We received a tip e-mail from BangShift reader John Rasmussen that contained a series of photos that literally stopped us in our tracks. The photos, according to the text in the e-mail show a Caterpillar 793 mining dump truck with a very, and we mean, very, blown up motor. As the story goes, the truck was shifted from sixth gear to first gear and that is what caused the 4700ci, turbocharged, 2500hp, V16 engine to completely and utterly come apart as though it were stuff with a small nuclear device.
There are a couple variants of the 793 dump truck, but we can say that the truck, if loaded would have weighed about 850,000lbs when the “bad shift” was made. As you will see in the photos below, the crank looks like it was the “fusible link” in the whole equation and it broke into roughly half a million pieces. The giant connecting rods strewn about, along with the exterior carnage to stuff like the engine fan and what looks to be a bellhousing of some sort is truly amazing.
We do not know who shot the photos or who to credit with them but we do know that we are very glad that (a) we were not driving that truck when it happened (b) we did not have to call the boss and tell him about this (c) did not have to call Caterpillar and ask, “how much for a 78L crate motor”? (d) have to tell the EPA that however many gallons of oil just lubricated the Earth!
Scroll down to see photos of an engine that had a very, very bad day!
Thanks to John for the tip!