Have a -2004 model 6480 with twin flow hydraulics. Hydraulics performance (spools, front end loader) feels a bit poor compared to promised 100l/min flow rate. Sometimes also 150micron filter warning light is showing and at that time hyd performance is more poor: steering tackles in fast movements, ploughs are not turning, etc. That 150 micron filter has been changed couple of times and there has not been any visible dirt there. If it would been only filter sensor problem,it would not affect to hydraulics performance thought. Anyone have similar experiences and/or solution to a problem ?
Ex owner told that all filters and oil has been changed before I bought the tractor. If that is true, then oil and filters have been changed less that 150 hours ago. Of course I cannot be sure is it true. Oil looked clear when I changed that 150m filter.
According to manual that warning light is for that particular filter but don’t know is it measuring pressure in the whole system, so is also problems in other filters affecting to the light.
Have to change them all and the oil but would not like to do it “just in case” because it costs like 800.
If everything comes back after the filter change, it sounds like the filter? If it makes no difference, probably not the filter. Look for strange colour (steel/bronze) in the oil as you drain the filter. All 3 will need to be checked if one has clogged in 50 hours. Wonder, why did X change the oil and filters just before selling the tractor?