3939094
Dipstick
Cummins®

Introduction

The Cummins 3939094 Dipstick is a component designed for use in commercial trucks, specifically for monitoring oil levels within the engine. Its role is significant in ensuring the proper maintenance and operation of these vehicles, as accurate oil level readings are vital for engine health and performance ¹.

Basic Concepts of a Dipstick

A dipstick is a tool used in internal combustion engines to measure the level of oil. It consists of a long, thin metal or plastic rod with a handle at one end. The rod is inserted into the oil sump of the engine, and upon removal, the oil level can be read from the markings on the dipstick. This process allows for the assessment of whether the oil level is within the acceptable range, ensuring that the engine is adequately lubricated ¹.

Purpose of the Cummins 3939094 Dipstick

The Cummins 3939094 Dipstick serves to measure the oil level in the engine of a truck. By providing an accurate reading of the oil level, it enables technicians and operators to maintain the correct oil level, which is important for the lubrication and cooling of engine components, as well as for preventing engine wear and damage ¹.

Key Features

This Cummins part is characterized by its robust design and the use of high-quality materials, ensuring durability and reliability. It features clear, easy-to-read markings for oil level indication and is crafted to withstand the high temperatures and pressures within an engine environment. Its design also facilitates easy insertion and removal from the oil sump.

Benefits

Utilizing the Cummins 3939094 Dipstick offers several advantages. It provides accurate oil level measurements, which are important for maintaining engine efficiency and longevity. The dipstick’s durable construction ensures it can withstand the demanding conditions of commercial truck operation, and its straightforward design makes it easy to use, even for those with limited mechanical experience.

Installation Process

Installing the Cummins 3939094 Dipstick involves several steps. First, ensure the engine is turned off and has cooled down to avoid burns. Locate the dipstick tube, usually found near the top of the engine. Remove the old dipstick by unscrewing it from the tube. Insert the new dipstick fully into the tube, then screw it in place until it is secure. Finally, check the installation by pulling the dipstick out and reinserting it to ensure it moves freely and fits snugly.

Usage Instructions

To use the Cummins 3939094 Dipstick for checking oil levels, start by ensuring the truck is on a level surface and the engine is off. Remove the dipstick from the tube, wipe it clean with a cloth, and reinsert it fully. After a few seconds, pull the dipstick out and observe the oil level against the markings. The oil should be between the minimum and maximum marks. If the level is low, add the appropriate type of oil until it reaches the correct level.

Troubleshooting and Maintenance

Common issues with the Cummins 3939094 Dipstick may include difficulty in reading the oil level or the dipstick becoming stuck in the tube. To address these, ensure the dipstick is clean and free from debris, and use a gentle twisting motion when removing it. Regular maintenance involves checking the dipstick for signs of wear or damage and replacing it if necessary to ensure accurate readings.

About Cummins

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 renowned for its commitment to quality, innovation, and customer satisfaction in the commercial truck and engine industry. The company offers a wide range of products designed to meet the needs of various applications, from on-highway to off-highway and industrial uses.

Cummins Engine Dipstick Compatibility

The Cummins part number 3939094, which is a Dipstick, is designed to be compatible with several engine models. This includes the 6B5.9, QSB5.9 30 CM550, and QSB5.9 44 CM550 engines.

For the 6B5.9 engine, the dipstick is engineered to provide accurate readings of the engine oil level, ensuring optimal performance and longevity. Similarly, for the QSB5.9 30 CM550 and QSB5.9 44 CM550 engines, the dipstick is tailored to fit seamlessly, allowing for easy and precise oil level checks.

These dipsticks are critical components for maintaining the health of the engines, as they help prevent issues related to low oil levels, which can lead to significant engine damage. Ensuring the correct dipstick is used for each engine model is essential for maintaining the engine’s efficiency and reliability.

Role of Part 3939094 Dipstick in Engine Systems

This part is an integral component in the maintenance and monitoring of engine systems. It is specifically designed to interface with the oil level gauge system, providing a direct and accurate measurement 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. Upon removal, the oil level can be read from the markings on the dipstick, which correspond to minimum and maximum oil levels. This data is essential for the oil level gauge, which relies on the dipstick’s readings to display the current oil level to the operator.

The dipstick also plays a role in the overall health of the engine. By ensuring that the oil level is maintained within the specified range, it helps in the lubrication of moving parts, cooling of the engine, and cleaning of internal components. This, in turn, contributes to the efficient operation and longevity of the engine.

Conclusion

In summary, the Cummins 3939094 Dipstick is a simple yet effective tool that, when used in conjunction with the oil level gauge, provides vital information for the proper functioning and maintenance of engine systems. Its accurate readings are essential for maintaining engine efficiency, preventing wear and damage, and ensuring the longevity of commercial truck engines.