3967110
Spring Washer
Cummins®

The Cummins 3967110 Spring Washer is a specialized component designed for use in commercial trucks. Its primary role is to enhance the reliability and performance of bolted connections in various truck assemblies. By maintaining consistent bolt tension and preventing loosening, this part contributes to the overall durability and safety of the vehicle.

Basic Concepts of Spring Washers

A spring washer, also known as a lock washer, is a type of washer designed to prevent loosening of fastened joints. It functions by exerting a spring force that keeps the bolt or nut in place, counteracting vibrations and other dynamic forces that could cause the fastener to loosen over time. Spring washers are commonly used in mechanical assemblies where secure and stable fastening is required ¹.

Purpose of the 3967110 Spring Washer

The Cummins 3967110 Spring Washer plays a significant role in the operation of commercial trucks by maintaining bolt tension and preventing loosening. This is particularly important in environments where trucks are subjected to constant vibrations and varying loads. By ensuring that bolted connections remain tight, the spring washer helps to maintain the integrity of critical components and assemblies within the truck.

Key Features

The Cummins 3967110 Spring Washer is characterized by several key features that enhance its performance. It is typically made from high-strength materials such as spring steel, which provides the necessary resilience and durability. The design of the washer includes a series of coils or toothed edges that create the spring effect, ensuring a consistent clamping force. Additionally, the washer is engineered to withstand the harsh conditions often encountered in commercial truck applications.

Benefits of Using Spring Washers

Incorporating spring washers like the Cummins 3967110 into truck assemblies offers several advantages. These include improved reliability of fastened joints, enhanced safety by preventing unexpected loosening, and reduced maintenance requirements. The consistent clamping force provided by the spring washer ensures that critical components remain securely fastened, contributing to the overall performance and longevity of the truck ².

Installation Guidelines

Proper installation of the Cummins 3967110 Spring Washer is crucial for its effective performance. To install the washer, place it under the bolt head or nut before tightening. Ensure that the washer is correctly aligned with the bolt and that it is not twisted or deformed. It is also important to use the appropriate torque specifications for the bolted connection to achieve the desired clamping force. Avoid over-tightening, as this can lead to damage or failure of the washer.

Troubleshooting Common Issues

Common problems associated with spring washers include corrosion and deformation. Corrosion can occur due to exposure to moisture or chemicals, while deformation may result from improper installation or excessive torque. To troubleshoot these issues, regularly inspect the washers for signs of wear or damage. If corrosion is detected, consider using washers made from corrosion-resistant materials. For deformation, ensure that the washer is correctly installed and that the appropriate torque is applied.

Maintenance Tips

Regular inspection and maintenance of spring washers are important to ensure optimal performance and longevity. Inspect the washers during routine maintenance checks for any signs of wear, corrosion, or deformation. Replace any damaged or worn washers promptly to maintain the integrity of the fastened joints. Additionally, ensure that all bolted connections are tightened to the manufacturer’s specified torque settings to prevent loosening and ensure consistent clamping force.

Cummins Corporation

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history dating back to 1919, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable components. The company’s product range includes a variety of engine, powertrain, and aftermarket parts designed to meet the demanding requirements of commercial truck applications.

Spring Washer 3967110 Compatibility with Cummins Engines

The Spring Washer part number 3967110, manufactured by Cummins, is a versatile component that can be utilized across a variety of Cummins engine models. This part is designed to provide a secure and reliable connection between different parts of the engine, ensuring optimal performance and longevity.

Compatibility with Specific Engine Models

• 4B3.9, 6B5.9, 6C8.3, B5.9 GAS PLUS CM556, ISB/ISD4.5 CM2150 B119, ISB3.9 CM2220 B107, ISB5.9 CM2880 B127, ISBE CM800, ISBE4 CM850, ISL9 CM2150 SN, ISL9.5 CM2880 L138, ISZ13 CM2150 Z105, L8.9, L8.9 CM2670 L134C, QSC8.3 CM2880 C102, QSL8.9 CM2150 L141, QSL9 CM850 (CM2850)

The Spring Washer 3967110 is compatible with a broad range of Cummins engines, including the 4B3.9, 6B5.9, 6C8.3, B5.9 GAS PLUS CM556, ISB/ISD4.5 CM2150 B119, ISB3.9 CM2220 B107, ISB5.9 CM2880 B127, ISBE CM800, ISBE4 CM850, ISL9 CM2150 SN, ISL9.5 CM2880 L138, ISZ13 CM2150 Z105, L8.9, L8.9 CM2670 L134C, QSC8.3 CM2880 C102, QSL8.9 CM2150 L141, and QSL9 CM850 (CM2850). This wide compatibility ensures that the washer can be used in various engine configurations and applications.

