I had a leak in my hydraulic line when plowing. The lines were fitting were loose on the plow. So I tighten them up. I though that was the end of my leak.. Then I change the plow for the loader to mover the snow out of the way and again. I saw yellow lines in the snow. Now I look at the fitting on the loader they were tight. Taking a closer look at the marks in the snow I can see about were the leak was.
I look under the tractor and saw the line on the steering rack was loose. I tighten it up and move more snow after adding 2 quarts of oil. Put the tractor on the garage and can out the next day. Oil on the floor. Not much but enough to think I didn't clean off the old oil drip. No it wasn't that it was the line again was loose. Again I tighten the line up. Now I saw a polish mark on the fitting. So I started the tractor and turn the wheel all the way to the left. Sure enough. The R4 tire was hitting the fitting and when backing up the tire would loosen the fitting. It also wore rubber of of the braded line. I went to my JD dealer. Told them what happen. At first they said I can't see that happening. Well we started three 1025R's up with R4 tires and they all hit.
The service manager called JD and ask about the problem. The know about it but don't have a fix for it yet. What they said they will do for a temporary fix is to glue on a wheel weight for a allow rim to the steering stop. This will stop the wheel from hitting until they get a fix for it. The dealer had ordered me a new line and fitting to replace the broken one.
So check your 1025R with R4 tire and see if it hits the steering line fitting on the left side.