Thanks Nick that is similar to the way i have mine plumbed !What is to the rear of your remote reservoir,it appears to be a filter? What i have done in the last couple days is removed PTO shaft and removed entire hydraulic unit. I then unbolted the pump an reinstalled pto shaft with pump .Then made mount brackets and homemade fitting plate 1&quot; inlet from a 5 gallon reservoir and 3/4&quot; outlet to a pail then started tractor and let run for 30 seconds and had dad watch oil from pump .In 30 seconds we had heavy flow of very foamy oil about 8&quot; up a five gallon bucket,But when foam settled only had about a quart of oil . I believe bearings are wore enough that can push gears under pressure out to center plate .May also have seals allowing air to be pulled in on vacuum side of pump. I will now find and replace hydraulic pump .I sure hope this resolves all my issues