135G - EXCAVATOR 21 Vehicle Main Hydraulic System Parts group 21 Vehicle Main Hydraulic System 2161 Hydraulic Pumps & Drives . Hydraulic Pump Hydraulic Pump Mounting Hydraulic Pump Regulator 1 Hydraulic Pump 2 Regulator Hydraulic Pump Rotating Group Hydraulic Solenoid Valve Kit Pilot Pump Components 2162 Hyd Selective Control & Load Holding Valves . Control Valve and Pressure Relief Valves Control Valve Spools, 5 Spool Side, 1 Control Valve Spools, 5 Spool Side, 2 Control Valve Spools, 4 Spool Side Control Valve Bottom Control Valve End Caps, Right Control Valve End Caps, Left Control Valve Hardware and O-Rings 2164 Hydraulic Reservoir, Filter & Cooler . Hydraulic Filter Restriction Indicator Kit Hydraulic Oil Reservoir Hydraulic Oil Reservoir Support Select group 21 Vehicle Main Hydraulic System John Deere: 2161 Hydraulic Pumps & Drives 2162 Hyd Selective Control & Load Holding Valves 2164 Hydraulic Reservoir, Filter & Cooler