I have terminated of dismounting the lcs...
I think one on my cpu is dead because I see a few little squares ( capacitors?) free and corrosion.
The other cpu seem more or less clean.
All the liquid leaks from the o-rings.

Now I have doubts. Can the powermac works with only one cpu attached?
It´s better to buy a 2.0 GHz air cooled version or repair this one?

Sad day to my beautiful machine! Damn Apple! :/