CHINA HEAVY LIFT Goldhofer model SPMT Hydraulic system is composed of driving system, steering system, and hydraulic suspension system. Hydraulic driving system is a close-circuit which consists of variable pump and variable motor. Engine drives the variable closed pump and delivery hydraulic oil to motor parallel.
Variable of hydraulic pump was realized by DA valve and variable of hydraulic motor was realized by EP Control. Both Steering system and hydraulic suspension, which features load sensitive, are open system and power by open pump. Each steering suspension is driven by steering cylinder. The movements of the hydraulic suspension such as lifting and lowering as well as platform leveling adjustment are controlled by solenoid valve.