3936808
AIR COMPRESSOR
Cummins®

AVAILABLE

Cummins®

Ships within 1-3 business days

$1,299.95 $1,546.94

This truck part is made by Cummins®. We guarantee that all of our parts are from the OEM (original equipment manufacturer), ensuring a proper fit and quality manufacturing.


DESCRIPTION

The Cummins 3936808 Air Compressor is a vital component in commercial truck operations, contributing significantly to the overall functionality of heavy-duty trucks. This compressor is designed to provide the necessary air pressure for various pneumatic systems within the truck, ensuring efficient and reliable performance.

Basic Concepts of Air Compressors

An air compressor is a device that converts power into potential energy stored in pressurized air. It operates by drawing in air, compressing it, and then storing it in a tank until needed. In a truck’s pneumatic system, the compressed air is used to power various functions, including the braking system, suspension, and other pneumatic components. The fundamental principle behind an air compressor’s function is the conversion of mechanical energy into pneumatic energy, which is then utilized to perform work 1.

Role of the 3936808 Air Compressor in Truck Operation

The Cummins 3936808 Air Compressor plays a specific role in the operation of a commercial truck by providing the necessary air pressure for critical systems. It contributes to the braking system by ensuring that the air brakes have sufficient pressure to operate effectively. Additionally, it supports the suspension system, allowing for adjustments that enhance ride comfort and vehicle stability. The compressor also powers other pneumatic functions, such as air-operated accessories and tools, ensuring that the truck can perform a wide range of tasks efficiently.

Key Features of the 3936808 Air Compressor

The Cummins 3936808 Air Compressor boasts several key features that enhance its performance and reliability. Its design incorporates high-quality materials that ensure durability under demanding conditions. Unique characteristics, such as advanced sealing technology and efficient compression mechanisms, contribute to its robust performance. These features make the compressor well-suited for the rigors of commercial truck operations.

Benefits of Using the 3936808 Air Compressor

Utilizing the Cummins 3936808 Air Compressor offers several advantages. It provides improved efficiency through its advanced design, which reduces energy consumption while maintaining high performance. The compressor’s durability ensures long-term reliability, minimizing the need for frequent replacements. Additionally, its performance in various operating conditions makes it a versatile choice for commercial truck applications.

Installation and Integration

Proper installation and integration of the Cummins 3936808 Air Compressor into a truck’s system are crucial for optimal performance. Guidelines for installation include ensuring compatibility with other components and making necessary adjustments to fit the compressor within the truck’s existing system. Careful attention to these details helps prevent issues and ensures that the compressor operates efficiently.

Maintenance and Troubleshooting

Maintaining the Cummins 3936808 Air Compressor is essential for ensuring optimal performance. Regular checks should include inspecting for leaks, monitoring air pressure levels, and ensuring that all connections are secure. Common issues to watch for include unusual noises, decreased air pressure, and signs of wear on components. Troubleshooting tips involve identifying the source of the problem, whether it be a faulty seal, clogged filter, or electrical issue, and addressing it promptly to restore functionality 2.

Performance and Efficiency

The performance metrics and efficiency of the Cummins 3936808 Air Compressor are notable. It compares favorably to other models in terms of air output and energy consumption. Its impact on fuel consumption is minimal, as it is designed to operate efficiently without significantly increasing the truck’s overall fuel usage. The compressor’s performance contributes to the truck’s overall efficiency and reliability.

Safety Considerations

When working with the Cummins 3936808 Air Compressor, several safety guidelines and precautions should be observed. These include proper handling to avoid injury from high-pressure air, ensuring that the compressor is operated within its specified parameters, and following maintenance safety practices to prevent accidents. Adhering to these safety considerations helps protect both the equipment and the personnel involved.

Environmental Impact

The environmental considerations associated with the use of the Cummins 3936808 Air Compressor include its energy consumption and emissions. While the compressor is designed to operate efficiently, it is important to monitor its energy usage and ensure that it is used in a manner that minimizes its environmental footprint. Any eco-friendly features it may possess, such as energy-saving modes or reduced emissions, should be utilized to further enhance its environmental performance.

