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

So every turn you're lifting your drop axle? What about NV where they would only allow the switch to lift the axle to be mounted on the outside of the cab? What I think you're talking about is a drop axle between the steers and the drives. It's not steerable but it does follow behind the steers. So whenever your turn the drop axle would follow and you'd have no tire wear. That's why you'll hear air being applyed when the driver goes into reverse. You must lift the axle when going in reverse because you break parts for sure if you don't. I'm not 100% sure but I do believe there's regulations in some states that mandate an automatic switch to raise the drop axle when shifting into reverse. Just thought I'd clear that up but I'm sure there's places that have axles just like you're saying because we all know no two trucks are alike. What the OP stated might be a 4 and 4 or old twin stick tranny. But like always I could be wrong.

 

I run a dump like others have said center of gravity is a little higher 8ll is a decent trans the deep reduction is for crawling around off road never used it in road unless it was a super steep hill that you had to start in most truck would be speced 400 hp 8 ll and 4.30:1 ir 4.11:1 rears

Mine us speced with a 550 isx 18 speed and 3.73:1 rears we run asphalt tails hear so no pans easier to clean better for paving and shouldering steers me axles one other thing to know is what your state allows for individual axle weights and the bridge formula they use to keep yourself legal also get used to using the cb they are essential for most pits and crews

 

That's a great looking dump truck...... Nice specs too . Hopefully there will be some work this season . LOL

 

I don't have trouble with work in fact I work year round thanks for the compliment

But let me tell you now that winter is winding down I'm looking forward to mud season being over so I can get back to paving

 

What's your GVW about 72,000?

 

73000 is what wi allows


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Yes that is what I was referring too. While not truly steerable everyone I have know that have run tri-axle dumps including myself just call them steerable. I drove mostly in PA and my truck was a non-steerable so I had to lift it in most turn, otherwise it would push you through the turn. Pennsylvania allowed the controls to adjust the air to the bags and the lift switch to be in the cab. In NY though anything 2004 or newer has to have a "steerable" lift axle with the regulator for the air bags mounted outside the cab. The lift switch is still in the cab.

 

That is how we are setup regulators outside switches inside I mount my regulator under the hood less freezing problems there


Sent from my iPhone while day dreaming of deep snow

 

back in the day I drove a 4x4 airshift spicer in a gmc 9500 and a swingfender dodge both had massive 671 DD...those were the days..4x4 's were a sweet tranny..havent seen one for many years

 

I drove this back in 2006 and if you didnt lift the axle in all turns you were barely turning. There are different types of tag axles, though, so it depends. The main thing about dumps is getting used to the weight, you aren't pulling 25 tons anymore, it is all sitting right on your ###. Anticipate red lights and get really good at downshifting because there is no slamming on the brakes in a dump. The brakes get hot fast so if you don't anticipate your stops you will be running a lot of lights or running off the road. Depending on suspension, they also lean real heavy in turns so take it slow. Don't worry too much about dumping at first, learn the road manners and just worry about level ground to dump.

You will see a variety of tranny's but, 8LL are probably the most popular. I've seen many OTR guys quit after one day, it isn't rocket science but you do need to be willing to learn. The KW in the pic was 30,500 empty and usually 89,900 out of the quarry, sometimes 100,000 with denser rock, every state is different. Good luck.