128086
O Ring Seal
Cummins®

The 128086 O Ring Seal, manufactured by Cummins, is a component used in commercial truck maintenance and operation. Cummins, a well-established name in the industry, produces this seal to ensure the reliability and efficiency of truck systems. The O Ring Seal is integral to maintaining the integrity of various systems within commercial trucks, contributing to their overall performance and longevity.

Basic Concepts of O Ring Seals

O Ring Seals are circular elastomeric components designed to create a seal between two or more mating surfaces. They function by being compressed during assembly, which allows them to fill any irregularities on the sealing surfaces and create a barrier against the passage of fluids or gases. O Ring Seals are widely used in mechanical systems due to their simplicity, effectiveness, and versatility in various applications ¹.

Role of the 128086 O Ring Seal in Truck Operation

This Cummins part plays a specific role within the truck’s systems by ensuring the integrity and performance of the components it is installed in. It is typically placed in areas where fluid or gas sealing is required to prevent leaks and maintain system pressure. By doing so, it contributes to the efficient operation of the truck’s systems, ensuring that fluids and gases remain contained within their intended pathways.

Key Features of the 128086 O Ring Seal

The 128086 O Ring Seal is designed with several unique characteristics that enhance its performance and durability in heavy-duty truck applications. These features include a specific durometer rating for optimal elasticity and sealing capability, resistance to a wide range of temperatures and chemicals encountered in truck operations, and a precise dimensional tolerance to ensure a proper fit and effective seal. These design elements contribute to the seal’s ability to withstand the demanding conditions of commercial truck use ².

Benefits of Using the 128086 O Ring Seal

Utilizing the 128086 O Ring Seal offers several advantages, including improved system reliability through effective sealing, reduced maintenance needs due to its durability and resistance to wear, and enhanced overall truck performance by ensuring that systems operate within their designed parameters. These benefits contribute to the efficiency and longevity of the truck, making this part a valuable component in commercial truck maintenance.

Installation and Maintenance Guidelines

Proper installation of the 128086 O Ring Seal is crucial for its effectiveness and longevity. Cummins recommends specific tools and procedures for installation to ensure the seal is correctly positioned and compressed. Maintenance tips include regular inspection for signs of wear or damage, proper cleaning before reinstallation, and replacement according to the manufacturer’s guidelines or when signs of degradation are observed. Following these guidelines helps ensure the seal’s optimal performance and longevity.

Troubleshooting Common Issues

Common issues with O Ring Seals in truck applications include leaks, which can be caused by improper installation, wear and tear, or exposure to incompatible fluids or temperatures. Troubleshooting these issues involves a systematic approach to identify the root cause, which may include checking the seal for physical damage, ensuring correct installation, and verifying compatibility with the system’s operating conditions. Addressing these issues promptly can prevent more significant problems and maintain the efficiency of the truck’s systems.

Cummins: A Brief 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 reputation for quality, innovation, and reliability in the commercial truck industry. The company’s commitment to excellence is reflected in its wide range of products, including the 128086 O Ring Seal, which is designed to meet the high standards of performance and durability required in heavy-duty truck applications.

Cummins O Ring Seal Part 128086 Compatibility

The Cummins O Ring Seal part number 128086 is a crucial component designed to fit seamlessly with a variety of Cummins engines. This O Ring Seal is engineered to provide a reliable seal in various applications, ensuring that the engine operates efficiently and safely. Below is a detailed breakdown of the engines with which this O Ring Seal is compatible:

Cummins B Series Engines

• 4B3.9
• 6B5.9

Cummins C Series Engines

• 6C8.3
• C8.3 G

Cummins ISB Engines

• ISB CM550

Cummins ISC Engines

• ISC CM554

Cummins ISM Engines

• ISM CM570

Cummins ISX Engines

• ISX CM570

Cummins K Series Engines

• K19
• K38
• K50

Cummins L10 Engines

• L10 CELECT
• L10 GAS
• L10 MECHANICAL

Cummins M11 Engines

• M11 CELECT
• M11 CELECT PLUS
• M11 MECHANICAL

Cummins N14 Engines

• N14 CELECT
• N14 CELECT PLUS
• N14 MECHANICAL

Cummins NH/NT Engines

• NH/NT 855

Cummins QSK Engines

• QSK19 CM500
• QSK45 CM500
• QSK60 CM500

This O Ring Seal is designed to fit snugly within the specified engine models, ensuring that it provides an effective barrier against leaks and maintains the integrity of the engine’s internal systems. Its compatibility across a wide range of Cummins engines underscores its versatility and importance in maintaining engine performance.

