VW GOL BOOK CREMALLERA OIL ADDRESS

Hello everyone.
I have a VW goal (G3) and it is throwing direction oil by the coupling of the zipper towards the steering wheel axis. I need to change the seal that goes in this part.
I already have a disassembled address box.
Apparently it is a common failure in these vehicles.
Does anyone know how to do it?
Or does anyone have a workshop manual where this particular part comes out?