This is why you dont shift from 6th to 1st

Mook

Mr. Manager
Staff member
Admin
May 23, 2007
207,112
118,725
Elgin
Real Name
Mike
w3JLhaz.jpg


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 don't 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.

29wNjPi.jpg


mMxO0sE.jpg


54g6H0L.jpg


8z5EsVD.jpg


afSRwrp.jpg


bdbBeV2.jpg


K0yzHHL.jpg


gShAlHj.jpg


ZjLSu9Q.jpg


AsYrRYE.jpg
 
Old Thread: Hello . There have been no replies in this thread for 90 days.
Content in this thread may no longer be relevant. Consider starting a new thread to get fresh replies.

Thread Info