3967026
V Ribbed Belt
Cummins®

Introduction

The Cummins 3967026 V-Ribbed Belt is a critical component designed for commercial trucks, facilitating the transfer of power from the engine to auxiliary components. Understanding its purpose and functionality is essential for maintaining the efficiency and reliability of truck engines.

Basic Concepts of V-Ribbed Belts

V-Ribbed Belts are characterized by their trapezoidal cross-section, which enhances grip and reduces slippage, ensuring efficient power transmission ¹. Unlike flat belts, V-Ribbed Belts can transmit more power and are less prone to misalignment. They are constructed from multiple layers of rubber and fabric, providing durability and flexibility.

Role of the 3967026 V-Ribbed Belt in Truck Operation

The Cummins 3967026 V-Ribbed Belt connects the crankshaft to components such as the alternator, water pump, and power steering pump. This connection allows the engine to power these components, ensuring the truck operates efficiently. The belt’s interaction with these engine components is crucial for the overall functionality of the vehicle, impacting everything from electrical power generation to engine cooling.

Key Features of the 3967026 V-Ribbed Belt

The Cummins 3967026 V-Ribbed Belt is distinguished by its material composition, which includes high-quality rubber and fabric layers. This composition contributes to its durability and resistance to wear. Design elements such as the belt’s trapezoidal cross-section and the precise arrangement of its ribs enhance its performance by improving grip and power transmission efficiency. Additionally, any unique characteristics, such as reinforced edges or specialized coatings, further contribute to its reliability and longevity in demanding truck engine environments.

Benefits of Using the 3967026 V-Ribbed Belt

Utilizing the Cummins 3967026 V-Ribbed Belt in truck operations offers several advantages. Its design and material composition contribute to improved efficiency in power transmission, reducing the load on the engine. The belt’s durability ensures long-term reliability, minimizing the need for frequent replacements. Furthermore, its precise engineering enhances the overall performance and reliability of the truck’s engine system, leading to more consistent and dependable operation.

Installation Guidelines

Proper installation of the Cummins 3967026 V-Ribbed Belt is vital for optimal performance. The process involves several steps, including preparing the engine compartment, correctly routing the belt around the pulleys, and ensuring it is properly tensioned. Necessary tools for installation may include a belt tensioner tool and a socket wrench. Precautions such as wearing protective gloves and ensuring the engine is cool before beginning work are important to ensure safety and effectiveness.

Maintenance Tips

Regular maintenance practices are recommended to prolong the life of the Cummins 3967026 V-Ribbed Belt. Inspection routines should include checking for signs of wear, such as cracks or fraying, and ensuring the belt is properly tensioned. Addressing these issues promptly can prevent more significant problems down the line and contribute to the overall efficiency and reliability of the truck’s engine system.

Troubleshooting Common Issues

Common problems associated with V-Ribbed Belts, such as slippage, noise, and premature wear, can often be addressed through proper maintenance and timely replacement. Slippage may indicate improper tension or wear, while noise could signal misalignment or damage. Identifying these issues early and taking corrective action can help maintain the belt’s performance and extend its lifespan.

Cummins: A Brief Overview

Cummins Inc. is a well-established manufacturer in the commercial truck industry, known for its wide range of diesel engines and related technologies. The company’s history is marked by innovation and a commitment to quality, which is reflected in its product range. Cummins’ reputation for reliability and performance makes its components, including the 3967026 V-Ribbed Belt, a popular choice among truck operators and maintenance professionals ².

V-Ribbed Belt 3967026 Compatibility with Cummins Engines

The V-Ribbed Belt part number 3967026, manufactured by Cummins, is a critical component in the engine’s accessory drive system. This belt ensures that various engine accessories, such as the alternator, water pump, and air conditioning compressor, operate correctly. Below is a detailed description of the compatibility of this belt with various Cummins engines:

ISB Series Engines

• ISB CM2150
• ISB CM850
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB9 CM2150 SN
• ISB9 CM2250

The V-Ribbed Belt 3967026 is compatible with the ISB series engines, which are known for their robust performance and reliability. These engines are widely used in various applications, including heavy-duty trucks and industrial machinery.

ISC Series Engines

• ISC CM2150
• ISC CM850
• ISC8.3 CM2250
• ISC9 CM2150

The ISC series engines also utilize the V-Ribbed Belt 3967026. These engines are typically found in medium-duty trucks and are recognized for their efficiency and durability.

ISL Series Engines

• ISL CM2150
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250

The ISL series engines are another group that fits the V-Ribbed Belt 3967026. These engines are commonly used in on-highway and vocational applications, providing a balance of power and fuel efficiency.

ISF Series Engines

• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103

The ISF series engines, which are designed for high-performance applications, also require the V-Ribbed Belt 3967026 to ensure the proper functioning of their accessory systems.

QSB Series Engines

• QSB4.5 CM2250 EC
• QSB4.5 CM850(CM2850)
• QSB6.7 CM2350 B105
• QSB6.7 CM850(CM2850)
• QSB7 CM2880 B117

The QSB series engines, used in a variety of applications from agricultural to construction, are compatible with the V-Ribbed Belt 3967026. This belt ensures that the engine’s accessories operate smoothly, contributing to the engine’s overall performance.

QSC and QSL Series Engines

• QSC8.3 CM850(CM2850)
• QSL8.9 CM2150 L141
• QSL9 CM2250
• QSL9 CM2350 L102

The QSC and QSL series engines, which are designed for specific applications such as rail and marine, also use the V-Ribbed Belt 3967026. This belt is crucial for maintaining the operational integrity of these engines’ accessory systems.

By ensuring the correct fitment of the V-Ribbed Belt 3967026, engine performance and reliability are maintained across these various Cummins engine models.

Role of Part 3967026 V-Ribbed Belt in Engine Systems

The V-Ribbed Belt, identified by part number 3967026, is integral to the efficient operation of several key engine components. This belt is designed to transfer rotational force from the engine’s crankshaft to various auxiliary components, ensuring they function correctly.

Interaction with Components

1. Belt: The V-Ribbed Belt itself is a continuous loop that wraps around multiple pulleys connected to different engine components. Its ribbed design increases the surface area in contact with the pulleys, enhancing grip and efficiency.

2. Front Drive: In systems where a front-mounted accessory drive is used, the V-Ribbed Belt is essential. It drives the front-mounted accessories, ensuring they receive the necessary power to operate.

3. Alternator Drive: The alternator is a vital component that charges the vehicle’s battery and powers the electrical systems while the engine is running. The V-Ribbed Belt drives the alternator pulley, allowing the alternator to generate electricity.

4. Water Pump Drive: The water pump circulates coolant through the engine to maintain optimal operating temperatures. The V-Ribbed Belt drives the water pump, ensuring consistent coolant flow and preventing engine overheating.

In summary, the V-Ribbed Belt (part 3967026) plays a significant role in the coordinated function of these engine components, contributing to the overall performance and reliability of the engine system.

Conclusion

The Cummins 3967026 V-Ribbed Belt is a vital component in the operation of commercial trucks, ensuring efficient power transmission from the engine to auxiliary components. Its design, material composition, and compatibility with various Cummins engines make it a reliable choice for maintaining engine performance and reliability. Proper installation, regular maintenance, and timely troubleshooting of common issues are essential for maximizing the lifespan and efficiency of this Cummins part.