3978479
Clamping Plate
Cummins®

The Cummins 3978479 Clamping Plate Assembly is a component designed for use in heavy-duty trucks. It serves a specific function within the truck’s engine or transmission system, contributing to the overall efficiency and reliability of the vehicle. Understanding its purpose and operation is key to maintaining and optimizing the performance of heavy-duty trucks.

Basic Concepts of Clamping Plate Assembly

A Clamping Plate Assembly is a mechanical component used to secure two or more parts together under pressure. In the context of a truck’s engine or transmission, it plays a role in ensuring that components remain firmly in place, which is vital for the smooth operation of the vehicle ¹. The assembly typically consists of a plate and various fasteners that apply pressure to hold parts together.

Purpose of the 3978479 Clamping Plate Assembly

The 3978479 Clamping Plate Assembly is designed to secure specific components within a truck’s engine or transmission. Its role involves maintaining the alignment and integrity of these components, which is important for the efficient transfer of power and the overall functionality of the truck. By ensuring that parts are held in the correct position, the assembly contributes to the reliable operation of the vehicle ².

Key Features

The 3978479 Clamping Plate Assembly features a durable material composition, typically including high-strength steel or aluminum, which provides resistance to wear and corrosion. Its design may include precision-machined surfaces and specialized fasteners to ensure a secure fit. These features enhance the assembly’s performance and durability, making it suitable for the demanding conditions of heavy-duty truck operation ³.

Benefits

The use of the 3978479 Clamping Plate Assembly offers several benefits. It contributes to improved efficiency by ensuring that components are securely held in place, which can lead to better performance and reduced wear on other parts. Additionally, its reliable design enhances the overall reliability of the truck, potentially reducing downtime and maintenance costs.

Installation Process

Installing the 3978479 Clamping Plate Assembly requires careful attention to ensure a secure and correct fit. The process involves cleaning the mating surfaces, positioning the assembly, and using the appropriate tools to tighten the fasteners to the specified torque. Following the manufacturer’s guidelines for installation is important to ensure the assembly functions as intended.

Common Issues and Troubleshooting

Common issues with the 3978479 Clamping Plate Assembly may include loosening of fasteners, wear on the clamping surfaces, or damage to the assembly itself. Troubleshooting these issues involves inspecting the assembly for signs of wear or damage, tightening or replacing fasteners as necessary, and ensuring that the mating surfaces are clean and free of debris.

Maintenance Tips

Regular maintenance of the 3978479 Clamping Plate Assembly is important to ensure its longevity and optimal performance. This includes periodic inspection for signs of wear or damage, cleaning the mating surfaces to remove any debris, and ensuring that fasteners are tightened to the correct torque. Following these maintenance tips can help prevent issues and ensure the assembly continues to function effectively.

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 of innovation and a commitment to quality, Cummins has established a reputation for producing reliable and efficient components for the automotive industry. The company’s product range includes a variety of engine and component solutions designed to meet the needs of heavy-duty applications.

Cummins Engine Compatibility with Part 3978479

The Clamping Plate Assembly part 3978479, manufactured by Cummins, is designed to fit a variety of Cummins engines. This part is integral in securing and stabilizing components within the engine assembly, ensuring optimal performance and longevity. Below is a detailed breakdown of the engines compatible with this part:

B4.5 Series

• B4.5 CM2350 B129B
• B4.5 RGT

B6.7 Series

• B6.7 CM2670 B164C

D4.0 Series

• D4.0 CM2620 D103B

F3.8 Series

• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102

F4.5 Series

• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

ISB/ISD4.5 Series

• ISB/ISD4.5 CM2150 B119
• ISB4.5 CM2350 B104

ISBE Series

• ISBE4 CM850

ISD4.5 Series

• ISD4.5 CM2220 D108

ISF3.8 Series

• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109

ISF4.5 Series

• ISF4.5 CM2220 F123

QSB4.5 Series

• QSB4.5 CM2250 EC
• QSB4.5 CM850 (CM2850)

QSB6.7 Series

• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 CM850 (CM2850)

QSB7 Series

• QSB7 CM2880 B117

QSF3.8 Series

• QSF3.8 CM2350 F107

This comprehensive compatibility ensures that the Clamping Plate Assembly part 3978479 can be effectively used across a wide range of Cummins engines, providing a reliable solution for securing and stabilizing engine components.

Role of Part 3978479 Clamping Plate Assembly in Engine Systems

The 3978479 Clamping Plate Assembly is integral to the efficient operation of several engine components. When integrated with the damper, it ensures that the rotational forces are consistently transmitted without undue stress, which is essential for maintaining the balance and longevity of the engine. This assembly helps in securing the damper to the crankshaft, thereby minimizing the potential for misalignment that could lead to increased wear and tear.

In conjunction with the vibration control system, the 3978479 Clamping Plate Assembly plays a significant role in dampening the vibrations generated during engine operation. By providing a stable mounting point for the damper, it contributes to a smoother running engine, which is particularly important in high-performance applications where vibrations can adversely affect both the engine’s components and the overall vehicle dynamics.

When considering the long block—comprising the engine block, crankshaft, pistons, and other essential components—the 3978479 Clamping Plate Assembly ensures that all these parts work in unison. It facilitates the secure attachment of the damper to the front of the crankshaft, which is a key element in the long block’s operation. This secure attachment is vital for the crankshaft’s stability and the engine’s overall performance, as it helps in maintaining the precise timing and balance required for optimal engine function.

Conclusion

The Cummins 3978479 Clamping Plate Assembly is a critical component in the maintenance and optimization of heavy-duty truck engines. Its role in securing and stabilizing engine components ensures efficient operation, reduces wear and tear, and contributes to the overall reliability of the vehicle. Regular maintenance and proper installation are essential to maximize the benefits of this Cummins part.