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I am going to replace my R134 compressor with one I picked up
at a salvage yard. My clutch is not engaging, so I thought it
would be easier to replace the whole compressor.
When I remove the hoses on the one in my 240 do I have to
collect any liquid and dispose of correctly? Should I take the
car to a shop to have the system cleaned and filled or just filled?
Please provide any tips.
Thanks,
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hello
your clutch is not engaging?
maybe you have low freon?
maybe you just need a charge?
i hope your replacement compressor from the 14 year old volvo is/was a recent replacement.
good luck
mike
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I just did this very job three weeks ago with success. No matter what you do, make sure you install a new drier. I considered not doing it, but was urged to reconsider by many friends who felt otherwise. As for liquids, when you remove the compressor (it helps to have a second pair of hands), you will most likely have some oil leak out of the top of the compressor at the two openings. I would also recommend dumping any oil out of the old compressor and putting in new oil. I believe it holds 7 oz of which can be purchased at any auto parts store. Take your time and make sure all of your line connections are tight. Good luck!
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1993 Volvo 240 219,000 miles
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Thanks for the advice.
How about the freon, will it also
leak out of the compressor?
Thanks,
Joseph
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You need to let the freon out of the compressor before opening it up...VERY IMPORTANT! If you do not have the means to properly vent and refill the system, you may want to consider taking it to a garage. I got a quote of $119.00 from a local shop. It included removing and storing my freon, then upon my return, pulling a vacuum, checking for leaks and adding my freon back in. I had a similar quote from Firestone, but they had no way to store my freon for the day.
Another option is to vent it directly into the atmosphere, but I believe that to be illegal. This won't help you if you don't have the means to pull a vacuum or manifolds to add the freon back in. You can purchase an inexpensive vacuum pump from Harbor Freight tools for about $12 that works with your air compressor. It worked very well for me. Let us know how it turns out.
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1993 Volvo 240 219,000 miles
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You need to have the system evacuated and recharged. To do this properly you need a recovery machine to recover your old refrigerant, a vacuum pump to suck the system down and evacuate it, a charge machine to weigh and dispense the R-134A, and a set of manifold guages to hook up to your system. In alot of shops the recovery/recycle/recharge machine is all built into one deal. If your problem is as simple as a defective or worn out clutch and the rest of the system is in good working order it is not necessary to replace the drier. If the drier has been exposed to atmosphere for any length of time, other than the small amount of time you will have the system open to change out the compressor, or you have reason to suspect that the system has been contaminated or has metal particles in it then you should change it, otherwise just do a good evacuation on it and do not worry about it. A good evacuation on it equates to at least an hours time on the vacuum pump. Myself, I would not use a used compressor, hell you have a used one on there already if you know what I mean. If you do then I would have to agree with draining it and putting fresh oil in the system and put a little bit of UV tracer dye in it as well to facilitate finding any leaks that may occur down the road.
To sum it up, find a shop that will suck out your old refrigerant, go back home and change out your compressor, change the oil in your used part, put some dye in it (if you cannot find some then have the shop do it when they service the system), use new O rings, take it back to the shop, have them suck it down for at least an hour and recharge it with virgin R-134, not your old crap,pay the man and hope that your new compressor works. That will be evident as soon as the tech goes to charge it back up after the evac.
Good Luck
Mark
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Mark, since he is installing a used compressor, he should replace the drier. There is no telling how the compressor was stored (climate-controlled, dusty, moist, etc) or if the connections were sealed shut. The drier is just a simple, low-cost ($40) insurance policy in case his replacement has something in it. Otherwise, I agree with what you said.
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1993 Volvo 240 219,000 miles
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Gentlemen,
I pulled the compressor out of an 93 240 ClASSIS today.
The car had been maintained, was well kept and had been
serviced well (it had new belts and hoses)and the engine was clean.
When I let the A/C hoses loose the freon leaked out (sorry),
but when I removed the compressor there was no oil leak.
Where is the oil in the compressor. I covered the hose
ends with plastic and ties.
So my next step is to put new oil in it (but not sure where),
then take my car to a shop to vacuum the old freon out.
Then I will replace the compressor and return to have it
checked for any leaks. Then refilled with R134.
Should I will replace the drier, just to be safe, or did my
sealing up the hose ends help with having to replace the drier?
Is this all correct.
Thanks,
Joseph
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Joseph, if you look at the back of the compressor toward the top, there is a long nut (14 or 15 mm, I think). Unscrew that and pour oil in there. I still feel a new drier is a good idea. The challenge is that most parts places don't carry it and it has to be ordered (1 - 2 days to get them). I paid $40 at AutoZone. Other places were much higher (Volvo dealer wanted $135). Let us know how it goes.
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1993 Volvo 240 219,000 miles
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