You might want to check this website out. Its called 190E revolution mb190.tripod.com and in the tech section of the site, My friend Daniel Has featured timing chain tensioner/ Timing chain replacement for a 190E 2.3-16V. The process is exactly the same for 8V motors as well. You dont really need to remove the oil pan to replace these two items. The job can be done very easily in 2-3 hours if not less with a help of a friend. I am also changing my timing chain & tensioner MAYBE TOMORROW (some one smashed my car last night and drove off) Thank god everything is okay with the mechanical items. Good luck and let us all know what happens!