Bobcat T300 track squeal

I have a bobcat t300 that is a 2003 model. The motor runs well. After driving the loader for about 100 yards the left side track started to squeal. It was quiet at first and cold outside so, I let it idle for about 5 more min. to let the hyd oil warm. I thought it just might be a stone caught in the track so I kept going slowly. Then after about 100 more yards the loader started squeal loudly and not want to move on the left side. After sitting for about 1 hour i tried to get it to a place i could work on it and it moved easier but still squealed. I have cleaned the tracks of rocks and dirt and added oil to the main sprocket hub. Any thoughts?
BTW i am new to forums so let me know if I'm not doing something correct. Thanks