Hi, I have a pull type Cat grader, the SN is 8H500. We use it on the farm to run thru our field drainage ditches, it has a 12' moldboard and has been converted to hydraulic cyl. for the main control arms. I still have the Cat engine that ran the grader it has a SN of 4D1060 and I had it running a few years ago. It has a Fairbanks Morse magneto. The engine weighs 325 lbs.
I have surfed for detailed info on both of these and I cant find anything. If you have some info on year made, rare, etc. please let me know. Thanks.