3967108
Spring Washer
Cummins®

Introduction

The Spring Lock Washer 3967108, a specialized component from Cummins, is integral to the commercial truck industry. Designed for commercial trucks, this washer enhances the integrity and reliability of fastening systems. Cummins’ reputation for quality and innovation is reflected in the 3967108 Spring Lock Washer, which offers superior performance in demanding truck applications ¹.

Basic Concepts of Spring Lock Washers

Spring lock washers are mechanical devices used in fastening applications to prevent loosening of nuts and bolts due to vibration or fluctuating loads. They feature a split in the outer diameter, which, when compressed under a bolt or nut, creates tension that grips the mating surfaces. This design helps maintain the torque applied to the fastener, ensuring a secure connection over time ².

Purpose of the 3967108 Spring Lock Washer

The 3967108 Spring Lock Washer is engineered to enhance the fastening process in commercial trucks. It is utilized in critical components where secure and reliable fastening is paramount. By providing additional tension and resistance to loosening, this washer contributes to the overall stability and safety of truck operations. Its application is particularly important in areas subjected to significant vibration or dynamic loads ³.

Key Features

The 3967108 Spring Lock Washer is distinguished by several key features. Its design includes a precise split that ensures optimal tension when in use. The washer is made from high-quality materials, typically steel, which offers durability and resistance to wear. Additionally, it may feature a unique tooth profile or serrations that enhance its gripping capability, setting it apart from standard washers.

Benefits of Using the 3967108 Spring Lock Washer

Utilizing the 3967108 Spring Lock Washer offers several advantages. It provides improved vibration resistance, which is crucial in the dynamic environment of commercial trucks. The washer also enhances load distribution across the fastening area, reducing the risk of component failure. Furthermore, it increases fastening security, ensuring that critical connections remain intact under varying operational conditions.

Installation Guidelines

Proper installation of the 3967108 Spring Lock Washer is vital for its effectiveness. It should be placed under the nut or bolt head, with the split oriented perpendicular to the applied force. This orientation maximizes the washer’s tensioning effect. Care should be taken to avoid over-tightening, which can lead to distortion or failure of the washer. Following manufacturer guidelines for torque specifications ensures optimal performance.

Troubleshooting and Maintenance

Regular inspection of the 3967108 Spring Lock Washer is recommended to identify signs of wear, corrosion, or improper installation. Common issues include deformation of the washer or loss of tension, which can compromise fastening security. Addressing these issues promptly, through replacement or re-torquing, helps maintain the integrity of the fastening system. Routine maintenance checks are advised to ensure continued reliable operation.

Compatibility and Application

The 3967108 Spring Lock Washer is compatible with a range of truck models and components, demonstrating its versatility in various truck systems. Its application is widespread across the industry, highlighting its importance in maintaining the performance and safety of commercial trucks.

Cummins: A Brief Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history of innovation and quality, Cummins has established a strong reputation in the commercial truck industry. The company’s product range includes a variety of components designed to enhance the performance, efficiency, and reliability of trucks. Cummins’ commitment to excellence is evident in every product it offers, including the 3967108 Spring Lock Washer.

Spring Lock Washer 3967108 Compatibility with Cummins Engines

The Spring Lock Washer 3967108, manufactured by Cummins, is a crucial component designed to ensure secure fastening in various engine applications. This part is engineered to fit seamlessly with a range of Cummins engines, providing reliable performance and durability.

ISB/ISD Series

• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISB3.9 CM2220 B107
• ISB5.9 CM2880 B127
• ISD4.5 CM2220 D108

These engines benefit from the Spring Lock Washer 3967108, which ensures that bolts and screws remain tightly secured, preventing loosening due to vibrations and thermal expansion.

ISBE Series

• ISBE CM2150
• ISBE CM800
• ISBE4 CM850

The ISBE series engines also utilize the Spring Lock Washer 3967108, ensuring that critical components remain fastened securely, contributing to the overall reliability and performance of the engine.

