John Deere 544E ZF transmission problems

I purchased a 544E John Deere Loader. I used it about 3 months ago to break apart some snow piles. I used the clutch cut out feature when I was moving the piles. The loader had god power when I was moving the piles and when i parked it. When I tried moving the loader after it sat for a few weeks the loader had good power at first then it acted like it was slipping and it would not pull its own weight. If I shut it off it would move and have power enough to feel it if I applied the brakes but...

John Deere 544E ZF transmission problems