3288790
V Ribbed Belt
Cummins®

The Cummins 3288790 V Ribbed Belt is a critical component in commercial trucks, facilitating the transfer of power from the engine to various auxiliary components. Understanding its purpose and significance is essential for maintaining the efficiency and reliability of truck engines.

Basic Concepts of V Ribbed Belts

V Ribbed Belts, characterized by their trapezoidal cross-section, engage more effectively with pulleys compared to flat belts. Constructed from multiple layers of rubber and fabric, these belts offer durability and flexibility. In a truck’s engine system, V Ribbed Belts transmit power from the crankshaft to components such as the alternator, water pump, and air conditioning compressor, ensuring these systems operate efficiently ¹.

Role of the 3288790 V Ribbed Belt in Truck Operation

The Cummins 3288790 V Ribbed Belt drives essential components within the engine system. It powers the alternator, which charges the battery and supplies electrical power to the truck’s systems. Additionally, it drives the water pump, which circulates coolant through the engine to manage temperature, and may also power the air conditioning compressor, contributing to the overall comfort and functionality of the vehicle ².

Key Features of the 3288790 V Ribbed Belt

The Cummins 3288790 V Ribbed Belt is distinguished by several key features that enhance its performance and durability. Constructed from high-quality materials, including a robust rubber compound and a durable fabric core, it provides resistance to wear and tear. The belt’s design includes multiple V-shaped ribs that increase the contact surface with pulleys, improving power transmission efficiency. Additionally, it features a unique pattern that reduces noise and vibration during operation ³.

Benefits of Using the 3288790 V Ribbed Belt

Utilizing the Cummins 3288790 V Ribbed Belt offers several benefits. Its efficient power transmission capabilities contribute to improved engine performance and fuel efficiency. The belt’s durable construction ensures reliability under demanding conditions, reducing the likelihood of unexpected failures. Furthermore, its design characteristics promote longevity, minimizing the need for frequent replacements and contributing to overall cost savings for truck operators ⁴.

Troubleshooting Common Issues with V Ribbed Belts

Common issues that may arise with V Ribbed Belts include slippage, wear, and noise. Slippage can occur due to improper tension or contamination of the belt surface, leading to reduced efficiency and potential damage to driven components. Wear is a natural consequence of use but can be accelerated by exposure to harsh conditions or improper maintenance. Noise may indicate misalignment or damage to the belt or pulleys. Addressing these issues promptly through inspection, tension adjustment, and replacement when necessary can help maintain optimal performance ⁵.

Maintenance Tips for V Ribbed Belts

Maintaining V Ribbed Belts is crucial for ensuring their optimal performance and longevity. Regular inspection for signs of wear, cracking, or contamination is recommended. Tension should be checked and adjusted according to manufacturer specifications to prevent slippage and ensure efficient power transmission. Additionally, keeping the belt and pulleys clean and free from debris can help prevent premature wear and noise. Following recommended replacement intervals based on usage and condition is also important for maintaining reliability ⁶.

Cummins: A Brief 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 reputation for quality, innovation, and reliability in the commercial truck industry. The company’s commitment to excellence is evident in its diverse product offerings, which include engines, powertrains, and aftermarket parts designed to meet the demanding requirements of commercial transportation. Cummins’ dedication to customer satisfaction and technological advancement continues to drive its success in the industry.

V Ribbed Belt 3288790 Compatibility with Cummins Engines

The V Ribbed Belt part number 3288790, manufactured by Cummins, is designed to fit a variety of Cummins engines. This belt is essential for the proper functioning of the engine’s ancillary systems, ensuring that components such as the alternator, power steering pump, and air conditioning compressor operate efficiently.

Compatible Engines

• 4B3.9
• 6B5.9
• B5.9 G
• B5.9 GAS PLUS CM556
• G5.9
• G5.9 CM558
• QSB3.9 CM2880 B138
• QSB5.9 CM2880 B139

Grouping of Compatible Engines

The engines listed above can be grouped based on their model and configuration. For instance:

• 4B3.9 and 6B5.9: These engines are part of the earlier Cummins lineup, known for their robust design and reliability.
• B5.9 G and B5.9 GAS PLUS CM556: These engines are part of the B series, which includes both diesel and gas variants.
• G5.9 and G5.9 CM558: These engines are part of the G series, with the CM558 variant indicating a specific configuration or upgrade.
• QSB3.9 CM2880 B138 and QSB5.9 CM2880 B139: These engines belong to the QSB series, which is known for its versatility and efficiency in various applications.

Each of these engines relies on the V Ribbed Belt 3288790 to maintain the correct tension and alignment of the ancillary components, ensuring optimal performance and longevity of the engine system.

Role of Part 3288790 V Ribbed Belt in Engine Systems

The V Ribbed Belt, identified by part number 3288790, is integral to the efficient operation of several engine components. Its primary function is to transfer rotational force from the crankshaft to various peripheral components, ensuring they operate in sync with the engine’s rhythm.

Alternator Drive

In the alternator drive system, the V Ribbed Belt connects the crankshaft to the alternator. This connection allows the alternator to spin at a speed proportional to the engine’s RPM. As the belt rotates the alternator, it generates electrical power that charges the battery and powers the vehicle’s electrical systems. The consistent and reliable transfer of power is essential for maintaining the vehicle’s electrical supply, especially under varying engine loads.

Water Pump Drive

The V Ribbed Belt also plays a significant role in the water pump drive system. By connecting the crankshaft to the water pump, it ensures that coolant circulates through the engine. This circulation is vital for dissipating heat generated during combustion, thereby maintaining optimal engine temperature. Efficient coolant flow prevents overheating, which can lead to engine damage and reduced performance.

Conclusion

In summary, the V Ribbed Belt (part 3288790) is a key component in driving both the alternator and water pump, ensuring these systems function correctly and contribute to the overall reliability and performance of the engine.