Product Introduction This hydraulic fan gear pump supplies pressurized oil for the cooling fan motor and is compatible with the E330C excavator. It maintains the normal radiator cooling temperature for the entire hydraulic system. Featuring a precision gear structure, it delivers stable oil output and excellent wear resistance, making it ideal for overhaul and replacement applications. Interchange Part Numbers: 283-5992, 194-8384 Common Faults Fan speed too slow or fan not