3165981
Lock Washer
Cummins®

The 3165981 Lock Washer, a component manufactured by Cummins, is integral to fastening systems within commercial trucks. This Cummins part is designed to maintain the integrity of bolted connections, which is vital in the dynamic and often harsh environments encountered by commercial vehicles.

Basic Concepts of Lock Washers

Lock washers are specialized washers used in mechanical assemblies to prevent the loosening of fasteners. They introduce tension or deformation to the fastener, creating additional friction and resistance to movement. This is crucial in applications where vibrations or dynamic loads are present, as these can gradually loosen standard washers and nuts over time ¹.

Purpose of the 3165981 Lock Washer in Truck Operations

The 3165981 Lock Washer is designed to enhance the security of bolted connections in commercial trucks. It is utilized in environments where vibrations and dynamic loads are common, such as in the engine compartment, chassis, and other critical areas of the truck. By preventing fastener loosening, this lock washer contributes to the overall safety and reliability of the vehicle ².

Key Features

The 3165981 Lock Washer is characterized by its robust material composition and design elements tailored for durability and performance. It is made from high-strength materials that can withstand the rigors of commercial truck operations. The design includes features that increase friction and resistance to movement, ensuring that fasteners remain secure under various conditions.

Benefits

Using the 3165981 Lock Washer offers several advantages. It provides improved fastening security by preventing the loosening of bolts and nuts, which is vital in maintaining the structural integrity of commercial trucks. Additionally, it offers resistance to vibration, a common issue in truck operations, and demonstrates longevity even in harsh operating conditions.

Installation Guidelines

Proper installation of the 3165981 Lock Washer is key to its effectiveness. It should be placed under the nut or bolt head, ensuring that it is correctly aligned with the fastener. It is important to follow manufacturer guidelines for torque specifications to ensure that the fastener is tightened to the appropriate level without over-tightening, which could damage the washer or the fastener.

Troubleshooting and Maintenance

To maintain the performance of the 3165981 Lock Washer, regular inspections should be conducted to check for signs of wear or damage. If issues are identified, such as deformation or corrosion, the washer should be replaced to ensure continued fastening security. Proper maintenance practices, including keeping the washer clean and free from debris, will also contribute to its longevity.

Common Applications

The 3165981 Lock Washer is commonly used in a variety of applications within commercial trucks. It is often found in the engine compartment, where it secures critical components, and in the chassis, where it helps to maintain the structural integrity of the vehicle. Its versatility and reliability make it a preferred choice for many fastening applications in the industry.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a rich history and a broad product range, Cummins has established a strong reputation in the commercial truck industry for producing high-quality, reliable components that meet the demanding requirements of commercial vehicle operations.

Cummins Lock Washer 3165981 Compatibility

The Cummins Lock Washer part number 3165981 is designed to fit a variety of Cummins engines, ensuring secure fastening and preventing loosening due to vibration. This part is crucial in maintaining the integrity of bolted connections in engine assemblies.

K-Series Engines

• K19: The lock washer is compatible with the K19 engine, providing essential support in high-stress environments.
• K38: Similarly, the K38 engine benefits from the use of this lock washer, ensuring that critical components remain tightly fastened.
• K50: The K50 engine also utilizes the 3165981 lock washer, maintaining the reliability of its bolted connections.

N-Series Engines

• N14 MECHANICAL: The N14 MECHANICAL engine incorporates the 3165981 lock washer to secure various parts, enhancing the engine’s overall performance and longevity.
• NH/NT 855: This engine model also relies on the lock washer to maintain the integrity of its bolted assemblies.

QSK Engines

• QSK19 CM850 MCRS: The QSK19 CM850 MCRS engine uses the 3165981 lock washer to ensure that all bolted connections remain secure, even under heavy operational loads.
• QSK38 CM850 MCRS: The QSK38 CM850 MCRS engine similarly benefits from the use of this lock washer, providing reliable fastening in demanding conditions.

QSNT Engines

• QSNT14 CM876 N102: The QSNT14 CM876 N102 engine incorporates the 3165981 lock washer to maintain the security of its bolted connections, ensuring consistent performance and reliability.

Role of Part 3165981 Lock Washer in Engine Systems

The part 3165981 Lock Washer is an essential component in ensuring the secure attachment and stability of various engine system components. Its primary function is to prevent loosening of fasteners due to vibration and thermal expansion, which are common in engine environments.

Accessories

In the context of engine accessories, the Lock Washer is utilized to secure bolts and nuts that hold accessories such as alternators, water pumps, and power steering pumps to the engine block or mounting brackets. This ensures that these accessories remain firmly in place, reducing the risk of detachment or misalignment during operation.

Exhaust Outlet

For the exhaust outlet, the Lock Washer plays a significant role in maintaining the integrity of the connection between the exhaust manifold and the exhaust pipe. By preventing the bolts from loosening, it ensures a consistent and secure seal, which is vital for efficient exhaust flow and reduced emissions.

Connection Points

At various connection points throughout the engine system, such as between the engine block and transmission, or within the engine itself where components like the cylinder head are bolted on, the Lock Washer helps to maintain tight and reliable fastening. This is particularly important in high-stress areas where vibrations are more pronounced.

Exhaust Accessory Mounting

When mounting exhaust accessories like catalytic converters or resonators, the Lock Washer ensures that the mounting brackets and clamps remain securely fastened. This is important for the overall performance and durability of the exhaust system, as well as for compliance with emissions regulations.

Kit Installations

In engine installation kits, which often include a variety of fasteners and mounting hardware, the Lock Washer is a standard component. It is used to enhance the security of all bolted connections, from the engine mounts to the accessory brackets, ensuring that the entire engine system is robust and reliable.

Muffler Attachments

Finally, in the attachment of the muffler to the exhaust system, the Lock Washer is employed to secure the clamps and brackets that hold the muffler in place. This is essential for maintaining the structural integrity of the exhaust system and ensuring that the muffler operates efficiently without the risk of dislodgment.

Conclusion

The 3165981 Lock Washer by Cummins is a critical component in the maintenance of secure and reliable fastening systems within commercial trucks. Its design and material composition are tailored to withstand the harsh conditions and dynamic loads encountered in truck operations. Proper installation, regular maintenance, and understanding its applications across various engine systems are essential for maximizing the benefits of this part. Cummins’ reputation for producing high-quality, reliable components is evident in the performance and durability of the 3165981 Lock Washer.