3687536
V Ribbed Belt
Cummins®

Introduction

The Cummins 3687536 V-Ribbed Belt is a critical component for commercial trucks, facilitating the transfer of power from the engine to various accessories. Understanding its function and significance is essential for maintaining the efficiency and reliability of truck operations.

Basic Concepts of V-Ribbed Belts

V-Ribbed Belts, characterized by their trapezoidal cross-section, provide enhanced grip and reduced slippage compared to flat belts ¹. This design allows them to effectively transmit power within the drivetrain of a truck, driving multiple accessories simultaneously. Unlike timing belts, which synchronize the rotation of the crankshaft and camshaft, V-Ribbed Belts focus on power transmission to engine accessories.

Purpose of the 3687536 V-Ribbed Belt

The Cummins 3687536 V-Ribbed Belt is integral to the operation of a truck’s engine. It drives essential accessories such as the alternator, water pump, and air conditioning compressor, ensuring these components receive the necessary power for optimal vehicle performance ².

Key Features

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

Benefits

Using the Cummins 3687536 V-Ribbed Belt offers several advantages. It provides improved efficiency in power transmission, ensuring that engine accessories operate effectively. The belt’s robust construction contributes to its reliability, reducing the likelihood of unexpected failures. Furthermore, its durability means it can withstand the rigors of commercial use, leading to longer service intervals and reduced maintenance costs.

Installation Process

Proper installation of the Cummins 3687536 V-Ribbed Belt is crucial for its performance and longevity. The process involves ensuring the belt is correctly aligned with the pulleys and tensioned to the manufacturer’s specifications. Tools such as a belt tension gauge may be required to achieve the correct tension. Following the manufacturer’s guidelines during installation helps ensure the belt operates efficiently and reduces the risk of premature wear or failure.

Common Issues and Troubleshooting

Common issues with the 3687536 V-Ribbed Belt may include slippage, wear, and noise. Slippage can occur if the belt is not properly tensioned or if it has become glazed due to wear. Regular inspection and adjustment of tension can mitigate this issue. Wear may be indicated by cracks or fraying on the belt’s surface, necessitating replacement. Noise, such as squealing, can be a sign of misalignment or improper tension and should be addressed promptly to prevent further damage.

Maintenance Tips

To prolong the life of the Cummins 3687536 V-Ribbed Belt, regular maintenance is recommended. This includes periodic inspections for signs of wear or damage, checking tension to ensure it remains within the manufacturer’s specifications, and replacing the belt according to the recommended service intervals or when signs of significant wear are observed.

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 is known for its commitment to quality, innovation, and customer satisfaction. The company offers a wide range of products designed to meet the demanding requirements of commercial vehicle applications ³.

V-Ribbed Belt 3687536 Compatibility with Cummins Engines

The V-Ribbed Belt part number 3687536, manufactured by Cummins, is designed to fit seamlessly with several of their engine models. This belt is crucial for the proper functioning of engine accessories such as the alternator, water pump, and air conditioning compressor.

QSX15 CM2250 and QSX15 CM2250 ECF

The V-Ribbed Belt 3687536 is compatible with both the QSX15 CM2250 and QSX15 CM2250 ECF engines. These engines are known for their robust performance and reliability, often used in heavy-duty applications. The belt ensures that the engine accessories are driven efficiently, maintaining optimal performance and longevity of the engine components.

QSX15 CM2350 X105

Similarly, the QSX15 CM2350 X105 engine also supports the use of the V-Ribbed Belt 3687536. This engine variant is designed to deliver high power output and efficiency, making it suitable for demanding applications. The belt’s design ensures that it can handle the specific torque and rotational speeds of this engine, providing a reliable connection between the engine and its accessories.

Installation and Maintenance

When installing the V-Ribbed Belt 3687536 on any of these engines, it is essential to follow the manufacturer’s guidelines to ensure a proper fit and function. Regular maintenance checks should be performed to inspect the belt for any signs of wear, cracks, or misalignment, which could lead to premature failure and potential engine damage.

Role of Part 3687536 V-Ribbed Belt in Engine Systems

The part 3687536 V-Ribbed Belt is a critical component in the efficient operation of various engine systems. It is primarily responsible for transmitting power from the engine to multiple auxiliary components, ensuring they function correctly.

Drive System Integration

In the drive system, the V-Ribbed Belt plays a significant role by connecting the crankshaft to other engine components. It efficiently transfers rotational force, enabling the smooth operation of systems such as the alternator, water pump, and air conditioning compressor. This transfer of power ensures that these components receive the necessary drive to perform their functions, such as generating electricity, circulating coolant, and providing air conditioning.

Fan Operation

The V-Ribbed Belt is also integral to the operation of the engine cooling fan. By linking the crankshaft to the fan, it allows the fan to rotate and draw air through the radiator, dissipating heat from the engine. This cooling process is vital for maintaining optimal engine temperature, preventing overheating, and ensuring the longevity and performance of the engine.

The V-Ribbed Belt’s design, with its multiple ribs, provides a larger contact area compared to traditional flat belts, resulting in improved grip and power transmission efficiency. This enhancement is particularly beneficial in modern engines, where multiple accessories require drive from a single source.

Conclusion

In summary, the part 3687536 V-Ribbed Belt is a key element in the drive and cooling systems of an engine, facilitating the efficient transfer of power and ensuring the proper functioning of critical components.