Need a little help. So i am trying to diagnose a hitch problem that i have had since buying the tractor. It is very slow to lift, a little jerky, and the pump is somewhat noisy (you can hear it rattling in there), obviously this gets much worse the hotter the oil gets. It also drifts down in about 2 minutes with a very heavily built 6 foot bushhog.Since it has been not right, and since oil prices are so high i wanted to wait to change the oil till i knew that it was right, knowing that if the oil wasn"t the problem i would lose 8 gallons of oil. I thought the oil look decent. Well i pulled the stack tube, o-rings are fine. And this afternoon i pulled the response cover (the right side) off to look for welling. The oil looks awful when you can see it better, slightly emulsified, greyish, generally nasty, and seemingly very thin, but with the tractor running and lifting the hitch, not the slightest bit of welling from anywhere and none seemingly coming down from the cylinder. My local tractor experts, are leaning on the blow off being faulty or open a little but i would think that would lead to some welling. My question is? Is it possible that old nasty seemingly very thin oil would cause slow lifting slightly jerky noisy pump? I guess that it could but looking for a second opinion? Also what oil does the tranny/hydro take? My manual says m-1129a, but not sure if that is just tractor tran?
Thank you so much in advance.
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