My aux hyd quits working when the oil gets hot after I use it a lot. After the tractor cools it works fine. The tractor is not overheating. My research shows it is probably the pump. Is there any simple fix? Can the pump be rebuilt? New ones aren't cheap and it looks like I have to remove the FEL frame to get it off? I was hoping heavier oil or some after market product might help.
What is "auxiliary" hydraulics?
You have a loader and a 3pt.
Do you you also have rear remotes?
Which of those quits working?
Whatever you have you find the source of the problem with a pressure gauge and testing at various points in the circuit. Guessing and blindly throwing new parts at it will simply waste time and money.
There is no "hydraulic mechanic in a can" that will fix a loss in pressure.
Dan