Anyone have a vacuum diagram for a 1984 300d?

I'm trying to figure out why my fuel shutoff valve is not acting right.

 

i have a awesome running 78 300d and have searched for a diagram or color coding for it. the videos on you tube by ken bergsma are good. i need a color chart though lol. there is a clear vacuum line with a blue stripe that is not connected to anything on both sides just off to the side on mine need to know where it goes. mine has some issues when it comes to the vacuum system like door locks, keeps running gotta pop hood everytime to shut off, heat is inconsistent, and wont go into fourth. Other than that it starts everytime, runs great, is in good shape, this being my first diesel i really want to get to know how to fix this bc it will be an awesome car, i have had many volvo 240s and it really reminds me of a nice version of them.

 

and also i have ur diagram just cant find mine the link is www.dieselbenz.info/images/7/7a/1985_617_VacuumDiagram_FED_CalElimi.jpg