4936171
O-Ring Seal
Cummins®

Introduction

The Cummins 4936171 O-Ring Seal is a component designed for use in commercial truck applications. Its purpose is to ensure the integrity of various systems within the truck by providing a reliable seal. This seal helps maintain the efficiency and performance of the truck’s systems by preventing leaks and ensuring that fluids and gases remain contained within their designated pathways.

Basic Concepts of O-Ring Seals

An O-Ring Seal is a type of gasket made in the shape of a torus; it is a loop of elastomer with a round cross-section designed to be seated in a groove and compressed during assembly between two or more parts, creating a seal at the interface. O-Rings function by deforming under compression, which allows them to fill the space between mating surfaces and create a seal. Common materials for O-Rings include nitrile rubber, silicone, and fluorocarbon. Proper sealing is vital in mechanical systems to prevent leaks, maintain pressure, and ensure the efficient operation of components ¹.

Role of the 4936171 O-Ring Seal in Truck Operation

The Cummins 4936171 O-Ring Seal plays a specific role in the operation of a truck by ensuring the integrity of seals in various systems or components. It is commonly associated with fuel systems, where it helps maintain the seal around injectors or other fuel delivery components. By doing so, it contributes to the efficient operation of the engine by ensuring that fuel is delivered under the correct pressure and without leaks.

Key Features

The Cummins 4936171 O-Ring Seal is characterized by several key features that enhance its performance. It is made from high-quality materials that offer durability and resistance to the harsh conditions found in commercial truck environments. The design specifications of the seal ensure it can withstand high pressures and temperatures, providing a reliable seal in demanding applications.

Benefits

The use of the Cummins 4936171 O-Ring Seal offers several benefits. It contributes to improved system efficiency by ensuring that fluids and gases are contained within their designated pathways. This can lead to reduced maintenance needs, as the seal helps prevent leaks that could otherwise require frequent repairs. Additionally, the seal enhances the reliability of the truck’s systems, contributing to overall vehicle performance and longevity.

Troubleshooting and Maintenance

Common issues associated with O-Ring Seals include wear, degradation, and failure due to exposure to harsh chemicals or extreme temperatures. Troubleshooting these problems often involves inspecting the seal for signs of damage or deformation and replacing it if necessary. Regular maintenance practices, such as checking for leaks and ensuring proper installation, can help ensure the longevity and optimal performance of the seal ².

About Cummins

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 and innovation in the commercial truck industry. The company offers a wide range of products designed to meet the needs of various applications, from on-highway to off-highway and industrial uses. Cummins’ commitment to excellence is reflected in its products, including the Cummins 4936171 O-Ring Seal, which is designed to meet the demanding requirements of commercial truck applications.

Cummins O-Ring Seal 4936171 Compatibility

The Cummins O-Ring Seal part number 4936171 is designed to fit a variety of Cummins engines, ensuring a reliable seal in critical applications. This O-Ring Seal is engineered to meet the stringent requirements of Cummins’ engine systems, providing durability and performance in demanding environments.

ISB Series Engines

• ISB CM2150
• ISB6.7 CM2250
• ISB6.7 CM2350 B101

The ISB series engines, including the ISB CM2150, ISB6.7 CM2250, and ISB6.7 CM2350 B101, are equipped with the 4936171 O-Ring Seal to ensure optimal sealing in various engine components. This O-Ring is critical for maintaining pressure and preventing leaks in these engines.

QSB Series Engines

• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 M CM2250

The QSB series engines, such as the QSB6.7 CM2250, QSB6.7 CM2350 B105, and QSB6.7 M CM2250, also utilize the 4936171 O-Ring Seal. This part is essential for maintaining the integrity of the engine’s sealing systems, ensuring efficient operation and longevity.

ISL and ISX Series Engines

• ISL G CM2180
• ISX12/ISX11.9 CM2250

The ISL G CM2180 and ISX12/ISX11.9 CM2250 engines incorporate the 4936171 O-Ring Seal to provide a secure seal in high-pressure areas. This ensures that these engines operate smoothly and efficiently, with minimal risk of leaks.

ISZ and QSZ Series Engines

• ISZ13 CM2150 Z105
• QSZ13 CM2150 Z101
• QSZ13 CM2150 Z102

The ISZ13 CM2150 Z105, QSZ13 CM2150 Z101, and QSZ13 CM2150 Z102 engines are also compatible with the 4936171 O-Ring Seal. This part is crucial for maintaining the sealing integrity of these engines, ensuring they perform reliably under various operating conditions.

Other Compatible Engines

• B6.7 CM2350 B135B
• Z13 Z108G

The B6.7 CM2350 B135B and Z13 Z108G engines are also designed to work with the 4936171 O-Ring Seal. This ensures that these engines maintain their sealing integrity, contributing to their overall performance and durability.

Role of Part 4936171 O-Ring Seal in Engine Systems

Crankcase Breather

The crankcase breather system is designed to release pressure that builds up within the crankcase. The part 4936171 O-Ring Seal is utilized here to ensure a tight seal between the breather and the engine block. This prevents any unwanted air or contaminants from entering the crankcase, maintaining the integrity of the engine’s internal environment.

Engine Coolant Vent

In the engine coolant vent system, the part 4936171 O-Ring Seal plays a significant role in sealing the connection points. This ensures that coolant vapors are properly vented without allowing external air to enter the cooling system. Proper sealing is essential for maintaining the efficiency of the cooling system and preventing coolant loss.

Long Block

When integrating the part 4936171 O-Ring Seal within a long block assembly, it is often used at various gasket interfaces. This includes connections between the cylinder head and the block, as well as other critical junctures. The seal ensures that fluids and gases remain within their designated pathways, contributing to the overall performance and longevity of the engine.

Long Block Kit

In a long block kit, which typically includes the engine block, crankshaft, pistons, and other essential components, the part 4936171 O-Ring Seal is employed to secure connections that may be prone to leaks. This includes sealing oil passages, coolant channels, and other fluid pathways, ensuring that the newly assembled engine operates efficiently from the outset.

Plain Hose Coupling

For plain hose couplings, the part 4936171 O-Ring Seal is instrumental in creating a leak-proof connection. Whether it’s for fuel lines, coolant hoses, or breather tubes, the seal ensures that the hose couplings remain secure under various operating conditions. This is particularly important in high-vibration environments typical of engine compartments.

Conclusion

The Cummins 4936171 O-Ring Seal is a critical component in maintaining the efficiency and reliability of commercial truck engines. By ensuring proper sealing in various engine systems, this part contributes to the overall performance and longevity of the vehicle. Regular maintenance and proper installation are essential to maximize the benefits of this seal.