I don't go near air-cooled vanagons very much, So you may not have this, but....... Starting in 'some year' there's a federal requirement on all vehicles that there's a clear diagram by the heater controls showing full defrost position. On all watercooled vanagons, starting with 82 diesel and up, there's a little picture-diagram, with a 'defrost icon' and it shows all levers to the full right, and fan on # 2 position. It makes sense that in an air-cooled vanagon they'd cut off heat to the rear to force air to the windshield. That's how old bugs worked - it came out at your feet, unless you closed those doors down there, making more go to the windshield - believe that's how they worked if I recall correctly. I read that long thing, and thought is was pretty right on for watercooled vanagons. Scott -----Original Message----- From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of Mike S Sent: Tuesday, April 08, 2008 2:50 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: ventilators in front doors At 05:23 PM 4/8/2008, Jack R. wrote... >GoWesty provided the most in-depth explanation I have seen so far. >Nothing like the "simple" German engineering of a Vanagon! But, they have it somewhat wrong. In describing the top lever, they say it's for defrost, and only talk about it controlling the defrost vents. At least on an '81, it's much more complex - it also controls the front/center foot vents and the rear cabin floor vent. I think the defrost vents are always on, but moving the lever toward the right progressively shuts off the heater vents, so more air is then delivered for defrost.
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