4988941
Hydraulic Pump
Cummins®

The Cummins 4988941 Hydraulic Pump is a specialized component designed for use in commercial truck operations. It plays a role in the hydraulic systems of these vehicles by facilitating the transfer of power through pressurized fluid. This part is integral to the efficient operation of various truck systems, enhancing overall performance and reliability.

Basic Concepts of Hydraulic Pumps

Hydraulic systems operate on the principle of fluid power, where a pump pressurizes a liquid to transmit force through hydraulic lines to an actuator. Hydraulic pumps convert mechanical energy into hydraulic energy, which is then used to perform work. These systems are prevalent in commercial trucks for their ability to provide high power density and precise control ¹.

Purpose of the Cummins 4988941 Hydraulic Pump

The Cummins 4988941 Hydraulic Pump is designed to deliver consistent and reliable hydraulic power in commercial truck applications. It is utilized in various truck systems, including braking systems, steering mechanisms, and suspension systems. By providing the necessary hydraulic pressure, this pump ensures that these systems operate smoothly and efficiently.

Key Features

The Cummins 4988941 Hydraulic Pump boasts several key features that enhance its performance and durability. Its design incorporates high-quality construction materials, ensuring resistance to wear and corrosion. Technological advancements in its design contribute to improved efficiency and reliability, making it a robust choice for demanding commercial applications ².

Benefits

The advantages of the Cummins 4988941 Hydraulic Pump include enhanced efficiency and reliability. Its precise engineering allows for optimal hydraulic pressure delivery, which translates to improved performance of the truck’s hydraulic systems. Additionally, the pump’s durability can lead to potential cost savings for fleet operators by reducing the frequency of replacements and repairs ³.

Installation and Integration

Proper installation and integration of the Cummins 4988941 Hydraulic Pump are crucial for ensuring optimal performance and compatibility within a truck’s hydraulic system. Guidelines for installation should be followed to maintain the integrity of the system and ensure that the pump operates within specified parameters. Compatibility with existing systems should be verified to avoid issues during operation.

Troubleshooting and Maintenance

Common issues with hydraulic pumps may include leaks, unusual noises, or inconsistent performance. Troubleshooting steps involve checking for proper fluid levels, inspecting for leaks, and ensuring that all connections are secure. Regular maintenance practices, such as fluid changes and filter replacements, are essential for the longevity and consistent performance of the Cummins 4988941 Hydraulic Pump.

Safety Considerations

When working with hydraulic systems and the Cummins 4988941 Hydraulic Pump, it is important to observe safety practices and precautions. This includes wearing appropriate personal protective equipment, ensuring that the system is depressurized before performing maintenance, and following manufacturer guidelines to prevent accidents and ensure safe operation.

Environmental Impact

Hydraulic systems can have environmental considerations, particularly concerning fluid disposal and energy consumption. Cummins is committed to producing environmentally friendly hydraulic pumps, incorporating design features that reduce energy consumption and using fluids that are less harmful to the environment. Efforts are made to minimize the environmental footprint of these systems.

Cummins Overview

Cummins Inc. is a global power leader that designs, manufactures, and distributes a wide range of power solutions. With a history of innovation and quality, Cummins serves the automotive and commercial vehicle industries, among others. The company’s commitment to advancing technology and sustainability is reflected in its diverse product range, which includes engines, filtration systems, and, notably, hydraulic pumps like the 4988941 ⁴.

Cummins Hydraulic Pump 4988941 Compatibility

The Cummins Hydraulic Pump part number 4988941 is designed to fit seamlessly with a range of Cummins engines, ensuring optimal performance and reliability. This hydraulic pump is engineered to work with the following engines:

• 6C8.3
• ISL9 CM2150 SN
• ISL9.5 CM2880 L138
• L8.9
• L9 CM2670 L128B

For the ISL9 CM2150 SN and ISL9.5 CM2880 L138 engines, the hydraulic pump 4988941 is a critical component that ensures the proper functioning of the engine’s hydraulic systems. These engines are known for their robust performance and efficiency, and the hydraulic pump plays a role in maintaining these characteristics.

Similarly, the L8.9 and L9 CM2670 L128B engines benefit from the precise engineering of the 4988941 hydraulic pump. This part is designed to integrate smoothly with the engine’s hydraulic system, providing the necessary power and control for various engine functions.

The 6C8.3 engine also relies on the 4988941 hydraulic pump to ensure that its hydraulic systems operate efficiently. This engine is known for its durability and reliability, and the hydraulic pump is a key component in maintaining these qualities.

Overall, the Cummins Hydraulic Pump 4988941 is a versatile and essential part for the engines listed, ensuring that they perform at their best under various conditions.

Role of Part 4988941 Hydraulic Pump in Engine Systems

The hydraulic pump, specifically part 4988941, is integral to the operation of various engine systems. It functions by generating hydraulic pressure, which is essential for the actuation of different components within the engine.

Integration with Engine Systems

1. Fuel Injection System: The hydraulic pump provides the necessary pressure for the fuel injectors to operate efficiently. It ensures that fuel is delivered at the correct pressure and timing, which is vital for combustion efficiency and engine performance.

2. Brake System: In hydraulic brake systems, the pump generates the pressure required to engage the brake calipers or wheel cylinders. This ensures that the braking force is applied consistently and reliably, enhancing vehicle safety.

3. Steering System: For power steering systems, the hydraulic pump supplies the pressure needed to assist in steering the vehicle. This reduces the effort required by the driver, especially during low-speed maneuvers or when the vehicle is stationary.

4. Transmission System: In automatic transmissions, the hydraulic pump is responsible for providing the pressure needed to engage and disengage gears. This ensures smooth shifting and optimal transmission performance.

5. Auxiliary Systems: The pump also supports various auxiliary systems such as hydraulic lifts, winches, and other equipment that require hydraulic actuation. It ensures these systems operate with the necessary force and precision.

Auxiliary Functions

Beyond its primary role, the hydraulic pump (part 4988941) also contributes to the efficiency and reliability of auxiliary systems. These include:

• Cooling Systems: Hydraulic pumps can be used in cooling systems to circulate coolant more effectively, ensuring the engine maintains optimal operating temperatures.
• Suspension Systems: In vehicles with hydraulic suspension, the pump provides the pressure needed to adjust the ride height and damping characteristics, improving comfort and handling.

The hydraulic pump’s ability to generate and maintain consistent hydraulic pressure is fundamental to the operation of these engine and auxiliary systems, ensuring they function smoothly and efficiently.

Conclusion

The Cummins 4988941 Hydraulic Pump is a critical component in the hydraulic systems of commercial trucks, ensuring efficient and reliable operation of various engine and auxiliary systems. Its high-quality construction, technological advancements, and compatibility with a range of Cummins engines make it a robust choice for demanding commercial applications. Proper installation, maintenance, and adherence to safety practices are essential for maximizing the performance and longevity of this part.