4667614 Original EX1200-6 Excavator Hydraulic Fan Pump

Part number 4667614 is an original hydraulic fan pump specifically designed for Hitachi EX1200-6 series ultra large mining hydraulic excavators. This component is the core component that drives the hydraulic cooling fan and is mainly suitable for models such as EX1200-6LD and EX1200-6BH. According to market information, the pump may exist as a part or independent component of the K3V280SH+K3V63S main pump assembly.

This product is a Hitachi original variable slant disc axial piston pump or specialized gear pump, which is the power source of an independent hydraulic fan drive system. Its core function is to precisely adjust the output flow and pressure through electro-hydraulic proportional control based on the engine water temperature or hydraulic oil temperature signal, thereby driving a large-sized cooling fan and achieving efficient heat dissipation for the engine, hydraulic oil, and intercooler.

Check the pump body and all pipe joints for oil leakage every 250 working hours; Regularly (e.g. every 1000 hours) inspect the quality of hydraulic oil and replace the original designated model of hydraulic oil and return filter element. Oil contamination is the main cause of pump wear. Fault symptoms and replacement timing: When the cooling fan does not turn, the speed is unstable, there is abnormal noise, or the instrument displays a continuously high water/oil temperature, the pump should be inspected with emphasis. If the pump body leaks severely, the output pressure is insufficient, or internal wear makes it impossible to repair, it needs to be replaced as a whole.