Volvo fl6 makes the direction. The steering pump shifts because it was hard and from then on when I accelerate the truck and the pump is heated a lot. Volvi to put the old woman, which before not towards noise and also does it. I rub the oil input tube in itself in case it takes air but it is not fixed. They know how to solve it.
Check the direction liquid boat, maybe you can make barboteo in the boat itself and confuse you with the noise that the pump can produce, the returned liquid should enter below not fall above the stored liquid, as if it were the water that falls from a water dam.