3910266
Spring Washer
Cummins®

The Cummins Part #3910266 Spring Washer is a component designed for use in commercial trucks. Its primary function is to maintain bolt tension and prevent loosening, ensuring the integrity and safety of various truck assemblies. This washer is integral to the mechanical systems of commercial trucks, contributing to their overall performance and reliability.

Basic Concepts of Spring Washers

A spring washer, also known as a lock washer, is a type of washer designed with a split or helical shape. Its function is to provide tension that keeps fasteners secure, preventing them from loosening due to vibration or other dynamic forces. Spring washers are commonly used in mechanical assemblies where maintaining consistent bolt tension is crucial for safety and performance ¹.

Purpose of the 3910266 Spring Washer

This Cummins part plays a role in the operation of a truck by maintaining bolt tension and preventing loosening. This is particularly important in environments where vibrations and dynamic loads are common, such as in commercial trucks. By ensuring that bolts remain securely fastened, the spring washer helps to maintain the structural integrity of various truck components.

Key Features

This part is constructed from high-quality materials, typically steel, which provides durability and resistance to wear. Its design includes a split or helical shape that creates tension when the washer is compressed, enhancing its ability to keep fasteners secure. Additionally, the washer may feature unique attributes such as a corrosion-resistant coating, which further enhances its performance in demanding environments ².

Benefits

Using this part offers several benefits. It improves load distribution across the fastener, enhancing the overall stability of the assembly. The washer’s design contributes to enhanced durability, ensuring long-term reliability in various truck applications. Additionally, by preventing bolt loosening, it helps to maintain the safety and performance of the truck’s mechanical systems ³.

Installation Guidelines

To ensure optimal performance and longevity, this Cummins part should be installed according to the following guidelines:

1. Ensure the mating surfaces are clean and free of debris.
2. Place the spring washer under the bolt head or nut, ensuring it is properly aligned.
3. Tighten the bolt or nut to the manufacturer’s specified torque settings.
4. Verify that the washer is seated correctly and that there is no excessive play in the fastener.

Troubleshooting and Maintenance

Common issues with spring washers include wear and tear or improper installation. To identify these issues, regularly inspect the washers for signs of deformation or corrosion. If a washer appears damaged or worn, it should be replaced to maintain the integrity of the fastener. Additionally, ensuring that washers are installed correctly and torqued to the proper specifications can help prolong their lifespan ⁴.

Applications in Commercial Trucks

The 3910266 Spring Washer is commonly used in various critical areas of commercial trucks, including engine components, suspension systems, and other assemblies where maintaining bolt tension is vital. Its application in these areas helps to ensure the safety and reliability of the truck’s mechanical systems.

About Cummins

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions, including engines, filtration systems, and aftermarket parts. With a history of innovation and a commitment to quality, Cummins serves customers in over 190 countries and territories, providing reliable and efficient power solutions for various industries, including commercial trucking.

Spring Washer 3910266 Compatibility with Cummins Engines

The Spring Washer part number 3910266, manufactured by Cummins, is a versatile component that fits a variety of Cummins engines. This part is essential for ensuring proper assembly and function in numerous engine models. Below is a detailed breakdown of the engines with which this spring washer is compatible.

C Series Engines

• C GAS PLUS CM556
• C8.3 G
• G8.3

These engines, part of the C series, are known for their reliability and efficiency in various applications. The Spring Washer 3910266 is integral to the assembly of these engines, ensuring that components are held securely in place.

ISB Series Engines

• ISB CM2150
• ISB6.7 CM2250

The ISB series engines are designed for heavy-duty applications, providing robust performance and durability. The Spring Washer 3910266 is used in these engines to maintain the integrity of various assemblies, contributing to the overall reliability of the engine.

ISC Series Engines

• ISC CM554
• ISC CM850

The ISC series engines are known for their versatility and are used in a wide range of applications. The Spring Washer 3910266 is a critical component in these engines, ensuring that parts are properly secured and aligned.

ISL Series Engines

• ISL CM554

The ISL series engine is designed for on-highway applications, offering high performance and efficiency. The Spring Washer 3910266 is used in this engine to maintain the precision and reliability of its components.

ISM Series Engines

• ISM CM570
• ISM CM570/870
• ISM CM876
• ISM11 CM876 SN

The ISM series engines are known for their durability and performance in off-highway applications. The Spring Washer 3910266 is essential in these engines, ensuring that various parts are held securely in place, contributing to the engine’s overall performance and longevity.

ISX Series Engines

• ISX CM570
• ISX CM870
• ISX CM871
• ISX12 CM2350 X102
• ISX12 G CM2180 EJ
• ISX12/ISX11.9 CM2250
• ISX15 CM2250
• ISX15 CM2250 SN
• ISX15 CM2350 X101

The ISX series engines are among the most powerful and efficient in Cummins’ lineup, used in a variety of heavy-duty applications. The Spring Washer 3910266 is a crucial component in these engines, ensuring that parts are held securely and that the engine operates smoothly and reliably.

ISZ Series Engines

• ISZ13 CM2150 Z105

The ISZ series engine is designed for vocational applications, offering high performance and reliability. The Spring Washer 3910266 is used in this engine to maintain the integrity of its components, ensuring that it operates efficiently and reliably.

