3090126
O Ring Seal
Cummins®

Introduction

The Cummins 3090126 O Ring Seal is a critical component designed for use in commercial trucks. Its primary function is to ensure a secure seal in various applications within the truck’s systems, preventing leaks and maintaining system integrity. This seal is essential for the efficient operation of the truck, particularly within the engine and other critical systems.

Basic Concepts of O Ring Seals

An O Ring Seal is a type of gasket with a circular cross-section designed to create a seal between two or more parts, typically in dynamic or static applications. When compressed between flanges or in a groove, the O Ring deforms slightly, creating a barrier that prevents the passage of fluids or gases. This makes O Ring Seals widely used in mechanical systems for their reliability and effectiveness in sealing applications ¹.

Role of the 3090126 O Ring Seal in Truck Operation

The Cummins 3090126 O Ring Seal ensures that seals are maintained in various parts of the engine or other systems. It is typically placed in grooves or between mating surfaces where it is required to prevent leaks of fluids such as oil, coolant, or fuel. Its function is to provide a reliable seal under various operating conditions, contributing to the overall efficiency and reliability of the truck’s systems ².

Key Features

The Cummins 3090126 O Ring Seal is characterized by several key features that enhance its performance. These include its material composition, which is designed to withstand the pressures and temperatures encountered in truck engines. The seal is also engineered for durability, ensuring long-term performance even under demanding conditions. Additionally, its design specifications are tailored to provide an optimal seal, reducing the risk of leaks and improving system efficiency.

Benefits

The use of the Cummins 3090126 O Ring Seal offers several benefits. It provides improved sealing efficiency, which is crucial for maintaining the integrity of the truck’s systems. The seal’s durability ensures that it can withstand the rigors of commercial truck operation, contributing to its longevity. Furthermore, by ensuring effective seals, the 3090126 O Ring Seal plays a role in enhancing overall engine performance and reliability.

Troubleshooting and Maintenance

Common issues associated with O Ring Seals include wear, deformation, and failure due to exposure to extreme conditions or incompatible fluids. Troubleshooting these problems involves inspecting the seal for signs of damage or wear and ensuring that it is correctly installed. Maintenance practices to ensure the longevity and effectiveness of the Cummins 3090126 O Ring Seal include regular inspection and replacement as needed, as well as ensuring that the seal is compatible with the fluids and operating conditions it will encounter ³.

Compatibility with Engine Models

The Cummins O Ring Seal part number 3090126 is designed to fit a variety of Cummins engine models, ensuring a secure seal in critical areas. This O Ring is commonly used in applications where a tight seal is necessary to prevent leaks and maintain system integrity. Below is a detailed description of the engines with which this O Ring is compatible:

B Series Engines

• B4.5 CM2350 B129B
• B4.5 CM2350 B104
• ISB4.5 CM2350 B104

D Series Engines

• D4.0 CM2620 D103B
• ISD4.5 CM2220 D108

F Series Engines

• F2.8 CM2620 F135B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

ISB/ISD Series Engines

• ISB/ISD4.5 CM2150 B119
• ISB3.9 CM2220 B107
• ISB4.5 CM2350 B104
• ISB6.7 G CM2180 B118

ISF Series Engines

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• ISF4.5 CM2220 F123

ISBE Series Engines

• ISBE CM800
• ISBE4 CM850

ISZ Series Engines

• ISZ13 CM2150 Z105

K Series Engines

• K19

This O Ring is engineered to provide a reliable seal in various engine configurations, ensuring optimal performance and longevity. It is essential to verify the specific application and engine requirements when installing this O Ring to ensure compatibility and proper function.

Role of Part 3090126 O Ring Seal in Engine Systems

The O Ring Seal, part number 3090126, is integral to maintaining the integrity and efficiency of various engine systems. Its application spans across multiple components, ensuring optimal performance and longevity.

Air Control Valve and Air Crossover Connection

In the air control valve and air crossover connection, the O Ring Seal prevents air leaks, ensuring that the air-fuel mixture is precisely controlled. This results in improved engine efficiency and reduced emissions.

Coolant Heater Starting Aid

For the coolant heater starting aid, the O Ring Seal is essential in maintaining the seal around the heating element. This ensures that the coolant is effectively heated, facilitating easier engine starts in cold conditions.

Fuel Control Module and Fuel Pump

Within the fuel control module and fuel pump, the O Ring Seal plays a significant role in preventing fuel leaks. This not only ensures the safety of the engine system but also maintains the correct fuel pressure for efficient combustion.

Gasket Coupling Kits (2008 and 2009)

In both the gasket coupling 2008 kit and the gasket coupling 2009 kit, the O Ring Seal is used to create a tight seal between components. This prevents any fluid or gas leakage, ensuring the system operates under the correct pressure and temperature conditions.

Lower and Upper Engine Gasket Kits

The lower and upper engine gasket kits utilize the O Ring Seal to ensure that all gaskets are properly sealed. This is vital for maintaining the engine’s compression and preventing any coolant or oil leaks.

Lubricating Oil Filter and Lubricating Oil Filter Assembly

In the lubricating oil filter and lubricating oil filter assembly, the O Ring Seal ensures that oil flows smoothly without any leaks. This is essential for maintaining the lubrication of moving parts and preventing engine wear.

Turbocharger and Turbocharger Gasket Kit

For the turbocharger and turbocharger gasket kit, the O Ring Seal is used to maintain the seal around the turbocharger’s components. This ensures that the turbocharger operates efficiently, providing the engine with the necessary boost.

XPI JV System Cummins HD

In the XPI JV System Cummins HD, the O Ring Seal is employed to ensure that all high-pressure fuel lines and components are properly sealed. This is crucial for maintaining the system’s high-pressure integrity and ensuring efficient fuel delivery.

Service Coupling Assemblies (2008 and 2009)

The service coupling 2008 assembly and service coupling 2009 assembly rely on the O Ring Seal to maintain the seal between service points. This ensures that any maintenance or service operations can be performed without fluid or gas leakage.

Short Block Kit and Upfit Kit

In the short block kit and upfit kit, the O Ring Seal is used in various applications to ensure that all components are properly sealed. This is important for maintaining the engine’s overall integrity and performance.

Conclusion

The Cummins 3090126 O Ring Seal is a versatile component that enhances the functionality and reliability of numerous engine systems. Its proper installation and maintenance are key to ensuring the engine operates at peak performance.