Ok Paul,here it is i dont know if you are still with us on this turning from timing chain to transmission.But if you go here and under gas engines you can find some interesting stuff what all of these gurus are trying to push aside and dont even believe in.What was on comment having heard from some head mechanic or person from benz saying that your chain last for ever.So he says it and everybody believes it. http://www.mbca.org/pages/tech/MBCA_parts_wear_out.htm
I have seen it personaly on a benz owners manual that he timing chain need to be repaced.So maybe some of the guys in here will think different next time.Oh by the way i am still trying to fing the manual ,or from a reliable source from the web to satisfy everyone here,but it might be hard cause i think we have a lot of none believers here .OH YA GO TO GASOLINE ENGINE
4TH down in dark.Hope the site works