From what I know the blower brushes are worn down. Easy fix just do a search for "replacing blower brushes on 85 Mercedes 300D ZaneRen
behind the golvebox
The switches are on the door, by the handle.
Yes, a Mercedes 300D has a fuel tank.
It's on the right side of the engine, right at the junction of the engine and transmission.
Because the relay is bad.. Or your wiring.
what is the queston about it?
The glow plugs are screwed into the side of the engine, directly underneath the fuel injectors.
yes
You can find this on the below link http://www.autosparepartsusa.com/searchparts.aspx?make=63&made=300D&year=1983
3300 lbs.
how to replace front disc pads on 1983 300d Mercedes Benz