Yes removing that leaf spring just made it to where you have zero idea of the fuel setting now. That spring limits how far out the rollers come and that in turn controls the pistons under the rollers. This set the maximum fuel delivery the pump can deliver. It is a very sensitive adjustment. A half a turn on the screw that holds the spring on can easily be 1015% different is the top fuel delivery.
So a word of caution to any others out there that are "rebuilding" one of these pumps because of a governor ring failure. You do not have to take the entire pump apart down to this level. You can slide the roller/guides out and then the plungers with the leaf spring in place. You just need to clean out the fuel passages in the head. 95% of the time compressed air with do this fine. I am not a professional pump guy but have done 40-50 of these that just have that ring fail.
JPayne you will need to have the pump ran on a test stand to have the fuel metering set.
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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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