Removing compressor in 1994 Taurus with 3.8L engine
I don't have many questions in this post (they're in bold), but I thought I'd relate my experience for other relative beginners in a similar situation, attached to this thread since it's listed in the EZ Topic Finder as "AC Compressor Removal" (though this thread is mostly about removing just the clutch--if there's a better main thread to post this, let me know).
I'm removing the AC compressor from my 94 Taurus 3.8L, because something failed in either the compressor, clutch, or pulley, which isn't allowing the pulley to rotate. This caused the belt to smoke and then snap. I haven't had AC since May 2008, when the R134 leaked on a hot day with the AC on maximum. I confirmed it was a leak by trying to do a simple recharge with a can (with pressure gauge built in) from Kragen, and watched the pressure drop back to zero in minutes. The pulley continued to rotate at that time. I don't know what the condition of the clutch was at that time, and I didn't bother fixing the leak, evacuating the system, etc., since I knew less about cars then than I do now, and couldn't afford to have it repaired by a mechanic.
I've read here and elsewhere that the compressor's pulley and clutch can be accessed and removed through the right front wheel well, after removing the wheel and the plastic splash guard, but not with my car--the pulley end of the compressor is too close to the body of the car to allow a pulley removal tool to be used. In some Taurus models/engines, is the compressor further back towards the wheel well than with the 3.8 engine? Or is it always necessary to drop the subframe to get to the pulley/clutch through the wheel well on all Taurus models/engines? If so, though that might be simpler for some people, I decided to remove the entire compressor etc. to get to the pulley/clutch, and get to it from the top, by removing the alternator and power steering fluid pump, which seemed simpler to me. I also wanted to get in some practice on removing these parts (never did before), and I don't feel up to trying out alternative ways to remove just the AC pulley/clutch from the top of the car, as some people can. And since there's no refrigerant left in the AC system to try to save, and it'll probably need a complete vacuum/flush/refill anyway, that's another reason it seems less necessary for me to leave the compressor in place and just try to remove only the pulley/clutch.
I haven't done a lot of work on cars (though I'm catching up), and never had to remove a compressor until now. I'm finding it tough to find illustrations and videos that are specific about how and where to disconnect the hoses attached to a compressor. I've searched YouTube and elsewhere, and haven't found decent videos on this, and none for the Taurus 3.8. Lacking any of this, I finally figured out the standard text instructions, which tell you to follow the two lines coming from/going to the compressor, to their spring lock couplings (small donuts circling the tubing) that attach them to the rest of the tubing, and to use a spring lock tool to disconnect at these points. My research found that many people find these particular spring locks, and the hoses they hold together, to be difficult to release, which is another reason I didn't want to do this. Also, those "normal" directions will leave you with much of the rubber and curved metal tubing, the AC manifold, etc. still attached to the compressor when you remove it. Unless I'm misinterpreting something, at least in my Taurus, removing the compressor along with some attached tubing looks like a real hassle, requiring you to move other tubes, etc. out of the way that the instructions don't mention (and the Chilton manual says you also need to remove the radiator and fan, which doesn't look necessary in my model, even though I read the section dealing specifically with the 3.8L). The Haynes manual says the reason you need to leave the tubing attached to the compressor, is that if you try the easy method and remove the manifold bolt that holds the tubing mount at the rear of the compressor, and leave the compressor tubing in the car, that the compressor won't clear past the manifold and tubing when you try to lift it up and out. But that's not the case in my car--all that section of the tubing, manifold, etc. goes to the side and under the compressor, out of the way of lifting. The power steering fluid tubing is more in the way, and I can work the compressor past those with no real difficulty.
Maybe the official directions, even when referring specifically to the 3.8L engine, don't match my Taurus because they refer to a different sub-model or engine type whose compressor lines are mounted differently?
In any case, I went with the easy method for my particular car's layout, and removed the manifold bolt on the rear of the compressor that holds the mount for where the tubes enter/exit the compressor, rotated the compressor so it was rear end up so it would clear the tubing and part of the engine, and pulled it out of the car. There was no pressure left in the system, so no sudden release of R134.
For the time being, due to cost, I'm probably not going to be trying to revive or replace the compressor (and the other AC parts like the accumulator), purging, recharging, etc. to get my AC back, until some time next year when it gets hot enough for AC. For now I just want to get the pulley to turn so I can drive the car again. My next step is to examine the pulley bearing, clutch, coil, compressor, etc. to figure out what needs to be done to get things unseized.
Bottom line, is that in my Taurus model, I found it easier to remove the compressor than some manuals, etc. seem to describe, or at least I figured out the way that seemed easiest for me:
• If your AC system still has refrigerant in it, you'll need to evacuate it first.
• Remove the belt, alternator, and power steering pump.
• Disconnect the two electrical connectors from the compressor (the bigger, cylindrical one has a small metal release latch towards the front, that you have to reach under to get to, and pull forward).
• Remove the bolt for the manifold mount on the rear of the compressor.
• Remove the compressor's four mounting bolts (though getting to the bottom two bolts isn't exactly easy).
• Rotate the compressor so its rear (manifold mount) end is up, then pull it up and out.
Any advice and criticism welcome.