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Old 07-21-2003, 06:26 AM   #15
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1978 28' Argosy 28
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One of the other weak points in the AC is the hoses and trie ends. It seems the system was a modular one with some sort of quick disconnects. I had to have mine replaced and the shop had to custom make the hoses and weld them to the old ends to allow for reattachment to the compressor and evap/condensor.

The AC unit is a hybrid of GM parts and what looks like an aftermarket unit. You may need to consult an AC guru to figure out where the wires go. It could be something as simple as a loose wire.

Brett G
WBCCI #5501 AIR # 49
1978 Argosy 28 foot Motorhome

Wise men talk because they have something to say; fools, because they have to say something. -- Plato

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Old 07-21-2003, 03:38 PM   #16
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huntsville , Alabama
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my last dash ac problem was a lose wire in the dash. i would venture if the coach has been sitting it is low on freon. the o rings dont fair to good not getting some lube on them and they dry out and the freon goes by by. i would go to auto zone a get a conversion kit and change the system over to 134 . after you do you vacuum test the system. my sys is on 134 and it is ok when it gets to hot i kick on the gen set and overhead air one ac at a time. i have had both over head acs and the dash air going at the same time. out in west texas last summer it was hot.. lol

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