Spring Suspension Tandem Dump Truck Ride

I have a tandem axle Kenworth W900 dump truck with a Hendricks springs suspension. The ride of this truck is so bad that I don't want to drive it anymore. I've done it for 3 years and it so bouncy that I have neck issues. It has a Hendricks spring on beam and its a long truck.

I have new shocks and a decent air ride seat. I've eliminated the possibility of adding air ride to the cab. The cab mounts won't allow for it.

I've looked at new trucks but I'll be spending big $$ for anything. And besides the bad ride I have a good truck with a B model cat. It has a double frame too.

Looking for alternate ideas before I give up on this truck.

1) Considering adding an air ride drop axle. I haul a lot of weighed loads so this could help if I could carry more. But would a drop axle help bounce? I have room for it on my truck. I guess I would run with it down a lot because it rides worse when its empty. Everyone says they hate their drop axle.

2) Donvel sells a kit to add air ride to the steer axle thats supossed to help ride. But would this be okay on a dump truck?

Any other ideas to help my ride? Maybe a neck brace and pain killers? LOL

 

I have an 86 W900. My front cab mounts are set to not allow the cab to pivot and add air ride.

I believe I have the standard spring. I had it rebushed about a year ago. Its all in good shape. I do need new steer axle springs and king pins. But kind of debating if I should put more money in this truck. Its okay on smooth roads but most of our roads here in Colorado are terrible. Not to mention washboard dirt roads.

You know the pain of a new unknown truck. But I don't think I can do another year in this truck. I should have put on air ride instead of rebushing the rear end.

 

That kit looks pretty cool. I wish I had done this instead of rebush my spring rear. But it maybe still an option. Price is the issue. These trucks can be so expensive as it is (tires, brakes, Insurance). Much less paying for upgrades.

 

Good tip on freightliner. I have lockers and almost positive I have 46K rears. My tandem is super heavy.