4934749
O-Ring Seal
Cummins®

The 4934749 O-Ring Seal, manufactured by Cummins, is a component used in commercial trucks. It is part of the broader category of seals that play a role in maintaining system integrity across various applications. Seals are vital in preventing leaks and ensuring the efficient operation of mechanical systems ¹.

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 made from elastomers, these seals function by deforming under compression to fill the gap between mating surfaces. This deformation allows the O-Ring to create a barrier that prevents the passage of fluids or gases. O-Rings are used in both dynamic applications, where there is relative motion between the parts, and static applications, where the parts remain stationary relative to each other ².

Role of the 4934749 O-Ring Seal in Truck Operation

This Cummins part plays a role in the operation of a truck by ensuring the integrity of seals in specific systems or components. Its function contributes to the overall functionality and efficiency of the truck by preventing leaks and maintaining system pressure. The specific systems or components it is associated with can vary, but its role is fundamental in ensuring that these systems operate as intended.

Key Features of the 4934749 O-Ring Seal

The 4934749 is characterized by its material composition, which is selected for its ability to withstand the operating conditions it will encounter. Its size is tailored to fit specific applications, ensuring a proper seal is achieved. Unique design elements may include specific durometer ratings or surface treatments that enhance its performance and durability in demanding environments.

Benefits of Using the 4934749 O-Ring Seal

Utilizing this part offers several advantages, including improved system reliability and enhanced performance. Its durability and effectiveness can lead to potential cost savings over time, as it reduces the need for frequent replacements and repairs. The seal’s ability to maintain system integrity under various conditions contributes to the overall efficiency of the truck ³.

Installation Considerations

When installing the 4934749, it is important to prepare the sealing surface to ensure a clean and smooth contact area. Proper handling of the O-Ring is crucial to avoid damage that could compromise its sealing ability. Ensuring correct fitment is also vital, as an improperly fitted O-Ring may not create an effective seal, leading to leaks or system failure.

Troubleshooting Common Issues

Common problems associated with O-Ring Seals include leaks or failures, which can arise from improper installation, degradation of the seal material, or excessive wear. Troubleshooting these issues involves inspecting the seal and its mating surfaces for signs of damage or misalignment, and addressing any identified problems to restore system integrity.

Maintenance and Replacement

Maintenance of the 4934749 involves regular inspection for signs of wear or damage. Replacement procedures should be followed to ensure the new seal is correctly installed and functions as intended. Adhering to recommended inspection intervals and replacement guidelines helps maintain system reliability and performance.

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 of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. Its commitment to quality and innovation is evident in its wide range of products, which are designed to meet the demanding requirements of commercial applications.

Cummins O-Ring Seal 4934749 Compatibility

The Cummins O-Ring Seal part number 4934749 is designed to fit a variety of Cummins engines, ensuring a reliable seal in critical areas of the engine. Here is a detailed overview of the engines with which this O-ring seal is compatible:

B4.5 Series Engines

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

D4.0 Series Engines

• D4.0 CM2620 D103B

F3.8 Series Engines

• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109
• QSF3.8 CM2350 F107

F4.5 Series Engines

• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

ISF3.8 Series Engines

• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109

ISF4.5 Series Engines

• ISF4.5 CM2220 F123

QSF3.8 Series Engines

• QSF3.8 CM2350 F107
• QSF3.8 CM2880 F112

This O-ring seal is engineered to provide a tight seal in various engine applications, ensuring that the engine operates efficiently and reliably. It is crucial to use the correct O-ring seal for each specific engine model to maintain optimal performance and prevent leaks.

Role of Part 4934749 O-Ring Seal in Engine Systems

The part 4934749 O-Ring Seal is instrumental in ensuring the integrity and efficiency of various engine systems. Its application spans across multiple components, each playing a significant role in the overall performance and reliability of the engine.

Connection Points

At connection points within the engine, the O-Ring Seal provides a tight and reliable seal. This is essential for preventing leaks and ensuring that fluids and gases are directed accurately through the engine’s pathways. The seal’s ability to conform to irregular surfaces ensures a consistent seal, even under varying temperatures and pressures.

Water Inlet

In the water inlet system, the O-Ring Seal is used to secure the connection between the water inlet and the engine block. This seal is vital for maintaining the coolant flow, which is necessary for regulating engine temperature. A properly sealed water inlet prevents coolant loss and ensures efficient heat dissipation.

Cooler Systems

Within cooler systems, such as the engine oil cooler and lubricating oil cooler module, the O-Ring Seal plays a key role in maintaining the seal between the cooler and its connections. This ensures that the cooling fluid circulates effectively, helping to maintain optimal oil temperature and viscosity. Proper sealing here prevents contamination and ensures the longevity of the cooling system components.

Engine Oil System

In the engine oil system, the O-Ring Seal is employed at various junctures to ensure that oil remains contained within its pathways. This is important for lubrication, reducing friction, and dissipating heat. A reliable seal here prevents oil leaks, which could lead to decreased lubrication efficiency and potential engine damage.

Lower Engine Gasket Kit and Set

The lower engine gasket kit and set often incorporate O-Ring Seals to ensure a robust seal between engine components. These seals are essential for preventing oil and coolant leaks, which could otherwise lead to engine inefficiencies and potential failures. The O-Ring’s flexibility allows it to adapt to the dynamic environment within the engine.

Water Bypass Tube

In the water bypass tube, the O-Ring Seal ensures that coolant flows correctly through the bypass system. This is important for maintaining consistent engine temperature, especially during cold starts. The seal prevents coolant from leaking out, ensuring that the bypass system functions as intended.

Overall, the part 4934749 O-Ring Seal is a fundamental component in various engine systems, providing the necessary seals to ensure fluid integrity, prevent leaks, and maintain efficient engine operation.

Conclusion

The 4934749 O-Ring Seal is a critical component in the maintenance and operation of commercial trucks, particularly those equipped with Cummins engines. Its role in preventing leaks, maintaining system pressure, and ensuring the efficient operation of various engine systems cannot be overstated. Proper installation, maintenance, and timely replacement of this part are essential for the continued reliability and performance of the vehicle. Cummins’ commitment to quality and innovation is reflected in the design and functionality of this O-Ring Seal, making it a valuable component in the broader context of vehicle dynamics and system integrity.