Tri-Axle Dumps

If you're talking about a straight truck tri axle, remember to raise the tag axle when turning and don't forget to put it back down. That only applies to the times that you're loaded. Never leave the axle down while you're empty. Also, be sure to take corners and turns slow. Those things are awfully top heave and short wheel based. Not a good combination for speeding around corners.

 

you might not have to lift the tag axle in turns if you have a steerable lift axle, but always lift it before going in reverse. watch out for soft and/or uneven ground, good to be familiar with your inter axle differential and axle lock. triaxles are the nuts man, especially the newer ones that are properly specced out.

 

Also there is no excuse for getting stuck with an end dump.
If you find yourself in that situation, lock the tractor brakes, unlock the trailer (Just the opposite of when you dump), raise the trailer up a ways (safely). Then lock the trailer brakes and unlock the tractor brakes (let the trailer down) and you can "inch worm" the rig out of mud, sand, or a hole.

Always, always before you dump, even if you have air-gates and auto tarps, get out and walk around to check to make sure you are dumping on solid, stable ground.

It doesn't take much to go off-center to lose a trailer.

If possible, dump with the wind at your tail and try not to dump in cross-wind conditions.

 

The inch worm thing only works for frameless trailers. And you're right, it works well!!! Never had to use it myself, but, I have seen it done. Also, make sure you are on level ground. And if you have air suspension be sure to dump the air before you raise the bucket. Good luck to ya!