5686288
Injector Fuel Supply Connector
Cummins®

The Cummins Injector Fuel Supply Connector, part number 5686288, is a critical component in the fuel delivery system of commercial trucks. Cummins, a prominent manufacturer in the commercial truck industry, produces a variety of parts aimed at enhancing the efficiency and reliability of diesel engines. This part plays a significant role in ensuring a consistent and pressurized fuel supply to the injectors.

Basic Concepts of Injector Fuel Supply Connector

Injector fuel supply connectors are designed to facilitate the transfer of fuel from the fuel rail to the injectors in diesel engines. They ensure a consistent and pressurized fuel supply, which is essential for the proper functioning of fuel injectors. These connectors are engineered to withstand high pressures and temperatures, ensuring reliable fuel delivery under various operating conditions ¹.

Function and Operation

The Injector Fuel Supply Connector operates by connecting the fuel rail to the fuel injectors. It allows pressurized fuel to flow from the fuel rail to the injectors, where it is atomized and injected into the combustion chamber. This component interacts closely with the fuel injectors and fuel rail, ensuring that fuel is delivered efficiently and at the correct pressure. The design of the connector helps maintain a sealed system, preventing fuel leaks and ensuring optimal engine performance ².

Purpose of the Injector Fuel Supply Connector

The primary role of the Injector Fuel Supply Connector is to ensure efficient fuel delivery to the injectors. By maintaining a consistent fuel supply, it contributes to the overall performance and efficiency of the engine. This component is designed to handle the high pressures and temperatures within the fuel system, ensuring reliable operation even under demanding conditions ³.

Key Features

The Injector Fuel Supply Connector is characterized by several key features that enhance its performance and durability. Its design incorporates materials that are resistant to corrosion and wear, ensuring longevity. The connector is engineered to provide a secure seal, preventing fuel leaks. Additionally, it is designed to withstand the high pressures and temperatures typical of diesel engine fuel systems.

Benefits

The advantages of using the Injector Fuel Supply Connector include improved fuel efficiency, enhanced engine performance, and increased reliability. By ensuring a consistent and pressurized fuel supply, this component helps the engine operate more efficiently. Its robust design and high-quality materials contribute to its durability, making it a reliable choice for commercial truck applications.

Installation Considerations

Proper installation of the Injector Fuel Supply Connector is crucial for its effective operation. Guidelines for installation include adhering to torque specifications to ensure a secure fit without over-tightening, which could damage the connector. Sealing procedures should be followed to prevent fuel leaks. Additionally, compatibility with other fuel system components should be verified to ensure seamless integration.

Troubleshooting and Maintenance

Diagnosing common issues with the Injector Fuel Supply Connector may involve checking for leaks, inspecting for signs of corrosion, and ensuring that all connections are secure. Regular maintenance procedures, such as cleaning and inspecting the connector for wear, can help ensure optimal performance and longevity. Addressing issues promptly can prevent more significant problems down the line.

Common Failure Modes

Typical failure modes for the Injector Fuel Supply Connector include leaks, corrosion, and mechanical damage. Leaks may occur due to worn seals or improper installation. Corrosion can result from exposure to moisture or incompatible materials. Mechanical damage may arise from over-tightening during installation or from physical impact. Recommended corrective actions include replacing worn seals, addressing corrosion through cleaning and protective coatings, and repairing or replacing damaged components.

Regulatory Compliance

The Injector Fuel Supply Connector must meet various regulatory standards, including emissions regulations and safety standards. Compliance with these regulations ensures that the component contributes to the overall environmental performance and safety of the vehicle. Cummins designs its components to meet or exceed these standards, ensuring they are suitable for use in commercial trucks.

About Cummins

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 has established a reputation for quality and reliability in the commercial truck industry. The company offers a wide range of products designed to meet the demanding requirements of commercial applications, ensuring optimal performance and durability.

Cummins Injector Fuel Supply Connector Compatibility

The Cummins Injector Fuel Supply Connector, part number 5686288, is designed to fit a variety of Cummins engines, ensuring a secure and reliable connection for fuel supply. This part is crucial for maintaining the integrity of the fuel system and ensuring optimal engine performance. Below is a detailed overview of the engines with which this connector is compatible:

Compatible Engines

• 6C8.3
• ISB/ISD4.5 CM2150 B119
• ISBE4 CM850
• ISD4.5 CM2220 D108
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138
• L8.9 CM2670 L134C
• L9 CM2670 L128B
• QSB6.7 CM850(CM2850)
• QSB7 CM2880 B117
• QSC8.3 CM2880 C102
• QSL8.9 CM2150 L141
• QSL9 CM850(CM2850)
• QSL9.3 CM2880 L113

Grouping of Compatible Engines

The compatibility of the injector fuel supply connector can be grouped based on the engine series and common features:

• ISB/ISD Series

  • ISB/ISD4.5 CM2150 B119
  • ISD4.5 CM2220 D108
  • QSB6.7 CM850(CM2850)
  • QSB7 CM2880 B117

• ISL Series

  • ISL9 CM2150 SN
  • ISL9.5 CM2880 L138

• L Series

  • L8.9 CM2670 L134C
  • L9 CM2670 L128B

• QSC/QSL Series

  • QSC8.3 CM2880 C102
  • QSL8.9 CM2150 L141
  • QSL9 CM850(CM2850)
  • QSL9.3 CM2880 L113

• Others

  • 6C8.3
  • ISBE4 CM850

This connector is engineered to meet the specific requirements of each engine model, ensuring a precise fit and reliable performance across the board.

Conclusion

The Cummins Injector Fuel Supply Connector, part number 5686288, is a vital component in the fuel delivery system of commercial trucks. Its design ensures a consistent and pressurized fuel supply to the injectors, contributing to improved fuel efficiency, enhanced engine performance, and increased reliability. Proper installation, regular maintenance, and prompt troubleshooting are essential to ensure the longevity and optimal performance of this part.