Grouping of Compatible Engines

• ISB/ISD Series:

  • ISB/ISD4.5 CM2150 B119
  • ISB3.9 CM2220 B107
  • ISB5.9 CM2880 B127

• ISBE Series:

  • ISBE CM800
  • ISBE4 CM850

• ISL Series:

  • ISL9 CM2150 SN
  • ISL9.5 CM2880 L138

• ISZ Series:

  • ISZ13 CM2150 Z105

• L Series:

  • L8.9
  • L8.9 CM2670 L134C

• QSC/QSL Series:

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

The Spring Washer 3967110 is engineered to fit seamlessly within the ISB/ISD, ISBE, ISL, ISZ, L, and QSC/QSL series engines, providing a critical function in maintaining the integrity of the engine’s mechanical components.

Role of Part 3967110 Spring Washer in Engine Systems

The part 3967110 Spring Washer is a versatile component that enhances the functionality and reliability of various engine systems. Its application spans across multiple subsystems, ensuring optimal performance and durability.

Accessories and Electric Starting

In the accessories and electric starting systems, the Spring Washer is employed to secure connections and maintain electrical integrity. It ensures that the electric starting components, such as solenoids and starter motors, are firmly attached, reducing the risk of loose connections that could lead to starting issues.

Fuel System

Within the fuel system, the Spring Washer plays a significant role in maintaining the tightness of fuel lines and connections. It prevents leaks by providing additional pressure against gaskets and seals, ensuring a consistent fuel supply to the engine.

Alternator Drive and Connection

For the alternator drive system, the Spring Washer is used in the connection points between the alternator and the engine. This helps in maintaining a stable and secure attachment, ensuring efficient power generation and transfer to the electrical system.

Exhaust Outlet and Control

In the exhaust system, particularly at the exhaust outlet, the Spring Washer assists in securing the manifold to the engine block. This connection is vital for controlling exhaust flow and reducing emissions. Additionally, in control systems such as the manual throttle lever, the Spring Washer ensures that the lever remains securely attached, providing precise control over engine speed.

Drive Systems

The Spring Washer is also integral in drive systems, such as the alternator and refrigerant compressor drives. It helps in maintaining the tension and alignment of belts, ensuring that these components operate efficiently without slippage or excessive wear.

Engine Fan and Heat Exchanger

In cooling systems, the Spring Washer is used in the engine fan and heat exchanger connections. It ensures that the fan remains securely attached to the engine, facilitating effective cooling. Similarly, in the heat exchanger, it maintains the integrity of connections, enhancing heat transfer efficiency.

Refrigerant Compressor Mounting

For the refrigerant compressor, the Spring Washer is crucial in the mounting process. It ensures that the compressor is firmly attached to the engine, allowing for stable operation and efficient refrigerant circulation.

Muffler and Water Pump

In the muffler, the Spring Washer secures the connections between the exhaust pipe and the muffler housing, preventing leaks and ensuring smooth exhaust flow. For the water pump, it maintains the tightness of connections, ensuring consistent coolant circulation and engine cooling.

Overall Engine Systems

Across all these engine systems, the part 3967110 Spring Washer contributes to the reliability and performance of the engine. By providing additional pressure and security to connections, it helps in preventing common issues such as leaks, loose components, and inefficient operation, thereby enhancing the overall durability and efficiency of the engine.

Conclusion

The Cummins 3967110 Spring Washer is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its role in maintaining bolt tension, preventing loosening, and enhancing the reliability of fastened joints is indispensable. Proper installation, regular maintenance, and prompt replacement of worn or damaged washers are essential to ensure the optimal performance and longevity of the vehicle. The wide compatibility of this Cummins part across various engine models further underscores its importance in the commercial truck industry.