The crankshaft may have failed from metal fatigue. I would have the block magna-fluxed and another used crankshaft. We had a brand new crankshaft to break in a new engine. It was from a military vehicle and we were running it on a stationary dynamometer. I was on the midnight shift and the engine made a terrible noise and the scale reading on the dynamometer was vibrating bad. I shut the engine down and called the project engineer at home. He said to standby until he arrived.
When he arrived he wanted to hear the engine noise so I stared the engine and he said to shut it down, but it took awhile since the dynamometer kept spinning the engine. We took an oil sample and pulled the engine off the test stand after disconnecting all the instrumentation. Dropped the oil pan and found the crankshaft had broken in the counterweight. The dayshift installed a new shaft and the second shift installed the engine on the test stand. The test continued when my shift started and we had no more failures. Hal
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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