Cat High Pressure Piston Pump 104-1752 For D9R Tracked Bulldozer

Hydraulic Piston Pump Introduction

The 104-1752 is a variable displacement axial hydraulic piston pump designed specifically for the hydraulic system of the D9R crawler bulldozer. Compatible with 3408/3408C series engines, it provides high-pressure hydraulic power, supporting heavy-duty operations such as blade and ripper work. The pump features a high-strength cast housing and precision rotating assembly, with variable flow regulation capabilities. It automatically optimizes output based on load, improving energy efficiency and reducing heat generation. Highly corrosion-resistant, it is suitable for long-term reliable operation in harsh environments such as mines and earthmoving sites.

This series of ultra-low noise axial piston pump specifically developed to minimize audible operation and pressure ripple. Through careful port timing, piston design, and damping features, it achieves quiet performance ideal for indoor industrial settings, test facilities, and noise-sensitive environments where operator comfort and compliance with regulations are priorities.

As a top domestic hydraulic manufacturer, Hebei Runhe has 12+ years of expertise. Its product range covers hydraulic cylinders, pumps and motors, widely used in printing machinery, intelligent storage and port ships. It excels in customized services, with products compatible with major European, American and excavator brands.

Hydraulic Piston Pump Models

Hydraulic Piston Pump Usage Precautions

• Hydraulic oil cleanliness: This is the most critical factor for pump life. Contaminants accelerate wear on piston slippers, swashplates, and cylinder blocks, leading to internal damage. Regularly sample and test the oil from turbulent areas in the hydraulic circuit, use high-cleanliness hydraulic oil, and replace filters promptly. Avoiding oil contamination is key to preventing malfunctions.
• Installation and Start-up: During installation, ensure the pump shaft is aligned and tightened to the correct torque, avoiding overloading the bearings. Thoroughly prime the pump before the first start-up and slowly warm it to operating temperature. Ensure sufficient pressure at the inlet at rated speed (typically 0.2-0.4 MPa provided by a makeup pump); dry running or insufficient self-priming is prohibited.
• Fault Prevention: Piston slipper wear is a common starting point; regular inspection and timely replacement of worn parts can prevent complete pump failure. Stop the pump immediately and inspect for any abnormalities (such as increased noise or decreased flow).

Hydraulic Piston Pump Advantage

1. High Energy Efficiency

The variable displacement design adjusts the flow rate in real time according to load demand, outputting only the required hydraulic oil. This avoids the energy waste of fixed displacement pumps, significantly reducing fuel consumption and system heat generation, making it particularly suitable for D9R bulldozers in variable load operations (such as shoveling and leveling).

2. Precise Control

Stepless variable flow is achieved through swashplate angle adjustment, providing precise pressure and flow control, improving equipment response speed and operational accuracy, reducing component wear, and extending the overall hydraulic system life.

3. High Reliability and Durability

Utilizing high-strength materials and precision structures, it is resistant to high pressure and corrosion, specifically designed for harsh environments such as mines and earthmoving, ensuring long-term stable operation and low maintenance costs.

4. Powerful Performance

Strong high-pressure output capability supports heavy-duty operations of the D9R large bulldozer, providing powerful performance while maintaining low noise, compact size, and easy installation.