The injector is an updated on Stanadyne Roosa pump that appears to be for a 4020. The previous owner said the tractor was one of the last 4010 tractors manufactured and a 4020 engine was factory installed. I have been unable to verify even by going through John Deere. The only thing I do know is the timing is set at top dead center "0" and not 14 degrees before like a typical 4010. The first pump rebuild was by a technician my local John Deere dealer recommended. When I reinstalled the pump and started it and let it idle, the oil light came on and I shut it down immediately smelt diesel on the dipstick and drained the oil pan to find diesel had dumped from the injector. I decided to bite the bullet and had both the pump checked out and repaired by Thompson's Diesel in Oklahoma City which was not cheap. I also had them to rebuild the injectors last fall. I put everything together as per shop manual and bled the lines once started. I bled them again checking to make sure all cylinders were firing but still have a clatter upon starting out or when governor kicks in.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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