Hello, did you manage to solve the problem? I have the same problem and I can't deal with it, water in oil.(even the same tractor model). I would be very grateful if you could suggest something
/ water contamination on hydraulic fluid on 6900 john deere 1997
Welcome to this forum
Be sure hyd reservoir breather is open IE not clogged so when hyd oil is heated to operating temp moisture can escape through open breather hole. When hyd oil is cool loosen trans drain plug a few rounds so if any water is at bottom of trans case it can leak out around threads of reservoir drain plug.