L Series

• L8.9
• L8.9 CM2670 L134C
• L8.9 L121
• L8.9G CMOH2.0 L125B
• L9 CM2670 L128B
• L9.5 L117

The L series engines, known for their robust design, incorporate the Spring Lock Washer 3967108 to maintain the integrity of bolted connections, ensuring that the engine operates smoothly and efficiently.

ISL Series

• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

The ISL series engines also rely on the Spring Lock Washer 3967108 to secure various components, enhancing the engine’s durability and performance.

Other Cummins Engines

• 4B3.9
• 6B5.9
• 6C8.3
• B5.9 CM2670 B166C
• B5.9 GAS PLUS CM556
• B6.7 G CMOH6.0 B125
• C GAS PLUS CM556
• D4.0 CM2620 D103B
• F4.5 CM2620 F139B

These engines, while diverse in their specifications, all utilize the Spring Lock Washer 3967108 to maintain secure fastenings, ensuring optimal performance and longevity.

Role of Part 3967108 Spring Lock Washer in Engine Systems

The Part 3967108 Spring Lock Washer is instrumental in ensuring the secure and reliable operation of various engine components. Its application spans across multiple systems, enhancing the integrity and efficiency of the engine assembly.

Adapter and Front Drive Systems

In the adapter and front drive systems, the Spring Lock Washer is used to maintain the proper tension and alignment of components. It ensures that the adapter remains firmly attached to the front drive, preventing any unwanted movement that could lead to misalignment or failure.

Belt Tensioner Bracket

Within the belt tensioner bracket, the Spring Lock Washer plays a key role in securing the tensioner mechanism. This ensures consistent belt tension, which is vital for the efficient operation of accessories driven by the belt, such as the alternator and water pump.

Brake Systems

In brake systems, the Spring Lock Washer is employed to secure brake components, such as calipers and brackets, to the chassis. This ensures that the brake system remains stable under varying conditions, contributing to reliable braking performance.

Exhaust and Cleaner Systems

For the exhaust system, the Spring Lock Washer is used at connection points, such as the exhaust outlet, to ensure a tight seal. This prevents exhaust leaks, which can affect engine performance and emissions. Similarly, in air cleaner systems, it secures connections, maintaining the integrity of the air intake path.

Clutch and Compressor Systems

In the rear clutch system, the Spring Lock Washer helps in maintaining the proper tension of the clutch components. For air compressors, whether they are air or refrigerant types, the washer ensures that connections, such as the water inlet and outlet, remain secure, preventing leaks and ensuring efficient operation.

Connection and Control Systems

At various connection points, including the water inlet and outlet, the Spring Lock Washer ensures that fittings remain tight and leak-free. In control systems, such as the manual throttle lever, it secures components, ensuring precise control and operation.

Coupling and Drive Systems

In fuel pump and refrigerant compressor couplings, the Spring Lock Washer ensures that connections are maintained under operational stresses. For the refrigerant compressor drive, it secures the drive mechanism, ensuring consistent compressor operation.

Engine and Ground Systems

The Spring Lock Washer is used in engine grounding points to ensure a solid electrical connection, which is essential for proper engine operation and diagnostics. In engine control wiring harnesses, it secures connections, preventing intermittent issues that could arise from loose fittings.

Idler Pulley and Mounting Systems

For idler pulleys, the Spring Lock Washer ensures that the pulley remains properly tensioned and aligned. In engine brake and refrigerant compressor mountings, it secures the components to the engine, ensuring they operate within specified parameters.

Auxiliary Pump and Base Rail Systems

In auxiliary pump systems, the Spring Lock Washer secures pump connections, ensuring reliable fluid delivery. On the base rail, it ensures that mounting points remain stable, contributing to the overall structural integrity of the engine installation.

Throttle Lever Systems

Finally, in throttle lever systems, the Spring Lock Washer ensures that the lever remains securely attached, allowing for precise control of engine speed and performance.

Conclusion

The 3967108 Spring Lock Washer by Cummins is a critical component in the commercial truck industry, offering enhanced fastening security and reliability. Its application across various engine systems underscores its importance in maintaining the performance and safety of commercial trucks. Proper installation, regular maintenance, and understanding its role in different systems are essential for maximizing the benefits of this Cummins part.