Regarding Coil Spring Assembly on 1992 Audi 100

Can the coil springs be put in upside down??

Asked by for the 1992 Audi 100
On some vehicle this is not an issue, on some it is. On the ones where the spring only goes in one way, it would be difficult to put it in upside down, but that doesn't mean it's impossible.
Why do you ask this question? Were they just replaced?
On a 1992 Audi 100, it appears that the spring does not hit the spring seat stop like it is supposed to. Would like to see a diagram of the coil spring assembly.