The adjustment is important as well. The feel of a feeler gauge is critical. The tension on the feeler as it is pulled out from between the tip of the valve, and the rocker arm has two components, the first is the flatness of the gauge between the surfaces. such that the blade is ferr to find the least thickness, pinched gently, not at some non flat angle. The second is the tension as it is pushed and pulled through the gap. If you pinched a 1 foot steel shop ruler between your fingers hard enough to pick it up and have it dangle from one end, that tension is the same as the push pull feel on the blade. The tip of the rocker arm is often cup shaped and worn from pushing and sliding on the valve. If it is cup shaped and the gauge blade cannot be flat across the surface, the rocker tips will need to be arced on a valve machining tool. Usually they are OK, but I have seen tips with .008 wear that prevents clean adjustment. Jim
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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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