This HD clattered through the door broadcasting a superfluous, rhythmic engine beat.
Tear down went on as a stop motion feature.
Front cylinder top end – clear.
Front cylinder bore and piston – showing signs of metal transfer.
Rear cylinder top end – clear.
Rear cylinder bore and piston – analogous to the front set.
The cause? Elliptical roller supporting the lifter on the left. Visible in the pistons are the silver streaks of ruin.