Short Description
Premium aftermarket 172-5637 (CAT Reman: 10R-1300) Axial Piston Variable Displacement Hydraulic Pump, engineered to serve as a 100% seamless drop-in alternative for original Caterpillar 428D, 432D, 420D, and 442D Backhoe Loaders. Built to original factory tolerances and cross-referenced with Bosch Rexroth technical standards, delivering outstanding pressure-retention, high volumetric efficiency, and extended uptime under harsh excavation environments [cite: Gemini Chat. Evidence: Sustained engagement and detailed technical discussions regarding a wide range of hydraulic products including Rexroth, Parker, Eaton, and Vickers series.
Technical Parameters Matrix
| Technical Attribute | Specification Data |
|---|---|
| OEM Part Number | 172-5637 / 1725637 |
| CAT Reman Part Number | 10R-1300 / 10R1300 |
| Compatible Equipment | Caterpillar Backhoe Loader 428D, 432D, 420D, 442D |
| Core Pump Base | Rexroth A10VO71 Series Derivative |
| Control Valve Type | DFR1 (Pressure & Flow Compensator / Load Sensing) |
| Pump Type | Axial Piston Pump – Variable Displacement |
| Application Scenario | Main Hydraulic Implement & Steering System |
FAQ
Q1: Is this aftermarket 172-5637 pump fully compatible if my manual lists a Reman part number 10R-1300? A: Yes, 100%. 10R-1300 is Caterpillar’s official designated remanufactured part number for the original 172-5637 assembly. Our factory-new alternative matches both numbers perfectly, utilizing the exact same physical housing dimensions, splined shafts, and valve setups.
Q2: Does the pump come pre-adjusted for the CAT 428D load-sensing system? A: Yes. The integrated DFR1 regulator valve on our 172-5637 pump is factory-calibrated to match original standby and standby differential pressure margins, ensuring optimal boom, bucket, and steering synchronization immediately upon installation.
