Mechanism for testing hps racks under load

The MS521 load simulation mechanism is an advanced testing tool designed to work alongside the MS502M test bench and MS561 controller. It enables accurate diagnostics of hydraulic (HPS) and electric (EPS) power steering racks, allowing technicians to detect faults that only appear under load conditions.

By applying adjustable resistance to the steering rack movement—simulating real-world conditions—the MS521 helps identify:

• Leaking hydraulic distribution valves
• Worn central seals in hydraulic cylinders
• Midsection wear of hydraulic cylinders
• Mechanical faults in EPS racks

Key features & advantages

• Universal mounting mechanism – fits all steering rack types
• Quick and easy installation
• Adjustable load simulation for precise diagnostics
• Works with MS502M and MS561 for comprehensive testing

Technical specifications

Equipment package

• MS521 mechanism for EPS rack diagnostics
• Set of steering rack shaft stoppers – MS00110
• Stopper caps