4988280
Hydraulic Pump Gasket
Cummins®

The 4988280 Hydraulic Pump Gasket, manufactured by Cummins, is a component designed to ensure the efficient operation of hydraulic systems in commercial trucks. This gasket plays a role in maintaining the integrity of the hydraulic pump’s seal, which is vital for the overall performance of the truck’s hydraulic system. Cummins, a well-established manufacturer in the automotive industry, produces this gasket with a focus on durability and reliability.

Basic Concepts of Hydraulic Pump Gaskets

Hydraulic pump gaskets are sealing components used in hydraulic systems to prevent fluid leaks and maintain system pressure. These gaskets are positioned between the pump housing and the cover, creating a barrier that keeps hydraulic fluid contained within the system. The operation of these gaskets is straightforward yet crucial: they must withstand high pressures and temperatures while remaining flexible enough to adapt to the pump’s movements. In the context of a truck’s hydraulic system, these gaskets contribute to the system’s efficiency by ensuring that hydraulic fluid is delivered consistently and without loss ¹.

Role of the 4988280 Hydraulic Pump Gasket in Truck Operation

This Cummins part plays a specific role in the hydraulic system of a truck by providing a reliable seal between the pump housing and the cover. This seal is instrumental in maintaining the hydraulic pressure necessary for the operation of various truck functions, such as braking, steering, and suspension systems. By ensuring that hydraulic fluid does not leak, the gasket contributes to the system’s efficiency and performance, allowing for smooth and responsive operation of hydraulic-dependent components ².

Key Features

The 4988280 Hydraulic Pump Gasket is characterized by several key features that enhance its performance and durability. It is made from high-quality materials that are resistant to the high pressures and temperatures encountered in hydraulic systems. The design of the gasket includes precise dimensions and a smooth surface finish, which ensure a tight seal and minimize the risk of fluid leakage. Additionally, the gasket may feature unique attributes such as reinforced edges or specialized coatings that further improve its resistance to wear and tear ³.

Benefits

The use of the 4988280 Hydraulic Pump Gasket offers several benefits to truck operators. Improved system reliability is one of the primary advantages, as the gasket’s effective seal helps prevent hydraulic fluid leaks that could lead to system failure. Enhanced performance is another benefit, as the consistent maintenance of hydraulic pressure ensures that hydraulic-dependent truck functions operate smoothly and efficiently. Furthermore, the durability of the gasket can lead to potential cost savings through reduced maintenance needs, as a long-lasting gasket requires less frequent replacement ⁴.

Troubleshooting and Maintenance

Common issues associated with hydraulic pump gaskets include leaks due to wear, damage, or improper installation. Troubleshooting these problems involves inspecting the gasket for signs of wear or damage and ensuring that it is correctly installed. Maintenance practices to ensure the longevity and effectiveness of the 4988280 Hydraulic Pump Gasket include regular inspection for wear, proper installation according to manufacturer guidelines, and replacement at recommended intervals or when signs of failure are detected ⁵.

About Cummins

Cummins is a manufacturer with a rich history in the automotive industry, particularly in the production of components for commercial trucks. The company is known for its expertise in engineering and manufacturing, with a strong commitment to quality and innovation. Cummins’ products, including the 4988280 Hydraulic Pump Gasket, are designed to meet the demanding requirements of commercial truck applications, ensuring reliability and performance in various operating conditions.

Cummins Hydraulic Pump Gasket 4988280 Compatibility

The Cummins Hydraulic Pump Gasket part number 4988280 is designed to fit a variety of Cummins engine models. This gasket is essential for ensuring a proper seal between the hydraulic pump and the engine block, preventing leaks and maintaining system integrity.

Compatible Engines

• 4B3.9
• 6B5.9
• 6C8.3
• B4.5 Series
  • B4.5 CM2350 B129B
  • B4.5 CM2620 D103B
  • B4.5 CM2670 F139B
  • B4.5 CM2670 F141C
• B5.9 Series
  • B5.9 CM2670 B166C
  • B5.9 G
  • B5.9 GAS PLUS CM556
• B6.7 Series
  • B6.7 CM2350 B135B
  • B6.7 CM2670 B153B
  • B6.7 CM2670 B164C
  • B6.7 G CMOH6.0 B125
• C Series
  • C GAS PLUS CM556
  • C8.3 G
• F Series
  • F3.8 CM2350 F128C
  • F4.5 CM2620 F139B
  • F4.5 CM2620 F141C
• G Series
  • G5.9
  • G855
  • G855 CM558
  • GTA855 CM558 (CM2358) G101
• ISB/ISD Series
  • ISB CM550
  • ISB/ISD4.5 CM2150 B119
  • ISB/ISD6.7 CM2150 SN

