p.s. years ago I worked on Belarus tractors. There was a dealer locally and his mechanics were completely flummoxed by the wiring.
I would go down when I go home from my job to give them a hand. A wire would start out in the harness as red but before long it would change colors a couple of times like they were using up pieces of wire. If you think early Kubota manuals translation to english was bad try Russian to english
Have you checked your fluid? Be sure it is full and look for color change indicating water or air in it. Either can make it look milky. Either can cause issue as air or steam will not compress fully as a liquid will.