3955170
V Ribbed Belt
Cummins®

Introduction

The Cummins 3955170 V Ribbed Belt is a component designed for use in heavy-duty truck operations. It serves as a link in the engine’s accessory drive system, facilitating the transfer of power from the engine to various components such as the alternator, water pump, and air conditioning compressor. Its role is significant in ensuring the efficient and reliable operation of these accessories, which are vital for the overall performance and functionality of the truck.

Basic Concepts of V Ribbed Belts

V Ribbed Belts are characterized by their trapezoidal cross-section, which allows them to fit snugly into corresponding grooves on pulleys. This design enhances grip and reduces slippage, ensuring efficient power transmission. In a truck’s engine system, these belts drive multiple accessories simultaneously, optimizing space and reducing the complexity of the engine’s accessory drive system ¹.

Role of the 3955170 V Ribbed Belt in Truck Operation

The 3955170 V Ribbed Belt plays a specific role in the operation of a truck by driving essential components such as the alternator, which charges the battery and powers electrical systems, and the water pump, which circulates coolant to regulate engine temperature. Its function is integral to maintaining engine efficiency and ensuring that all driven components operate within their optimal parameters ².

Key Features of the 3955170 V Ribbed Belt

The 3955170 V Ribbed Belt is constructed from high-quality materials, including a durable rubber compound and reinforced with polyester cords. Its design incorporates multiple ribs, which increase the contact surface area with pulleys, enhancing power transmission efficiency. Additionally, the belt features a unique pattern that improves heat dissipation and reduces the risk of glazing, contributing to its longevity and performance.

Benefits of Using the 3955170 V Ribbed Belt

Utilizing the 3955170 V Ribbed Belt offers several benefits. It contributes to improved engine performance by ensuring reliable power transmission to critical components. Its durable construction and design elements enhance its longevity, reducing the frequency of replacements. Furthermore, the efficient power transmission capabilities of the belt contribute to overall engine efficiency, potentially leading to fuel savings ³.

Installation Considerations

Proper installation of the 3955170 V Ribbed Belt is crucial for its performance and longevity. It is important to follow manufacturer guidelines regarding tensioning and alignment to ensure optimal operation. Careful attention should be paid to the belt’s routing to avoid excessive bending or twisting, which can lead to premature wear.

Maintenance and Troubleshooting

Regular maintenance of the 3955170 V Ribbed Belt involves periodic inspections for signs of wear, such as cracking, fraying, or glazing. It is also important to check the belt’s tension regularly and adjust it as necessary to maintain efficient operation. Common issues such as slippage can often be addressed by ensuring proper tension and alignment. In cases of severe wear or damage, replacement of the belt is recommended to prevent component failure.

Performance Under Various Conditions

The 3955170 V Ribbed Belt is designed to perform reliably under a range of operating conditions. Its robust construction allows it to withstand extreme temperatures, both hot and cold, without significant degradation in performance. Additionally, it is capable of handling the heavy loads associated with driving multiple accessories in a heavy-duty truck engine, ensuring consistent operation even under demanding conditions.

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 itself as a reputable name in the automotive industry, particularly in the heavy-duty truck sector. Its product range includes a variety of engines and components designed to meet the demanding requirements of commercial vehicles, emphasizing reliability, performance, and efficiency.

V Ribbed Belt 3955170 Compatibility with Cummins Engines

The V Ribbed Belt part number 3955170, manufactured by Cummins, is designed to fit a variety of Cummins engines, ensuring optimal performance and reliability. This belt is integral to the engine’s accessory drive system, which powers essential components such as the alternator, water pump, and air conditioning compressor.

ISB CM2150 and ISB CM850

The ISB CM2150 and ISB CM850 engines are part of Cummins’ Industrial Series Engines (ISB) lineup. These engines are known for their robust design and efficiency, making them suitable for a range of applications, from construction equipment to power generation. The V Ribbed Belt 3955170 is engineered to fit these engines, providing the necessary tension and durability to handle the demands of these applications.

QSB4.5 CM850 (CM2850) and QSB6.7 CM850 (CM2850)

The QSB4.5 CM850 (CM2850) and QSB6.7 CM850 (CM2850) engines are part of Cummins’ Quant Series Engines (QSB). These engines are designed for versatility and are commonly used in agricultural, marine, and industrial applications. The V Ribbed Belt 3955170 is specifically designed to fit these engines, ensuring that the accessory drive system operates smoothly and efficiently.

Role of Part 3955170 V Ribbed Belt in Engine Systems

The V Ribbed Belt, identified by part number 3955170, is an integral component in the efficient operation of various engine systems. Its primary function is to transfer rotational force from the engine’s crankshaft to multiple peripheral components, ensuring their synchronized operation.

Drive Mechanism

In the drive mechanism, the V Ribbed Belt is responsible for transmitting power from the crankshaft to the pulleys associated with ancillary components. This transfer of power is essential for the operation of these components, allowing them to function in harmony with the engine’s rotational speed. The belt’s ribbed design enhances its grip on the pulleys, reducing slippage and ensuring a consistent transfer of power.

Water Pump Operation

The water pump is a vital component in the engine’s cooling system, responsible for circulating coolant throughout the engine block and radiator. The V Ribbed Belt drives the water pump by engaging with its pulley. As the belt rotates, it causes the water pump impeller to spin, which in turn moves the coolant. This circulation is essential for maintaining optimal engine temperature, preventing overheating, and ensuring the engine operates within its designed parameters.

The V Ribbed Belt’s durability and flexibility are key to its performance in these applications. Its ability to withstand high tension and varying temperatures makes it well-suited for the demanding environment of an engine compartment. Proper maintenance and regular inspection of the belt are recommended to ensure its continued reliable operation and to prevent potential failures that could lead to engine damage.

Conclusion

The Cummins 3955170 V Ribbed Belt is a critical component in the accessory drive system of heavy-duty trucks, ensuring the efficient operation of essential engine components. Its robust design, compatibility with various Cummins engines, and the benefits it offers in terms of performance and longevity make it a valuable part for maintaining the reliability and efficiency of truck engines.