250GLC - EXCAVATOR 21 Vehicle Main Hydraulic System Parts group 21 Vehicle Main Hydraulic System 2160 Vehicle Hydraulics . Control Valve End Caps (5 Spool Side) Control Valve Body and Spools (4 Spool Side) Control Valve End Caps (4 Spool Side) Control Valve Body and Spools (5 Spool Side) Control Valve Hardware and O-Rings Control Valve Mounting Brackets Solenoid Valve 2161 Hydraulic Pumps & Drives . Hydraulic Pump Hydraulic Pump Rotating Group Components Hydraulic Pump Regulator (1) Components Hydraulic Pump Regulator 2 Pilot Pump Components 2164 Hydraulic Reservoir, Filter & Cooler . Hydraulic Oil Reservoir Select group 21 Vehicle Main Hydraulic System John Deere: 2160 Vehicle Hydraulics 2161 Hydraulic Pumps & Drives 2164 Hydraulic Reservoir, Filter & Cooler