Posted by jimtrs on May 12, 2020 at 15:08:32 from (73.16.69.78):
In Reply to: JD 4239 engine. posted by L8R on May 11, 2020 at 13:07:21:
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Boy if I had a dollar for every time someone said that, I could take some time off :)
The only way to know that for sure is if you owned the machine since new. A lot, most, machines especially older ones worked hard in their day. Common for farm tractors to need rebuilds every 5 years, or less. I've seen diesel engines need rebuilds with less than 2000 hours and some not needing a rebuild at 20,000 hours. All depends on how it was used and maintained.
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Completely normal, after even a short amount of run time
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Takes quality precision instruments, and the knowledge of how to use them.
There will always be uneven wear, on the pistons, on the cylinders, on the crankshaft, rod journals, etc. This is due to the thrust side of all these components taking the brunt of the power stroke.
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