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 - Third Brush Generators - by Chris Pratt. While I love straightening sheet metal, cleaning, and painting old tractors, I use every excuse to avoid working on the on the electrics. I find the whole process sheer mystery. I have picked up and attempted to read every auto and farm electrics book with no improvement in the situation. They all seem to start with a chapter entitled "Theory of Electricity". After a few paragraphs I usually close the book and go back to banging out dents. A good friend and I were recently discussing our tractor electrical systems when he stated "I figure it all comes back to applying Ohms Law". At this point
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