3939138
Oil Gauge Tube
Cummins®

The Cummins 3939138 Oil Gauge Tube is a component designed for use in commercial trucks, playing a role in the engine’s lubrication system by facilitating the monitoring of oil levels and pressure. Its function is significant for maintaining the engine’s operational efficiency and longevity ⁴.

Function and Operation

This Cummins part operates within the engine’s lubrication system, where it serves to convey oil from the sump to the oil gauge. This allows for the continuous monitoring of oil levels and pressure, providing vital data that informs the driver or operator of the engine’s lubrication status. Proper oil levels and pressure are indicative of the engine’s health and are necessary for the efficient operation of the engine’s moving parts ¹.

Key Features

The 3939138 is characterized by its robust design and construction. It is made from materials that offer durability and resistance to the high temperatures and pressures found within an engine environment. Precision engineering ensures that the tube fits securely within the engine, minimizing the risk of leaks and ensuring accurate oil level readings ².

Benefits

This part offers several advantages. It provides accurate oil level readings, which are necessary for maintaining optimal engine performance. Enhanced engine protection is another benefit, as consistent monitoring of oil levels and pressure can prevent engine damage due to insufficient lubrication. Additionally, the tube’s reliability in demanding operating conditions makes it a valuable component for commercial truck engines ³.

Installation and Maintenance

For the 3939138, proper installation involves ensuring a secure fit within the engine to prevent leaks and guarantee accurate readings. Maintenance practices include regular inspection for signs of wear or damage and ensuring that the tube is free from obstructions. Following these guidelines helps to ensure optimal performance and longevity of the component ⁴.

Troubleshooting Common Issues

Common issues with Oil Gauge Tubes may include leaks or inaccurate readings. Troubleshooting steps may involve checking the tube for physical damage, ensuring it is properly seated within the engine, and verifying that there are no obstructions in the oil path. Addressing these issues promptly can help maintain the integrity of the engine’s lubrication system ¹.

Importance in Engine Health

The 3939138 contributes to overall engine health by providing essential data for monitoring oil levels and detecting potential issues early. Consistent and accurate oil level readings allow for timely maintenance and can prevent engine damage, extending the engine’s operational life ².

Cummins Overview

Cummins Inc. is a well-established manufacturer with a history of producing high-quality components for commercial vehicles. The company’s reputation in the automotive industry is built on a commitment to innovation, quality, and reliability, making its products, including the 3939138, a preferred choice for commercial truck operators ³.

Cummins Oil Gauge Tube (Part 3939138) Compatibility

The Cummins Oil Gauge Tube, identified by part number 3939138, is a component designed to monitor the oil level in various Cummins engine models. This part ensures that the engine operator can maintain optimal oil levels, which is vital for the engine’s longevity and performance.

Engine Compatibility

• 6B5.9: The Oil Gauge Tube is compatible with the 6B5.9 engine, providing accurate oil level readings to prevent engine damage due to insufficient lubrication.
• ISL CM2150 and ISL9 CM2150 SN: Both engines benefit from the use of the 3939138. This part ensures that the oil levels are consistently monitored, which is crucial for maintaining engine efficiency and preventing potential failures.
• ISL9 CM2250: The ISL9 CM2250 engine also integrates seamlessly with the 3939138. This compatibility ensures that operators can rely on precise oil level monitoring, contributing to the engine’s overall reliability and performance.
• L8.9: The L8.9 engine is another model that is compatible with the 3939138. This part is essential for maintaining the correct oil levels, which is critical for the engine’s operational integrity.
• QSB5.9 30 CM550 and QSB5.9 44 CM550: Both engines are designed to work with the 3939138. This compatibility ensures that operators can accurately monitor oil levels, which is crucial for preventing engine damage and ensuring optimal performance.
• QSL8.9 CM2150 L141: The QSL8.9 CM2150 L141 engine is also compatible with the 3939138. This part is essential for maintaining the correct oil levels, which is critical for the engine’s operational integrity.
• QSL9 CM2250 and QSL9 CM2350 L102: The QSL9 CM2250 and QSL9 CM2350 L102 engines are designed to work with the 3939138. This compatibility ensures that operators can accurately monitor oil levels, which is crucial for preventing engine damage and ensuring optimal performance.
• QSL9 CM850 (CM2850): The QSL9 CM850 (CM2850) engine is another model that is compatible with the 3939138. This part is essential for maintaining the correct oil levels, which is critical for the engine’s operational integrity.

Role of Part 3939138 Oil Gauge Tube in Engine Systems

The 3939138 is an integral component in the accurate measurement and monitoring of oil levels within an engine system. This tube facilitates the connection between the oil sump and the oil gauge, ensuring that the gauge receives a consistent and reliable oil sample for measurement.

When the dipstick is inserted into the Oil Gauge Tube, it draws up a sample of the engine oil. This sample is then used by the gauge to provide a reading of the current oil level. The accuracy of this reading is dependent on the proper functioning of the Oil Gauge Tube, as any obstructions or damage to the tube can lead to inaccurate oil level readings.

The Oil Gauge Tube also plays a part in maintaining the integrity of the oil level measurement system. It protects the gauge from direct contact with the oil, which can lead to gauge malfunction over time. Additionally, the tube helps to prevent oil leaks, which can occur if the connection between the sump and the gauge is not properly sealed.

Conclusion

In summary, the 3939138 is a key component in the oil level measurement system of an engine. It ensures accurate and reliable oil level readings by providing a consistent oil sample to the gauge, while also protecting the gauge from direct oil contact and preventing oil leaks ⁴.