4076420
O Ring Seal
Cummins®

Introduction

The Cummins 4076420 O Ring Seal is a critical component designed for use in commercial trucks. Its primary function is to provide a reliable seal in various truck systems, ensuring the integrity of fluid and gas containment within the engine and other essential systems. This seal is vital for maintaining the performance and efficiency of commercial trucks by preventing leaks and ensuring proper system operation.

Basic Concepts of O Ring Seals

An O Ring Seal is a type of gasket that forms a seal by being compressed within a groove. When pressure is applied, the O Ring deforms to fill the gap between mating surfaces, creating a barrier that prevents the escape of fluids or gases. O Rings are widely used in mechanical systems due to their simplicity, effectiveness, and versatility in various applications ¹.

Purpose of the 4076420 O Ring Seal in Truck Operations

The 4076420 O Ring Seal plays a specific role in the operation of commercial trucks by ensuring seals in systems where fluid or gas containment is necessary. This includes applications in fuel systems, hydraulic systems, and engine components. By providing a tight seal, the O Ring helps maintain system pressure, prevent leaks, and ensure the efficient operation of truck systems.

Key Features of the 4076420 O Ring Seal

The design and material characteristics of the 4076420 O Ring Seal contribute to its effectiveness and durability in truck applications. Made from high-quality elastomer materials, this O Ring is designed to withstand the harsh conditions found in commercial truck environments. Its precise dimensions ensure a proper fit within the designated grooves, and its material properties allow it to resist wear, tear, and environmental factors such as temperature variations and chemical exposure.

Benefits of Using the 4076420 O Ring Seal

The advantages provided by the 4076420 O Ring Seal include improved sealing performance, longevity, and resistance to various environmental factors. Its design ensures a reliable seal under pressure, reducing the risk of leaks and system failures. The durability of the material used in its construction allows it to withstand the rigors of commercial truck operations, providing long-term performance and reliability.

Installation Guidelines

Proper installation of the 4076420 O Ring Seal is crucial for ensuring optimal performance and longevity. The installation process involves carefully placing the O Ring into its designated groove, ensuring it is not twisted or damaged. It is important to clean the groove and surrounding areas to remove any debris that could compromise the seal. Once installed, the system should be tested for leaks to confirm the seal’s integrity.

Troubleshooting Common Issues

Common problems associated with O Ring Seals include leaks, wear, and failure due to environmental factors. Troubleshooting steps may involve inspecting the O Ring for signs of damage or wear, ensuring it is properly seated in its groove, and checking for any debris or contaminants that could affect its performance. In some cases, replacing the O Ring may be necessary to restore system integrity.

Maintenance Tips

Regular maintenance of the 4076420 O Ring Seal can prolong its service life and ensure continued reliable performance. This includes periodic inspection for signs of wear or damage, cleaning the seal and its groove to remove any contaminants, and replacing the seal as part of routine maintenance or when signs of failure are detected. Adhering to manufacturer recommendations for maintenance intervals can help prevent unexpected failures and ensure the seal continues to perform effectively.

Cummins Corporation 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 commitment to quality, Cummins serves customers in approximately 190 countries and territories through a network of company-owned and independent distributor facilities and dealerships. The company’s product range includes diesel and natural gas engines, as well as related technologies that enhance engine performance and efficiency. Cummins is dedicated to advancing the technologies that power our world, with a focus on sustainability, efficiency, and reliability in all its offerings.

Cummins O Ring Seal 4076420 Compatibility

The Cummins O Ring Seal part number 4076420 is a crucial component used in various Cummins engines, ensuring a tight seal to prevent leaks and maintain engine efficiency. This seal is designed to fit a range of Cummins engines, each identified by distinct model codes. Here’s a detailed look at the engines this seal is compatible with:

B Series Engines

• B4.5 CM2350 B129B
• B5.6 CM2670 B152B
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C

F Series Engines

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

ISB Series Engines

• ISB (Chrysler)
• ISB CM2150
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107
• ISB4.5 CM2350 B104
• ISB5.9 CM2880 B110
• ISB5.9 CM2880 B127
• ISB5.9 CM2880 B140
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

This O Ring Seal is engineered to fit seamlessly into the specified engines, providing a reliable seal that is essential for maintaining the integrity of the engine’s systems. Its compatibility across a wide range of engine models underscores its versatility and importance in ensuring engine performance and longevity.

Role of Part 4076420 O Ring Seal in Engine Systems

The part 4076420 O Ring Seal is instrumental in ensuring the integrity and efficiency of various engine systems. It is employed in several key areas to maintain proper sealing and prevent leaks, which is essential for optimal engine performance.

Air Cleaner and Air Inlet Tube

In the air cleaner and air inlet tube systems, the O Ring Seal is used to create a tight seal between components. This ensures that the air entering the engine is clean and free from contaminants, which is vital for combustion efficiency and engine longevity.

Electronic Control Module (ECM) Wiring Harness and Engine Control Wiring Harness

For the ECM wiring harness and engine control wiring harness, the O Ring Seal is utilized to seal connections and junctions. This prevents moisture and debris from interfering with electrical signals, ensuring reliable communication between the ECM and various engine sensors and actuators.

Exhaust Gas Recirculation (EGR) Arrangement

In the EGR arrangement, the O Ring Seal plays a significant role in sealing the connections between the EGR valve, pipes, and the intake manifold. This ensures that recirculated exhaust gases are properly mixed with the incoming air, reducing emissions and improving fuel efficiency.

Long Block Kit and Lower Engine Gasket Kit

Within the long block kit and lower engine gasket kit, the O Ring Seal is used to seal critical components such as oil passages, coolant lines, and sensor ports. This maintains the integrity of the lubrication and cooling systems, which are essential for engine operation and durability.

Pressure Temperature Sensor and Pressure Temperature Sensor Arrangement

For the pressure temperature sensor and its arrangement, the O Ring Seal ensures that the sensor is properly sealed to the engine block or intake manifold. This prevents any leaks that could affect the accuracy of pressure and temperature readings, which are crucial for engine management.

Service Kit

In a service kit, the O Ring Seal is often included to replace worn or damaged seals during maintenance procedures. This ensures that all systems remain sealed and functional, contributing to the overall reliability and performance of the engine.

Conclusion

The Cummins 4076420 O Ring Seal is a vital component in the maintenance and operation of commercial trucks and Cummins engines. Its role in ensuring reliable seals across various systems contributes to the overall efficiency, performance, and longevity of the engines it serves. Proper installation, maintenance, and understanding of its applications are essential for maximizing the benefits of this Cummins part.