3679037
Banjo Connector Screw
Cummins®

The 3679037 Banjo Connector Screw is a critical component manufactured by Cummins for use in commercial trucks. This article provides a comprehensive overview of this Cummins part, detailing its function, key features, benefits, and maintenance suggestions.

Basic Concepts of Banjo Connector Screw

A banjo connector screw is a fitting used in hydraulic and fuel systems to connect hoses or pipes. It typically consists of a bolt with an integrated fitting that allows for secure attachment to a hose or pipe. The fitting is named for its resemblance to a small banjo, with a central bolt and flanged ends.

Function of the 3679037 Banjo Connector Screw

The 3679037 Banjo Connector Screw is essential in the hydraulic and fuel systems of commercial trucks, providing a secure connection point for hoses and pipes. It ensures the integrity of the fluid pathways, allowing for efficient transfer of hydraulic fluid or fuel under pressure.

Key Features

• Constructed from high-strength materials to withstand high pressure and harsh operating conditions ¹.
• Designed for easy installation and removal ².
• Features a sealing washer to prevent leaks at the connection point ³.
• Compatible with a variety of hose and pipe sizes commonly used in commercial trucks.

Benefits

• Enhances the reliability of fluid transfer systems by providing a secure and leak-proof connection.
• Durable construction ensures long service life even in demanding environments.
• Simplifies maintenance and repair procedures by allowing for quick disconnection and reconnection of hoses and pipes.

Troubleshooting and Maintenance

Regular inspection of the banjo connector screw for signs of wear, corrosion, or damage is recommended. Any leaks or loose connections should be addressed promptly to prevent fluid loss and system failure. When replacing the banjo connector screw, ensure that the sealing washer is in good condition and properly seated to maintain a leak-free seal.

Compatibility of Part 3679037 with Cummins Engines

The 3679037 Banjo Connector Screw is designed to fit seamlessly with a variety of Cummins engine models. This part is integral to the engine’s fuel and fluid systems, ensuring secure connections and preventing leaks.

ISX Series Engines

• ISX CM570
• ISX CM870
• ISX CM871
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

QSX Series Engines

• QSX15 CM2250
• QSX15 CM2250 ECF
• QSX15 CM2350 X105

X15 Series Engines

• X15 CM2350 X116B
• X15 CM2350 X123B
• X15 CM2450 X134B

Role of Part 3679037 Banjo Connector Screw in Engine Systems

The 3679037 Banjo Connector Screw is integral to the efficient operation of various engine components. Its primary function is to facilitate secure and leak-proof connections in fluid transfer systems within the engine.

Fuel Injection System

In the fuel injection system, the Banjo Connector Screw is used to connect the fuel injector to the fuel rail. This ensures a consistent and precise delivery of fuel to the engine piston, enhancing combustion efficiency and overall engine performance.

Oil Cooling System

For the piston cooling nozzle, the Banjo Connector Screw plays a significant role in the oil cooling system. It connects the oil supply line to the nozzle, allowing pressurized oil to be sprayed onto the underside of the piston. This helps in dissipating heat from the piston, reducing thermal stress and improving the longevity of the connecting rod and piston assembly.

Cylinder Block and Hardware Integration

In the cylinder block and its associated hardware kit, the Banjo Connector Screw is employed to connect various oil passages and coolant lines. This ensures that the cylinder block receives adequate lubrication and cooling, which are essential for maintaining optimal operating temperatures and reducing wear on the engine components.

Performance Parts

When it comes to performance parts, the Banjo Connector Screw is often used in high-performance fuel and oil systems. Its robust design ensures that even under extreme conditions, the connections remain intact, providing reliable fluid transfer. This is particularly important in performance engines where higher pressures and temperatures are common.

Conclusion

The 3679037 Banjo Connector Screw is a vital component in maintaining the integrity and efficiency of various engine systems. Its robust construction, ease of installation, and compatibility with a wide range of Cummins engines make it an essential part for ensuring secure and leak-proof connections in hydraulic and fuel systems.