Interesting truck. Here's our Mack configured in a similar way. It regularly hauls a 100-ton capacity Talbert lowboy (200-ton with the dolly under the kingpin). Also the 85tonne-metre knuckleboom is a really handy lifting tool.
Boomguy. What sort of degrees of articulation can you get between the rear drive axles when you go off road..? That's what kills us with our Mack, you have to really carefully what you do with it otherwise it tears out the driveshaft between the diffs of the 2nd & 3rd drive axles. At the moment I'm thinking of ripping the 3 existing drive axles out of it and replacing them with 2 x 120,000 pound planetary-drive axles. The kicker is that when we had it built we were offered a really heavy-duty tandem rear axle setup, but it would mean a 3-month delay on the delivery date that we didn't want, so we went for 3 axles instead. Knowing what we know now we could have waited - hindsight is 20/20 vision as always.
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