3936358
Filler Cap
Cummins®

The Cummins 3936358 Filler Cap is a component designed for use in the fueling systems of commercial trucks. Its primary role is to facilitate the addition of fuel to the vehicle’s tank while preventing contamination and ensuring the integrity of the fuel system. This part is integral to the efficient operation of trucks, contributing to their reliability and performance on the road.

Purpose and Function

The 3936358 Filler Cap serves a dual purpose in the fueling system of a truck. It allows for the convenient addition of fuel to the tank while also acting as a barrier against contaminants such as dirt, water, and debris. By sealing the fuel tank, it maintains the purity of the fuel, which is crucial for the engine’s performance and longevity ¹. Additionally, the cap helps in retaining fuel vapors, contributing to environmental protection by reducing emissions.

Key Features

The design and construction of the 3936358 Filler Cap incorporate several features that enhance its performance and durability. It is typically made from high-quality materials that resist corrosion and wear, ensuring longevity even in harsh operating conditions. The cap includes a sealing mechanism, often a gasket or O-ring, that provides a tight seal against the fuel tank, preventing leaks and ensuring that contaminants are kept out. Some models may also feature a venting system that allows for the safe release of pressure build-up within the tank during refueling.

Benefits

The advantages of using the 3936358 Filler Cap include improved fuel system integrity, which leads to better engine performance and efficiency ². Its design facilitates ease of use during refueling, reducing the risk of spills and making the process more convenient for operators. Additionally, the cap’s durability and resistance to wear contribute to long-term cost savings by reducing the frequency of replacements and maintenance needs.

Installation Process

Installing the 3936358 Filler Cap requires careful attention to ensure a secure fit. The process typically involves cleaning the fuel tank opening to remove any dirt or debris, aligning the cap with the tank’s threads, and tightening it to the manufacturer’s specified torque. It is important to use the correct tools and follow best practices to avoid cross-threading or over-tightening, which could damage the cap or the tank.

Maintenance and Care

To prolong the lifespan of the 3936358 Filler Cap and ensure consistent performance, routine maintenance and care are recommended. This includes regular inspection for signs of wear or damage, cleaning the cap and its sealing surfaces to remove any buildup, and replacing the gasket or O-ring as needed. Proper maintenance helps prevent leaks and ensures the cap continues to effectively seal the fuel tank.

Troubleshooting Common Issues

Common problems associated with filler caps, such as leaks or difficulty in opening, can often be addressed through simple troubleshooting steps. For leaks, checking the condition of the sealing mechanism and ensuring the cap is properly tightened can resolve the issue. If the cap is difficult to open, lubricating the threads or using a cap release tool may help. Regular maintenance can prevent many of these issues from occurring.

Safety Considerations

When handling and maintaining the 3936358 Filler Cap, it is important to observe safety practices and precautions. This includes proper handling of fuel to avoid spills and inhalation of fumes, as well as awareness of the potential for static electricity buildup, which can be a fire hazard ³. Operators should also be cautious of hot surfaces on the vehicle and use appropriate personal protective equipment when necessary.

Environmental Impact

The use and disposal of the 3936358 Filler Cap have environmental considerations. Cummins Inc. is committed to minimizing the environmental footprint of its products through design and manufacturing practices. This includes using recyclable materials where possible and ensuring that the production process is as efficient and low-waste as practicable. Proper disposal of the cap, in accordance with local regulations, is also important to reduce environmental impact.

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 known for its commitment to innovation, quality, and customer satisfaction in the commercial vehicle industry. The company’s product range includes a variety of components and systems designed to enhance the performance, efficiency, and reliability of commercial trucks and other vehicles.

Cummins Engine Part 3936358: Filler Cap Compatibility

The Cummins part number 3936358, a Filler Cap, is designed to fit a variety of Cummins engines. This filler cap is a critical component for maintaining the proper fuel and coolant levels in the engine. Below is a detailed breakdown of the engines with which this filler cap is compatible:

ISC Series Engines

• ISC CM2150
• ISC CM554
• ISC CM850
• ISC8.3 CM2250

The ISC series engines are known for their robust design and reliability. The filler cap ensures that the fuel tank remains sealed, preventing contamination and ensuring optimal engine performance.

ISL Series Engines

• ISL CM2150
• ISL CM554
• ISL G CM2180
• ISL9 CM2150 SN
• ISL9 CM2250

The ISL series engines are designed for heavy-duty applications and are widely used in various industries. The filler cap for these engines is engineered to withstand the rigors of demanding environments while maintaining a secure seal.

ISM Series Engines

• ISM CM570

The ISM series engines are known for their efficiency and power. The filler cap for these engines ensures that the fuel system remains uncontaminated, contributing to the engine’s overall performance and longevity.

C Series Engines

• 6C8.3
• C GAS PLUS CM556
• C8.3 G
• L GAS PLUS CM556

The C series engines are versatile and used in a variety of applications. The filler cap for these engines is designed to fit snugly, ensuring that the fuel tank remains sealed and protected from external contaminants.

By ensuring that the filler cap fits correctly with these engines, it helps maintain the integrity of the fuel system, which is crucial for the engine’s performance and longevity.

Role of Part 3936358 Filler Cap in Engine Systems

The Part 3936358 Filler Cap is an essential component in the lubrication system of an engine, ensuring the proper functioning and longevity of various engine components.

In the context of the oil fill arrangement, the Filler Cap serves as the primary access point for adding lubricant to the engine. This is vital for maintaining the correct oil level, which is necessary for the efficient operation of the cylinder block and other moving parts.

The Filler Cap is often integrated with the cover of the engine, providing a sealed environment that prevents contaminants from entering the lubrication system. This seal is particularly important around the hand hole area, where maintenance personnel may need to access internal components.

When considering the oil filler connection and oil filler tube, the Filler Cap ensures a secure fit that prevents oil leaks. This is especially important during engine operation when vibrations and movements could otherwise compromise the seal.

In conjunction with kit, 50dn drain and kit, 50dn oil drain, the Filler Cap plays a role in the overall maintenance routine. These kits are used for draining old oil, and the Filler Cap must be removed to facilitate this process. Ensuring a tight seal when the cap is replaced is essential for preventing oil loss and maintaining system integrity.

Overall, the Part 3936358 Filler Cap is a key component that interacts with multiple elements of the engine’s lubrication system, contributing to the efficient and reliable operation of the engine.

Conclusion

The Cummins 3936358 Filler Cap is a vital component in the fueling and lubrication systems of commercial trucks. Its design and functionality contribute to the efficient operation, reliability, and environmental compliance of these vehicles. Proper installation, maintenance, and care of this part are essential to ensure its longevity and performance. Cummins Inc.’s commitment to quality and innovation is reflected in the design and compatibility of this filler cap with a variety of their engines.