Yes they can be taken appart and checked out. It's pretty back yard stuff. I took three sets appart, matched them up, added a #2 and 3 springs. Rides a little too stiff and I plan on removing the extra #3 spring to soften up the ride. The problem with mine was that the springs were mush and the truck would lean to one side. I found the the arches were different from left to right. Look in some of my previous posts and you can find the spring pics.
My wife fed my computer a cup of coffee and it choked along with the pics