Role of Part 4988280 Hydraulic Pump Gasket in Engine Systems

The 4988280 Hydraulic Pump Gasket is an essential component in ensuring the efficient operation of various engine systems. Its primary function is to create a seal between the hydraulic pump and the engine block or other mating surfaces, preventing fluid leaks and maintaining system integrity.

Integration with Engine Components

1. Accessory W-W Governor Drive: The gasket ensures a secure seal when the accessory W-W governor drive is connected to the hydraulic pump, allowing for precise control of engine speed and performance.
2. Air Compressor Kit: In systems where an air compressor is driven by the hydraulic pump, the gasket prevents hydraulic fluid from mixing with the compressed air, maintaining the purity and efficiency of the air supply.
3. Auxiliary Pump: When an auxiliary pump is integrated into the system, the gasket ensures that the hydraulic fluid remains contained, allowing the auxiliary pump to operate without contamination or loss of pressure.
4. Base Parts and Block Short Kit: The gasket plays a vital role in the assembly of base parts and block short kits by sealing the hydraulic pump to the engine block, ensuring that hydraulic fluid does not leak into the crankcase.
5. Cyl Short NTC-400 and Coupling: In engines utilizing the Cyl Short NTC-400 and coupling systems, the gasket ensures that the hydraulic pump remains sealed, providing consistent hydraulic pressure for engine components.
6. Fuel Pump and Drive Accessory: The gasket is instrumental in sealing the hydraulic pump in fuel pump and drive accessory setups, preventing hydraulic fluid from interfering with fuel system operations.
7. EBM: Pump, Auxiliary: For engines with an EBM pump and auxiliary systems, the gasket ensures that the hydraulic pump operates within a sealed environment, enhancing the reliability of auxiliary functions.
8. Fuel Transfer Kit and Fuel Transfer Pump Mounting: In fuel transfer applications, the gasket maintains the integrity of the hydraulic system, ensuring that fuel transfer pumps receive consistent hydraulic pressure without contamination.
9. Hydraulic Pump Drive: The gasket is essential for the hydraulic pump drive system, ensuring that the pump operates efficiently by maintaining a seal against the engine block or other components.
10. Kit On Board Spares: When utilizing kit on board spares, the gasket ensures that the hydraulic pump remains sealed, allowing for quick and efficient replacements without fluid loss.
11. Lubricating Oil Pump and Lubricating Oil Pump Kit: In systems where the hydraulic pump is integrated with the lubricating oil pump, the gasket prevents cross-contamination between hydraulic fluid and lubricating oil, ensuring optimal lubrication and hydraulic performance.
12. Main Bearing Shell and Overhaul Kit: During engine overhauls, the gasket ensures that the hydraulic pump is properly sealed to the main bearing shell, facilitating a smooth and leak-free reassembly.
13. Plate Cover and Power Steering Pump: In power steering applications, the gasket ensures that the hydraulic pump remains sealed to the plate cover and power steering pump, providing consistent hydraulic assistance for steering operations.
14. Rear Bearing and Cover Support: The gasket plays a role in sealing the hydraulic pump to the rear bearing and cover support, ensuring that the pump operates within a contained environment.
15. Short Assembly Block and System Ignition: In short assembly block configurations and ignition systems, the gasket ensures that the hydraulic pump is sealed, allowing for reliable ignition and engine start-up procedures.
16. Woodward Governor: When integrated with a Woodward governor, the gasket ensures that the hydraulic pump remains sealed, allowing the governor to maintain precise control over engine parameters.

Conclusion

The 4988280 Hydraulic Pump Gasket is a critical component for the reliable and efficient operation of hydraulic systems in commercial trucks. Its role in maintaining system integrity, preventing fluid leaks, and ensuring consistent hydraulic pressure is essential for the performance of various truck functions. The gasket’s design, featuring high-quality materials and precise dimensions, contributes to its durability and effectiveness. Regular maintenance and proper installation are key to maximizing the benefits of this Cummins part, ensuring long-term reliability and performance in demanding commercial truck applications.