3906755
Mounting Spacer
Cummins®

Introduction

The Cummins 3906755 Mounting Spacer is a component designed for use in heavy-duty truck applications. Its primary role is to ensure proper alignment and spacing between various components within the truck’s assembly. This spacer is integral to maintaining the structural integrity and operational efficiency of the truck’s engine and other mechanical systems.

Purpose and Function

The Cummins 3906755 Mounting Spacer serves to facilitate accurate alignment and appropriate spacing between components in heavy-duty truck assemblies. By maintaining the correct distance and orientation between parts, it helps to ensure that the mechanical systems operate smoothly and efficiently. This spacer plays a role in reducing the potential for misalignment, which can lead to increased wear, vibration, and other performance issues ¹.

Key Features

The Cummins 3906755 Mounting Spacer is constructed from high-quality materials, ensuring durability and reliability in demanding environments. Its dimensions are precisely engineered to fit specific applications, providing a secure and stable connection between components. The design of the spacer includes features that enhance its performance, such as smooth surfaces to reduce friction and robust construction to withstand heavy loads.

Benefits

Incorporating the Cummins 3906755 Mounting Spacer into heavy-duty truck assemblies offers several advantages. It contributes to improved component alignment, which can lead to reduced vibration during operation. Additionally, the spacer enhances the stability of the mechanical systems, promoting smoother performance. Over time, the use of this spacer can help prolong the lifespan of the equipment by minimizing wear and tear on connected components ².

Installation Guidelines

Proper installation of the Cummins 3906755 Mounting Spacer is vital to ensure optimal performance. The process involves using the recommended tools to place the spacer between the designated components. Torque specifications should be followed to secure the spacer in place without over-tightening, which could damage the spacer or the components it connects. Alignment procedures should be carefully observed to maintain the correct spacing and orientation.

Troubleshooting and Maintenance

Common issues with mounting spacers may include misalignment or wear over time. Troubleshooting these problems involves checking the spacer for signs of damage or deformation and ensuring that it is correctly positioned. Regular maintenance, such as inspecting the spacer for wear and replacing it if necessary, can help prolong its lifespan and ensure continued reliable performance of the truck’s mechanical systems.

Manufacturer Information

Cummins Inc. is a well-established manufacturer in the automotive industry, known for its commitment to quality and innovation. With a history of producing reliable and high-performance components, Cummins has built a reputation for excellence. The company’s dedication to advancing automotive technology is evident in its wide range of products, including the Cummins 3906755 Mounting Spacer, which is designed to meet the rigorous demands of heavy-duty truck applications.

Compatibility with Cummins Engines

The Cummins Mounting Spacer part number 3906755 is a versatile component designed to fit a variety of Cummins engines. This part is essential for ensuring proper engine mounting and alignment, contributing to the overall stability and performance of the engine. Below is a detailed breakdown of the engines with which this mounting spacer is compatible.

4B3.9 and 6B5.9 Engines

The 4B3.9 and 6B5.9 engines are part of Cummins’ earlier lineup, known for their robust design and reliability. The mounting spacer part 3906755 is engineered to fit these engines, ensuring that they are securely mounted within the vehicle’s engine bay. This is crucial for maintaining engine alignment and reducing vibrations, which can lead to longer engine life and improved performance.

6C8.3 and B5.9 G Engines

The 6C8.3 and B5.9 G engines are medium-duty engines that benefit from the precision fit of the 3906755 mounting spacer. These engines are often used in commercial applications where durability and efficiency are paramount. The mounting spacer ensures that the engine is correctly positioned, which is vital for optimal performance and longevity.

C GAS PLUS CM556 and C8.3 G Engines

The C GAS PLUS CM556 and C8.3 G engines are part of Cummins’ gas engine lineup, designed for applications that require high efficiency and low emissions. The 3906755 mounting spacer is compatible with these engines, providing the necessary support and alignment to ensure smooth operation and reduced wear.

ISB Series Engines

The ISB series engines, including the ISB CM2150, ISB CM550, ISB CM850, ISB6.7 CM2250, ISBE CM800, 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, and ISZ13 CM2150 Z105, are among the most popular Cummins engines in the market. The 3906755 mounting spacer is designed to fit these engines, ensuring they are securely mounted and aligned. This is particularly important for the ISX series, which is known for its high power output and efficiency.

QSB Series Engines

The QSB series engines, including the QSB4.5 CM850 (CM2850), QSB6.7 CM2250, QSB6.7 CM850 (CM2850), and QSB7 CM2880 B117, are designed for a variety of applications, from construction to agriculture. The 3906755 mounting spacer is compatible with these engines, providing the necessary support and alignment to ensure they operate efficiently and reliably.

This comprehensive compatibility of the Cummins Mounting Spacer part number 3906755 with a wide range of Cummins engines underscores its importance in maintaining engine stability and performance across different applications and engine types.

Role of Part 3906755 Mounting Spacer in Engine Systems

The Part 3906755 Mounting Spacer is an essential component in the assembly and alignment of various engine systems. It ensures precise spacing and alignment between components, which is vital for the efficient operation of the engine.

Accessory Support and Alternator

In the context of accessory support, the Mounting Spacer is used to maintain the correct distance between the engine block and the alternator. This ensures that the alternator is properly aligned with the accessory drive belt, which is necessary for efficient power transfer from the engine to the alternator. Proper alignment prevents belt slippage and reduces wear on both the belt and the alternator.

Alternator Location and Support

At the alternator location, the Mounting Spacer helps in securing the alternator in its designated position. It provides a stable platform for the alternator, ensuring that it remains fixed and does not shift during engine operation. This stability is important for consistent electrical output and longevity of the alternator.

Compressor and Refrigerant System

When integrating the compressor into the refrigerant system, the Mounting Spacer plays a role in ensuring that the compressor is correctly spaced from other components. This is important for the efficient operation of the air conditioning system, as it ensures that the compressor can operate without interference from adjacent parts.

Fan Drive and Plumbing

In systems where a fan drive is present, the Mounting Spacer assists in maintaining the correct distance between the fan and the engine components. This is particularly important in plumbing systems where precise spacing is required to avoid interference and ensure smooth operation of the cooling system.

Turbocharger Integration

For engines equipped with a turbocharger, the Mounting Spacer is used to ensure that the turbocharger is correctly positioned in relation to the engine and exhaust system. This precise spacing is important for the efficient flow of exhaust gases and the optimal performance of the turbocharger.

Overall, the Part 3906755 Mounting Spacer is a key component in ensuring the proper installation and operation of various engine systems. Its role in maintaining correct spacing and alignment between components contributes to the overall efficiency and reliability of the engine ³.

Conclusion

The Cummins 3906755 Mounting Spacer is a critical component in heavy-duty truck applications, ensuring proper alignment and spacing between engine components. Its high-quality construction, precise engineering, and compatibility with a wide range of Cummins engines make it an essential part for maintaining engine stability and performance. Proper installation and regular maintenance of this spacer are vital for the longevity and efficiency of the truck’s mechanical systems.