4938918
Dipstick
Cummins®

The Cummins 4938918 Dipstick is a specialized component designed for use in heavy-duty trucks. Its purpose is to facilitate the measurement of oil levels within the engine, ensuring that the lubrication system operates effectively. This part is significant in the context of heavy-duty truck maintenance as it provides a straightforward yet vital function that contributes to the overall health and performance of the engine.

Basic Concepts of a Dipstick

A dipstick is a simple yet essential tool used in internal combustion engines to measure the level of lubricating oil. It consists of a long, thin metal or plastic rod with a handle at one end. The other end is inserted into the engine’s oil sump. The dipstick operates on the principle of capillary action, where oil rises along the narrow channel of the dipstick to indicate the current oil level. This measurement helps ensure that the engine maintains adequate lubrication, which is vital for reducing friction and wear on moving parts ¹.

Purpose of the Cummins 4938918 Dipstick

This Cummins part plays a role in the operation of a truck by allowing for the precise measurement of oil levels. This ensures that the engine components receive proper lubrication, which is necessary for efficient operation and longevity. By regularly checking the oil level with this dipstick, operators can prevent issues such as engine overheating or component failure due to insufficient lubrication ².

Key Features

The Cummins 4938918 Dipstick is constructed from high-quality materials to enhance its performance and durability. It features a robust design that can withstand the harsh conditions typical of heavy-duty truck environments. The dipstick is marked with clear indicators for minimum and maximum oil levels, allowing for accurate readings. Its length is tailored to fit specific Cummins engines, ensuring a proper fit and reliable operation.

Benefits

Using the Cummins 4938918 Dipstick offers several advantages. It provides accurate oil level measurements, which are crucial for maintaining engine health. The dipstick is easy to use, requiring only a simple insertion into the engine and a quick check of the oil level. Additionally, it is specifically designed for compatibility with Cummins engines, ensuring optimal performance and reliability.

Installation Process

To install the Cummins 4938918 Dipstick, first, ensure the engine is turned off and has cooled down. Locate the dipstick tube, usually found near the top of the engine. Remove the old dipstick by pulling it straight out of the tube. Insert the new dipstick fully into the tube until it reaches the bottom, then withdraw it slightly to get an accurate reading. Reinsert the dipstick fully and secure it in place. It is important to follow safety precautions, such as wearing protective gloves and ensuring the work area is well-ventilated.

Troubleshooting and Maintenance

Common issues with dipsticks include inaccurate readings or physical damage. If the dipstick provides inconsistent readings, it may be bent or damaged and should be replaced. Regular maintenance involves checking the dipstick for signs of wear or corrosion and ensuring it is properly seated in the tube. Keeping the dipstick clean and free of debris will also contribute to its longevity and accurate function.

Role in Preventive Maintenance

Regularly checking oil levels using the Cummins 4938918 Dipstick is a key component of preventive maintenance for heavy-duty trucks. Maintaining optimal oil levels ensures that the engine remains properly lubricated, which is important for reducing wear and tear on engine components. This practice helps in identifying potential issues early, such as oil leaks or consumption, allowing for timely interventions and prolonging the engine’s service life ³.

Cummins Overview

Cummins Inc. is a well-established manufacturer of diesel engines and related technologies. Founded in 1919, the company has built a reputation for producing reliable and high-performance engine components. Cummins is known for its commitment to innovation and quality, making its products, including the 4938918 Dipstick, trusted choices in the industry. The company’s extensive experience and dedication to excellence underscore the reliability and effectiveness of its components.

Cummins Engine Dipstick 4938918 Compatibility

The Cummins part number 4938918, which is a Dipstick, is compatible with several models of Cummins engines. This dipstick is designed to fit seamlessly into the engine’s oil system, ensuring accurate oil level readings and facilitating proper maintenance procedures.

Compatible Engines

• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

Grouping by Engine Series

QSB6.7 Series:

• QSB6.7 CM2250: This engine model is part of the QSB6.7 series, which is known for its robust performance and reliability. The dipstick 4938918 is engineered to fit this model, ensuring that users can easily check and maintain the oil levels.

• QSB6.7 CM2350 B105: This variant of the QSB6.7 series includes the B105 designation, indicating specific modifications or enhancements. The dipstick 4938918 is designed to integrate smoothly with this engine, providing accurate oil level readings.

• QSB6.7 CM850 (CM2850): This engine, also part of the QSB6.7 series, benefits from the use of the dipstick 4938918. The dipstick’s design ensures it fits perfectly, allowing for easy and precise oil level checks.

QSB7 Series:

• QSB7 CM2880 B117: As part of the QSB7 series, this engine model is equipped with the dipstick 4938918. This dipstick is specifically designed to fit the QSB7 series, ensuring that users can maintain optimal oil levels with ease.

Each of these engines benefits from the use of the dipstick 4938918, which is crafted to provide reliable and accurate oil level readings, facilitating the maintenance and longevity of the engines.

Role of Part 4938918 Dipstick in Engine Systems

The part 4938918 dipstick is an essential component in the engine system, facilitating the accurate measurement and monitoring of the oil level. When integrated into the engine, the dipstick extends into the oil sump, allowing for direct contact with the oil. This contact enables the dipstick to provide a physical reading of the oil level when pulled out and observed.

In conjunction with the gauge, the dipstick offers a visual indication of the oil status. Although the dipstick itself does not have a gauge, the markings on the dipstick are designed to align with the gauge’s indicators on the engine’s exterior. This alignment ensures that the oil level can be quickly assessed without needing to consult external references, promoting efficient maintenance routines.

The relationship between the dipstick and the oil level is straightforward yet vital. The dipstick’s design allows it to be inserted into the oil fill tube, which is connected to the oil sump. As the dipstick is withdrawn, the oil adhering to it provides a clear indication of the current oil level. This process is fundamental for maintaining optimal engine performance, as it ensures that the engine is neither overfilled nor underfilled with oil. Proper oil levels are necessary for lubrication, cooling, and cleaning within the engine, directly influencing its longevity and efficiency.

Conclusion

The Cummins 4938918 Dipstick is a critical component for maintaining the health and performance of heavy-duty truck engines. By providing accurate oil level measurements, it ensures that the engine remains properly lubricated, reducing wear and tear on components. Regular use of this dipstick as part of a preventive maintenance routine can help identify potential issues early, allowing for timely interventions and prolonging the engine’s service life. Its compatibility with various Cummins engine models and its robust design make it a reliable tool for any heavy-duty truck maintenance regimen.