Help a trucker drive a dump truck, lol. 4 on top 4 on the bottom?

That makes a bad day at the office

 

Out west we call them tag or drop axles. They follow behind the axle in front of them. You can not back because they'll twist and break. A true steel axle is like you'll see on a crane. The Rebel Oil Company in Las Vegas has just one truck and trailer that has a steer axle and it's mounted right behind the real steels. When you turn the wheel in the cab those tires will turn. On our drops you could turn all day and the tires will not move until the trucks does. The whole purpose on these axles is to take weigh away from the steers. It looks like yours are moved back some from what ours are. I know you'll only forget to raise the axle after unloading when raining because you'll go to turn and won't! I forget how much more we can load with those axles but out west in some states they are worth gold. We sell our power units at 5 years and towed units at 10. We had a 1991 KW100 daycab that sold in 1996 for $55,000. I would have loved to seen what that truck cost the company. There are spec'd for us but's I believe that's prettry good return on your investment.

 

Howdy driver

There are drop/tag axles and there are tandem steer axles. The tandem steers do not lift and can be backed up like any regular axle. Drop/tag axles are just that. Some trucks have an auto raise feature when the trans is put into the reverse position. Depending on the config. a drop/tag will take 10-12k. Steer axles say 2/20k rated axles will sometime be a little less because of the distance between them/bridge law. Like most extra switches you will only forget to do it once or twice. Otherwise you prolly should not be driving that kind of truck.