3907679
Dipstick
Cummins®

Introduction

The Cummins 3907679 Dipstick is a component designed for use in commercial trucks equipped with Cummins engines. Its purpose is to facilitate the measurement of engine oil levels, which is a fundamental aspect of maintaining and operating these vehicles. Proper lubrication is vital for the longevity and efficiency of engine components, making the dipstick an integral part of routine maintenance procedures ¹.

Basic Concepts of a Dipstick

A dipstick is a tool used in internal combustion engines to measure the level of lubricant within the crankcase. It consists of a long, slender rod with a handle at one end, typically made from metal or a durable plastic. The rod is inserted into a tube that leads to the oil sump, allowing it to come into contact with the oil. Once removed, the oil level can be read from markings on the dipstick, indicating whether the oil is within the acceptable range ².

Purpose of the Cummins 3907679 Dipstick

The Cummins 3907679 Dipstick plays a role in the operation of a truck by enabling the measurement of oil levels within the engine. This measurement ensures that there is sufficient lubrication for engine components, which helps in reducing friction, wear, and heat. Maintaining the correct oil level is important for the engine’s performance and longevity ³.

Key Features

The Cummins 3907679 Dipstick is characterized by its robust design and the materials used in its construction. It is made from high-quality steel, which provides durability and resistance to the high temperatures and pressures within the engine compartment. The dipstick features clear, easy-to-read markings for accurate oil level measurement and a secure fitting to prevent oil leaks.

Benefits

Using the Cummins 3907679 Dipstick offers several advantages. Its accurate measurement capabilities ensure that oil levels are maintained within the recommended range, contributing to engine efficiency and longevity. The dipstick’s design allows for easy use, making it a convenient tool for routine maintenance checks. Additionally, its durable construction ensures it can withstand the demanding conditions of commercial truck operation.

Troubleshooting and Maintenance

Common issues with dipsticks may include inaccurate readings due to bent or damaged dipsticks, or oil leaks around the dipstick tube. Troubleshooting these problems involves inspecting the dipstick for damage and ensuring it is properly seated in its tube. Regular maintenance includes cleaning the dipstick before and after use to remove any debris or contaminants that could affect readings.

Installation and Usage

To install and use the Cummins 3907679 Dipstick, first, ensure the vehicle is on a level surface and the engine is off. Locate the dipstick tube, usually found near the engine’s center. Remove the dipstick by pulling it straight out, wipe it clean with a lint-free cloth, reinsert it fully, and then remove it again to check the oil level. The oil should be between the minimum and maximum marks. If necessary, add oil to reach the proper level.

Safety Considerations

When using the Cummins 3907679 Dipstick, it is important to allow the engine to cool before checking the oil level to avoid burns from hot engine components or oil. Ensure the area around the dipstick is clean and free from debris to prevent contamination of the oil. Always replace the dipstick cap securely after checking the oil level to prevent oil leaks and maintain engine efficiency.

Cummins Overview

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, reliability, and innovation in the commercial truck industry. Its product range includes engines, powertrains, and related components, all designed to meet the demanding requirements of commercial and industrial applications.

Cummins Dipstick Part 3907679 Compatibility

The Cummins dipstick part number 3907679 is designed to be compatible with a range of Cummins engines, ensuring accurate and reliable oil level checks. This dipstick is specifically engineered to fit seamlessly with the following engine models:

• 4B3.9
• 6B5.9

These engines are part of the broader family of Cummins diesel engines, known for their robust performance and reliability in various applications. The dipstick’s design ensures it can interface properly with the oil systems of these engines, providing users with the necessary tool to maintain optimal oil levels.

When using the dipstick with these engines, it is crucial to follow the manufacturer’s guidelines for proper installation and usage to ensure accurate readings and maintain engine health.

Role of Part 3907679 Dipstick in Engine Systems

The part 3907679 dipstick is a component in the monitoring and maintenance of engine systems. It works in conjunction with the oil level gauge to provide accurate readings of the engine’s oil level.

When the dipstick is inserted into the engine’s oil filler neck, it comes into direct contact with the oil. The oil adheres to the dipstick, and when it is withdrawn, the level of oil on the dipstick can be observed. This oil level is then compared against the markers on the dipstick, which correspond to minimum and maximum oil levels.

The oil level gauge, often a simple visual scale, relies on the dipstick to provide the necessary data. The gauge itself may be a part of the dipstick design, with markings directly on the dipstick, or it could be a separate component that the user references when reading the oil level from the dipstick.

Accurate oil level readings are important for the proper lubrication of engine components, prevention of engine wear, and ensuring optimal engine performance. The dipstick facilitates this by offering a straightforward and reliable method for checking the oil level without the need for more complex instrumentation.

Conclusion

The Cummins 3907679 Dipstick is a vital component for maintaining the health and efficiency of Cummins engines in commercial trucks. Its design ensures accurate oil level measurements, contributing to engine longevity and performance. Regular maintenance and proper usage of this part are essential for the optimal operation of these engines.