if you have the WDH set up properly, the truck should sit level without the airbags. The purpose of the WDH is to transfer some of the tongue weight to the front axle of the tow vehicle and a small amount to the trailer axle. Hell, if you set up the WDH to an extreme, you can almost lift the rear wheels of the truck off the ground.

 

We put on the hitch so that the ball was at about the same height as trailer coupler when the trailer was level. We backed up the truck and put the trailer onto the truck. The truck kept going down and down and down as the trailer jack was retracted. Could not put the chains high enough to lift the trailer to the level position. We raised the ball position and repeated the process. We were able to use the trunnions on the last safe link to lift the truck. The trailer is still not level - the nose is down a bit. We did not dare to raise the ball position again because that would mean that the trailer jack would have to be extended to a height that just did not seem safe. Are we doing something wrong?
Also, the WDH instructions say to only inflate the air suspension system to it's minimum when setting up the WDH. Does that mean that once the WDH is installed and set up, the air suspension can be increased? That does not seem correct. Won't that push the back of the truck up?
This whole problem is driving us crazy. When we had the 3500 dually the back of the truck did not even go down when the trailer was hitche, and we had to buy a 6" drop down hitch to make the trailer level!

 

You have your ball set too low on the truck. You don't set it so that it is level with no weight on it, you set it so that it is level at loaded weight. Try raising it at least 2 "

 

To answer your question, yes air bags will help. They will help to level the truck and eliminate any porpoising you may encounter while towing.

We actually offer the 1000 and 5000 series for your application. https://www.airliftcompany.com/vehic...m-1500/2014/#l

Let me know if you have any questions!

 

You are going the wrong way with the ball. If you lower the ball, then by definition, the truck goes up. I was going through the same thing and it finally dawned on me that I was going the wrong way with the ball. Believe me, try it and you will see. By putting the ball higher, you are making the trunions work harder than they need.

 

Just get the Airlift, inflate and watch the problem go away, also you will get better handling when towing as the back of the truck will not bounce around so much. The Airlift system I bought was amazing, easy to install and love the fact that I can lift or lower my truck within seconds.

 

I have already ordered the AIRLIFT 1000 but it won't be installed until tomorrow. Let me see if I have this right - you are saying that if the truck is going down a lot I should lower the ball. That seems counterintuitive. We can certainly try it.
The Husky WDH instructions say to minimally inflate the Airlift when setting up the trunnions. If you then level the trailer with the WDH and then inflate the Airlift more won't this change the levelling???

 

Just out of curiosity, how did you kill a 2008 3500? That's not an easy task, considering almost 80% of Ram HD trucks built since 1993 are still on the road. Most of the guys I know who really work their late 3rd Gen HDs consider them just now broken in, LOL...

 

Yes it seems counter intuitive but that's the way it worked for me. I was having the same issues as you. I kept cranking the jack to the max and set the trunions to the max that I could manage but when I lowered the jack, the truck *** was sitting lower than I wanted and the front higher than I wanted. I got to thinking and I figured out that If I lowered the ball a couple of inches and then crank the trailer jack to the max, that I would be able to get the trucks *** up higher when I set the trunions (basically, the ball was at the same spot as before but the truck bead was up higher by about 2 inches and the suspension was also extended about 2 inches). It worked and now the back and front of the truck are level and the trailer is level. Another benefit was driving was more secure as the front wheels had more of the load and the steering was steadier. Just try it and report back.

My motivation was that before I got the WDH set up properly, I used the air bags but they were bouncy and I didn't like the feel. On one extended vacation, I got a leak on one of the bags and it was a real PIA for the rest of the trip. Now I don't put any air in the bags.

 

Installed an Airlift 1000 yesterday on my new 2015 EcoDiesel just like I had on my 2009 Hemi. It solves the problem.