So a quick peek under the rear shows us a rear beam type suspension with no rear sway bar(Explains the amazing amount of body roll). When I was messing with the rear beam to get the springs out, I can tell there is a little flex in the beam which tells me the rear suspension could've used a rear sway bar. Good news about this type of suspension is that it will be pretty easy and quick. This took me about an hour to get both sides done.
- Metric sockets
- Spring Compressor
- Jack and Jack Stands
- Impact Gun (optional, but helpful)
- Torque Wrench
Step 1: Jack up van. Support it on jack stands. And remove rear wheels.
Step 2: Remove bolts holding the ABS sensor and/or brake pad sensor. I circled the one that is visible in the picture below. There is a second bolt that you want to remove behind the disc brake. Just follow the line to the other bracket holding the cable in place. Disconnecting the brackets on both sides will allow you to drop the suspension to release the springs.
Step 3: Place jack under the axle and jack it up a little. The rear suspension is held up by the rear shock. So you want to use the jack to hold up the suspension when you unbolt the rear shock.
Step 4: Compress spring. I'm not 100% sure that you really need a spring compressor for the rear. It seems that you can lower the rear suspension enough to release all the energy before removal. Better safe than sorry, and I think it helped to remove the spring from the mounts.
Step 5: Unbolt the lower bolt of the rear shock.
Step 6: Slower lower jack, then jack up the other side.
Step 7: Unbolt the lower bolt on the other shock. I only had 1 spring compressor so you should be extra careful with the other side.
Step 8: VERY SLOWLY, lower the shock on the other side.
Step 9: Go back to the first side and push down on the axle enough to let you pull out the spring.
Step 10: Go back to second side and push down on axle to pull the spring. If you are having trouble getting the spring out, then compress it with the spring compressor.
Springs are out. Now just reverse the process. Make sure you position the springs in the same orientation as the original. I turned the spring just a bit so that it can sit a little deeper in the perch to get a little more lowering.
I torqued the lower rear shock bolt to 50 ft/lb. Lug bolts are 75 ft/lbs. The brackets are probably about 20 ft/lb. If you break it down, you only have to remove 3 bolts (except lug nuts) on each side to remove the spring. Really only 1 bolt on each side that keeps the springs on. Let's take a break, and think about the front suspension next...