I am looking for anyone that owns a M5140, I bought mine about a month ago and noticed a noise in the power steering lines, it sounds like air but there is no sign of air in the hydraulics. The dealer took it back and changed the pump and the filters and it’s still doing it. It sounds similar to a coffee pot percolating when it does it and it does it more when the tractor warms up and mostly at an idle. The dealer contacted Kubota service department and they came and looked at it and said they would research it. I called the dealer Friday and asked if they came up with anything and was told that they looked at two other m5140’s and they did the same thing. I am just trying to make sure this is the case – thanks for looking