Excavator Hydraulic Pump 3640983 OEM Replacement

Hydraulic Piston Pump
May 22, 2026
Video Description:
In this walkthrough, we highlight key design ideas and how they translate to performance. Join us as we demonstrate the JCB 332/H0538 gear motor, showing its installation process, compatibility with 531-70 and 541-70 telehandlers, and real-world performance in cooling fan drive applications. Learn about its fixed-displacement design, durability features, and why it serves as a reliable OEM replacement solution for construction machinery maintenance.