3079743
Ring Dowel
Cummins®

The Cummins 3079743 Ring Dowel is a specialized component designed for use in heavy-duty truck engines. Its primary role is to ensure precise alignment and structural integrity within the engine assembly. By maintaining the correct positioning of various engine components, the ring dowel contributes to the overall efficiency and reliability of the engine.

Basic Concepts of Ring Dowel

A ring dowel is a mechanical fastener used to align and secure components within an assembly. It typically consists of a cylindrical body with a threaded or unthreaded end. In engine applications, ring dowels play a role in maintaining the alignment of parts such as cylinder heads, engine blocks, and other critical components. They ensure that these parts are held in the correct position relative to each other, which is vital for the engine’s operation ¹.

Purpose of the Cummins 3079743 Ring Dowel

The Cummins 3079743 Ring Dowel is specifically engineered to maintain alignment and structural integrity within heavy-duty truck engines. It ensures that components such as the cylinder head are properly positioned in relation to the engine block. This alignment is important for the efficient operation of the engine, as it affects combustion efficiency, reduces wear on moving parts, and contributes to the overall longevity of the engine ².

Key Features

The Cummins 3079743 Ring Dowel is characterized by several key features that enhance its performance and durability. It is typically made from high-strength materials such as steel, which provide the necessary rigidity and resistance to wear. The design of the ring dowel includes precise dimensions to ensure a perfect fit within the engine assembly. Additionally, the surface finish of the dowel is engineered to minimize friction and enhance the overall stability of the components it secures ³.

Benefits

The use of the Cummins 3079743 Ring Dowel offers several advantages in heavy-duty truck engines. It contributes to improved engine performance by ensuring that all components are aligned correctly, which enhances combustion efficiency and reduces the risk of mechanical failures. The durability of the ring dowel also adds to the longevity and reliability of the engine, making it a valuable component in demanding applications.

Installation Process

Proper installation of the Cummins 3079743 Ring Dowel is important to ensure its effectiveness. The process involves cleaning the mating surfaces to remove any debris or old gasket material. The ring dowel should be positioned according to the manufacturer’s specifications, ensuring it is aligned correctly within the engine assembly. Torque settings should be followed precisely to secure the dowel in place without over-tightening, which could damage the component or surrounding parts.

Troubleshooting and Maintenance

Common issues with ring dowels include misalignment, wear, and corrosion. Regular inspection during maintenance intervals can help identify these problems early. If a ring dowel is found to be damaged or worn, it should be replaced to prevent further complications. Proper cleaning and lubrication of the mating surfaces can also help prolong the life of the ring dowel and ensure continued reliable performance.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history spanning over a century, Cummins has established a strong reputation for quality and innovation in the automotive and heavy-duty truck industry. The company’s product range includes a variety of engines and components designed to meet the demanding requirements of commercial and industrial applications.

Ring Dowel 3079743 Compatibility with Cummins Engines

The Ring Dowel part number 3079743, manufactured by Cummins, is a critical component in various engine models. This dowel is essential for maintaining the alignment and stability of the piston rings within the engine cylinder. Here’s how it fits with different Cummins engines:

ISG11, ISG12, and QSG12 Engines

• ISG11 CM2880 G108
• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111
• QSG12 CM2880 G112
• QSG12/X12 CM2350 G110

These engines, which include both ISG and QSG variants, utilize the Ring Dowel 3079743 to ensure the piston rings are properly aligned. This alignment is crucial for maintaining optimal engine performance and longevity. The dowel’s precision fit helps in reducing friction and wear, contributing to the overall efficiency of the engine.

QSK19 and QSK45 Engines

• QSK19 CM500
• QSK19G
• QSK45 CM500

The QSK19 and QSK45 engines also benefit from the Ring Dowel 3079743. This part is integral in these engines for maintaining the integrity of the piston ring assembly, which is vital for the high-performance demands of these models. The dowel’s role in these engines is to ensure that the piston rings operate smoothly, thereby enhancing the engine’s power output and reliability.

QSK60 Engines

• QSK60 CM500
• QSK60 CM850 MCRS
• QSK60 G CM2358 K110
• QSK60G
• QSK78 CM500

The QSK60 series engines, including the QSK60G and QSK78 CM500, are designed for heavy-duty applications. The Ring Dowel 3079743 is a key component in these engines, ensuring that the piston rings maintain their correct position under high stress conditions. This helps in preventing engine damage and ensures consistent performance, even in demanding environments.

X12 and X13 Engines

• X12 CM2670 X121B
• X13 CM2670 X122B

The X12 and X13 engines also incorporate the Ring Dowel 3079743. This part is essential for these engines to achieve the necessary precision in piston ring alignment, which is critical for their performance and durability. The dowel’s design ensures that the piston rings operate efficiently, contributing to the overall effectiveness of these engines.

Role of Part 3079743 Ring Dowel in Engine Systems

The Part 3079743 Ring Dowel is an essential component in the assembly and alignment of various engine systems. Its primary function is to ensure precise positioning and secure fitting of components, which is vital for the overall performance and reliability of the engine.

Integration with Key Engine Components

Turbocharger and Turbocharger Support

In turbocharger systems, the Ring Dowel is used to align the turbocharger with its support structure. This alignment is necessary to maintain the correct orientation and spacing, which ensures efficient airflow and reduces the risk of mechanical stress on the turbocharger.

Camshaft and Camshaft Gear

When integrating the camshaft with the camshaft gear, the Ring Dowel plays a significant role in maintaining the accurate timing required for optimal engine performance. It ensures that the camshaft is correctly positioned relative to the crankshaft, which is essential for the precise opening and closing of the engine’s valves.

Connecting Rod and Piston

In the connecting rod and piston arrangement, the Ring Dowel helps in securing the connecting rod to the crankshaft. This secure fitting is crucial for the smooth operation of the piston within the cylinder, contributing to the engine’s efficiency and longevity.

Rocker Lever Shaft and Lever

For the rocker lever shaft and associated levers, the Ring Dowel ensures that these components are correctly aligned with the camshaft. This alignment is important for the proper transfer of motion from the camshaft to the valves, enhancing the engine’s performance.

Supporting Structural Integrity

Connection Support and Design

In various connection supports throughout the engine, the Ring Dowel contributes to the structural integrity of the assembly. It helps in maintaining the designed spacing and alignment between components, which is essential for the engine’s durability and performance.

Enhancing Performance and Reliability

Aftercooler and Plumbing

In aftercooler systems, the Ring Dowel assists in the precise alignment of plumbing components. This ensures that the cooling process is efficient, which is important for maintaining optimal engine temperature and performance.

Alternative and Lever Arrangements

In alternative lever arrangements, such as those found in complex engine designs, the Ring Dowel ensures that all levers are correctly positioned. This is important for the smooth operation of the engine’s various mechanical systems.

Conclusion

The Cummins 3079743 Ring Dowel plays a critical role in the alignment and structural integrity of heavy-duty truck engines. By ensuring precise positioning of engine components, this part contributes to improved engine performance, reliability, and longevity. Proper installation and maintenance of the ring dowel are essential to maximize its benefits and ensure the efficient operation of the engine.