Suspension swap

I am running a cabover pete 320 custom ejection dump truck.

The suspension is a 46000 hendrickson haul maax. Axles are 46-170s. Gear ratios and strength are ideal. However the axles are in the wrong place for best load and bridge.

I want to convert to air ride. I have access to a complete, slightly used pete air trac suspension.

I need some insight and advice. If the axles will fit the suspension?

I know it will require redrilling the frame etc. That does not matter because we are moving the axle locations regardless.

Any advice would be appreciated.

 

Rather than attack you for your negative and uniformed comment, I will try to explain and educate you.

First lift axles raise automatically when trucks are placed in reverse.

This truck was built with a tag axle (behind the drives) to keep the turning radius short. Additionally, (in case your not familiar) the Hendrickson Haulmaax tilts the suspension front to back centerline between the drive axles. Each axle moves up and down at the centerline point.

To add to the dynamic loading, this body is a custom ejection dump body. There is nothing in the front 5 feet of the body but 2 horizontal hydraulic cylinders. Being a cabover also means the engine is 5 to 6 feet further to the rear so it is not as effective as a counterweight.

The rear tag lifts when backing. This puts the entire load behind the pivot of the drive axles.

During a recent job we were backing down a steep driveway and the steer axle literally came off the ground.

The essentials of the change is the drives will be moved to the rear and the rear tag axle will become a 3rd pusher. This will put the cg of the load over the drives and not behind the unsupported back of the chassis.

Since we are going through those changes we feel like why not put it on an air suspension to improve ride quality, wear and tear.

Not trying to BS anyone. Just looking for input from experts that may have value to add to the discussion

Have a nice day.

 

Here is a picture to help you understand the issue.

 

Correct it is a steerable axle which is why it lifts. I will check to see if a steer lock kit is available. Good tip.

 

Because it is steerable that is not an option.