4940117
Studded Flange Cap Screw
Cummins®

Introduction to Studded Flange Cap Screws

Studded flange cap screws are specialized fasteners designed to secure flanges, which are flat, circular disks used to connect pipes, tubes, and other components. These screws feature a shank with studs that provide additional strength and durability. The studded design allows for a secure and tight connection, preventing leaks and ensuring the integrity of the system ¹.

The Role of the 4940117 Studded Flange Cap Screw in Truck Engines

The 4940117 studded flange cap screw by Cummins is a critical component in truck engines, particularly in the connection of various engine parts. This Cummins part ensures that flanges are tightly secured, which is essential for maintaining engine performance and preventing leaks. The studded design provides extra grip and stability, making it ideal for high-stress applications ².

How the 4940117 Studded Flange Cap Screw Works

The 4940117 studded flange cap screw operates by threading into a pre-tapped hole in the flange. The shank of the screw has raised studs that engage with the flange, creating a secure bond. The cap screw is then tightened using a wrench or socket, which compresses the flange against the mating surface, ensuring a leak-proof seal. This process is crucial in maintaining the structural integrity of the engine and preventing any potential failures ³.

Importance of the 4940117 Studded Flange Cap Screw in Truck Operations

In commercial truck operations, the reliability of engine components is paramount. The 4940117 studded flange cap screw plays a vital role in ensuring that flanges are securely fastened, which is essential for the efficient operation of the engine. This part is used in various applications, including connecting exhaust systems, fuel lines, and other critical components. A failure in these connections can lead to significant downtime and costly repairs.

Troubleshooting and Maintenance of the 4940117 Studded Flange Cap Screw

Regular maintenance and inspection of the 4940117 studded flange cap screw are essential to ensure its longevity and performance. Here are some troubleshooting and maintenance tips:

1. Inspection: Regularly inspect the screws for signs of wear, corrosion, or damage. Look for any cracks, deformations, or looseness in the threads or studs.
2. Torque Check: Ensure that the screws are tightened to the manufacturer’s specified torque settings. Over-tightening can strip the threads, while under-tightening can lead to leaks.
3. Cleaning: Keep the screws clean and free from debris. Use a wire brush or compressed air to remove any dirt or grime that may affect the sealing.
4. Replacement: Replace any damaged or worn screws immediately to prevent potential failures. It is better to err on the side of caution and replace a screw than to risk a failure in the field.

Cummins: A Leader in Truck Engine Components

Cummins is a renowned manufacturer of truck engines and related components. With a legacy of innovation and quality, Cummins provides a wide range of parts designed to meet the demanding needs of commercial truck operations. The 4940117 studded flange cap screw is just one example of Cummins’ commitment to delivering reliable and high-performance components.

Cummins Engine Compatibility with Part 4940117

The Studded Flange Cap Screw, part number 4940117, manufactured by Cummins, is a critical component in various engine models. This part is designed to secure flanges and caps, ensuring a tight and reliable seal, which is essential for maintaining engine integrity and performance.

Engines Compatible with Part 4940117

B4.5 Series:

• B4.5 CM2350 B129B
• B4.5 RGT

B5.9 and B6.7 Series:

• B5.9 CM2670 B166C
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C

D4.0 Series:

• D4.0 CM2620 D103B

F2.8 and F3.8 Series:

• F2.8 CM2620 F135B
• F3.8 CM2350 F120B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102

F4.5 Series:

• F4.5 CM2620 F139B
• F4.5 CM2620 F141C

ISB/ISD Series:

• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISD4.5 CM2220 D108

ISBE Series:

• ISBE CM2150
• ISBE4 CM850

ISF Series:

• ISF2.8 CM2220 F117
• ISF2.8 CM2220 F129
• ISF3.8 CM2220 AN
• ISF3.8 CM2220 F103
• ISF3.8 CM2350 F109

ISB Series:

• ISB3.9 CM2220 B107
• ISB4.5 CM2350 B104

This part is integral to the assembly and maintenance of these engines, ensuring that flanges and caps are securely fastened, which is vital for the operational efficiency and longevity of the engines.

Role of Part 4940117 Studded Flange Cap Screw in Engine Systems

The 4940117 Studded Flange Cap Screw is integral to the secure assembly and operation of various engine components. In the Air Heater Starting Aid system, this screw ensures a tight and reliable connection between the air heater and the manifold, facilitating efficient heat transfer to aid in engine starting under cold conditions.

In the Air Intake Manifold assembly, the 4940117 screw plays a significant role in maintaining the structural integrity of the manifold. It secures the manifold to the engine block, ensuring a leak-free seal that is essential for optimal air-fuel mixture distribution.

Furthermore, within the Air Intake system, this screw is used to fasten components such as sensors and additional intake parts to the manifold. This ensures that all elements are firmly in place, contributing to the overall efficiency and performance of the air intake process.

The consistent use of the 4940117 screw across these systems highlights its importance in maintaining the precise alignment and secure attachment of critical engine components, thereby supporting the engine’s reliable operation.

Conclusion

The 4940117 studded flange cap screw by Cummins is an essential component in truck engines, ensuring the secure connection of flanges and preventing leaks. Understanding the role and maintenance of these screws is crucial for engineers, mechanics, and fleet operators to ensure the longevity and performance of their trucks. By following proper maintenance practices and using high-quality components like the 4940117 studded flange cap screw, operators can minimize downtime and keep their fleets running smoothly.