7810 hydraulic oil heating

Hi I've got a 2003 7810 with the quad range tranny
in it. I was pulling the land roller and after about 40
acres my hydraulic oil started to heat so I changed
the oil filters, changed the sensor and washed the
rad out. After I was done all that I went back to
working it and after maby another 40 acres it was
heating again. I'm not sure what else to try so has
anyone else had this problem before?
 
One of the easiest places is to start by checking the hydraulic oil level. The oil drops out of the sight glass when the tractor is running and remains this way until after it has been shut down for 15 min. or so. If the oil is too high it gets "churned " up by the differential and causes heat. Start with this, if oil level is good you may need an infared thermometer to start checking some components (hitch valve etc) for being hotter than others
 

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