3906216
Hexagon Flange Nut
Cummins®

Understanding the Cummins 3906216 Hexagon Flange Nut in Commercial Truck Engines

Introduction to Hexagon Flange Nuts

Hexagon flange nuts are critical in the assembly of commercial truck engines. Their hexagonal shape and flange design provide a larger bearing surface for torque application, ensuring a secure and stable connection. This is essential for the high-stress environments typical of commercial truck engines ¹.

The Role of the Cummins 3906216 Hexagon Flange Nut

The Cummins 3906216 Hexagon Flange Nut is engineered to withstand the demanding conditions of heavy-duty truck engines. It is primarily used in applications requiring high torque and exceptional durability. This part secures various engine components, ensuring they remain firmly fastened under the rigorous operational conditions of commercial trucks ².

Functionality and Importance in Engine Operation

In engine operation, the 3906216 Hexagon Flange Nut is vital for maintaining the integrity of engine assemblies. It provides a robust connection that prevents loosening due to vibrations and thermal expansion, common in heavy-duty environments. This reliability is essential for the safe and efficient operation of commercial trucks ³.

Troubleshooting Common Issues

Mechanics and engineers should be vigilant about common issues associated with the 3906216 Hexagon Flange Nut:

• Loosening Under Operation: This may result from insufficient torque during installation or material fatigue. Adhering to proper torque specifications and using high-quality nuts can mitigate this issue.
• Damage or Deformation: Physical damage can compromise the nut’s integrity. Regular inspections and timely replacements are recommended.
• Corrosion: Exposure to harsh environments can lead to corrosion. Using corrosion-resistant materials and applying protective coatings can help extend the nut’s life.

Maintenance Best Practices

Regular maintenance is crucial for the longevity and performance of the 3906216 Hexagon Flange Nut:

• Routine Inspections: Regularly check for signs of wear, damage, or corrosion. Early detection can prevent more significant problems.
• Proper Torque Application: Always adhere to the recommended torque settings during installation or reassembly. Over-tightening can cause damage, while under-tightening can lead to loosening.
• Cleaning and Lubrication: Keeping the nut clean and applying appropriate lubricants can prevent corrosion and ensure smooth operation.

About Cummins

Cummins is a global leader in power solutions, renowned for its diesel and alternative fuel engines, engine-related technology, and parts and service support. Known for high-quality and reliable products, Cummins is a trusted name in the commercial truck industry. The 3906216 Hexagon Flange Nut exemplifies Cummins’ commitment to providing durable and high-performance parts for heavy-duty applications ⁴.

Hexagon Flange Nut 3906216 Compatibility with Cummins Engines

The Hexagon Flange Nut 3906216, manufactured by Cummins, is a critical component that fits a variety of Cummins engines. This part is designed to secure and stabilize various engine parts, ensuring the engine operates smoothly and efficiently. Below is a detailed look at the engines with which this flange nut is compatible.

Compatible Engines

• 15N CM2380 M104B
• 4B3.9
• 6B5.9
• 6C8.3
• B3.3
• B4.5
• B4.5 CM2350 B129B
• B5.6 CM2670 B152B
• B5.9 CM2670 B166C
• B5.9 G
• B5.9 GAS PLUS CM556
• B6.7 CM2350 B135B
• B6.7 CM2670 B153B
• B6.7 CM2670 B164C
• C GAS PLUS CM556
• C8.3 G
• D4.0 CM2620 D103B
• F2.8 CM2620 F135B
• F3.8 CM2350 F128C
• F3.8 CM2620 F137B
• F3.8 F102
• F4.5 CM2620 F139B
• F4.5 CM2620 F141C
• G8.3
• G8.3 CM558

Grouping of Compatible Engines

• 4-Cylinder Engines:

  • 4B3.9
  • B3.3
  • B4.5
  • B4.5 CM2350 B129B
  • F3.8 CM2350 F128C
  • F3.8 CM2620 F137B
  • F3.8 F102
  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C

