3863140
Plain Washer
Cummins®

The Cummins 3863140 Plain Washer is a component designed for use in commercial truck operations. It serves a specific function within the mechanical systems of trucks, contributing to the overall efficiency and reliability of the vehicle. Cummins Inc., a well-established manufacturer in the automotive industry, produces this washer. The company is known for its commitment to quality and innovation in the production of automotive components ¹.

Basic Concepts of Plain Washers

Plain washers are simple yet vital components in mechanical systems. They function primarily to distribute load and prevent damage to surfaces by providing a barrier between two contacting parts. Plain washers can be made from a variety of materials, including steel, stainless steel, brass, and nylon, each offering different properties such as strength, corrosion resistance, and electrical insulation ².

Purpose of the Cummins 3863140 Plain Washer

This Cummins part plays a role in truck operations by ensuring the proper distribution of load and preventing surface damage in specific truck components. It is integral to the assembly and functionality of various truck parts, contributing to the smooth operation and longevity of the vehicle ³.

Key Features

The Cummins 3863140 Plain Washer is characterized by its specific design and material composition. It is crafted to meet the demanding requirements of commercial truck applications. Unique characteristics may include a particular thickness, diameter, or material grade that sets it apart from other plain washers, enhancing its performance in truck operations.

Benefits

Using the Cummins 3863140 Plain Washer in truck maintenance and operations offers several advantages. These include enhanced durability, improved performance, and increased reliability of the truck components it is used with. Its design and material properties contribute to these benefits, making it a valuable component in truck maintenance.

Installation and Usage

Proper installation of the Cummins 3863140 Plain Washer is key to ensuring optimal performance and longevity. Guidelines for installation include ensuring the washer is correctly positioned between the contacting parts and that it is not over-tightened, which could lead to deformation or failure. Best practices for usage involve regular inspection and replacement as needed to maintain the washer’s effectiveness.

Troubleshooting and Maintenance

Common issues with plain washers include deformation, corrosion, and failure due to over-tightening. Troubleshooting these issues involves inspecting the washer for signs of wear or damage and replacing it if necessary. Maintenance tips to prolong the life of the Cummins 3863140 Plain Washer include keeping it clean and free from contaminants that could accelerate wear or corrosion.

Safety Considerations

When handling and installing the Cummins 3863140 Plain Washer, it is important to observe safety precautions to avoid injuries or damage. This includes wearing appropriate personal protective equipment, ensuring the work area is clean and organized, and following all manufacturer guidelines for installation and usage.

Cummins as a Manufacturer

Cummins Inc. has a long-standing reputation in the manufacturing of automotive components. The company’s history is marked by a commitment to quality and innovation, producing components that meet the high demands of commercial and heavy-duty applications. Cummins’ dedication to excellence is evident in the design and performance of its products, including the Cummins 3863140 Plain Washer.

Cummins Engine Part 3863140: Plain Washer Application

The Cummins part number 3863140, a Plain Washer, is a critical component used across a variety of Cummins engines. This washer is designed to provide a smooth and even distribution of pressure, ensuring proper sealing and alignment in various engine assemblies. Below is a detailed look at how this part fits into different Cummins engine models.

Small Bore Engines

• 4B3.9
• 6B5.9
• B3.3
• L8.9
• L8.9 CM2670 L134C
• L8.9 L121
• L9 CM2670 L128B
• QSB3.3 CM2150
• QSB3.3 CM2250 EC
• QSB4.5 CM2250 EC
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

In small bore engines, the Plain Washer 3863140 is often used in applications where precise pressure distribution is crucial, such as in the fuel injection system, coolant passages, and other critical areas requiring a reliable seal.

