I have a 806. Was planting with it this spring shut it off for the night went to start up next day and had no 3 point and no rear hydraulics. Has been sitting for awhile and getting back to the project now. I replaced the rear 12gpm pump which tested good 25 hrs prior to this happening with a 17gpm pump. Started up tractor and still absolutely no hydraulics. Took out relief valve and found no issues. Then I took rear top link bracket off and started the tractor. Found massive waterfall like stream of oil coming from right side top. Upon further inspection I found the stream coming from someplace up top right above the rock shaft. Seems like it would be something that is feeding the top valves or a plug that blew out? Wondering if anyone has seen a similar problem and what was the fix?