3965400
Dipstick
Cummins®

The 3965400 Oil Level Dipstick, manufactured by Cummins, is a critical component in the maintenance of heavy-duty trucks. This part facilitates the monitoring of engine oil levels, ensuring the engine operates within optimal parameters.

Basic Concepts of an Oil Level Dipstick

An oil level dipstick is a tool used in vehicles to measure the amount of oil present in the engine. It provides a quick and straightforward method for checking the oil level without the need for complex procedures. The dipstick is inserted into the engine’s oil sump, removed, and the oil level is read from the markings on the dipstick, indicating whether the oil level is within the acceptable range ¹.

Purpose of the 3965400 Oil Level Dipstick

This Cummins part is designed specifically for use in heavy-duty trucks. It plays a role in maintaining engine health and performance by allowing for regular checks of the oil level. Proper oil levels are necessary for lubrication, cooling, and cleaning within the engine, thereby contributing to its longevity and efficiency.

Key Features

The 3965400 is characterized by its robust design and the use of high-quality materials, which enhance its durability and functionality. It is crafted to withstand the harsh conditions typical of heavy-duty truck environments. The dipstick features clear, easy-to-read markings for accurate oil level assessment and is designed for straightforward installation and use.

Benefits

Utilizing this part offers several advantages, including improved engine performance through regular oil level checks, ease of use for quick assessments, and reliability in providing accurate readings. These factors contribute to the overall maintenance and efficiency of heavy-duty trucks.

Installation Process

Installing the 3965400 involves a few straightforward steps. First, ensure the engine is turned off and has had sufficient time to cool. Locate the dipstick tube, remove the old dipstick, and insert the new one until it reaches the bottom of the tube. Then, slowly withdraw it to check the oil level. Tools required may include a socket wrench for removing the dipstick tube cap, if applicable. Always follow safety precautions, such as wearing gloves and ensuring the work area is well-ventilated.

Usage Instructions

To use the 3965400 for checking oil levels, start by ensuring the vehicle is on a level surface and the engine is off. Remove the dipstick, wipe it clean with a lint-free cloth, reinsert it fully, and then remove it again to check the oil level against the markings. For accurate readings, it’s best practice to check the oil level when the engine is cold or after it has been off for a few minutes to allow the oil to settle.

Troubleshooting Common Issues

Common issues with the 3965400 may include inaccurate readings or difficulty in insertion. Inaccurate readings can often be resolved by ensuring the dipstick is fully inserted and wiped clean before taking a reading. Difficulty in insertion may indicate a bent dipstick or obstructions in the dipstick tube, which may require inspection and cleaning.

Maintenance Tips

To ensure the longevity and accurate performance of the 3965400, regular maintenance is recommended. This includes cleaning the dipstick after each use with a lint-free cloth and inspecting it for any signs of wear or damage. Additionally, ensuring the dipstick tube is free from obstructions will help maintain the accuracy of oil level readings.

About Cummins

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 strong reputation in the automotive industry, Cummins is committed to delivering reliable, efficient, and innovative products that meet the demanding requirements of heavy-duty applications.

Cummins Oil Level Dipstick 3965400 Compatibility

The Cummins Oil Level Dipstick, part number 3965400, is designed to fit seamlessly with a range of Cummins engines, ensuring accurate and reliable oil level checks. This dipstick is engineered to provide precise measurements, which is crucial for maintaining optimal engine performance and longevity.

QSB3.9 30 Engine

The QSB3.9 30 engine is a robust and efficient power unit, often utilized in various industrial and agricultural applications. The 3965400 oil level dipstick is specifically tailored to fit this engine model, ensuring that users can easily and accurately monitor their oil levels. This compatibility is essential for maintaining the engine’s performance and preventing potential damage due to low oil levels.

CM550 Engine

The CM550 engine is another reliable power unit from Cummins, known for its durability and efficiency. The 3965400 oil level dipstick is designed to integrate perfectly with the CM550 engine, providing users with the necessary tool to check oil levels effectively. This ensures that the engine operates smoothly and efficiently, reducing the risk of engine failure due to inadequate oil levels.

Grouping of Engines

Both the QSB3.9 30 and CM550 engines benefit from the use of the 3965400 oil level dipstick, as it is engineered to fit these models precisely. This compatibility allows for a standardized approach to oil level checks across different engine types, simplifying maintenance procedures and ensuring that users can rely on accurate measurements. The dipstick’s design is optimized for these specific engines, making it an essential component for maintaining their operational integrity.

Conclusion

The 3965400 Oil Level Dipstick is an essential component in the engine system, facilitating the accurate measurement and monitoring of oil levels within the engine. Regular use of this part in maintenance routines allows for the early detection of oil leaks or consumption issues, indirectly supporting the longevity and efficiency of the engine.