Posted by MarkD7F on December 09, 2017 at 19:03:38 from (64.21.253.234):
Found a running Farmall 400 Diesel without a cracked head. Tin looks great along with the rest of the tractor. Noticing when I switch it to diesel after a 5 minute warm up on gas the number 4 cylinder isn't firing. Discovered that there isn't a thermostat. So I covered the radiator with a blanket and then after running it on gas it started firing on diesel. Should there be a thermostat in there and what temp. Also one of the sets of quick couplers, pioneer doesn't let oil into a tip. The system pulls the tractor down but not enough flow to lift a grain auger. Has a one way check valve on it but even the side that doesn't go through the check valve doesn't work. Sweet sounding old tractor tho.
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Today's Featured Article - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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