Help with Mini A/C overhaul
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Laughing Gas
Joined: Jan 2017
Posts: 1,221
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Help with Mini A/C overhaul
I saw my low pressure a/c hose is ruptured. Currently I have a new low pressure hose, o rings, orfice tube, dryer, and condenser. Is there anything else I should replace while in here? Also does anyone know a rough cost on having the system evacuated and recharged ?
thanks
thanks
FTE Leadership Emeritus
Joined: May 2014
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From: Lake Hartwell, GA
Consider checking and replacing if needed the resistor next to the blower fan.
Also, inspect and clean if needed the evaporator coil as seen below.
If your low pressure hose was busted, the system will not need to be evacuated. It will need to be vacuumed and charged though. Prices for this service can vary quite a bit based on freon cost from the shop and their labor rates, so I will not state anything here.
Also, inspect and clean if needed the evaporator coil as seen below.
If your low pressure hose was busted, the system will not need to be evacuated. It will need to be vacuumed and charged though. Prices for this service can vary quite a bit based on freon cost from the shop and their labor rates, so I will not state anything here.
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Laughing Gas
Joined: Jan 2017
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The blower motor resistor was recently replaced. As for the evaporator core it was surprisingly clean last I checked. The other surprise came when I went on the test drive and the “quick connects” we’re dumping coolant everywhere!!! After replacing the heater core coolant lines all was normal again. Yes I meant to say vacuum not evacuated that’s what’s making the job easier for me the self evacuation part lol definitely planning on buying the other line and maybe the compressor If I can get a good price. Despite the a/c blew cold last time used and based on if the compressor breaks in the future I’ll have to buy the dryer, orfice tube, and from what I have read the condenser again.
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Laughing Gas
Joined: Jan 2017
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That’s that ordered the other hose so now I have both and the compressor w clutch from Ford all getting slapped in today with fresh coolant! It would be a real annoyance if/when the compressor goes out to have to re buy parts and have to pay for the system recharge again.
Cargo Master
Joined: Aug 2003
Posts: 2,332
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From: Eastern Washington
That looks like a good list. I think the only thing not on it is the evaporator.
If you did all the parts swapping I would charge an hour labor ($106) and $35/# of refrigerant to vacuum it for 45 minutes and charge it with refrigerant.
It would probably be about $175 total.
Don't forget to put some Pag oil in each component you replace.
If you did all the parts swapping I would charge an hour labor ($106) and $35/# of refrigerant to vacuum it for 45 minutes and charge it with refrigerant.
It would probably be about $175 total.
Don't forget to put some Pag oil in each component you replace.
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Laughing Gas
Joined: Jan 2017
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Unfortunately, I assumed all the oil comes in the compressor. The shop guy said he felt there was about 5 oz in the compressor but we did not confirm it so he added 3 more oz. Of course I would have liked to stop the project and add the oil to each part but that was not an option. 500 miles since the install all is working well. However, I want to get to the bottom of the oil issue and plan on doing more research.
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Cargo Master
Joined: Aug 2003
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From: Eastern Washington
The oil is carried by the refrigerant and is basically evenly spread through the system.
There is a chart somewhere that tells you how much is typically in each component, so when a component is replaced that amount of oil can be put in.
If a compressor fails the system should be flushed, hopefully getting any (or at least most) contaminates out of the system.
The oil gets flushed out as well, so you would assume there is none in it.
You changed everything but the evaporator, and it probably didn't have a whole lot of oil in it, maybe an ounce.
Standard procedure is to drain the old compressor and measure how much oil comes out. I haven't ever had much luck getting oil out of a compressor.
Most new compressors will come pre charged with oil, but I have tried to drain them and never recovered much oil.
Your system takes 9oz, assuming the compressor had 5 in it, 1 oz remaining in the evaporator, and your mechanic added 3 more ounces adds up to 9oz. Perfect!
There is no way to determine how much oil is in the system. If you recover the refrigerant some oil will come out with it, but not all. Typically only 1-2 ounces.
There is a chart somewhere that tells you how much is typically in each component, so when a component is replaced that amount of oil can be put in.
If a compressor fails the system should be flushed, hopefully getting any (or at least most) contaminates out of the system.
The oil gets flushed out as well, so you would assume there is none in it.
You changed everything but the evaporator, and it probably didn't have a whole lot of oil in it, maybe an ounce.
Standard procedure is to drain the old compressor and measure how much oil comes out. I haven't ever had much luck getting oil out of a compressor.
Most new compressors will come pre charged with oil, but I have tried to drain them and never recovered much oil.
Your system takes 9oz, assuming the compressor had 5 in it, 1 oz remaining in the evaporator, and your mechanic added 3 more ounces adds up to 9oz. Perfect!
There is no way to determine how much oil is in the system. If you recover the refrigerant some oil will come out with it, but not all. Typically only 1-2 ounces.
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