the V-Ribbed Belt 3289768. This belt is designed to handle the power demands and operational conditions of these engines, ensuring smooth and efficient operation of the ancillary systems.

ISL Series

For the ISL series engines, such as the ISL CM554 and ISL9 CM2150 SN, the V-Ribbed Belt 3289768 provides the necessary durability and performance. These engines require a belt that can withstand high RPMs and varying loads, which this part is specifically designed to do.

L8.9 Series

The L8.9 and L8.9 CM2670 L134C engines also utilize the V-Ribbed Belt 3289768. This belt is engineered to fit the unique specifications of these engines, ensuring that all connected components receive the power they need to function correctly.

QSC Series

The QSC series engines, including the QSC8.3 CM2880 C102, QSC8.3 CM554, and QSC8.3 CM850 (CM2850), are compatible with the V-Ribbed Belt 3289768. This belt is designed to meet the demands of these engines, providing reliable performance and longevity.

QSL Series

Finally, the QSL series engines, such as the QSL9 CM554 and QSL9 CM850 (CM2850), also use the V-Ribbed Belt 3289768. This belt is engineered to fit these engines perfectly, ensuring that all ancillary systems operate smoothly and efficiently.

Role of Part 3289768 V-Ribbed Belt in Engine Systems

The V-Ribbed Belt, identified as part 3289768, is integral to the efficient operation of several engine components. Its primary function is to transfer rotational force from the engine’s crankshaft to various auxiliary components, ensuring they operate in sync with the engine’s rhythm.

Water Pump Drive

In the context of the water pump drive, the V-Ribbed Belt is responsible for driving the water pump. This is essential for circulating coolant through the engine, maintaining optimal operating temperatures. The belt engages with the water pump pulley, which is connected to the water pump. As the belt rotates, it imparts motion to the pulley, which in turn drives the water pump. This continuous circulation of coolant helps prevent overheating and ensures the engine remains within safe temperature limits ⁴.

Water Pump Drive Pulley

The water pump drive pulley is a key component in this system. It is specifically designed to interface with the V-Ribbed Belt. The pulley’s grooved surface matches the belt’s V-shaped cross-section, allowing for efficient power transmission with minimal slippage. The pulley is mounted on the water pump shaft, and as the belt rotates, it drives the pulley, which then rotates the water pump. This setup ensures that the coolant is pumped consistently, providing reliable engine cooling.

Conclusion

The Cummins 3289768 V-Ribbed Belt plays a significant role in the operation of commercial trucks by ensuring the efficient transfer of power to essential engine accessories. Its design, durability, and compatibility with various Cummins engines make it a reliable component for maintaining the performance and reliability of truck operations.