My son was using my tractor and the loader controller started spewing a lot of fluid so I told him to raise the bucket and disconnect the lines going to the loader. He said the tractor didn't make it to the barn so I went out and started it and it makes a terrible sound coming from the center of the case behind the motor when the rpm goes up and down from midrange. The hoses going to the controller are not hooked together and could the pump be making this noise due to it trying to move the hydraulic fluid and it not being able to circulate? the tractor is still 100 yds from my pole barn.