Role of Part 128086 O Ring Seal in Various Engine Systems

The Part 128086 O Ring Seal is a fundamental component in ensuring the efficient and reliable operation of various engine systems. Its primary function is to create a secure seal between mating parts, preventing leaks and maintaining system integrity.

Air Compressor Systems

In air compressor systems, the O Ring Seal is utilized in several key areas:

• Air 1-Cylinder Compressor: The O Ring Seal is employed in the compressor head and crankcase to prevent air leakage, ensuring optimal compression and efficiency.
• Air Compressor: Within the main body of the air compressor, the O Ring Seal is crucial for maintaining pressure and preventing air loss.
• Air Compressor Conversion Kit: When converting an existing compressor, the O Ring Seal ensures a tight fit between new and old components, facilitating smooth operation.
• Air Compressor Crankcase: Seals are used here to prevent oil leaks, which could otherwise lead to contamination of the compressed air.
• Air Compressor Drive: Ensures that the drive mechanism operates without lubricant leakage, maintaining efficiency and longevity.
• Compressor Air Kit: Used in various connection points to ensure airtight seals, enhancing the overall performance of the kit.
• Compressor Head: Seals are vital in the head to prevent air escape, ensuring the compressor operates at peak efficiency.
• Compressor Head Overhaul Kit: During overhauls, O Ring Seals are replaced to restore system integrity and prevent leaks.
• Compressor Super Uprate Kit: Enhances the compressor’s capability by ensuring all upgraded components are sealed properly.
• Compressor Valve Repair Kit: Seals are used in valve components to maintain pressure and prevent air leakage.
• Compressor Valve Replenishing Kit: Ensures that replenished valves function without leaks, maintaining system pressure.
• Head Air Compressor: Seals are critical in the head to prevent air and oil leaks, ensuring efficient compression.

Fuel and Vacuum Systems

• Fuel Pump: O Ring Seals are used in the fuel pump to prevent fuel leaks, ensuring safe and efficient operation.
• Vacuum Pump Crankcase: Seals are employed to prevent oil leaks, maintaining the vacuum integrity and efficiency of the pump.

Overhaul and Repair Kits

• Overhaul Kit: During engine overhauls, O Ring Seals are replaced to ensure all components are securely sealed, preventing leaks and maintaining system pressure.
• Repair Kit Valve: Seals are used in valve repair kits to ensure valves operate without leaks, maintaining system efficiency.

Cylinder and Piston Systems

• Cylinder Head: O Ring Seals are used to prevent gas leaks between the cylinder head and engine block, ensuring efficient combustion.
• Engine Piston Kit: Seals are employed in piston components to prevent oil and gas leaks, maintaining engine efficiency.

Conversion and Drive Systems

• Conversion Kit: Ensures that new components integrate seamlessly with existing systems without leaks.
• Drive: Seals are used in drive mechanisms to prevent lubricant leakage, ensuring smooth operation and longevity.

Specialized Assemblies

• PDC BM Assembly: Seals are critical in this assembly to prevent leaks and maintain system integrity.
• PDC Kit: Ensures that all components in the kit are securely sealed, preventing leaks and enhancing performance.

The Part 128086 O Ring Seal plays a significant role in maintaining the integrity and efficiency of various engine systems by providing essential seals that prevent leaks and ensure optimal operation.

Conclusion

The 128086 O Ring Seal is a critical component in the maintenance and operation of commercial trucks, particularly those equipped with Cummins engines. Its design and features ensure reliable sealing across a variety of applications, contributing to the efficiency, reliability, and longevity of truck systems. Proper installation, maintenance, and troubleshooting are essential to maximize the benefits of this Cummins part, ensuring that commercial trucks operate at their best.