QSC Series Engines

• QSC8.3 CM554
• QSK19 CM850 MCRS

The QSC and QSK series engines are known for their durability and performance in a variety of applications. The Spring Washer 3910266 is essential in these engines, ensuring that parts are held securely and that the engine operates smoothly and reliably.

Role of Part 3910266 Spring Washer in Engine Systems

This part is an essential component in various engine systems, ensuring the proper functioning and longevity of several critical assemblies. Here’s how it integrates with different engine components:

Crankcase Breather Arrangement

In the crankcase breather arrangement, this part is used to maintain a secure seal between the breather valve and the crankcase. This ensures that pressure within the crankcase is regulated effectively, preventing oil leaks and maintaining optimal engine performance.

Exhaust Recirculation Air Arrangement

For the exhaust recirculation air arrangement, the Spring Washer plays a role in sealing connections within the system. It helps in maintaining the integrity of the seal between the exhaust recirculation valve and its housing, ensuring that recirculated exhaust gases are properly managed to reduce emissions.

Thermostat Housing

Within the thermostat housing, the 3910266 Spring Washer is employed to ensure a tight seal around the thermostat. This prevents coolant leaks and ensures that the thermostat can accurately regulate engine temperature, contributing to efficient engine operation.

Compressor Air Connection

In the compressor air connection, the Spring Washer is utilized to secure the connection between the compressor and the air intake system. This ensures that air enters the compressor without leaks, optimizing compressor efficiency and overall engine performance.

Water Outlet Connection

At the water outlet connection, the Spring Washer helps to create a reliable seal, preventing coolant leaks from the engine block. This is vital for maintaining consistent coolant flow and engine temperature regulation.

Fluid Doser

In the fluid doser system, the Spring Washer is used to ensure a secure connection between the doser and the exhaust system. This maintains the integrity of the seal, allowing for precise fluid injection to aid in emission control.

Exhaust Gas Recirculation Cooler

The Spring Washer is integral in the exhaust gas recirculation cooler, where it ensures a tight seal between the cooler and its mounting points. This prevents leaks and ensures that the cooler can effectively reduce the temperature of recirculated exhaust gases.

Fuel Filter

Within the fuel filter assembly, the Spring Washer is used to secure the connections between the filter housing and the fuel lines. This ensures that fuel flows smoothly without leaks, maintaining the efficiency of the fuel system.

Oil Level Gauge

In the oil level gauge system, the Spring Washer helps to create a secure seal around the gauge’s mounting point. This ensures accurate oil level readings and prevents oil leaks from the gauge housing.

Electronic Control Module Wiring Harness

The Spring Washer is utilized in the electronic control module wiring harness to ensure secure connections between various sensors and the engine control module. This maintains the integrity of electrical connections, ensuring reliable data transmission and engine management.

Engine Control Module Mounting

For the engine control module mounting, the Spring Washer is used to secure the module to its mounting bracket. This ensures that the module remains firmly in place, preventing any movement that could disrupt its function.

Oil Pan

In the oil pan assembly, the Spring Washer is employed to ensure a tight seal around the pan’s drain plug. This prevents oil leaks and ensures that the oil pan can effectively contain the engine’s lubricant.

Air Cleaner Plumbing

Within the air cleaner plumbing, the Spring Washer is used to secure connections between the air cleaner housing and the intake manifold. This ensures that air enters the engine cleanly and without leaks, optimizing engine performance.

Crankcase Breather Plumbing

In the crankcase breather plumbing, the Spring Washer ensures a secure seal between the breather hose and the crankcase. This maintains proper ventilation and pressure regulation within the crankcase.

Exhaust Recirculation Water Plumbing

For the exhaust recirculation water plumbing, the Spring Washer is used to create a reliable seal between the water recirculation system and the exhaust manifold. This ensures that water is effectively recirculated to aid in emission control.

Flywheel Housing Plumbing

In the flywheel housing plumbing, the Spring Washer ensures a secure connection between the flywheel housing and the associated plumbing components. This prevents leaks and maintains the integrity of the system.

CRC Breather

The Spring Washer is utilized in the CRC breather system to ensure a tight seal between the breather and its mounting points. This maintains proper ventilation and pressure within the crankcase.

Fuel Transfer Pump

Within the fuel transfer pump assembly, the Spring Washer is used to secure connections between the pump and the fuel lines. This ensures that fuel is transferred efficiently without leaks, maintaining the reliability of the fuel system.

Exhaust Recirculation

In the exhaust recirculation system, the Spring Washer ensures a secure seal between the recirculation valve and its housing. This maintains the effectiveness of the recirculation process, contributing to reduced emissions.

Heat Shield

The Spring Washer is employed in the heat shield assembly to ensure a secure connection between the shield and its mounting points. This maintains the shield’s position and effectiveness in protecting nearby components from excessive heat.

Short Engine Kit

In the short engine kit, the Spring Washer is used throughout various connections and mounting points to ensure secure and leak-free assemblies. This contributes to the overall reliability and performance of the engine kit.

Conclusion

The 3910266 Spring Washer is a critical component in the maintenance and operation of commercial trucks and Cummins engines. Its role in maintaining bolt tension and preventing loosening ensures the safety, reliability, and performance of various truck assemblies and engine systems. Proper installation, regular maintenance, and understanding its applications are essential for maximizing the benefits of this part.