Their is a line running off the vacuum valve to a bolt. From the bolt their is another line that runs to something but I'm not sure what that is. It's the thing that has the shiny metal "hose" that fits to it. Anyway, it's the bolt I'm trying to figure out that I need. It's got two spots for lines and there is a rubber connector that fits the lines to the bolt. The rubber was all eaten up and when I tried puling them out, one of the little connections on the bolt just snapped off. I think it's one of these:
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&year=1984&make=MB&model=300-DT-001&category=All&part=Thermo+Vacuum+Valve&appEngines=_any
They have a part called blue and one called black. What's up with that? An how about the rubber connectors, I'll need those too. Is it these:
http://catalog.worldpac.com/mercedesshop/sophio/wizard.jsp?partner=mercedesshop&clientid=catalog.mercedesshop&baseurl=http://catalog.peachparts.com/&year=1984&make=MB&model=300-DT-001&category=D&part=Diesel+Inj.+Plug
I sort of doubt it but can't find anything that looks similar. Thanks for the help!