844K - LOADER, FOUR-WHEEL DRIVE 2162 Hydraulics Selective Control & Load Holding Valves Parts group 2162 Hydraulics Selective Control & Load Holding Valves 2162 Hydraulics Selective Control & Load Holding Valves . Main Hydraulic Pump Manifold Pressure Regulator Valve (PRV) Hydraulic Warm-up Circuit Kit Fitting, No Pin Disconnect Hydraulic Warm-up Circuit Kit Hydraulic Warm-Up Valve