Part of rebuilding the suspension for the Jeep Wagoneer was adding air springs above the rear leaf springs to prevent it from sagging when loaded. Wagoneers suffer from “wag sag” when the leaf springs wear in and I wanted to prevent that and help keep the wagoneer level when loaded with fire wood or whatever I was hauling.
I choose the following AIR LIFT kits that seemed to work out ok for me.
The AIR LIFT 59507 is the kit with all the brackets and air bags. AIR LIFT 25980EZ is a air compressor with controller that allows you to adjust how much pressure is in the air bags.
This is the typical install setup for the air bags. This didn’t work out for me though. The Lower Bracket is supposed to rest over the leaf spring retainer plate and bolt down with a u-bolt but I didn’t have clearance for the added u-bolt and the retainer plate was not shaped in a way that allowed the lower bracket to “hook” on to it.
First thing I did was modify the lower bracket by modifying it to be mounted under the retainer plate. Cut off the tab that is supposed to slip over the retainer plate.
Then welded on a new tab with a hole drilled in it. This hole locates on the leaf spring pack bolt. Spray with some paint to keep the rust away. Bolt up the u-bolts and lower bracket for the air ride so we can mock up the upper bracket. The kit comes with a plastic rod with threads on it so you can set the height of the upper bracket. It has some adjustment and I set it close to the longest it could be since the wagoneer has lots of up travel in the rear suspension. Make sure the suspension leafs are compressed and at ride height when you are doing this. The upper bracket also needs to be parallel with the lower bracket.
I decided to weld the brackets in when one of the bolt holes overlapped a hole in the frame. Wire brushed the paint off the upper bracket and the frame. Used a angle finder to make sure the upper bracket was parallel with the lower bracket and tacked and welded in the bracket. My upper bracket ended up being 7.5 degrees tilted downwards towards the front of the vehicle.
Coat it in paint and install the bag. Here you can see how the lower bracket wouldn’t mount onto the spring retainer plate in the normal way.
Then I mounted the AIR LIFT 25980EZ to the passenger side of the frame, about half way between the front and rear wheels.
Both air bags are plumbed up with a T to the output of the air controller on it. I put the inlet filter under the hood to keep it out of water.
I have been running this for over 4 years now and I really like how it turned out. I am planning on adding a T fitting and air line hookup so I can fill/refill tires with the system. Maybe this coming up spring?