Engine Size: 3.3
Refrigerant Type: R134a
I'm looking for a little guidance on replacing the compressor and looking for a leak.
My A/C has actually been working fine and blowing cold air, but the compressor clutch plate broke and was making a racket as it was dragging on the pulley when not engaged(one of the three springs broke). This happened a few years ago and I pulled the clutch plate/pulley and replaced it, but this time I can't remove it with the special clutch tool as it feels like it's welded on.
I'm wondering now if I might have actually had a leak all this time, as the low side line seems to have some dirt and yellow stuff around the crimped fitting. It seems that I now need to buy a new compressor with clutch and possibly one or more of the lines. I've read that the Xterra high side line has a habit of going bad as well. So I'm wondering if I buy a new compressor, drier and low side line, should I also bit the bullet and get the high side as well. The car is 10 years old with 160,000 miles.
Also, if I replace the compressor, two lines, and drier, how much oil should I be adding back to the system before I pull a vacuum and recharge?
Edited: Tue May 08, 2012 at 5:36 PM by NickB
To be safe replace the lines. But it's a judgement call for the person working on the vehicle. As for how much oil. It's always a guess when you just swap parts out. Some say drain the compressor and drier. Add back that amount plus an extra ounce. I'm a proponent of flushing the system out correctly using Hecat's products and procedures. Then add back the OEM spec for the vehicle.
You might be able to just get that low side line repaired, for less $$$$. I got my B2200 high side line fixed for $50 in town (a new hose barb was welded on, and then the hose cut 1 inch and re-crimped; 9 years later still OK). AMA does such repairs too, I believe.
I think I'd wait and only replace the high side line when/if it leaks.
That for the help. I took some pics of the lines, do the oily areas around the crimp connections indicate a leak?
I think the first one is the low side, second is the high, and not sure about the third.
Edited: Thu May 10, 2012 at 1:18 PM by NickB
Oily areas around crimp fittings do typically indicate a leak, did on mine.
A co-worker had a 1995 Caravan, and the hidden line for the rear which had three metal sections connected by two flexible hoses. And 3 of the 4 crimps were leaking.
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