Air bags
:usa
Has anyone ever converted a Road Tractor with air ride into a box dump??
I have lots of experience on this subject. I have converted two of my road tractors "with air ride" to dump trucks. I had a dump body, with a sub frame, so I didnt have to worry about it being a double frame. Both trucks were a extra thick, or wide frame. This is very important, make sure that you have a double frame, or at least a sub frame. If you dont have either or, you are taking a gamble.
If you have a wet line already, and the dump is a subframe and the chassis is the correct length, you can change it in a long day, if you have all your stuff ready.
Now to the drama, I have heard all the stories, about if you dont dump the air bags and if you are not on level ground, you might be in for a surprise, so I had a heads up on the problems. I instructed the drivers about dumping the air bags and being on fairly level ground. I used these trucks for the last two years, without any problems. They do ride better than the walking beam, but they will scare you the first time you are loaded and going down a country rode and when you go around a curve, they will lean on you. I dont recall any major problems, with the air ride, it depends on the driver. Most of the air ride trucks have a lighter running gear and that may give problems and if you are working off road, you probrably wont have a LoLo in a road tractor. One of the things that didnt work for me was a Cat 3406B engine and light rears, I replaced 4 rears in this truck in two years. The drivers would get stuck and pop the clutch and either get a rear pumpkin, or drive shaft. Yes I know thats the driver mostly, but a regular dump is set up stronger.
I just sold them bought and bought quad axle trucks, seems to be more work for them at the time.
As for me, I had two road tractors and I needed two dump trucks, so it was cheaper for me to convert them, I was on a budget, so it worked for me, but I had rather had a different suspension, it would have been less worries.
Final thought, if thats what you need to do, go for it, but watch the warnings and GOOD LUCK