B325YUD;1218073[B said:allabasi[/B], you've lost me on the orthopedic seats bit?
Haynes Manuals seem to cover everything BUT a W123 230: there appears to be one for '76-'85 W123 diesels, one for '76-'83 250 & 280 W123s (I hadn't seen this one before), one for '77-'81 USA 280 W123-models, and then it goes to '85-'93 W123 petrol and diesels. Engine apart, I guess the second one would be the most useful, although the diesel one mentions estates?
Orthopaedic seats have inflatable bladders in the backrest , and can be recognised by the little control box next to the seat belt buckles - I don't see this in your pictures - here's one from a 190
As for the Haynes manual , it has been a while since I has a W123 ( had all three variants of the 280 ( E/CE/TE ) as well as a 200 saloon so it was probably the 250/280 manual I had . I think I gave the manual away when I sold the CE to a friend .
The manual for the W201 ( 190 series ) or the W124 does cover your engine since it appeared in both those models .
I haven't had time to scan pics of my 280TE yet , but just came across these in my photobucket album whilst looking for the seat thingy