4991971
Air Compressor Support
Cummins®

The 4991971 Air Compressor Mounting Bracket is a component manufactured by Cummins, a well-established name in the commercial truck industry. This mounting bracket is integral to the operation of air compressors in commercial trucks, ensuring that the compressor is securely fastened and operates efficiently.

Function and Operation

Air compressor mounting brackets are designed to hold the air compressor in place within a truck’s air system. They play a role in maintaining the compressor’s position and stability, which is vital for the consistent operation of the air system. This Cummins part specifically serves to secure the air compressor, reducing the potential for movement that could lead to operational inefficiencies or damage ¹.

Purpose of the 4991971 Air Compressor Mounting Bracket

The primary purpose of this part is to provide a stable platform for the air compressor. By securing the compressor, it contributes to the overall efficiency and reliability of the air system. This stability allows the compressor to operate under optimal conditions, which can lead to more consistent air pressure and improved system performance ².

Key Features

The 4991971 is constructed with materials and design elements that enhance its performance and durability. It is made from high-strength materials to withstand the rigors of commercial truck operations. The design includes features that facilitate easy installation and secure fastening of the air compressor. Additionally, the bracket may incorporate elements that reduce vibration, further contributing to the longevity and efficiency of the compressor ³.

Benefits

Using this Cummins part offers several benefits. It provides improved stability for the air compressor, which can lead to reduced vibration during operation. This stability and reduced vibration contribute to the enhanced durability of the compressor and the mounting bracket itself. Over time, the use of a high-quality mounting bracket can result in potential cost savings by minimizing the need for repairs or replacements.

Installation Process

Installing the 4991971 requires attention to detail to ensure a secure and effective fit. The process involves aligning the bracket with the compressor and the truck’s frame, using the appropriate tools to fasten it in place, and verifying that it is securely attached. It is important to follow manufacturer guidelines to ensure proper installation.

Troubleshooting and Maintenance

Common issues with air compressor mounting brackets may include loosening over time or damage from road vibrations. Regular inspections can help identify these issues early. Maintenance practices such as tightening fasteners and checking for signs of wear can prolong the lifespan of the mounting bracket and ensure optimal performance of the air compressor.

Compatibility and Applications

The 4991971 is designed for use with specific types of trucks and air compressor systems. It is important to verify compatibility with the make and model of the truck and the air compressor to ensure proper fit and function.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes engines, filtration, and power generation products. With a history of innovation and a commitment to quality, Cummins has established a strong reputation in the commercial truck industry. The company’s product range includes a variety of components designed to enhance the performance and reliability of commercial vehicles.

Cummins Air Compressor Mounting Bracket 4991971 Compatibility

The Cummins Air Compressor Mounting Bracket part number 4991971 is designed to fit a variety of Cummins engine models. This bracket is essential for securely mounting the air compressor to the engine, ensuring proper operation and longevity of the air system components.

ISB Series Engines

• ISB CM2150
• ISB/ISD6.7 CM2150 SN
• ISB6.7 CM2250
• ISB6.7 CM2350 B101
• ISB6.7 G CM2180 B118

The ISB series engines, including the ISB CM2150, ISB/ISD6.7 CM2150 SN, ISB6.7 CM2250, ISB6.7 CM2350 B101, and ISB6.7 G CM2180 B118, are compatible with the 4991971. This bracket ensures that the air compressor is properly aligned and secured, facilitating efficient operation of the engine’s air system.

ISBE Series Engines

• ISBE CM2150
• ISBE4 CM850

The ISBE series engines, specifically the ISBE CM2150 and ISBE4 CM850, also utilize the 4991971. This bracket is engineered to fit these models, providing a reliable mounting solution for the air compressor.

QSB Series Engines

• QSB6.7 CM2250
• QSB6.7 CM850 (CM2850)
• QSB7 CM2880 B117

The QSB series engines, including the QSB6.7 CM2250, QSB6.7 CM850 (CM2850), and QSB7 CM2880 B117, are also compatible with the 4991971. This bracket ensures that the air compressor is securely mounted, contributing to the overall efficiency and reliability of the engine’s air system.

Role of Part 4991971 Air Compressor Mounting Bracket in Engine Systems

The 4991971 is an essential component in the integration of the air compressor within various engine systems. This bracket securely attaches the air compressor to the engine, ensuring stability and proper alignment during operation.

When installed, the mounting bracket allows the air compressor to efficiently draw in air, compress it, and deliver it to the necessary components within the engine system. This process is vital for maintaining the engine’s performance, as the compressed air is often used for functions such as powering pneumatic tools, enhancing fuel combustion, and supporting various engine control systems.

The bracket’s design ensures that the air compressor remains firmly in place, reducing the risk of vibrations that could lead to inefficiencies or damage. Additionally, the secure mounting provided by the bracket facilitates easier maintenance and replacement of the air compressor, should the need arise.

Conclusion

In summary, the 4991971 plays a significant role in the effective operation and maintenance of the air compressor within engine systems, contributing to the overall reliability and performance of the engine.