Medium Bore Engines

• 6C8.3
• QSB3.3 CM2150
• QSB3.3 CM2250 EC
• QSB4.5 CM2250 EC
• QSB6.7 CM2250
• QSB6.7 CM2350 B105
• QSC8.3 CM2880 C102

For medium bore engines, the Plain Washer 3863140 plays a vital role in maintaining the integrity of the engine’s components. It is frequently utilized in areas such as the turbocharger system, oil passages, and other high-pressure environments.

Large Bore Engines

• ISB CM2150
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISBE CM2150
• ISBE4 CM850
• ISC CM850
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138

In large bore engines, the Plain Washer 3863140 is essential for ensuring that large components such as the cylinder head, intake manifold, and exhaust system are properly sealed and aligned. This washer helps to maintain the structural integrity and performance of these larger engines.

Special Applications

• ISB6.7 CM2350 B101
• ISL9.5 CM2880 L138

These engines, with their unique configurations, also benefit from the Plain Washer 3863140. The washer’s role in these specialized applications is to provide a consistent and reliable seal, which is critical for the overall performance and longevity of the engine.

Role of Part 3863140 Plain Washer in Engine Systems

In the intricate world of engine systems, the part 3863140 Plain Washer serves as a fundamental component in ensuring the smooth operation and longevity of various engine parts. Its application spans across multiple components, each playing a distinct role in the engine’s functionality.

Air Intake Manifold and Fuel Manifold

Within the air intake manifold and fuel manifold, the Plain Washer is instrumental in maintaining the integrity of connections. It ensures a secure fit between the manifold and its mounting points, preventing leaks that could compromise engine performance. This is particularly important in maintaining the correct air-fuel mixture, essential for efficient combustion.

Alternator Mounting and Fuel Pump Mounting

For the alternator and fuel pump, the Plain Washer facilitates a stable mounting arrangement. It absorbs vibrations and reduces the risk of loosening over time, which is vital for the consistent operation of these components. A secure alternator ensures reliable electrical power, while a stable fuel pump is crucial for maintaining fuel pressure and delivery.

Heat Shield and Oil Pan

In the context of the heat shield and oil pan, the Plain Washer acts as a thermal barrier. It helps in distributing heat evenly and preventing direct contact between hot and cold surfaces, which could lead to warping or damage. This is especially important in the oil pan, where maintaining the structural integrity is key to preventing oil leaks.

Crankcase and Front Gear

The crankcase and front gear benefit from the Plain Washer by ensuring precise alignment and reducing friction. This is essential for the smooth rotation of the crankshaft and the efficient transfer of power from the engine to the transmission. Proper alignment and reduced friction contribute to the overall performance and durability of the engine.

Fuel System Components

In the fuel system, including the fuel filter, fuel supply plumbing, and fuel pump, the Plain Washer plays a role in securing connections and preventing leaks. This is critical for maintaining fuel pressure and ensuring a consistent fuel supply to the engine, directly impacting its performance and efficiency.

Electronic Control Module Wiring and Engine Control Module

For the electronic control module (ECM) wiring and engine control module, the Plain Washer ensures a secure and vibration-resistant connection. This is vital for the accurate transmission of data and signals, which are essential for the ECM to make precise adjustments to the engine’s operation.

Exhaust Recirculation Air Plumbing and Fuel Plumbing

In the exhaust recirculation air plumbing and fuel plumbing, the Plain Washer helps in maintaining the integrity of the system by preventing leaks and ensuring a tight fit. This is important for the efficient recirculation of exhaust gases and the precise delivery of fuel, both of which are crucial for reducing emissions and enhancing engine performance.

Oil Level Gauge and Oil Pan

The oil level gauge and oil pan rely on the Plain Washer to ensure a secure and leak-free connection. This is essential for accurately monitoring the oil level and preventing oil leaks, which are critical for maintaining engine lubrication and preventing damage.

Conclusion

In summary, the part 3863140 Plain Washer, though small in size, plays a significant role in the reliable operation and maintenance of various engine components. Its application across different systems underscores its importance in ensuring the engine’s performance, efficiency, and longevity.