I guess, you're all waterboxers... The air channels, coming from the front air inlet, are going through the door, where the first fresh/cold air vent is placed. Then the ductwork goes up to the overhead frame rails. In the Bus option of the T3 you got fresh air vents left and right at the overhead frame rails. At least this ductwork turns down to the engine compartment. There it is attached to the alternator fan which pushes the cold air through the heat exchangers at the exhaust system. The hot air goes through a paper duct below the van to the front. There is a small outlet in front of the middle rear seat. The paper duct goes up where the radiator is at the waterboxers. Why are this channels taped? I guess, it's just rust prevention for the upper frame rails. The fresh air is not needed in the engine compartment. Helmut '80 Camper |
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