Minneapolis Steam Engine Crankshaft Troubleshooting - Horizontal Boring Mill Setup and Indicating

My local threshing show was donated a 25 HP Minneapolis steam traction engine last year. The engine and boiler are in good shape, but we discovered a problem. The connecting rod was traveling at an angular motion. Something I have seen before, but not this bad.

Supposedly this engine suffered a crankpin failure and was repaired. What we assumed would be the crank pin being out of alignment with the crankshaft, was not the case. As bits and pieces of the story of the failure are coming in, we are finding there was a significant failure and attempted repair, then eviction of this engine.

A total cover up job that is resulting in way more work than we expected.

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