Posted by Andy R on September 19, 2020 at 16:09:27 from (208.126.193.44):
I am hoping I get some information here on Tractor Talk as I was not on the Combine section. I have a John Deere 6620 sidehill with two electric over hydraulic valves. One for the sidehill feature (located on top of the front axle) and one for the dial-a-matic header control (located under the hydraulic reservoir). I notice that each one has slow drip on one side near where the solenoid attaches to the valve block. Has anyone ever rebuilt one of these John Deere electric hydraulic valves? Just wondered if it just drips if that is an easy fix such as an "O" ring under the solenoid or if the entire valve needs to be torn apart. If the entire valve needs to be torn apart how big of a job is it? Thanks.
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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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