3931604
Connection Gasket
Cummins®

The 3931604 Connection Gasket, a component manufactured by Cummins, is designed to facilitate sealing in various mechanical systems within commercial trucks. Cummins is recognized for its high-quality engine components and systems, offering reliable solutions for the demanding requirements of commercial trucking.

Basic Concepts of Connection Gaskets

Connection gaskets are specialized seals used in mechanical systems to prevent leaks between mating surfaces. They maintain the integrity of fluid and gas pathways within engines and other machinery by filling microscopic irregularities on mating surfaces, creating a tight seal essential for efficient operation ¹.

Purpose of the 3931604 Connection Gasket

This Cummins part is designed to ensure a secure seal in the connections within a truck’s engine or other systems. It is often placed in areas where two or more components meet, such as between the engine block and the cylinder head. The gasket prevents leaks of coolant, oil, or other fluids, contributing to the overall efficiency and reliability of the engine ².

Key Features

The 3931604 Connection Gasket is crafted from materials that offer excellent resistance to heat, pressure, and chemical exposure, ensuring durability and performance. Its design incorporates precise contours that match the surfaces it seals against, enhancing its sealing capabilities in high-stress environments typical of commercial truck operations ³.

Benefits

Utilizing this part offers several advantages, including enhanced sealing efficiency, which helps maintain optimal engine performance. Its durable construction contributes to longevity, reducing the frequency of replacements and maintenance. Additionally, by ensuring a reliable seal, this gasket helps prevent leaks that could lead to engine damage or inefficiencies.

Installation Process

Proper installation of the 3931604 Connection Gasket is vital for its effectiveness. The process involves cleaning the mating surfaces to remove any debris or old gasket material, ensuring a smooth and even application. Tools such as gasket scrapers and brushes may be required. Careful alignment and pressing into place without damaging the gasket are best practices to ensure a secure fit.

Troubleshooting Common Issues

Common issues with connection gaskets include leaks or failures, often due to improper installation, wear, or damage. Troubleshooting steps may involve inspecting the gasket and mating surfaces for signs of wear or damage, ensuring proper alignment and compression, and verifying that all mating surfaces are clean and free of contaminants.

Maintenance Tips

Regular maintenance of the 3931604 Connection Gasket includes periodic inspections for signs of wear, damage, or leaks. Cleaning the gasket and mating surfaces as part of routine engine maintenance can help prevent issues. Replacement should be considered if there are signs of significant wear or if leaks are detected, to maintain engine efficiency and reliability.

Cummins Overview

Cummins has a long-standing reputation in the commercial truck industry for manufacturing high-quality engine components and systems. Their product range includes a variety of parts designed to meet the rigorous demands of commercial trucking, ensuring reliability, performance, and durability in their applications.

Cummins Engine Part 3931604: Connection Gasket Compatibility

The Cummins Connection Gasket part number 3931604 is designed to ensure a secure seal between various engine parts. This gasket is compatible with a range of Cummins engines, providing a reliable seal to prevent leaks and maintain engine integrity. Below is a detailed overview of the engines with which this gasket is compatible:

Compatible Engines

• 4B3.9
• 6B5.9
• 6C8.3
• B5.9 G
• B6.7S
• ISB CM550
• ISB CM850
• ISB3.9 CM2220 B107
• QSB5.9 44 CM550
• QSB5.9 CM550

Grouping of Compatible Engines

The engines listed can be grouped based on their model series and specifications to provide a clearer understanding of the gasket’s compatibility:

• B Series Engines

  • B5.9 G
  • B6.7S

• ISB Series Engines

  • ISB CM550
  • ISB CM850
  • ISB3.9 CM2220 B107

• QSB Series Engines

  • QSB5.9 44 CM550
  • QSB5.9 CM550

• Other Models

  • 4B3.9
  • 6B5.9
  • 6C8.3

By grouping the engines in this manner, it becomes evident that the 3931604 Connection Gasket is versatile and can be used across multiple Cummins engine models, ensuring that technicians and operators have a reliable gasket option for a wide range of engine types.

Role of Part 3931604 Connection Gasket in Engine Systems

The 3931604 Connection Gasket is integral to ensuring the proper sealing and connection of various components within engine systems. Its application spans across multiple assemblies, contributing to the overall efficiency and reliability of the engine.

Air Intake System

In the air intake system, the Connection Gasket is utilized to seal the connection between the air intake and the turbocharger. This ensures that the air flow is unimpeded and that there are no leaks, which could otherwise affect engine performance. Additionally, it is employed in the air intake heater and air intake kit to maintain a secure and leak-free connection, crucial for the effective operation of these components.

Aftercooler Conversion Kit

When integrating an aftercooler conversion kit, the Connection Gasket plays a significant role in sealing the connections within the kit. This is essential for maintaining the pressure and temperature differentials required for efficient aftercooling, thereby enhancing the overall performance of the engine.

Air Heater Starting Aid

In the context of the air heater starting aid, the Connection Gasket ensures that the system remains sealed during operation. This is particularly important during cold starts, where any leaks could significantly impact the effectiveness of the starting aid.

Lower and Upper Engine Gasket Sets

The Connection Gasket is also a component of the lower and upper engine gasket sets. Here, it ensures that various engine components are properly sealed, preventing any unwanted air or fluid leaks that could lead to engine inefficiency or damage.

Turbocharger Arrangement

In turbocharger arrangements, the Connection Gasket is used to seal the connections at the turbocharger location. This is vital for maintaining the integrity of the turbo system, ensuring that the compressed air is delivered efficiently to the engine.

Solenoid and Overhaul Kits

In solenoid kits and overhaul kits, the Connection Gasket is used to seal various connections, ensuring that the systems operate within their designed parameters. This is particularly important in overhaul kits, where the gasket contributes to the restoration of the engine to its optimal condition.

Intake Connection Mounting

Finally, in the intake connection mounting, the Connection Gasket ensures a secure and leak-free connection. This is essential for maintaining the integrity of the air intake system, ensuring that the engine receives the correct air-fuel mixture for optimal performance.

Conclusion

The 3931604 Connection Gasket plays a crucial role in the sealing and connection of various components within engine systems, contributing to the overall efficiency and reliability of the engine. Its compatibility with a wide range of Cummins engines, coupled with its durable construction and precise design, makes it a reliable choice for maintaining the integrity of engine systems in commercial trucks.