Very clear and concise answer to about 95% of gear pump seal failure, the one thing I may add is IF the housing is so worn that internal pressure will build to the point that the seal are blown. Just like Jan says most common is pump put together wrong but if the end plates or housing is worn those seals are not made to hold pump pressure.
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Today's Featured Article - A Lifetime of Farm Machinery - by Joe Michaels. I am a mechanical engineer by profession, specializing in powerplant work. I worked as a machinist and engine erector, with time spent overseas. I have always had a love for machinery, and an appreciation for farming and farm machinery. I was born and raised in Brooklyn, New York. Not a place one would associate with farms or farm machinery. I credit my parents for instilling a lot of good values, a respect for learning, a knowledge of various skills and a little knowledge of farming in me, amo
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