Changing out 93 Aerostar Compressor, Need Help!
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Changing out 93 Aerostar Compressor, Need Help!
My clutch just went dead on the compressor of my 93 Aerostar (dual ac). I'm thinking about going ahead with the 134A retro because of the cost and availability of R12. I've searched around this forum and found a lot of good info. My knowledge is kind of shade tree at best but I have changed compressors and done retrofits on other vehicles with no problem.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
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I'm planning on buying the new Compressor, accumulator, o-rings, orifice valve, flushing and evacuating the system. Along with this I'm going to seal the gap around the condenser as I have read here. <o></o>
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My biggest question at the moment is where is the darn orifice valve located? Kind of hard to change if you don't know where it is and I'm tackling this without a book in hand as usual, lol.<o></o>
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I'm pretty sure I don't have a black death situation as it was cooling great and the clutch just stopped working. It still has a full change that I will have to have the shop evacuate for me though.<o></o>
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Any help would be great,<o></o>
David
fficeffice" /><o></o><o
></o>I'm planning on buying the new Compressor, accumulator, o-rings, orifice valve, flushing and evacuating the system. Along with this I'm going to seal the gap around the condenser as I have read here. <o
></o><o
></o>My biggest question at the moment is where is the darn orifice valve located? Kind of hard to change if you don't know where it is and I'm tackling this without a book in hand as usual, lol.<o
></o><o
></o>I'm pretty sure I don't have a black death situation as it was cooling great and the clutch just stopped working. It still has a full change that I will have to have the shop evacuate for me though.<o
></o><o
></o>Any help would be great,<o
></o>David
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From: Southern California
The orifice tube sits in the inlet of the evaporator. Just use a small pair of needle-nose pliers to pulll it out. By the way, can't you change the clutch alone without taking everything apart? On the 3.0L there may be a problem since the compressor is hidden way down there on the passenger side. However, the 4.0L has the compressor on top, and that should give you plenty of room to pull the clutch out by itself without having to discharge the system.
Good luck
Good luck
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Just addding to copper90680's advice, the orifice tube on the rear unit is really deceptive to find. On the rear unit you will find a very large connection nut and to the left of that is black foam insulation on tubing. You unscrew the connection nut and the o-tube is on the left hand side, within the tubing hidden by the black foam. Changing out all the o-rings is a chore, but well worth it. I did the same retrofil you are planning and have been delighted with the results - nice and cold and no problems going on four years now. One additional item I would recommend changing would be the fan clutch. The original system uses 60oz R-12. I found by trial and error that around 56oz of r134a (4.5 cans) was the optimal amount. The 80% figure thrown about is too low for this system.
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Thanks for the replies guys. I'm going to order the parts this weekend coming and give it a shot when they get here. The only difference is I'm thinking about going with Freeze12 after all I've been reading about it.
Thanks again,
David
Thanks again,
David
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gr8dane96
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Mar 25, 2005 01:23 AM
