4988675
Hydraulic Pump
Cummins®

The Cummins 4988675 Hydraulic Oil Pump is a component designed to facilitate the operation of hydraulic systems in commercial trucks. Its role is to ensure the efficient circulation of hydraulic fluid, which is vital for the operation of various hydraulic components and systems within the truck. This part is significant due to its contribution to the reliability and performance of the truck’s hydraulic operations.

Basic Concepts of Hydraulic Oil Pumps

Hydraulic systems in trucks utilize hydraulic fluid to transmit force and motion. Hydraulic oil pumps are integral to these systems, as they are responsible for circulating the hydraulic fluid under pressure. This pressurized fluid then powers hydraulic actuators, which convert hydraulic energy into mechanical work. The efficiency and reliability of the hydraulic oil pump directly influence the performance of the entire hydraulic system ¹.

Purpose of the Cummins 4988675 Hydraulic Oil Pump

The Cummins 4988675 Hydraulic Oil Pump is specifically designed to provide consistent and reliable hydraulic fluid circulation in commercial trucks. It plays a role in various hydraulic systems, including those used for braking, steering, and suspension. By maintaining adequate hydraulic pressure, this pump ensures that these systems operate smoothly and efficiently ².

Key Features

The Cummins 4988675 Hydraulic Oil Pump features a robust design that incorporates high-quality materials to ensure durability and performance. Its construction includes precision-machined components that enhance its efficiency and reliability. Additionally, the pump is designed to operate quietly and with minimal maintenance, making it a practical choice for commercial truck applications ³.

Benefits

The Cummins 4988675 Hydraulic Oil Pump offers several benefits, including improved efficiency in hydraulic fluid circulation, which leads to better overall performance of the truck’s hydraulic systems. Its reliable operation contributes to the longevity of these systems, reducing the need for frequent repairs and replacements. Furthermore, the pump’s design ensures consistent hydraulic pressure, which is crucial for the optimal functioning of hydraulic components ⁴.

Installation and Integration

When installing the Cummins 4988675 Hydraulic Oil Pump, it is important to consider compatibility with the truck’s existing hydraulic system. Proper installation involves ensuring that all connections are secure and that the pump is correctly aligned with the system’s components. Following manufacturer guidelines during installation helps to avoid potential issues and ensures the pump operates effectively within the truck’s hydraulic system ⁵.

Maintenance and Troubleshooting

Regular maintenance of the Cummins 4988675 Hydraulic Oil Pump is important to ensure its continued reliable operation. This includes routine inspections for signs of wear or damage, checking hydraulic fluid levels, and ensuring that all connections are tight. Common issues may include leaks or unusual noises, which can often be addressed through proper maintenance practices. Troubleshooting should involve a systematic approach to identify and resolve any problems that arise ⁶.

Performance and Efficiency

The performance and efficiency of the Cummins 4988675 Hydraulic Oil Pump are evident in its ability to maintain consistent hydraulic pressure and flow. This contributes to the overall efficiency of the truck’s hydraulic system, ensuring that hydraulic components operate smoothly and effectively. The pump’s design and construction play a significant role in achieving these performance levels ⁷.

Safety Considerations

When working with the Cummins 4988675 Hydraulic Oil Pump, it is important to follow safety guidelines to protect both the operator and the equipment. This includes handling hydraulic fluids carefully, as they can be hazardous if not managed properly. Additionally, performing maintenance tasks with the system powered down and following all safety protocols helps to prevent accidents and ensures a safe working environment ⁸.

Cummins Overview

Cummins Inc. is a well-established company in the automotive and commercial truck industry, known for its commitment to quality and innovation. With a history of developing reliable and high-performance components, Cummins has built a reputation for excellence. The company’s focus on advancing technology and meeting the needs of its customers underscores its position as a leader in the industry ⁹.

Hydraulic Oil Pump Fitment for Cummins Engines

The Hydraulic Oil Pump part number 4988675, manufactured by Cummins, is designed to be compatible with a range of Cummins engines. This part is integral to the proper functioning of the engine’s hydraulic systems, ensuring that oil is adequately circulated to maintain system pressure and lubrication.

Compatible Engines

• B6.7 G CMOH6.0 B125
• F4.5 CM2620 F139B
• ISB/ISD4.5 CM2150 B119
• ISB/ISD6.7 CM2150 SN
• ISBE CM2150
• ISBE4 CM850
• ISD4.5 CM2220 D108

Grouping of Compatible Engines

The Hydraulic Oil Pump part number 4988675 is suitable for the following groups of engines:

• B6.7 G CMOH6.0 B125
• ISB/ISD4.5 CM2150 B119
• ISD4.5 CM2220 D108

These engines share similar hydraulic system requirements, making the Hydraulic Oil Pump part number 4988675 a versatile fitment option.

• F4.5 CM2620 F139B
• ISB/ISD6.7 CM2150 SN
• ISBE CM2150
• ISBE4 CM850

These engines also have compatible hydraulic systems that require the same Hydraulic Oil Pump part number 4988675 to ensure optimal performance and longevity.

Role of Part 4988675 Hydraulic Oil Pump in Engine Systems

The hydraulic oil pump, specifically part 4988675, is integral to the efficient operation of various engine systems. It is responsible for maintaining the necessary hydraulic pressure that facilitates the smooth functioning of multiple components.

Integration with the Pump System

In the pump system, the hydraulic oil pump ensures a consistent flow of pressurized hydraulic fluid. This fluid is essential for the operation of hydraulic actuators, which are used to control various engine parameters such as fuel injection timing and valve operation. The pump’s reliable performance ensures that these actuators receive the precise amount of hydraulic pressure needed for optimal engine performance ¹⁰.

Contribution to the Auxiliary System

Within the auxiliary system, the hydraulic oil pump plays a significant role in supporting components like power steering systems and brake actuators. By providing the necessary hydraulic pressure, it enables these systems to operate with the required force and responsiveness. This integration enhances the overall driving experience by ensuring that steering and braking functions are performed smoothly and efficiently.

The hydraulic oil pump’s ability to maintain consistent pressure under varying engine loads and conditions is vital for the reliable operation of these interconnected systems. Its role extends beyond simple fluid circulation, contributing to the precise control and performance of critical engine and vehicle functions.

Conclusion

The Cummins 4988675 Hydraulic Oil Pump is a critical component in the hydraulic systems of commercial trucks, ensuring efficient fluid circulation and maintaining system pressure. Its robust design, reliable performance, and compatibility with various Cummins engines make it a valuable asset for maintaining the smooth operation of hydraulic components. Regular maintenance and adherence to safety guidelines are essential for maximizing the longevity and efficiency of this part.