hello bomeliv and welcome to Topklasse.
Try this:
https://workshopmanuals.org/product/mercedes-wis-asra-epc-ewd-manual-1986-2015/?srsltid=AfmBOopMfzopoyn6yelzo2gQ-p3n93sph4i2TYo-RhQb5wzWW7Se3Udl
Not your average car and certainly not imported in Australia.
This E250 CDI is a UK import with factory 6 speed manual.
It's been auctioned at Grays in Victoria where I believe it will go for next to nothing.
My W140, while not a 600, is a marvel of engineering! Fitted with the smallest of the V8s my 400SEL feels like riding in a sound proof box.
Super quiet, extremely comfortable, you miss not ‘feeling’ the road and your environment.