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evaporator on 740 700 1991

posted by  someone claiming to be john curren on  Thu Apr 10 15:35 CST 2003 [RELATED]


I am planning to install a new evaporator in my friends 1991 740 wagon.
It appears to require a lot of dismantleing and I recall that on some cars
we used to simply cut the plastic case and reseal it with a stiff mastic.
This saved a lot of labor and I ask if that is practical on this car.
Also, I'ld appreciate any other helpful advice.
Yes, I have done a lot of a/c work.








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evaporator on 740 700 1991

posted by  someone claiming to be Mike Gambone on  Fri Apr 11 15:15 CST 2003 [RELATED]

I may need to do this on my 940, and having just gone through a condenser fiasco, I have only several words for you to contemplate. Buy an OEM evaporator, this work is too much hassle to mess around with questionable aftermarket stuff. Just my 2 cents, good luck.








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evaporator on 740 700 1991

posted by  Steve on  Thu Apr 10 17:13 CST 2003
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last visit: Fri Oct 24 07:16 CST 2014
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It is possible, but it is probably easier to just remove the fifteen or so screws and pull the plenum lower cover off. The evap comes right out if you do this: the only grief is reaching the screws which in some cases are hidden and tough to find. The case is sealed with mastic.








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evaporator on 740 700 1991

posted by  alchemist on  Fri Apr 11 16:34 CST 2003
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last visit: Sat Jun 18 18:01 CST 2011
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what is mastic?








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evaporator on 740 700 1991

posted by  topjohn on  Tue Apr 15 02:31 CST 2003
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last visit: Thu Jul 12 13:18 CST 2001
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Mastic is a sealant for the joints and separations to disallow loss of the
cold air thru leakage. In this case it is black. It is flexible and gummy.







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