Downshift from 6th to 1st in a fully loaded haul truck and this is what happens… This Cat didn’t have nine lives! This is what happens when a computer glitch dropped the transmission from sixth gear back to first whilst doing 60 km/h with a full load of 230 tons. Below is what remains of a Caterpillar C175-16 – the 85L capacity V16 engine from Caterpillar’s second biggest dump truck, the 793, which has a gross power output of 1976 kW (2650 hp). Flat out it revs at around 2500 rpm. As big as they are, engines of this size dont like to over-rev at all; 100-200 rpm over will start to do damage. There was no compression lock up, just BANG! A new engine costs around $250k. Once you account for labor/shipping/opportunity costs/other affected components (transmission, drive shaft, etc) you’re looking at probably 3-4 times that by the time it was fixed.
Posted on: Mon, 19 May 2014 14:14:39 +0000
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