disaster after changing secondary tensioner?
#41
06-09-2019, 03:39 PM
the AC have low gas is there specific gas that fit on the x308? or the regular AC gas works fine? also the guy who checked the gas said it's better to drain it then refill it with all new gas .I don't have experience in the AC section . so what should I do ?
#42
06-09-2019, 04:54 PM
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Technically said, the government controls the gas used in AC units. Here in the US we has the old R-12 (which is discontinued, but available) and the newer R-134. If your going to purge the AC, then do the orifice tube and put fresh AC oil in it. If your gas is low, there has to be a leak (it is a sealed system after-all), ...so have a fluorescent dye put in it to find it or replace all the O-rings.
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RA110623 (06-09-2019)
#43
06-09-2019, 05:06 PM
Senior Member
Two types of refrigerant are used in automotive air conditioners. The first one is called R12, while the other one is R134a. They may sound just like similar part numbers, but there are major differences between them. For starters, R12 was the one that is on older vehicles. It goes by the brand name of Freon, and it earned a bad reputation when scientists found out that it was responsible for helping to deplete the ozone layer.
R12 is still used in some older cars but is becoming very hard to find especially those that have not been converted to a more modern and environmentally safer system. R12 refrigerants were used before 1995. So older vehicles all had this as a standard fixture if the had air conditioning units. Since that time, some people have converted their air conditioning system, and cars produced after 1995 were all provided with R134, which is a refrigerant that is not believed to harm the environment.
To tell if you have R134a, start by considering the year of your vehicle. If you have a vehicle manufactured after 1995, then you should have R134a. If your vehicle is older you may still have R134a; it just depends on if it has been converted. To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. And you can also look for R134a adapters, which would be located on the charge parts.
you can always call into an auto electrical shop most of them do AC on car's they will tell you in minutes.
charging a system if I ever change a system from R12 to 134a I know it is oil compatible but I still change the receiver too! then vac pump the system to 30 microns and recharge, the amount of gas/liquid can be found by manufactures spec.
you can do it by the feel of pipes but some experience is needed.
to sum up I believe your car has 134a. no need to remove and drain the oil in the compressor.
I will look for the gas charge for you
2002 XJ correct?
R12 is still used in some older cars but is becoming very hard to find especially those that have not been converted to a more modern and environmentally safer system. R12 refrigerants were used before 1995. So older vehicles all had this as a standard fixture if the had air conditioning units. Since that time, some people have converted their air conditioning system, and cars produced after 1995 were all provided with R134, which is a refrigerant that is not believed to harm the environment.
To tell if you have R134a, start by considering the year of your vehicle. If you have a vehicle manufactured after 1995, then you should have R134a. If your vehicle is older you may still have R134a; it just depends on if it has been converted. To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. And you can also look for R134a adapters, which would be located on the charge parts.
you can always call into an auto electrical shop most of them do AC on car's they will tell you in minutes.
charging a system if I ever change a system from R12 to 134a I know it is oil compatible but I still change the receiver too! then vac pump the system to 30 microns and recharge, the amount of gas/liquid can be found by manufactures spec.
you can do it by the feel of pipes but some experience is needed.
to sum up I believe your car has 134a. no need to remove and drain the oil in the compressor.
I will look for the gas charge for you
2002 XJ correct?
#44
06-09-2019, 05:12 PM
Two types of refrigerant are used in automotive air conditioners. The first one is called R12, while the other one is R134a. They may sound just like similar part numbers, but there are major differences between them. For starters, R12 was the one that is on older vehicles. It goes by the brand name of Freon, and it earned a bad reputation when scientists found out that it was responsible for helping to deplete the ozone layer.
R12 is still used in some older cars but is becoming very hard to find especially those that have not been converted to a more modern and environmentally safer system. R12 refrigerants were used before 1995. So older vehicles all had this as a standard fixture if the had air conditioning units. Since that time, some people have converted their air conditioning system, and cars produced after 1995 were all provided with R134, which is a refrigerant that is not believed to harm the environment.
