Quote:
Originally Posted by tyl604
This looks just like the new one that I put in my '81 300SD. Notice that the top outlet is clamped off. Then there is a single tube on the top and a single tube on the bottom. I forget exactly where they went but can look and take a picture if you need it. See picture below. By the way these things really work; I had the vac hoses mixed up at first and had zero power. Changed the hoses and have great power.

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The clamping of the top outlet is in error. This is the vent to atmosphere. When the solenoid is energized, the horizontal port to the ALDA is connected to the top vent. The hose should be removed and tossed.