Hydraulic Service Inc is a Repair and Sales Company, locally owned and operated in Kelso Washington Since 1976. We specialize in Component Rebuilding, Cylinder Manufacturing, Tubing and Repair Kits, O Rings,Packing, Pump, Motor and Valve Repair, Chrome Rods, System Design, Fabrication and Installation, Pumps, Motors and Valves, Field Service, Troubleshooting, Hose & Fittings