5260381
V Ribbed Belt
Cummins®

Introduction

The Cummins 5260381 V Ribbed Belt is a component designed for use in heavy-duty truck operations. It plays a role in the engine system by transmitting power to various components, ensuring the efficient operation of the truck. Understanding its purpose and significance is key to maintaining the performance and reliability of heavy-duty trucks.

Basic Concepts of V Ribbed Belts

V Ribbed Belts are characterized by their trapezoidal cross-section, which allows them to fit snugly into corresponding pulleys. This design enhances grip and reduces slippage, ensuring efficient power transmission. In a truck’s engine system, these belts drive multiple components such as the alternator, water pump, and air conditioning compressor, contributing to the overall functionality of the engine ¹.

Purpose of the Cummins 5260381 V Ribbed Belt

The Cummins 5260381 V Ribbed Belt is integral to the operation of a truck’s engine. It drives essential components like the alternator, which charges the battery, and the water pump, which circulates coolant through the engine. By ensuring these components function correctly, the belt plays a role in maintaining engine efficiency and preventing overheating ².

Key Features

This Cummins part is constructed from high-quality materials, designed to withstand the rigors of heavy-duty truck operations. Its design includes multiple ribs that increase the contact surface area with the pulleys, enhancing grip and reducing the likelihood of slippage. These features contribute to the belt’s performance and durability.

Benefits of Using the Cummins 5260381 V Ribbed Belt

Utilizing the Cummins 5260381 V Ribbed Belt offers several advantages. Its robust construction and design elements contribute to improved engine performance and efficiency. The belt’s durability ensures it can withstand the demanding conditions of heavy-duty truck operations, providing reliable service over an extended period.

Installation and Compatibility

Proper installation of the Cummins 5260381 V Ribbed Belt is crucial for its performance and longevity. It is designed to fit specific truck models, ensuring compatibility and optimal function. Following manufacturer guidelines during installation helps maintain the belt’s integrity and ensures it operates as intended.

Maintenance and Troubleshooting

Regular maintenance of the Cummins 5260381 V Ribbed Belt is important for ensuring its longevity and performance. This includes periodic inspections for signs of wear or damage and ensuring proper tension. Addressing issues promptly can prevent more significant problems and maintain the efficiency of the engine system.

Performance Under Various Conditions

The Cummins 5260381 V Ribbed Belt is engineered to perform under a range of operating conditions. Whether facing extreme temperatures or heavy loads, its design and material composition allow it to maintain efficiency and reliability. Understanding its performance characteristics under different conditions can help in making informed decisions about its use and maintenance.

Cummins: A Brief Overview

Cummins Inc. is a leader in the production of high-quality automotive components, including the 5260381 V Ribbed Belt. With a rich history in the industry, Cummins is known for its commitment to innovation and quality, providing components that meet the demanding requirements of heavy-duty truck operations.

V Ribbed Belt 5260381 Compatibility with Cummins Engines

The V Ribbed Belt part number 5260381, manufactured by Cummins, is designed to fit a variety of Cummins engines. This belt is crucial for the proper functioning of engine accessories, ensuring that components such as the alternator, water pump, and air conditioning compressor operate smoothly.

Compatible Engines

• 6B5.9
• B5.9 CM2670 B166C
• B6.7 CM2670 B164C
• B6.7 G CMOH6.0 B125
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISBE CM2150
• ISBE4 CM850
• ISD4.5 CM2220 D108
• QSB5.9 CM2880 B139
• QSB7 CM2880 B117

Grouping of Compatible Engines

• 6B5.9, B5.9 CM2670 B166C, B6.7 CM2670 B164C, B6.7 G CMOH6.0 B125: These engines are typically found in medium-duty applications and are known for their robust performance and reliability.
• ISB/ISD4.5 CM2150 B119, ISD4.5 CM2220 D108: These engines are part of the ISB/ISD series, which are widely used in both medium and heavy-duty applications. They are recognized for their efficiency and durability.
• ISB/ISD6.7 CM2150 SN, QSB5.9 CM2880 B139, QSB7 CM2880 B117: These engines are part of the QSB series, which are often used in agricultural and construction equipment. They are designed to handle heavy-duty tasks with ease.
• ISBE CM2150, ISBE4 CM850: These engines are part of the ISBE series, which are typically used in heavy-duty on-highway applications. They are known for their high power output and reliability in demanding environments.

Role of Part 5260381 V Ribbed Belt in Engine Systems

Part 5260381 V Ribbed Belt is integral to the efficient operation of several key components within an engine system. Its primary function is to transfer rotational force from the crankshaft to auxiliary components, ensuring they operate in unison with the engine’s rhythm.

Integration with the Alternator Drive

The alternator drive system relies on the V Ribbed Belt to convert mechanical energy from the engine into electrical energy. As the belt engages with the alternator’s pulley, it spins the alternator, which in turn generates electricity to power the vehicle’s electrical systems and recharge the battery. This seamless transfer of power is essential for maintaining the vehicle’s electrical supply while the engine is running.

Coordination with the Water Pump

In the cooling system, the V Ribbed Belt drives the water pump, which circulates coolant through the engine block and radiator. This circulation is vital for dissipating heat generated by the engine’s combustion process. The consistent rotation provided by the belt ensures that coolant flow is maintained, preventing the engine from overheating and ensuring optimal operating temperatures are sustained.

General Drive System Functionality

Beyond specific components like the alternator and water pump, the V Ribbed Belt often serves multiple drive systems within the engine bay. It may also power components such as the power steering pump and air conditioning compressor, depending on the vehicle’s configuration. This multi-functionality underscores the belt’s importance in maintaining the synchronized operation of various engine subsystems.

Conclusion

The Cummins 5260381 V Ribbed Belt is a critical component in the operation of heavy-duty truck engines. Its design and features ensure efficient power transmission to essential engine components, contributing to the overall performance and reliability of the vehicle. Proper installation, maintenance, and understanding of its compatibility and functionality are essential for maximizing the benefits of this part.