4938905
Air Cleaner
Cummins®

Introduction

The Cummins 4938905 Air Cleaner is a component designed for use in commercial trucks. Its purpose is to filter the air entering the engine, ensuring that only clean air reaches the combustion chambers. This contributes to the efficient and reliable operation of the truck’s engine ¹.

Basic Concepts of Air Cleaners

An air cleaner, also known as an air filter, is a device that removes contaminants from the air in a system to improve air quality. In the context of a truck’s engine system, the air cleaner plays a role in protecting the engine by filtering out dust, dirt, and other particles that could cause damage or reduce performance ². Clean air intake is vital for optimal combustion, which in turn affects the engine’s power output and longevity.

Purpose of the Cummins 4938905 Air Cleaner

This Cummins part is specifically engineered to filter the air intake for Cummins engines. By capturing particulate matter, it helps maintain the cleanliness of the engine’s internal components. This filtration process is integral to the engine’s operation, as it ensures that the air-fuel mixture is not contaminated, which could lead to inefficient combustion and increased wear on engine parts ³.

Key Features

The Cummins 4938905 Air Cleaner is characterized by its robust design and the quality of materials used in its construction. It features a high-efficiency filtration media that captures a wide range of particle sizes. The air cleaner’s design also allows for easy maintenance and replacement, which is a practical consideration for fleet managers and maintenance personnel.

Benefits of Using the Cummins 4938905 Air Cleaner

Installing this part can lead to improved engine performance and longevity. By ensuring that the engine breathes clean air, the air cleaner contributes to more efficient combustion, which can result in better fuel economy. Additionally, the reduction of contaminants entering the engine can lead to less wear on engine components, potentially extending the engine’s service life ⁴.

Installation Process

To install the Cummins 4938905 Air Cleaner, one should follow the manufacturer’s instructions, which typically involve disconnecting the old air cleaner, connecting the new one in its place, and ensuring all connections are secure. Tools required may include basic hand tools for disconnection and connection purposes. It is important to take precautions such as ensuring the engine is off and cool before beginning the installation process.

Maintenance and Care

To ensure optimal performance of the Cummins 4938905 Air Cleaner, regular maintenance is recommended. This includes periodic inspection and cleaning of the air cleaner housing and filter element, as well as adhering to the manufacturer’s replacement schedule. Proper maintenance helps to ensure that the air cleaner continues to effectively filter the air intake.

Troubleshooting Common Issues

Common issues with air cleaners may include reduced airflow due to a clogged filter or leaks in the air intake system. To address these problems, one should inspect the air cleaner for signs of damage or excessive dirt buildup and replace the filter element if necessary. Ensuring that all connections are tight and secure can help prevent leaks.

Environmental Impact

The Cummins 4938905 Air Cleaner contributes to reducing emissions by ensuring that the engine operates efficiently with clean air. Efficient combustion leads to lower emissions of pollutants, which is beneficial for environmental sustainability in truck operations ⁴.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a full line of power generation and related technologies. The company has a reputation for innovation and quality in the manufacturing of truck components, including air cleaners. Cummins’ commitment to these values is reflected in the design and performance of the Cummins 4938905 Air Cleaner.

Compatibility

The Cummins Air Cleaner part 4938905 is designed to fit seamlessly with a variety of engine models, ensuring optimal performance and efficiency. This part is engineered to provide clean air to the engine, enhancing its overall operation and longevity.

Compatible Engines

• QSM11 CM570
• QSK19 CM670
• QSK23 CM690

These engines, while distinct in their specifications and applications, share a common requirement for high-quality air filtration. The part 4938905 is meticulously crafted to meet these needs, ensuring a precise fit and reliable performance across the listed engine models.

Grouping by Application

For engines used in heavy-duty applications, such as the QSK19 CM670 and QSK23 CM690, the air cleaner part 4938905 is crucial in maintaining engine efficiency under demanding conditions. These engines often operate in environments where dust and debris can significantly impact performance, making a robust air cleaner essential.

In contrast, the QSM11 CM570 engine, typically found in medium-duty applications, also benefits from the enhanced filtration provided by part 4938905. This ensures that the engine operates smoothly, even in less severe conditions, contributing to overall reliability and performance.

By ensuring a proper fit with these engines, the Cummins Air Cleaner part 4938905 plays a vital role in maintaining engine health and efficiency, regardless of the specific application.

Role of Part 4938905 Air Cleaner in Engine Systems

The air cleaner, specifically part 4938905, is a component in the engine system, working in conjunction with several other parts to ensure optimal engine performance and longevity.

Integration with the Intake Manifold

The air cleaner is positioned upstream of the intake manifold. Its primary function is to filter incoming air, removing contaminants such as dust, dirt, and debris before they enter the engine. This clean air then flows into the intake manifold, where it mixes with fuel to create a combustible mixture.

Interaction with the Throttle Body

Following the intake manifold, the air passes through the throttle body. The air cleaner ensures that the throttle body receives clean air, which is vital for precise air-fuel ratio control. This, in turn, enhances engine responsiveness and efficiency.

Contribution to the Combustion Process

As the air-fuel mixture moves into the combustion chamber, the quality of the air—filtered by the air cleaner—plays a significant role in the combustion process. Clean air ensures more complete and efficient combustion, reducing the likelihood of deposits forming on the pistons, valves, and other internal components.

Support for the Mass Air Flow (MAF) Sensor

The air cleaner also supports the mass air flow (MAF) sensor by providing a consistent flow of clean air. The MAF sensor measures the amount of air entering the engine, and accurate readings are essential for the engine control unit (ECU) to make real-time adjustments to the air-fuel mixture.

Enhancement of Overall Engine Health

By filtering out contaminants, the air cleaner helps maintain the overall health of the engine. Reduced wear on components such as the cylinders, pistons, and valves leads to longer engine life and improved performance.

Conclusion

In summary, the Cummins 4938905 Air Cleaner is a fundamental component that works seamlessly with the intake manifold, throttle body, combustion chamber, and MAF sensor to ensure the engine operates efficiently and remains in optimal condition.