I am looking at a possible purchase of a 1995 year model Cat 939 track loader serial no. 9GL00512 from a dirt contractor that is down sizing his operation. I have only seen a photo of the unit. He said it weighed approximately 18,000 lbs and was 80 - 90hp. From the photo the undercarriage looks good. Can anyone tell me anything about this model and what to look for when I go look at it. I need a machine to load calache in a 8 yd dump truck and push trees out of fence rows on my farm. Will this machine be powerful enough to do this. I am not sure the picture that I have attached will go thru.