Replace Compressor
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Replace Compressor
I need to replace the compressor on my 95 Bronco. How would I go about filling it back up with freon? I have the a gauge/fill hose from autozone. Is that all I need or could that be a big mess. Any advice would be great. Thanks.
Fleet Mechanic
Joined: Feb 2006
Posts: 1,776
Likes: 5
From: Lorain County, Ohio
It probably wouldn't be a big mess, just a waste of your time and money.
At minimum, you will need a vacuum pump and a manifold gauge set. The system MUST be pulled into a hard vacuum before charging. This removes air and moisture from the system.
Throw that gauge/fill hose in the trash where it belongs and get a proper can tap to go with a gauge set.. You can often rent a pump and gauge set from a local parts store. The can tap will be on the same rack with the other AC "stuff". Aside from virgin refrigerant, it's probably the only thing on that display worth paying money for.
There may be more that you will need depending on why you are replacing the compressor. What is wrong with the old one?
-If the compressor failed internally, you will need an orifice tube, an accumulator, and possibly a condenser. The system will be full of debris from the compressor that must be removed by disassembly and flushing.
-If you had a compressor "Black Death" failure, you will need to remove everything under the hood and replace it. Pull the orifice tube and inspect it. If it is plugged with black goo, you have a black death failure.
-If you had a clutch failure you can replace the compressor without flushing the system, but you need to replace the orifice and accumulator while the system is open. This also applies to replacing a leaky compressor.
-Regardless of what else you do, replacing all of the o-rings in the line connections is cheap, easy insurance. They are all getting old at 13 years and are potential leakers.
At minimum, you will need a vacuum pump and a manifold gauge set. The system MUST be pulled into a hard vacuum before charging. This removes air and moisture from the system.
Throw that gauge/fill hose in the trash where it belongs and get a proper can tap to go with a gauge set.. You can often rent a pump and gauge set from a local parts store. The can tap will be on the same rack with the other AC "stuff". Aside from virgin refrigerant, it's probably the only thing on that display worth paying money for.
There may be more that you will need depending on why you are replacing the compressor. What is wrong with the old one?
-If the compressor failed internally, you will need an orifice tube, an accumulator, and possibly a condenser. The system will be full of debris from the compressor that must be removed by disassembly and flushing.
-If you had a compressor "Black Death" failure, you will need to remove everything under the hood and replace it. Pull the orifice tube and inspect it. If it is plugged with black goo, you have a black death failure.
-If you had a clutch failure you can replace the compressor without flushing the system, but you need to replace the orifice and accumulator while the system is open. This also applies to replacing a leaky compressor.
-Regardless of what else you do, replacing all of the o-rings in the line connections is cheap, easy insurance. They are all getting old at 13 years and are potential leakers.
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