We have a 1946 Farmall model M that gets used every year in our haying process, so just to let you know I did appreciate this video, although the two tractors are not exactly the same. Without looking at the records kept on the M, I believe we went through the same process around 1980 as well on the M and rebuilt it. Thanks for your time and a reminder of the work needed. Nick, North West Farmer (Oregon) P.S. Our old M is still going strong with good oil pressure and almost no visible exhaust smoke. A large difference in usage time, estimating our annual hours at possibly not more than 50 hours per annum, or 2100 engine hours (no hour meter on the tractor)