4976196
Oil Restrictor
Cummins®

The Cummins 4976196 Oil Restrictor is a component designed to regulate the flow of oil within the lubrication system of heavy-duty trucks. Its role is to ensure that oil is distributed efficiently throughout the engine, contributing to the overall performance and longevity of the vehicle.

Basic Concepts of Oil Restrictors

An oil restrictor is a device used in an engine’s lubrication system to control the rate at which oil flows to various engine components. By limiting the flow, it helps maintain consistent oil pressure, which is vital for the proper functioning of the engine ¹. The principles behind its operation involve the use of calibrated orifices or passages that create resistance to the oil flow, thereby regulating it.

Purpose of the 4976196 Oil Restrictor

The 4976196 Oil Restrictor plays a specific role in the lubrication system of Cummins engines by managing oil pressure and flow. It ensures that oil reaches critical engine components at the correct pressure and rate, which is essential for reducing wear and tear, enhancing engine efficiency, and supporting the engine’s overall performance.

Key Features

The design and construction of the 4976196 Oil Restrictor incorporate high-quality materials that are resistant to the harsh conditions within an engine. Its build quality ensures durability and reliability, while unique characteristics such as precise orifice sizing enhance its performance in regulating oil flow.

Benefits of Using the 4976196 Oil Restrictor

Utilizing the 4976196 Oil Restrictor offers several advantages, including improved engine performance due to optimal oil distribution, increased engine longevity through reduced wear on components, and enhanced reliability of the lubrication system ². Additionally, its efficient operation can lead to cost savings for fleet operators by minimizing the need for frequent maintenance and repairs.

Installation and Compatibility

Proper installation of the 4976196 Oil Restrictor is crucial for its effective operation. It is designed to be compatible with specific Cummins engine models, ensuring that it fits seamlessly into the existing lubrication system. Installation guidelines should be followed to ensure that the restrictor is correctly positioned and secured, allowing for optimal performance.

Maintenance and Troubleshooting

Routine maintenance of the 4976196 Oil Restrictor involves inspection procedures to check for any signs of wear or damage, cleaning methods to remove any contaminants that may affect its operation, and adherence to recommended replacement intervals. Troubleshooting common issues related to oil restrictors can involve checking for proper oil pressure and flow, and addressing any discrepancies to maintain engine health.

Common Misconceptions

There are frequent misunderstandings about oil restrictors, their function, and maintenance. It is important to clarify that oil restrictors are not merely obstacles to oil flow but are carefully designed components that play a vital role in the engine’s lubrication system. Accurate information about their maintenance and operation is necessary to ensure proper usage and maximize their benefits.

Cummins Corporation Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including diesel and natural gas engines, as well as related technologies. With a strong commitment to innovation and quality, Cummins has established itself as a trusted name in the diesel engine market, continually advancing the technology and efficiency of its products.

Cummins Oil Restrictor 4976196 Compatibility

The Cummins Oil Restrictor part number 4976196 is designed to fit seamlessly within various engine configurations, ensuring optimal oil flow and pressure management. This part is engineered to integrate with the following engines:

ISV (Nissan) Engines

• ISV1200
• ISV1500
• ISV1800

These engines, manufactured by Nissan, are known for their robust performance and reliability. The Cummins Oil Restrictor 4976196 is specifically tailored to fit these models, providing essential oil flow regulation that helps maintain engine efficiency and longevity.

The integration of this part ensures that the oil flow is appropriately restricted, preventing potential engine damage due to excessive oil pressure or flow. This compatibility is crucial for maintaining the integrity of the engine’s lubrication system, ensuring that all moving parts are adequately lubricated and protected.

By fitting the Cummins Oil Restrictor 4976196 into the ISV engines, users can expect enhanced engine performance and reduced wear and tear, contributing to the overall lifespan and reliability of the engine.

Role of Part 4976196 Oil Restrictor in Engine Systems

In the context of engine systems, the 4976196 Oil Restrictor is an essential component that regulates the flow of oil to various parts of the engine, ensuring optimal lubrication and performance.

Integration with the Block and Cylinder Block

When installed in the block or cylinder block, the 4976196 Oil Restrictor manages the oil supply to the main bearings and other critical areas. This regulation helps maintain consistent oil pressure, which is vital for the longevity and efficiency of the engine ³. The restrictor ensures that oil is distributed evenly, preventing any part from receiving too much or too little lubrication.

Functionality in Long Block Kit

In a long block kit, which includes the block, crankshaft, pistons, and other essential components, the 4976196 Oil Restrictor plays a significant role in the oiling system. It ensures that all moving parts within the engine receive the necessary lubrication, reducing friction and wear. This is particularly important in high-performance engines where precision and reliability are paramount.

Importance in Short Block Kit

Similarly, in a short block kit, which typically consists of the block, crankshaft, pistons, and connecting rods, the 4976196 Oil Restrictor is integral to the oiling system. It helps in maintaining the correct oil pressure and flow, which is essential for the proper functioning of the crankshaft and connecting rods. This ensures smooth operation and extends the lifespan of these components.

Overall Impact on Engine Performance

By regulating oil flow, the 4976196 Oil Restrictor contributes to the overall performance and reliability of the engine. It helps in achieving a balance between lubrication and oil pressure, which is essential for the efficient operation of the engine’s moving parts. Whether in a standard engine block, a long block kit, or a short block kit, the proper installation and function of this restrictor are key to ensuring the engine operates within its designed parameters.

Conclusion

The Cummins 4976196 Oil Restrictor is a vital component in the lubrication system of heavy-duty engines, ensuring optimal oil distribution and pressure management. Its integration into various engine configurations, including ISV engines, enhances engine performance and longevity. Proper installation, maintenance, and understanding of its function are crucial for maximizing the benefits of this part.