Product Overview This hydraulic fan motor is the drive component of the cooling fan system, compatible with the E330C excavator. It drives the radiator fan to rotate and regulates the cooling temperature of both the engine and the hydraulic oil. Built with a precision piston structure, it delivers stable rotating speed and reliable sealing performance, making it well suited for equipment overhaul and replacement. Interchange Part Numbers: 191-5611 179-9778 Common Faults Fan