3973558
Dipstick
Cummins®

The Cummins 3973558 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 oil levels are vital for ensuring the engine operates efficiently and has a prolonged service life ¹.

Basic Concepts of a Dipstick

A dipstick is a simple yet effective tool used in internal combustion engines to measure the level of lubricant within the engine. It consists of a long, thin metal or plastic rod with a handle at one end. The rod is inserted into the engine’s oil sump through a tube. Once inserted and then withdrawn, the oil level can be read from the markings on the dipstick, which indicate the minimum and maximum acceptable oil levels ².

Purpose of the Cummins 3973558 Dipstick

The Cummins 3973558 Dipstick plays a role in the operation of a truck by allowing for the measurement of oil levels within the engine. This measurement ensures that there is sufficient lubrication for the engine’s moving parts, which is necessary to reduce friction, wear, and the generation of heat. Maintaining the correct oil level is important for the engine’s performance and longevity ³.

Key Features

The Cummins 3973558 Dipstick is characterized by its robust design and the materials used in its construction, which are chosen for their durability and resistance to the high temperatures and pressures found within an engine. The dipstick is typically made from high-quality steel, which ensures it can withstand the rigors of regular use. It may also feature a bright tip for easy visibility and clear, precise markings for accurate oil level readings.

Benefits

Using the Cummins 3973558 Dipstick offers several advantages. It provides accurate measurements of oil levels, which is important for maintaining engine health. The design of the dipstick allows for ease of use, making it simple for operators to check oil levels as part of their routine maintenance procedures. Additionally, by ensuring that the engine is properly lubricated, the dipstick contributes to the overall longevity of the engine.

Troubleshooting and Maintenance

Common issues with dipsticks can include bending, which can lead to inaccurate readings, or becoming stuck in the tube. If a dipstick is bent, it should be replaced to ensure accurate oil level measurements. Regular cleaning of the dipstick is also recommended to remove any buildup of dirt or sludge, which can affect the readings. Operators should follow the manufacturer’s guidelines for maintenance to keep the dipstick in optimal condition.

Installation and Usage

To install the Cummins 3973558 Dipstick, the engine oil cap should be removed, and the dipstick tube should be cleaned if necessary. The dipstick is then inserted fully into the tube and removed to check the oil level against the markings. It is important to wipe the dipstick clean between readings to get an accurate measurement. Operators should consult the vehicle’s manual for specific instructions and best practices related to checking oil levels.

Cummins 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 history spanning over a century, Cummins has established a reputation for quality, reliability, and innovation in the commercial truck industry. The company’s product range includes engines, filtration systems, emissions solutions, and aftermarket parts, all of which are designed to meet the demanding requirements of commercial transportation.

Cummins Engine Dipstick 3973558 Compatibility

The Cummins part number 3973558, which is a Dipstick, is designed to be compatible with several specific engine models. This dipstick is essential for checking the oil level in the engine, ensuring that it remains within the optimal range for efficient operation and longevity.

QSB5.9 CM850 Engines

The QSB5.9 CM850 engines are part of Cummins’ lineup of industrial and marine engines. These engines are known for their robust performance and reliability, often used in various applications such as agricultural machinery, generators, and marine vessels. The dipstick 3973558 fits seamlessly into these engines, providing an accurate reading of the oil level.

Grouping of Compatible Engines

While the specific compatibility of the dipstick 3973558 with the QSB5.9 CM850 engines is well-documented, it is also important to note that Cummins often designs parts to be compatible across a range of similar engine models. This design philosophy ensures that maintenance and repair tasks can be performed with minimal hassle, even when working with multiple engine types.

For instance, the dipstick 3973558 might also be compatible with other engines within the same series or those that share similar design characteristics. This compatibility allows for easier inventory management and reduces the need for multiple part numbers for similar functions across different engine models.

Role of Part 3973558 Dipstick in Engine Systems

The part 3973558 dipstick is an essential component in the maintenance and monitoring of engine systems, specifically in relation to the oil level gauge. This dipstick serves as a direct interface between the engine’s oil reservoir and the oil level gauge, facilitating accurate measurement and display of the oil level within the engine.

When the dipstick is inserted into the engine’s oil filler neck, it comes into contact with the oil, allowing for a physical measurement of the oil level. The dipstick is then removed, and the oil level is read against the markings on the dipstick. This information is vital for the oil level gauge, which relies on the dipstick’s readings to provide an accurate display to the user.

The interaction between the dipstick and the oil level gauge ensures that the engine operates within safe parameters. Proper oil levels are necessary for lubrication, cooling, and cleaning within the engine. The dipstick’s role in this process cannot be overstated, as it provides the necessary data for the gauge to function correctly, thereby aiding in the overall health and performance of the engine system.

Conclusion

The Cummins 3973558 Dipstick is a critical component for maintaining the health and efficiency of Cummins engines. Its design and features ensure accurate oil level measurements, contributing to the engine’s longevity and performance. Regular maintenance and proper use of this part are essential for the optimal operation of commercial trucks equipped with Cummins engines.