14530502 gear pump for volvo excavator OEM parts Hydraulic Pump For Sale Volvo Excavator Part Number EC360B Gear Pump 14530502 GEAR PUMP. A gear pump uses the meshing of gears to pump fluid by displacement. They are one of the most common types of pumps for hydraulic fluid power applications. Brand Name Volvo Excavator Part Gear Pump14561970 GEAR PUMP Product Name Gear Pump Part Number 14530502 Displacement 25/16 imported oil 1 Oil outlet G3/4, G1/2.