Abstract: The present invention is a suspension system for a vehicle such as the High Mobility Multi Wheeled Vehicle (HMMWV) or more commonly known as the HUMVEE. The suspension system comprises at least one overload spring, at least one centering plate, and at least two overload spring brackets. Installation of the suspension system consists of first attaching the center plate to the frame. Next, the overload spring bracket is mounted on the vehicle and then the overload springs are secured to the center plate and the overload spring bracket. In use, when a vehicle have the improved suspension system encounters a bump or any other obstacle that engages the suspension, the overload spring is compressed in the middle while the ends are raised which reduces the force on the existing suspension system.

Abstract: A hydraulic vehicle jack system that safely lifts vehicles without using the vehicle as a power source power source and without moving mechanical parts. The system comprises: (a) a hydraulic vehicle jack mounted to the chassis of a vehicle near one of its wheels; (b) a hydraulic pump system to provide pressurized fluid to the hydraulic vehicle jack; and (c) a control device to activate the hydraulic pump system. Also disclosed is a method for lifting a vehicle.