230LC - EXCAVATOR 21 Vehicle Main Hydraulic System Parts group 21 Vehicle Main Hydraulic System 2160 Vehicle Hydraulics . Main Hydraulic Pump Main Hydraulic Pump Hydraulic Pump Regulator Pilot Pump Hydraulic Oil Tank / Filter Suction Lines (Hydraulic Pump) Delivery Lines (Hydraulic Pump To Control Valve) Hydraulic Filter Restriction Indicator Auxiliary Drive Gear Adapter Auxiliary Drive Gear Adapter ANTI-DRIFT KIT ANTI-DRIFT KIT Boom Anti-Drift Kit Arm Anti-Drift Kit Select group 21 Vehicle Main Hydraulic System John Deere: 2160 Vehicle Hydraulics