4894721
Sealing Washer
Cummins®

The 4894721 Sealing Washer is a component manufactured by Cummins, a well-established name in the automotive industry, particularly known for its diesel engines and related components. This Cummins part is designed for use in commercial trucks, where it plays a role in maintaining the integrity of various systems by preventing leaks and ensuring proper pressure maintenance. Sealing washers are fundamental in mechanical systems, providing a barrier that helps in the efficient operation of fluid and gas systems within vehicles.

Basic Concepts of Sealing Washers

Sealing washers are mechanical components used to create a seal between two or more parts. Their general function is to prevent the leakage of fluids or gases and to maintain system pressure. They are placed between mating surfaces and, when tightened, compress to fill any irregularities, creating a tight seal. This is vital in systems where fluid or gas transfer occurs, as it ensures that the system operates efficiently without loss of pressure or contamination ¹.

Purpose of the 4894721 Sealing Washer

The 4894721 Sealing Washer is specifically designed to aid in the sealing process within the systems of commercial trucks. It is used in areas where fluid or gas transfer is critical, ensuring that these systems operate without leaks. By providing a reliable seal, it contributes to the overall efficiency and reliability of the truck’s systems, helping to maintain performance and reduce the risk of system failure due to leaks.

Key Features

The 4894721 Sealing Washer is characterized by its durable design and material composition, which are chosen for their ability to withstand the harsh conditions found in commercial truck environments. It is made from materials that offer resistance to wear, corrosion, and high temperatures, ensuring longevity and reliable performance. Its design may include features that enhance its sealing capabilities, such as a specific shape or texture that allows for better compression and sealing against mating surfaces ².

Benefits

Using the 4894721 Sealing Washer offers several advantages. It contributes to improved system efficiency by ensuring that fluids or gases are transferred without loss, which can enhance the overall performance of the truck. Additionally, its reliable sealing capability reduces the need for frequent maintenance, as it helps prevent leaks that could lead to system downtime. The enhanced reliability of the truck’s components due to the use of this sealing washer can lead to longer operational life and reduced repair costs.

Installation and Usage

Proper installation of the 4894721 Sealing Washer is crucial for its effective function. It should be installed according to the manufacturer’s guidelines, which may include specific preparatory steps and the use of certain tools to ensure a proper fit and seal. Its usage is widespread in various truck systems where sealing is required, and careful attention to installation details can ensure its effectiveness in these applications.

Troubleshooting and Maintenance

Common issues with sealing washers include wear, damage, or failure to create a proper seal, which can lead to leaks. Regular inspection and maintenance can help identify these issues early, allowing for timely replacement and continued system integrity. When replacing a sealing washer, it is important to use a part that meets the original specifications to ensure compatibility and performance. Signs of a failing washer may include leaks, system pressure loss, or unusual noises from the affected system.

Cummins: Manufacturer Overview

Cummins Inc. has a long-standing reputation in the automotive industry, particularly for its diesel engines and components. The company is known for its commitment to quality and innovation, which is reflected in its product line, including the 4894721 Sealing Washer. Cummins’ focus on manufacturing excellence ensures that its components are reliable, durable, and designed to meet the demanding requirements of commercial truck applications.

Cummins Sealing Washer 4894721 Compatibility

The Cummins Sealing Washer part number 4894721 is designed to fit a variety of Cummins engines, ensuring a secure seal in various applications. Here is a detailed look at the engines it is compatible with:

B6.7 Series

• B6.7 CM2670
• B6.7S

ISB Series

• ISB CM2150
• ISB CM850
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB4.5 CM2350 B104
• ISB5.9 CM2880 B110
• ISB6.7 CM2250

ISBE Series

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

ISV (Nissan)

• ISV (Nissan)

L8.9 Series

• L8.9 CM2670 L134C

QSB Series

• QSB4.5 CM850 (CM2850)
• QSB5.9 CM2880 B115
• QSB6.7 CM2250
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

This sealing washer is engineered to provide a reliable seal in various engine configurations, ensuring optimal performance and longevity. It is crucial to verify the compatibility of this part with the specific engine model to ensure proper fit and function.

Role of Part 4894721 Sealing Washer in Engine Systems

The 4894721 Sealing Washer is a component in maintaining the integrity and efficiency of various engine systems. Its primary function is to ensure a tight seal in connections and joints, preventing leaks and maintaining pressure within the system.

Fuel System Integration

In the fuel system, the 4894721 Sealing Washer is utilized in several key areas. It is commonly found in the fuel filter plumbing, where it seals connections between the fuel filter and the fuel filter head. This ensures that fuel flows smoothly without any leaks, which is vital for the consistent operation of the fuel injection pump. Additionally, it is used in the fuel pump assembly to seal the connections at the fuel inlet and fuel connector adapter, ensuring that the fuel supply remains uncontaminated and under the correct pressure.

Turbocharger and Oil Supply

The Sealing Washer also plays a significant role in the turbocharger system. It is employed in the turbocharger oil supply tube to seal the connections, ensuring that oil flows efficiently to lubricate the turbocharger bearings. This is important for the longevity and performance of the turbocharger. Furthermore, in the turbocharger kit, the washer seals the joints in the plumbing to prevent oil leaks, which could lead to decreased turbocharger efficiency and potential engine damage.

Catalytic Converter and Filter Systems

In the emissions control system, the 4894721 Sealing Washer is used in the catalytic converter and filter assemblies. It ensures that the connections between the converter and the filter bracket head are sealed, preventing exhaust leaks that could affect the performance of the catalytic converter and increase emissions.

Engine Control Module and Plumbing

The washer is also integral in the engine control module (ECM) plumbing. It seals the connections in the fuel and oil systems that are monitored and controlled by the ECM. This ensures that the ECM receives accurate data from the sensors, allowing for precise control of fuel injection and other engine parameters.

Gasket Sets and Fittings

In the upper engine gasket set and lower engine gasket kit, the 4894721 Sealing Washer is used to seal various fittings and joints. This is essential for maintaining the integrity of the engine block and ensuring that there are no leaks between the gasket layers.

Quick Disconnect Connectors

Finally, the washer is used in quick disconnect connectors throughout the fuel and oil systems. These connectors allow for easy maintenance and servicing of the engine, and the sealing washer ensures that they form a secure seal when reconnected.

Overall, the 4894721 Sealing Washer is a versatile component that enhances the reliability and performance of various engine systems by ensuring secure, leak-free connections.

Conclusion

The 4894721 Sealing Washer by Cummins is a critical component in the maintenance and efficiency of commercial truck engine systems. Its role in preventing leaks and maintaining system pressure is essential for the reliable operation of various engine components, including the fuel system, turbocharger, catalytic converter, and engine control module. Proper installation and regular maintenance of this part are crucial for ensuring the longevity and performance of the engine systems it serves.