5129478 Hydraulic Gear Pump for FIAT Tractor 55-46, 55-46DT, 55-56, 55-56DT, 60-56, 60-56DT, 65-46, 65-46DT, 70-66, 70-66DT

The 5129478 hydraulic gear pump is a replacement part designed for various FIAT tractor models, including 55-46, 55-46DT, 55-56, 55-56DT, 60-56, 60-56DT, 65-46, 65-46DT, 70-66, 70-66DT, 70-66S, 80-66, 80-66DT, 580, 580DT, 640, 640DT, 680, 680DT, 780, 780DT, 880, 880DT, 880-5, 880-5DT, 980, and 980DT.  This tractor hydraulic pump is responsible for generating the hydraulic pressure necessary to operate various tractor systems, including the lifting, steering, and auxiliary hydraulic functions. Built with precision engineering, the gear pump ensures efficient fluid flow and consistent pressure to support the demanding tasks of agricultural and industrial use.

5129478 Hydraulic Gear Pump Specifications

• Compatible with FIAT Tractor(s): 55-46, 55-46DT, 55-56, 55-56DT, 60-56, 60-56DT, 65-46, 65-46DT, 70-66, 70-66DT, 70-66S, 80-66, 80-66DT, 580 (s/n 20873-earlier), 580DT (s/n 20873-earlier), 640, 640DT, 680 (s/n 43653-earlier), 680DT (s/n 43653-earlier), 780 (s/n 688753-earlier), 780DT (s/n 688753-earlier), 880, 880-5 (s/n 303555-earlier), 880-5DT (s/n 303555-earlier), 880DT, 980 (s/n 708862-earlier), 980DT (s/n 708862-earlier)
• Compatible with Ford Tractor(s): 4030, 4230, 4430
• Compatible with Case IH Tractor(s): JX1060C, JX1070C, JX1075C
• Compatible with Hesston Tractor(s): 55-46, 55-56, 65-46, 70-66, 80-66, 580, 680, 780, 880, 980
• Compatible with New Holland Tractor(s): TN55, TN55D, TN55S, TN60A, TN60DA, TN60SA, TN65, TN65D, TN65F, TN65S, TN70, TN70A, TN70D, TN70DA, TN70F, TN70S, TN70SA, TN75, TN75A, TN75D, TN75DA, TN75F, TN75FA, TN75S, TN75SA, TN80F, TN85FA, TN90F, TN95F, TN95FA, 4230, 4430
• Replacement for Case IH OEM Number(s): 5179730
• Replacement for FIAT OEM Number(s): 5129478, 1901323, 569306, 5179730, 1930058, 0510525357, 8280040
• Replacement for Ford OEM Number(s): 5179730
• Replacement for Hesston OEM Number(s): 5179729
• Replacement for New Holland OEM Number(s): 5179730, 8280040, 5129478, 5179729

Tractor Hydraulic Gear Pump Benefits

• Enhanced Hydraulic Performance
  The tractor hydraulic gear pump delivers consistent and high-pressure fluid flow, ensuring efficient operation of hydraulic systems. This supports critical functions like lifting heavy implements, steering, and powering attachments, improving overall tractor productivity and performance in demanding agricultural tasks.
• Durable Construction
  Built from robust materials like cast iron or aluminum, hydraulic pumps withstand harsh operating conditions. Their rugged design resists wear, corrosion, and high pressures, ensuring long-term reliability and reducing the need for frequent replacements, even in intensive farming environments.
• Precise Fluid Control
  Gear pumps provide accurate and steady fluid displacement, minimizing energy loss. This precision enhances the responsiveness of hydraulic systems, allowing operators to control implements with greater accuracy, which is essential for tasks like plowing, seeding, or harvesting.
• Low Maintenance Requirements
  Hydraulic gear pumps feature a simple design with fewer moving parts, reducing maintenance needs. Routine checks and occasional lubrication keep them operational, saving time and costs for farmers while ensuring consistent performance over extended periods.
• Cost-Effective Operation
  These tractor hydraulic pumps are energy-efficient, requiring less power to operate compared to other pump types. This reduces fuel consumption, lowering operating costs. Their affordability and availability as aftermarket parts make them a practical choice for tractor repairs.
• Versatile Compatibility
  Hydraulic gear pumps are designed to fit a wide range of tractor models, including brands like FIAT, New Holland, and Case IH. This versatility ensures easy integration into existing systems, providing reliable hydraulic power across various agricultural applications.

How a Tractor Hydraulic Pump Works?

A tractor hydraulic gear pump operates by generating hydraulic pressure to power various systems and mechanisms within the tractor, such as steering, lifting implements, and auxiliary hydraulics. The tractor hydraulic pump works on the principle of positive displacement, meaning it transfers a fixed amount of hydraulic fluid with each rotation of its gears. This process begins when the pump is driven by the tractor's engine or PTO (Power Take-Off) shaft, creating the necessary motion to drive its internal components.

Inside the hydraulic pump, two meshing gears (a drive gear and an idler gear) are housed in a tightly sealed chamber. As these gears rotate, hydraulic fluid is drawn into the pump through the inlet port. The rotation of the gears traps the fluid between the gear teeth and the pump housing, creating a continuous flow of fluid. This trapped fluid is carried around the outer edges of the gears toward the outlet port.

Once the fluid reaches the outlet port, it is forced out under high pressure into the tractor’s hydraulic system. This pressurized fluid powers hydraulic cylinders, motors, and other components, enabling tasks such as lifting heavy implements, steering control, and operating auxiliary equipment. The system also includes a pressure relief valve to manage excess pressure, ensuring safe operation.

The hydraulic gear pump is efficient, compact, and durable, making it ideal for demanding agricultural and industrial applications. Its simple design ensures reliable performance with minimal maintenance.