Old Mack doggg

When you say tri-axle do you mean one steer axle, one lift axle and two drive axles? Or do you mean one steer axle and two drives axles? Because if it’s the latter, it is spec’d pretty light for a dump truck.

If you’re going to be using the truck daily and your budget allows, my advice would be to find a factory built heavy-spec dump truck (46K rears, 3.90 or 4.10 gearing, lift axle, etc).

There is no way I’d put 23 tons in the truck you mentioned in your post.

 

You will be fine with those axles, it is spec'd exactly the same as a couple of the old tandem Mac's that we used at one of my old jobs, it was more than likely a road tractor at one point turned into a dump truck, my old job is still running those trucks today, one is a tri now one is still a tandem, both of them pull ups also which means they are pulling up to 80,000. In MN you are only allowed 50,000 as a tandem 56,000 as a tri, but both had aluminum boxes on hem and regularly loaded over 17 tons in the box alone

 

Indiana requires a 20k front axle on dump trucks. Not sure what his empty weight is on that thing, but I would guarantee he isn’t legal if he has 28 ton in the box!

 

Those are rear ends meant for box haulers who never leave the pavement.

Will they work? Yes, for a while.

Are they the best option? No.