3289279
V Ribbed Belt
Cummins®

The Cummins 3289279 V Ribbed Belt is a critical component in commercial trucks, designed to transmit power from the engine to various accessories, ensuring their efficient operation. This part significantly impacts the overall performance and reliability of the vehicle by contributing to the functionality of essential systems.

Basic Concepts of V Ribbed Belts

V Ribbed Belts, characterized by their trapezoidal cross-section, fit snugly into pulley grooves, enhancing grip and reducing slippage for efficient power transmission ¹. Constructed from materials like rubber and polyester cords, these belts are engineered for durability and flexibility. They offer a larger contact area with pulleys compared to flat belts, improving efficiency and reducing wear ².

Role of the 3289279 V Ribbed Belt in Truck Operation

This Cummins part drives various engine accessories, including the alternator, water pump, and power steering pump. By ensuring these components receive the necessary power, the belt contributes to the truck’s operational efficiency and safety ³.

Key Features

The 3289279 V Ribbed Belt is constructed using high-quality materials, including a robust rubber compound and polyester cords, providing strength and flexibility. Its trapezoidal rib profile and optimized belt length ensure a precise fit and efficient power transmission. Additionally, the belt may feature anti-static properties or enhanced resistance to oil and heat.

Benefits

Utilizing this Cummins part offers several benefits. Its design and construction contribute to improved efficiency in power transmission, reducing the load on the engine. The belt’s durability ensures a longer service life, minimizing the need for frequent replacements. Its resistance to wear, slippage, and environmental factors enhances reliability, contributing to the overall performance and longevity of the truck.

Troubleshooting and Maintenance

Common issues with V Ribbed Belts include wear and tear, slippage, and damage from contaminants. Troubleshooting involves inspecting the belt for signs of wear, ensuring proper tension, and checking for alignment with pulleys. Maintenance practices include regular inspections for cracks or fraying, maintaining the correct tension, and replacing the belt according to manufacturer recommendations or when significant wear is observed.

Compatibility with Cummins Engines

The V Ribbed Belt (Part 3289279) is compatible with a variety of Cummins engines, ensuring the proper functioning of the engine’s ancillary components. It is essential for the efficient operation of systems such as the alternator, water pump, and air conditioning compressor.

Small Bore Engines

• 4B3.9
• 6B5.9
• B4.5
• B5.9 GAS PLUS CM556
• C GAS PLUS CM556
• QSB3.9 30 CM550
• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)

Medium Bore Engines

• 6C8.3
• C8.3 G
• ISB CM550
• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250
• QSB5.9 30 CM550
• QSB5.9 44 CM550
• QSB6.7 CM2250

Large Bore Engines

• B6.7 CM2670 B164C
• ISF3.8 CM2220 AN
• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250

Role of Part 3289279 V Ribbed Belt in Engine Systems

The V Ribbed Belt, identified by part number 3289279, is integral to the efficient operation of several key engine components. Its primary function is to transfer rotational force from the engine’s crankshaft to various auxiliary components, ensuring they operate in sync with the engine’s performance.

Alternator Drive

The V Ribbed Belt drives the alternator, generating electrical power that charges the battery and powers the vehicle’s electrical systems.

Front Drive Belt

The V Ribbed Belt often serves as the front drive belt, connecting multiple engine accessories and allowing for a more compact and efficient use of space within the engine bay.

Water Pump Drive

A significant role of the V Ribbed Belt is to drive the water pump, circulating coolant through the engine to regulate temperature and prevent overheating.

Water Pump Drive Pulley

The V Ribbed Belt engages with the water pump drive pulley to transfer motion from the engine to the water pump, ensuring the water pump operates smoothly and maintaining optimal engine temperature under various driving conditions.

Conclusion

In summary, the V Ribbed Belt (part 3289279) plays a pivotal role in the coordinated operation of the alternator, front drive belt system, water pump, and associated pulleys. Its design and function are tailored to ensure reliable performance and durability in demanding engine environments.