Hi Everyone,

I'm doing a check on my '83 380SL vacuum lines and have a quickee question. The warm-up regulator has both bottom connections on with no issues. On the top of the unit there is what looks to be a vacuum fitting with a rubber elbow connector. There is nothing connected to it going anywhere and when I look at the vacuum wiring diagrams, I see the two bottom connections but nothing referencing the top. Is there supposed to be a line connected here and where would it go?

Thanks,
Ray

 

Well, I heard from George Murphy technical moderator at the Mercedes Club forum and he says it's just a vent and shouldn't be connected to anything so not to worry.