• 6-Cylinder Engines:

  • 6B5.9
  • 6C8.3
  • B5.6 CM2670 B152B
  • B5.9 CM2670 B166C
  • B5.9 G
  • B5.9 GAS PLUS CM556
  • B6.7 CM2350 B135B
  • B6.7 CM2670 B153B
  • B6.7 CM2670 B164C
  • C GAS PLUS CM556
  • C8.3 G
  • G8.3
  • G8.3 CM558

• Other Engines:

  • 15N CM2380 M104B
  • D4.0 CM2620 D103B
  • F2.8 CM2620 F135B

This comprehensive compatibility ensures that the Hexagon Flange Nut 3906216 can be used across a wide range of Cummins engines, providing a reliable solution for securing and stabilizing engine components.

Role of Part 3906216 Hexagon Flange Nut in Engine Systems

The 3906216 Hexagon Flange Nut is an essential component in securing various parts within engine systems, ensuring stability and proper function of the assemblies it is part of. Here’s how it integrates with several key components:

Air Systems

• Air Heater Starting and Air Intake Heater: The Hexagon Flange Nut is used to secure the mounting points of these heaters, ensuring they remain firmly in place during operation. This is vital for the consistent performance of the air heating system, which is necessary for efficient engine starting in cold conditions.
• Air Control Valve and Air Transfer Tube: These components require secure mounting to maintain the integrity of the air flow system. The Hexagon Flange Nut plays a role in fastening these parts, ensuring they do not shift or vibrate excessively, which could lead to air flow disruptions.

Cooling and Lubrication

• Compressor Coolant Arrangement and Pan Oil Mounting: The Hexagon Flange Nut is instrumental in securing the coolant arrangement and oil pan, which are critical for maintaining the engine’s temperature and lubrication. Proper fastening ensures these systems operate under the correct pressures and temperatures.

Electrical and Electronic Systems

• Harness (Electronic Control Module Wiring) and Instrument Panels: The nut is used in securing wiring harnesses and instrument panels, ensuring that electrical connections remain intact and protected from environmental factors. This is important for the reliability of engine monitoring and control systems.
• Magnetic Switch and Magnetic Switch Mounting: These components are essential for the operation of various engine functions. The Hexagon Flange Nut ensures that these switches are securely mounted, preventing any electrical issues that could arise from loose connections.

Exhaust and Emission Control

• Exhaust Gas Recirculation Module and Recirculation Exhaust: The Hexagon Flange Nut is used in the assembly of the exhaust gas recirculation module, helping to reduce emissions by recirculating exhaust gases back into the intake. Secure fastening is necessary to maintain the efficiency of this system.
• Plumbing (Exhaust Recirculation Air): This component requires stable connections to function correctly. The Hexagon Flange Nut ensures that all plumbing connections are secure, preventing leaks and ensuring proper air flow.

Mechanical and Hydraulic Systems

• Hydraulic Pump and Vacuum/Hydraulic Pump: These pumps require stable mounting to operate efficiently. The Hexagon Flange Nut is used to secure these pumps, ensuring they can handle the pressures and flows necessary for their function.
• Motor (Starting) and Engine Monitor Mounting: The starting motor and engine monitor need to be securely mounted to function correctly. The Hexagon Flange Nut ensures these components are firmly in place, allowing for reliable engine starting and monitoring.

Noise Reduction and Miscellaneous

• Device (Noise Reduction) and Solenoid Assembly Bracket: These components benefit from the secure fastening provided by the Hexagon Flange Nut. Proper mounting is essential for the effective operation of noise reduction devices and the precise functioning of solenoid assemblies.

Conclusion

In summary, the 3906216 Hexagon Flange Nut is a versatile fastener that plays a significant role in the secure assembly and operation of various engine systems, contributing to the overall reliability and performance of the engine. Proper maintenance and understanding of its role are crucial for the efficient operation of commercial truck engines.