Dose anyone have a diagram for the six short vacuum hose that connect the two vacuum valves on top the valve cover on my 81 SD. I have new valves but the hoses were so old they fell off the valves when I removed them.

As my egr is blocked can I unplug the top valve that opperates it? It had a line connecting it to the bottom valve that goes to the vacuum valve on top the IP that controls the modulator. I am replaceing all three.


THe plastic shut off valve was a dealer part from Fast Lane $155.00 ouch! but Phil got it for me for less than any other source...........

William Rogers......