ESP expansion, transit year 90

Servus Community, with my ESP it really smells out now, at the adjustment wave above, so far it was only a little wet from time to time … I decided to seal the ESP myself at the adjustment wave, although the instruction by Uwe Reimann is very good ( for all who want to try it nevertheless, here the link: http://www.uwereimann.de/poel/esp-deckel.htm ). I would like to have my ESP completely resealed, in order to save some money, I would like to expand it myself. M a question: Is it enough to insert everything (as bein timing belt change, OT and NW, KW, ESP lock) during removal, or has something to be taken care of? What is it like afterwards when reinstalling, it is enough to bring the pump into the starting position, so as before in a fixed position? Or is everything different after the removal and the removal of the belt disc?