Posted by Andy R on October 29, 2017 at 22:22:01 from (166.181.81.21):
Over the years I have had to replace a couple hydraulic pipes on my John Deere combines due to leaking. I think the leaks were always near a fitting on something like a cast valve body. I noticed the feeder house was all oily today and looked under the cab at the main valve and saw some oil dripping. When we quit I laid on the feeder house and stuck my head under the cab to take a closer look at the main valve. I could see where it was leaking. I loosened and re - tightened the compression fitting. Pipe has a double flare. Didn't help. Might have made it worst. I assume there is a crack at or near the end of the pipe. Problem is I can't see a crack. It is possible to have a hairline crack and not be able to see it with the naked eye?????? 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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