To tell if you have R134a, start by considering the year of your vehicle. If you have a vehicle manufactured after 1995, then you should have R134a. If your vehicle is older you may still have R134a; it just depends on if it has been converted. To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. And you can also look for R134a adapters, which would be located on the charge parts.
you can always call into an auto electrical shop most of them do AC on car's they will tell you in minutes.
charging a system if I ever change a system from R12 to 134a I know it is oil compatible but I still change the receiver too! then vac pump the system to 30 microns and recharge, the amount of gas/liquid can be found by manufactures spec.
you can do it by the feel of pipes but some experience is needed.
to sum up I believe your car has 134a. no need to remove and drain the oil in the compressor.
I will look for the gas charge for you
2002 XJ correct?
R12 is still used in some older cars but is becoming very hard to find especially those that have not been converted to a more modern and environmentally safer system. R12 refrigerants were used before 1995. So older vehicles all had this as a standard fixture if the had air conditioning units. Since that time, some people have converted their air conditioning system, and cars produced after 1995 were all provided with R134, which is a refrigerant that is not believed to harm the environment.
To tell if you have R134a, start by considering the year of your vehicle. If you have a vehicle manufactured after 1995, then you should have R134a. If your vehicle is older you may still have R134a; it just depends on if it has been converted. To tell if it has been converted you can look for a sticker on the unit under the hood, which would indicate that it is R134a. And you can also look for R134a adapters, which would be located on the charge parts.
you can always call into an auto electrical shop most of them do AC on car's they will tell you in minutes.
charging a system if I ever change a system from R12 to 134a I know it is oil compatible but I still change the receiver too! then vac pump the system to 30 microns and recharge, the amount of gas/liquid can be found by manufactures spec.
you can do it by the feel of pipes but some experience is needed.
to sum up I believe your car has 134a. no need to remove and drain the oil in the compressor.
I will look for the gas charge for you
2002 XJ correct?
#45
06-09-2019, 05:21 PM
Technically said, the government controls the gas used in AC units. Here in the US we has the old R-12 (which is discontinued, but available) and the newer R-134. If your going to purge the AC, then do the orifice tube and put fresh AC oil in it. If your gas is low, there has to be a leak (it is a sealed system after-all), ...so have a fluorescent dye put in it to find it or replace all the O-rings.
#47
06-09-2019, 07:07 PM
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Dutchy's AC experience should help with that.
#48
06-09-2019, 07:23 PM
#49
06-09-2019, 07:26 PM
okay that's clear . I think even if there's leaks it's not that big . thanks for the help 👍
#50
06-12-2019, 04:17 AM
Senior Member
The dye can be a bit hit and miss, I usually pressurize the system to 2500 psi using a leak detector or the bubble leak that you can get from any airconditioning wholesaler ( the ones that sell domestic split systems for houses)
most leaks are at the compressor the clutch on the front of the compressor the shaft tends to leak, that is why you should run the AC in winter just use heat as well to keep warm and make sure the clutch is engaged on the compressor.
by doing this say once per month you will keep the oil circulating and the seals soft.
A leak needs to be fixed as it will get worse and sure as hell on a hot summers day you will curse yourself heeee.
most leaks are at the compressor the clutch on the front of the compressor the shaft tends to leak, that is why you should run the AC in winter just use heat as well to keep warm and make sure the clutch is engaged on the compressor.
by doing this say once per month you will keep the oil circulating and the seals soft.
A leak needs to be fixed as it will get worse and sure as hell on a hot summers day you will curse yourself heeee.
#51
06-12-2019, 07:10 AM
The dye can be a bit hit and miss, I usually pressurize the system to 2500 psi using a leak detector or the bubble leak that you can get from any airconditioning wholesaler ( the ones that sell domestic split systems for houses)
most leaks are at the compressor the clutch on the front of the compressor the shaft tends to leak, that is why you should run the AC in winter just use heat as well to keep warm and make sure the clutch is engaged on the compressor.
by doing this say once per month you will keep the oil circulating and the seals soft.
A leak needs to be fixed as it will get worse and sure as hell on a hot summers day you will curse yourself heeee.
most leaks are at the compressor the clutch on the front of the compressor the shaft tends to leak, that is why you should run the AC in winter just use heat as well to keep warm and make sure the clutch is engaged on the compressor.
by doing this say once per month you will keep the oil circulating and the seals soft.
A leak needs to be fixed as it will get worse and sure as hell on a hot summers day you will curse yourself heeee.
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Dutchy (06-13-2019)
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