Hello, I have a Kubota U50 3@ 2006 model. (Similar to the U45 and KX161). Recently I have noticed some type of whistling noise (sounds like an air leak) coming from the front/ underneath the cab. Can not recall hearing this before. Anybody out there who can say this is familiar? Or has an idea what this can be?
Its coming from an area around the top of the valveblock / hydraulic oil tank...