Went to try to diagnose an 815 that won't move today. Happened once before but started to move again and work, but today it will not move again. Fluid is up in the reservoir. Took the lines loose where they come out of the pump and go to the Hydrostat motor. Fluid comes out and no air. Seems to be under some pressure but has fluid coming whether the lever is ahead or back the same. Just cracked them loose there is all. No turning of the shafts out of the gearbox to the final drives. Any problems with the inch valves or is there a place to check pressures? This combine is made into a forklift, kinda handy but no moving ahead or back right now. Thanks for your help or advise