I used a new holland filter with travelers universal hydraulic fluid from tractor supply.What filter and oil did you use? OEM filter and oil?
thanks 1 rubber hose From the oil filter to pump could have a small leak.Any rubber hoses on the pump inlet line? If yes check these for any signs of cracks. Noisy pump generally indicates pump is being starved of oil or cavitating.
I hope at least your machine is gear drive if your useing that fluid. This machine does have wet brakes and possibly a pto wet brake and I wouldnt be useing anything but NH fluid. It's about $90 for 5gal but cheaper than parts.I used a new holland filter with travelers universal hydraulic fluid from tractor supply.