Case 850 won't move till warm

On a side note something similar to this happened to me last summer. One side of my machine got stuck in the mud and it sank over until the loader was leaning hard to the left. The transmission pressure dropped off and power to the tracks basically went to zero. I put some more oil in it to raise the level which definitely helped, but still even with good pressure the crawler wouldn't move for some reason. So I just kept switching from reverse to forward and then applying throttle, and then forward to reverse and applying throttle. I noticed that the tracks started to slowly move just a bit during this process and then noticed the transmission oil temp jumped up to 240 deg F (normally runs 190 or so). When I saw it go that high of course I backed off and it very quickly dropped down to normal temp...but I noticed that more and more power was getting to the tracks after that. It was as if the hotter the oil got the more power was being transferred to the tracks. I'm still not sure exactly why that happened, considering that the loader would always put full power to the tracks even with cold oil before. But on this instance the heated oil definitely seemed to help.

Anyway that whole process was started by oil starvation due to a bad tilt, so at a minimum I would definitely make sure the machine is on level ground and that the oil level is fully up to level. If there is anyway you can check the pickup tube that might be helpful too. Sorry can't offer more than this.

Good luck