Cummins Corporation Overview

Cummins Inc. is a renowned manufacturer with a rich history in the commercial truck industry. The company offers a wide range of products, including engines, filtration systems, and power generation equipment. Cummins is known for its commitment to quality and innovation, which is reflected in the development and performance of the 3936808 Air Compressor. The company’s reputation for excellence provides confidence in the compressor’s design and functionality 3.

Compatibility of Cummins Air Compressor 3936808

The Cummins Air Compressor part number 3936808 is designed to fit a variety of Cummins engines, ensuring reliable performance across multiple applications. Here are the engines with which this air compressor is compatible:

6B5.9 Series

  • 6B5.9
  • B5.9 GAS PLUS CM556

6C8.3 Series

  • 6C8.3
  • C GAS PLUS CM556

4B3.9 Series

  • 4B3.9

8.3 Liter Series

  • C8.3 G
  • ISB5.9G CM2180

This air compressor is engineered to provide efficient and dependable air supply to the engine’s systems, ensuring optimal performance and reliability across these engine models.

Role of Part 3936808 Air Compressor in Engine Systems

The Part 3936808 Air Compressor is integral to the efficient operation of various engine systems. Its primary function is to supply pressurized air, which is essential for multiple components and processes within the engine.

Turbocharging Systems

In turbocharged engines, the air compressor works in tandem with the turbocharger to increase the mass flow rate of air entering the combustion chamber. This pressurized air allows for more fuel to be burned, resulting in enhanced power output and improved engine performance.

Fuel Injection Systems

For fuel injection systems, the pressurized air from the compressor ensures that the fuel is atomized more effectively. This leads to a more complete combustion process, which is vital for maintaining optimal fuel efficiency and reducing emissions.

Brake Systems

In brake systems that utilize air compressors, the pressurized air is used to operate the brake actuators. This ensures that the braking force is applied consistently and reliably, which is essential for vehicle safety.

Suspension Systems

Some advanced suspension systems use air compressors to adjust the ride height and damping characteristics of the vehicle. The air compressor provides the necessary pressure to inflate or deflate the air springs, allowing for real-time adjustments based on driving conditions.

Cabin Pressurization

In vehicles equipped with cabin pressurization systems, the air compressor supplies pressurized air to maintain a comfortable environment for occupants. This is particularly important in high-altitude driving conditions where the external air pressure is lower.

Aftertreatment Systems

In diesel engines, the air compressor plays a role in aftertreatment systems by providing the necessary airflow for components like Diesel Particulate Filters (DPF) and Selective Catalytic Reduction (SCR) systems. This ensures that emissions are kept within regulatory limits.

Pneumatic Tools

For maintenance and repair tasks, the air compressor provides the necessary airflow to power pneumatic tools. This increases efficiency and reduces the time required for various mechanical operations.

The integration of the Part 3936808 Air Compressor into these systems underscores its versatility and importance in modern engine technology.

Conclusion

The Cummins 3936808 Air Compressor is a critical component in the operation of commercial trucks, providing essential air pressure for various systems. Its advanced features, compatibility with multiple Cummins engines, and role in enhancing engine performance make it a valuable asset for truck operators. Proper installation, maintenance, and adherence to safety guidelines ensure optimal performance and reliability.


  1. Gilles, T. (2020). Automotive Service: Inspection, Maintenance, Repair (2nd ed.). Cengage Learning.

  2. Garrett, T.K., Newton, K., & Steeds, W. (2001). The Motor Vehicle. Reed Educational and Professional Publishing Ltd.

  3. Boyce, M.P. (2002). Gas Turbine Engineering Handbook (2nd ed.). Gulf Professional Publishing.

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* This information is provided as is and may be out of date. Please contact us or the manufacturer to verify warranty coverage.
* Variable geometry turbocharger and electronic actuator repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after October 1, 2018.
* Diesel Oxidation Catalyst (DOC), Diesel Particulate Filter (DPF), Selective Catalyst Reduction (SCR) catalyst, and Electronic Control Module (ECM) repairs are not eligible to be claimed as over-the-counter under New or ReCon parts warranty for parts installed after January 1, 2020.
* These restrictions are only applicable to New parts and ReCon parts coverages for the components listed above sold to a customer in the US or Canada. All other coverages are excluded. All other regions are excluded.