PeachParts Mercedes-Benz Forum - View Single Post - rear levelling system "bottom out"

lrg · #3 06-06-2003, 09:48 PM

My wagon thunks a bit over speed bumps too, even after replacing the spheres. The spheres have a nitrogen charged bladder and space for the fluid inside. When the bladder ruptures the whole sphere fills with fluid and you loose some of the shock absorbing. Bad spheres ought not to affect the up and down movement any, that should work even with bad spheres. I think leathermang is right though, the spheres are more than just for shock absorbing but I'm not sure what else. They are not horribly expensive and pretty easy (although a bit messy) to replace. As they seem to be the rear suspension item that fails most often you may want to just replace them. It should help but I wouldn't expect it to make your thunk completely go away.