4940825
Turbocharger Oil Drain Connection
Cummins®

Introduction

The 4940825 Turbocharger Oil Drain Fitting is a component designed to facilitate the efficient drainage of oil from turbochargers used in heavy-duty trucks. This fitting plays a role in maintaining the operational integrity and performance of turbochargers, which are vital for enhancing engine power and efficiency in heavy-duty applications ¹.

Basic Concepts of Turbocharger Oil Drain Fittings

Turbocharger systems utilize compressed air to increase engine efficiency and power output. Oil is integral to the operation of turbochargers, serving to lubricate moving parts and maintain optimal temperatures. Oil drain fittings are necessary components within turbocharger systems, allowing for the periodic removal of oil to prevent contamination and ensure the system operates within specified parameters ². These fittings enable the controlled release of oil, which is important for maintaining the turbocharger’s efficiency and longevity.

Purpose of the 4940825 Turbocharger Oil Drain Fitting

The 4940825 Turbocharger Oil Drain Fitting is designed to play a role in the turbocharger system by ensuring that oil is efficiently drained from the turbocharger. This process aids in maintaining the turbocharger’s performance and longevity by preventing oil buildup, which can lead to inefficiencies and potential damage. By facilitating regular oil drainage, the fitting helps in preserving the turbocharger’s operational efficiency and reducing the likelihood of maintenance issues ³.

Key Features

The 4940825 fitting is constructed with high-quality materials to ensure durability and reliability in demanding heavy-duty truck environments. Its design includes specific features that enhance its functionality, such as a secure fitting mechanism that ensures a tight seal, preventing oil leaks. The fitting is also designed for easy installation and maintenance, with a focus on compatibility with a wide range of turbocharger models ⁴.

Benefits

Utilizing the 4940825 Turbocharger Oil Drain Fitting offers several advantages, including improved turbocharger efficiency through regular oil drainage, reduced maintenance needs due to its durable construction, and enhanced engine performance as a result of optimal turbocharger operation. These benefits contribute to the overall reliability and efficiency of heavy-duty trucks ⁵.

Installation Process

Installing the 4940825 fitting requires specific tools and adherence to a step-by-step process to ensure a secure and effective fit. Preparation steps include cleaning the turbocharger area and ensuring all components are free from debris. The fitting should be aligned with the turbocharger’s oil drain port and secured according to manufacturer instructions to prevent leaks and ensure proper function ⁶.

Maintenance and Troubleshooting

Regular maintenance of the 4940825 fitting involves checking for signs of wear or damage and ensuring the fitting remains securely in place. Common issues may include oil leaks, which can often be addressed by re-securing the fitting or replacing damaged components. Following manufacturer guidelines for maintenance can help ensure the longevity and efficiency of the fitting ⁷.

Compatibility and Application

The 4940825 fitting is designed for use with specific types of engines and turbochargers, ensuring compatibility across a range of heavy-duty truck models. Its design allows for versatile application, making it a suitable choice for various makes and models within the heavy-duty truck industry ⁸.

Cummins: A Brief Overview

Cummins Inc. is a leading manufacturer in the automotive industry, particularly known for its diesel engines and components. With a history of innovation and quality, Cummins plays a significant role in producing reliable and efficient engine components, including the 4940825 Turbocharger Oil Drain Fitting. The company’s commitment to quality and performance is evident in its wide range of products designed for the automotive and heavy-duty truck sectors ⁹.

Turbocharger Oil Drain Fitting for Cummins Engines

The Turbocharger Oil Drain Fitting, part number 4940825, manufactured by Cummins, is a component for maintaining the health and efficiency of various Cummins engines. This fitting is specifically designed to facilitate the drainage of oil from the turbocharger, ensuring that the system remains clean and free from contaminants ¹⁰.

Application in Cummins Engines

The Turbocharger Oil Drain Fitting is compatible with several Cummins engine models, including:

• QSC8.3 CM850 (CM2850)
• QSC8.3 CM870 (CM2870)
• QSC8.3 CM875 (CM2875)
• QSC8.3 CM890 (CM2890)

These engines are part of the Cummins QSC series, which is known for its robust performance and reliability in various applications, including industrial, marine, and power generation sectors ¹¹.

Importance of the Turbocharger Oil Drain Fitting

The Turbocharger Oil Drain Fitting plays a role in the engine’s lubrication system by allowing the excess oil to be expelled from the turbocharger. This process helps to:

• Prevent Oil Accumulation: Excess oil can lead to increased stress on the turbocharger, potentially causing damage over time.
• Maintain Optimal Performance: By ensuring that the turbocharger is properly lubricated but not overfilled, the engine can operate at peak efficiency.
• Extend Component Life: Proper oil management reduces wear and tear on the turbocharger, leading to longer service life and reduced maintenance costs ¹².

Installation and Maintenance

Proper installation and regular maintenance of the Turbocharger Oil Drain Fitting are important to ensure its effectiveness. Technicians should:

• Check for Leaks: Regularly inspect the fitting for any signs of leaks or damage.
• Ensure Proper Sealing: Verify that the fitting is securely attached and sealed to prevent oil loss.
• Follow Manufacturer Guidelines: Adhere to Cummins’ recommended maintenance schedules and procedures for optimal performance ¹³.

Role of Part 4940825 Turbocharger Oil Drain Fitting in Engine Systems

The 4940825 Turbocharger Oil Drain Fitting is a component in the maintenance and operation of turbocharged engine systems. Its primary function is to facilitate the drainage of oil from the turbocharger, ensuring that the lubrication system remains efficient and that the turbocharger operates within optimal parameters ¹⁴.

Integration with Turbocharger

In turbocharged engines, the turbocharger is responsible for compressing the intake air, which in turn increases the engine’s power output. The turbocharger itself requires lubrication to reduce friction and wear on its rotating components. The 4940825 fitting is installed in the oil return line of the turbocharger, allowing used oil to be drained back into the engine’s lubrication system. This process helps maintain the correct oil level and viscosity within the turbocharger, ensuring smooth operation and prolonging the turbocharger’s lifespan ¹⁵.

Connection to Plumbing System

The fitting interfaces with the engine’s plumbing system, which includes oil lines, filters, and the oil pan. By providing a secure connection point for the oil drain line, the 4940825 fitting ensures that oil can be efficiently returned to the sump or oil pan. This integration is vital for maintaining the overall health of the engine’s lubrication system, as it prevents oil starvation and ensures that fresh oil is continually circulated through the turbocharger ¹⁶.

Maintenance and Efficiency

Regular drainage of oil from the turbocharger is necessary to remove contaminants and degradation products that can accumulate over time. The 4940825 fitting plays a role in this maintenance process by allowing for easy and controlled oil drainage. This not only enhances the efficiency of the turbocharger but also contributes to the overall reliability and performance of the engine ¹⁷.

System Balance

The fitting helps maintain a balance within the engine’s lubrication system by ensuring that oil levels are consistent. This is particularly important in high-performance engines where precise oil management can significantly impact engine durability and performance. The 4940825 fitting, therefore, is a small yet integral part of the broader engine system, contributing to the seamless operation of both the turbocharger and the engine as a whole ¹⁸.

Conclusion

The 4940825 Turbocharger Oil Drain Fitting by Cummins is a critical component in the maintenance and efficiency of turbocharged engine systems. Its role in facilitating the drainage of oil from the turbocharger ensures optimal performance, longevity, and reliability of the engine. Proper installation, regular maintenance, and adherence to manufacturer guidelines are essential for maximizing the benefits of this Cummins part.