Seastar Hh5271 Parts Diagram =link= Info

Inside the helm, there are two check valves that direct flow from the reservoir to the pressure side. If these fail, you may experience "wheel spinning" where the helm turns but the rudders don’t move.

An axial piston pump where every bearing point runs on roller or ball races for low friction. Seastar Hh5271 Parts Diagram

Note: This paper is a representative academic exercise. For actual repair, always consult the official manual and safety guidelines from Dometic Marine. Inside the helm, there are two check valves