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 - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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