Steering-System Hydraulic Supply
The 580K steering-system oil is supplied by the 26-gallon-per-minute (98 L/min) section of the engine-driven, tandem, gear-type pump. This section also supplies oil to the loader and backhoe circuits.
The 580SE steering-system oil is supplied by the 7-gallon-per-minute (26 L/min) section of an engine-driven, tandem, gear-type pump. This section also supplies oil to the backhoe circuit.
The 580K steering system is load-sensing, supply-on-demand, requiring a maximum of 3.5 gallons per minute (13 L/min) when turning the wheels from stop to stop. Oil not being used by the steering system is made available to the loader or backhoe circuits. Benefits of this system include: