3975720
Dipstick
Cummins®

The Cummins 3975720 Dipstick is a specialized component designed for use in commercial trucks. Its purpose is to facilitate the monitoring of engine oil levels, which is vital for the maintenance and efficient operation of the vehicle. By providing a straightforward method for checking oil levels, this dipstick helps ensure that the engine operates within optimal parameters, thereby contributing to the overall performance and longevity of the truck ¹.

Basic Concepts of a Dipstick

A dipstick is a simple yet essential tool used in internal combustion engines to measure the level of lubricant within the engine. It consists of a long, slender rod with a handle at one end, which is inserted into the engine’s oil reservoir. Once inserted, the dipstick is withdrawn, and the oil level is read from the markings on the rod. This process allows for the assessment of whether the oil level is within the manufacturer’s recommended range, ensuring that the engine is adequately lubricated ².

Purpose of the Cummins 3975720 Dipstick

The Cummins 3975720 Dipstick plays a specific role in the operation and maintenance of a truck’s engine by providing a means to accurately assess the engine oil level. This assessment is fundamental for maintaining the engine’s lubrication system, which is responsible for reducing friction between moving parts, dissipating heat, and cleaning the engine’s interior. Proper oil levels are necessary for the engine to function efficiently and to prevent damage from insufficient lubrication ³.

Key Features

The Cummins 3975720 Dipstick is distinguished by its design and the materials used in its construction. It is made from high-quality steel, ensuring durability and resistance to the high temperatures and pressures within the engine compartment. The dipstick features clear, easy-to-read markings for oil level indication, and its design allows for a secure fit within the engine’s oil filler tube, preventing oil leaks and ensuring accurate readings.

Benefits of Using the Cummins 3975720 Dipstick

Utilizing the Cummins 3975720 Dipstick offers several advantages. Its design ensures accurate fluid level readings, which are critical for maintaining engine health. The ease of use, combined with the durability of the materials, contributes to the dipstick’s longevity and reliability. Furthermore, by facilitating regular and accurate oil level checks, this dipstick plays a role in promoting engine longevity and efficient operation.

Troubleshooting and Maintenance Suggestions

Common issues with dipsticks may include inaccurate readings due to bent or damaged dipsticks, or oil leaks around the dipstick tube. To address these issues, it is advisable to inspect the dipstick regularly for signs of wear or damage and replace it if necessary. Ensuring the dipstick is fully seated in its tube can help prevent oil leaks. Regular maintenance of the dipstick and its surrounding components contributes to the accurate functioning of the oil level monitoring system.

Installation and Usage Guidelines

Proper installation and usage of the Cummins 3975720 Dipstick are vital for accurate fluid level readings and maintaining engine health. To install, ensure the engine is off and has had time to cool. Remove the old dipstick, insert the new one fully into the oil filler tube, and then withdraw it to check the oil level. For usage, follow the manufacturer’s guidelines for checking oil levels, ensuring the engine is on a level surface and the vehicle is parked. Wipe the dipstick clean, reinsert it, and then check the oil level against the markings on the dipstick.

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 is committed to quality, innovation, and customer satisfaction. The company’s extensive product range includes diesel and natural gas engines, as well as related technologies, serving a wide array of industries and applications. Cummins’ dedication to excellence and continuous improvement underscores its position as a trusted name in the automotive and heavy-duty truck sectors.

Cummins Engine Dipstick Compatibility

The Cummins part number 3975720, which is a Dipstick, is designed to fit a range of Cummins engines. This dipstick is crucial for checking the oil level in the engine, ensuring that the engine operates smoothly and efficiently. Below is a detailed description of how this dipstick fits with the specified Cummins engines:

• ISL CM2150 and ISL9 CM2150 SN: The dipstick 3975720 is compatible with both the ISL CM2150 and ISL9 CM2150 SN engines. These engines are known for their robust performance and reliability, and the dipstick ensures easy and accurate oil level checks.

• QSL8.9 CM2150 L141: This engine variant also utilizes the dipstick 3975720. The dipstick is engineered to fit seamlessly into the oil system of the QSL8.9 CM2150 L141, providing a reliable means to monitor oil levels.

• QSL9 CM2250 and QSL9 CM2350 L102: The dipstick 3975720 is also suitable for the QSL9 CM2250 and QSL9 CM2350 L102 engines. These engines benefit from the dipstick’s precision in measuring oil levels, which is essential for maintaining engine health.

• QSL9 CM850 (CM2850): Lastly, the dipstick 3975720 fits the QSL9 CM850 (CM2850) engine. This dipstick ensures that users can accurately check the oil levels, contributing to the longevity and efficiency of the engine.

Each of these engines, while differing in specifications and applications, relies on the dipstick 3975720 for effective oil level monitoring. Cummins has designed this dipstick to be a versatile and reliable component across these engine models, ensuring that users can maintain their engines with ease and confidence.

Role of Part 3975720 Dipstick in Engine Systems

The part 3975720 dipstick is an essential component in the oil management system of an engine. It interfaces directly with the oil level gauge to provide accurate readings of the engine oil level.

When the dipstick is inserted into the engine’s oil filler neck, it comes into contact with the oil. The oil level is then measured by observing the markings on the dipstick, which correspond to minimum and maximum oil levels. This data is crucial for the oil level gauge, which relies on the dipstick to display the current oil level to the operator.

The dipstick also plays a role in temperature regulation. As it is in constant contact with the oil, it helps in dissipating heat, ensuring that the oil does not overheat. This is particularly important in high-performance engines where oil temperature management is key to maintaining engine health.

Additionally, the dipstick acts as a vent for the oil filler neck. This venting function allows for the release of pressure build-up within the crankcase, which can occur due to blow-by gases escaping past the piston rings. Proper venting is necessary to maintain a stable oil level and prevent oil leaks.

Conclusion

In summary, the Cummins 3975720 Dipstick is integral to the accurate functioning of the oil level gauge, temperature regulation, and pressure management within the engine’s oil system. Its design and compatibility with various Cummins engines make it a reliable tool for maintaining engine health and ensuring efficient operation.