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  #1  
Old 11-02-2001, 06:23 PM
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What color is an evaporator?

Yeah, I know it sounds like a stupid question. But here's the rub. I recently spent a bunch of time fixing the a/c system in my '87 124. Said time involved numerous practice sessions installing and removing the expansion valve. In the process I noticed that my evaporator appears to be made of copper. Both tube ends jutting out the firewall are brownish, with perhaps a bit of greenish discoloration here and there.

I thought the 124 came with a rotten aluminum evaporator. If so, wouldn't it be silverish in color? Does the brown color imply my car has already undergone an evaporator-ectomy?

Inquiring minds want to know.

- Jim
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  #2  
Old 11-02-2001, 06:28 PM
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My guess would be

that the tubes you are seeing are copper. The evap should be silver in color.
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Old 11-02-2001, 09:17 PM
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This is one of the reasons for the number of failures. Copper tubes on an aluminum core.
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  #4  
Old 11-03-2001, 10:42 AM
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Oh great, so galvanic corrosion is a problem too. Just peachy.

- Jim
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