4067993
Ring Dowel
Cummins®

The Cummins 4067993 Ring Dowel is a specialized component designed for use in heavy-duty truck systems. Its purpose is to ensure precise alignment and secure positioning of various engine or transmission parts. This component is significant in maintaining the integrity and efficiency of the truck’s mechanical systems.

Basic Concepts of Ring Dowels

A ring dowel is a cylindrical pin used in mechanical assemblies to align and position components accurately. It operates by fitting into corresponding holes in mating parts, ensuring they are correctly aligned during assembly. This alignment is crucial for the proper functioning and durability of the mechanical system ¹.

Purpose of the 4067993 Ring Dowel

The 4067993 Ring Dowel plays a specific role in the operation of a truck by ensuring the accurate alignment of engine or transmission components. Its function is to maintain the correct spacing and orientation between parts, which is vital for the efficient operation of the system. This component helps in reducing wear and tear by ensuring that moving parts interact correctly ².

Key Features

The 4067993 Ring Dowel is characterized by several key features that enhance its performance. It is typically made from high-strength materials to withstand the rigors of heavy-duty applications. The design specifications include precise dimensions to ensure a perfect fit within the assembly. Additionally, it may have unique attributes such as a specific surface finish to improve alignment accuracy and durability ³.

Benefits

The advantages provided by the 4067993 Ring Dowel include improved alignment of components, which leads to enhanced durability and overall system efficiency. By ensuring that parts are correctly positioned, this component helps in reducing the likelihood of mechanical failures and extends the lifespan of the truck’s engine or transmission system.

Installation Process

Proper installation of the 4067993 Ring Dowel involves several steps to ensure correct placement and function. First, the mating surfaces should be cleaned to remove any debris. The dowel is then inserted into the designated hole, ensuring it fits snugly without forcing. Tools such as a press or alignment tool may be required to achieve the correct positioning. Once installed, the component should be checked for proper alignment before proceeding with the assembly.

Common Issues and Troubleshooting

Typical problems that may arise with the 4067993 Ring Dowel include misalignment or damage during installation. To address these issues, it is important to inspect the dowel and mating surfaces for any signs of wear or damage. If misalignment is detected, the dowel should be removed and reinserted, ensuring all surfaces are clean and free of debris. In cases of damage, replacement of the dowel may be necessary to maintain system integrity.

Maintenance Tips

Regular maintenance of the 4067993 Ring Dowel is important to ensure longevity and optimal performance. This includes periodic inspection for signs of wear or damage. If any issues are detected, the dowel should be replaced according to the manufacturer’s guidelines. Additionally, ensuring that mating surfaces remain clean and free of debris will help in maintaining the correct alignment and function of the component.

Role in Engine or Transmission System

The 4067993 Ring Dowel interacts with other components within the engine or transmission system by providing precise alignment and secure positioning. Its impact on the overall functionality and reliability of the truck is significant, as it helps in maintaining the correct operation of moving parts, thereby contributing to the efficiency and durability of the system.

Cummins Overview

Cummins Inc. is a well-established company with a rich history in the automotive industry, particularly known for its heavy-duty truck components. The company offers a wide range of products designed to meet the demanding requirements of commercial and industrial applications. Cummins is recognized for its commitment to quality and innovation, providing reliable and high-performance solutions for the automotive sector.

Ring Dowel Part 4067993 Compatibility with Cummins Engines

The Ring Dowel part number 4067993, manufactured by Cummins, is a critical component that fits into various Cummins engine models. This part is essential for maintaining the structural integrity and operational efficiency of the engine by ensuring proper alignment and function of the piston rings.

Compatible Engines

• 15N CM2380 M104B
• B4.5 RGT
• ISG11 CM2880 G108
• ISG12 CM2880 G107
• ISG12 G CMOH6.0 G111
• QSG12 CM2880 G112
• QSG12/X12 CM2350 G110
• QST30 CM2350 T101
• QST30 CM552
• X11 CM2670 X126B
• X12 CM2350 X119B
• X12 CM2670 X121B
• X12N CMMDG1 X143B
• X13 CM2670 X122B
• Z14 CM2670 Z103B

Grouping of Compatible Engines

The Ring Dowel part 4067993 is compatible with a diverse range of Cummins engines, which can be grouped based on their model series and specifications:

