3003756
Clip
Cummins®

The 3003756 Plain Washer is a component manufactured by Cummins, a well-established name in the commercial truck industry. This washer is designed for use in various mechanical systems within commercial trucks, contributing to the overall efficiency and reliability of the vehicle.

Basic Concepts of Plain Washers

Plain washers are simple yet vital components in mechanical systems. They are typically flat, annular devices made from metal or other materials. Their primary function is to distribute the load of a threaded fastener, such as a bolt or screw, over a larger area. This helps prevent damage to the surface and provides a more secure fastening. Plain washers also play a role in maintaining proper spacing between components and can help reduce friction and wear ¹.

Purpose of the 3003756 Plain Washer

The 3003756 Plain Washer serves a specific role within the mechanical systems of a truck. It is used to ensure that the load from fasteners is evenly distributed, which is particularly important in high-stress areas of a truck. By doing so, it helps maintain the integrity of the fastening system, ensuring that components remain securely in place under various operating conditions.

Key Features

The 3003756 Plain Washer is characterized by several key features that make it suitable for its intended use. It is typically made from high-quality materials that offer durability and resistance to wear. The dimensions of the washer are precisely engineered to fit specific applications within the truck’s mechanical systems. Its design ensures that it can withstand the rigors of commercial truck operations, providing reliable performance over time.

Benefits

Using the 3003756 Plain Washer offers several benefits. It contributes to improved performance by ensuring that fasteners are securely held in place. This enhances the overall reliability of the truck’s mechanical systems. Additionally, the washer’s durable construction helps prolong the lifespan of the components it supports, reducing the need for frequent replacements and maintenance ².

Installation

Proper installation of the 3003756 Plain Washer is important for ensuring optimal performance and longevity. It should be placed under the head of a bolt or screw to distribute the load effectively. Care should be taken to ensure that the washer is correctly aligned and that it fits snugly within the application. Following manufacturer guidelines for torque settings and fastening procedures will help ensure that the washer functions as intended.

Troubleshooting and Maintenance

Identifying common issues related to the 3003756 Plain Washer can help prevent more significant problems down the line. Regular inspection for signs of wear or damage is recommended. If the washer shows signs of deformation or corrosion, it may need to be replaced. Maintenance tips include keeping the washer and surrounding components clean and free from debris, which can contribute to wear and reduce performance ³.

Cummins Overview

Cummins is a renowned manufacturer in the commercial truck industry, known for its wide range of high-quality products. With a history of innovation and excellence, Cummins has established a strong reputation for producing reliable and durable components. Their product range includes engines, powertrain components, and aftermarket parts, all designed to meet the demanding requirements of commercial truck operations.

Cummins Engine Part 3003756: Plain Washer Application

The Cummins part number 3003756, a Plain Washer, is a critical component in the assembly and maintenance of several Cummins engine models. This washer is designed to provide a smooth and even distribution of pressure, ensuring the integrity of the engine’s assembly and preventing potential leaks or failures. Below is a detailed description of how this part fits within various Cummins engine models.

4B3.9 and 6B5.9 Engines

The Plain Washer 3003756 is utilized in the 4B3.9 and 6B5.9 engines to maintain the alignment and stability of various components. In these engines, the washer is often employed in areas where bolts or screws need to be secured to a flat surface, ensuring that the fastening is tight and secure without causing damage to the mating surfaces.

6C8.3 and B5.9 G Engines

Similarly, in the 6C8.3 and B5.9 G engines, the Plain Washer 3003756 plays a vital role in maintaining the structural integrity of the engine. This washer is typically used in conjunction with larger components, where it helps to distribute the load evenly and prevent any undue stress on the engine parts. Its application in these engines ensures that the assembly remains stable and operational.

QSC8.3 CM850 (CM2850) and QSK60 CM500 Engines

In the more advanced QSC8.3 CM850 (CM2850) and QSK60 CM500 engines, the Plain Washer 3003756 is used in several critical areas. These engines, known for their high performance and reliability, require precise components to maintain their operational standards. The washer is often found in areas where high-pressure seals are necessary, ensuring that the engine can operate under demanding conditions without failure.

QSK78 CM500 Engine

The QSK78 CM500 engine also benefits from the use of the Plain Washer 3003756. This engine, designed for heavy-duty applications, relies on the washer to maintain the alignment and stability of its components. The washer’s role in this engine is crucial for ensuring that the assembly remains intact under heavy loads and high-stress conditions.

Role of Part 3003756 Plain Washer in Various Engine Systems

Aftercooler Water Plumbing

In the aftercooler water plumbing system, the 3003756 Plain Washer is utilized to ensure a secure and leak-free connection between the water pipes and the aftercooler. This washer helps maintain the integrity of the water flow, preventing any potential leaks that could compromise the cooling efficiency of the aftercooler.

Auxiliary Cooling System

Within the auxiliary cooling system, the 3003756 Plain Washer plays a part in the connections of the cooling fluid lines. It ensures that the cooling fluid circulates without any interruptions, maintaining the optimal temperature of the engine components that the auxiliary cooling system is designed to regulate.

Clip

When used in conjunction with clips, the 3003756 Plain Washer provides additional stability and sealing. This is particularly important in applications where vibration or movement could loosen connections, ensuring that the clipped components remain firmly in place.

Crankcase Breather

In the crankcase breather system, the 3003756 Plain Washer is employed to seal the connections between the breather pipe and the crankcase. This helps in maintaining the pressure balance within the crankcase, allowing for efficient ventilation without the risk of oil or gas leaks.

Cylinder Block Cover

For the cylinder block cover, the 3003756 Plain Washer is used to seal the bolts or fasteners that secure the cover to the cylinder block. This ensures that the internal components are protected from external contaminants and that the engine operates within specified parameters.

Keel Cooling

In keel cooling systems, the 3003756 Plain Washer is integral in sealing the connections of the cooling passages. This ensures that the cooling medium, typically water, flows efficiently through the keel, providing consistent cooling to the lower parts of the engine.

Oil Fill Arrangement

The 3003756 Plain Washer is also used in the oil fill arrangement to seal the cap or plug that covers the oil fill port. This prevents oil from leaking out and contaminants from entering the engine, maintaining the purity and level of the engine oil.

Conclusion

The 3003756 Plain Washer is a vital component in the mechanical systems of commercial trucks, particularly those equipped with Cummins engines. Its role in distributing the load of fasteners, maintaining proper spacing, and reducing friction and wear is crucial for the overall efficiency and reliability of the vehicle. Proper installation, regular maintenance, and timely replacement of this Cummins part ensure that it continues to perform its functions effectively, contributing to the longevity and performance of the truck’s engine systems.