Been having a bit of noise on the work vehicle, finally decided to investigate. I’ll be damned i’ve never seen this happen before. The rubber on the harmonic balancer separated from the pulley!
The bad one next to what one is supposed to look like. Unfortunately we can’t use the intact one because the seal surface is gouged, so we are waiting on parts.
Had to make a tool to hold the engine still. Tq spec calls for 250ft/lbs then an additional 90 degrees. Had to make it beefy.
And I lucked out, it didn’t eat too bad into the pan or block. No leaks from the fresh wear.