• Industrial and Marine Engines:

  • 15N CM2380 M104B
  • B4.5 RGT
  • ISG11 CM2880 G108
  • ISG12 CM2880 G107
  • ISG12 G CMOH6.0 G111
  • QSG12 CM2880 G112
  • QSG12/X12 CM2350 G110
  • QST30 CM2350 T101
  • QST30 CM552

• Heavy-Duty Engines:

  • X11 CM2670 X126B
  • X12 CM2350 X119B
  • X12 CM2670 X121B
  • X12N CMMDG1 X143B
  • X13 CM2670 X122B
  • Z14 CM2670 Z103B

Each of these engines, despite their differences in power output and application, relies on the Ring Dowel part 4067993 to ensure the piston rings operate smoothly and efficiently, thereby contributing to the overall performance and longevity of the engine.

Role of Part 4067993 Ring Dowel in Engine Systems

The part 4067993 Ring Dowel is instrumental in ensuring the precise alignment and secure fitting of various components within engine systems. Its application spans across multiple assemblies, contributing to the overall stability and efficiency of the engine.

Alternator Mounting and Support

In the alternator mounting system, the Ring Dowel ensures that the alternator is correctly positioned relative to the engine block. This alignment is essential for the efficient transfer of mechanical energy from the engine to the alternator, which in turn generates electrical power for the vehicle’s electrical systems. The alternator support structure benefits from the Ring Dowel by maintaining consistent spacing and alignment, reducing wear and enhancing durability.

Camshaft and Camshaft Gear

For the camshaft and camshaft gear, the Ring Dowel plays a significant role in maintaining the accurate timing between the camshaft and the crankshaft. This precision is vital for the proper opening and closing of the engine’s valves, directly influencing the engine’s performance and fuel efficiency. The secure fitting provided by the Ring Dowel ensures that the camshaft gear remains in the correct position, preventing timing issues that could lead to engine misfires or reduced power output.

Connecting Rod and Piston

Within the connecting rod and piston assembly, the Ring Dowel helps in aligning the connecting rod with the crankshaft journal. This alignment is crucial for the smooth operation of the piston within the cylinder, ensuring that the force generated by the combustion process is efficiently transferred to the crankshaft. Proper alignment reduces friction and wear on the components, contributing to the longevity of the engine.

Cylinder Block and Head Assemblies

In the cylinder block and cylinder head assemblies, the Ring Dowel ensures that these critical components are correctly mated. This precise alignment is necessary for the formation of effective combustion chambers and the sealing of the combustion gases. The cylinder top-level assembly head, in particular, relies on the Ring Dowel to maintain the integrity of the combustion process, directly impacting engine power and efficiency.

Lubricating and Oil Cooling Systems

The lubricating oil cooler, lubricating oil cooler module, and lubricating oil filter head all benefit from the Ring Dowel’s role in ensuring proper alignment and secure fitting. This is particularly important in maintaining the efficiency of the oil cooling and filtration processes, which are essential for keeping the engine operating within optimal temperature ranges and ensuring the longevity of engine components.

Rocker Lever and Support Assemblies

In the rocker lever and rocker lever support systems, the Ring Dowel ensures that the rocker arms are correctly positioned relative to the camshaft and valve stems. This precise alignment is necessary for the efficient transfer of motion from the camshaft to the valves, directly influencing the engine’s valve timing and overall performance. The rocker lever top-level assembly and rocker top-level assembly lever both rely on the Ring Dowel to maintain the necessary alignment and secure fitting, ensuring smooth and reliable valve operation.

Additional Components

The Ring Dowel also plays a role in the accurate alignment of the front gear cover, fuel pump, gear cover, oil cooler kit, performance parts, and refrigerant compressor. Each of these components relies on precise positioning to function correctly, and the Ring Dowel contributes to this by ensuring that they are securely and accurately fitted within the engine system.

Conclusion

The Cummins 4067993 Ring Dowel is a critical component in heavy-duty truck systems, ensuring precise alignment and secure positioning of engine and transmission parts. Its role in maintaining the integrity and efficiency of mechanical systems is significant, contributing to the durability and performance of the truck. Proper installation, maintenance, and understanding of its function are essential for optimal system operation.