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 - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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