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ac drier no sight bubble

74 challenger

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bought ac drier from ROCKAUTO ,do not buy the 4 seasons drier there is no sight bubble on it,why do they say oem replacement and its not the same? Can anyone sell what they say it is? Anyone no if i can clean the old one? thanks
 

moparleo

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It seems that you are going the old school route. If you want to do it to look like OE. You can have your compressor rebuilt and your drier rebuilt also by companies that specialise in a/c parts and repair. Most cities will have someone who the other repair shops go to for parts. Just got to look for them. Replaced OEM is just that, a replacement not identical to. DO NOT open or remove the plugs in the drier or it will be ruined in short order. The purpose of the drier is to remove moisture from the system. It does this with the chemical pack in side the drier. Exposing it to open air will cause the drier to absorb the moisture in the air making it useless.
Just so you know if you try to rebuild your a/c system yourself, there are more than a few things you need to know about doing a/c work properly, as well as specialised tools and procedures . That is why you should have professional help with the process. Do your homework BEFORE you start the work. It can save many dollars in ruined parts.
I would recommend that if you want to do it your self, to round up the parts you will need first. If you can't find new replacement hoses, have yours rebuilt by the local hose repair shop. The rubber , o-rings and seals need to be fresh and compatible with the refrigerant you are going to use. Major parts of a Mopar a/c system will be : compressor, dryer, low pressure switch, condensor, evaporator, expansion valve, high and low pressure hoses, compressor oil and virgin refrigerant. Recycled refrigerent may have contaminants that can damage your a/c system. You will also need a vacuum pump and accurate gauge. A way to properly measure the oil and refrigerant added to the system so you won't under charge or over charge the system. Would also recommend adding u/v dye to the system to check for system leaks after charging the system. Also access to a portable a/c leak detector. You will need to check the laws regarding a/c repair and certificates that may be required. If you have questions about what the parts or procedures do in an a/c system, I would not recommend for you to attempt to do this service by yourself. This info is for anyone who is thinking about getting their cars ready for the summer and need a/c repair work done.
 
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74 challenger

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thanks Leo my friend is doing it for me. He is a certified machanic for over 20 years,im trying to do my part of it so he wont have to do to much.Hes not charging me anything and i know you cant use the old drier. Bought the oil ESTER,drier, new green o rings,compresser works fine,condenser is good just waiting for the evaporater. My friend said i didnt need the bubble on the drier.Was also told no more then 8oz of oil in the system.He has the vacuum pump and gauges.
 

moparleo

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That is good to have the proper help. The oil requirement is different in most systems depending on the type of compressor, volume of the system. The drier glass that was original was there because in the old days there were no laws regarding a/c systems leaking freon into the air, which is now against the law. It what used to show air in the system which is a/c's mortal enemy. A/c systems are made primarily from aluminum because it will not rust like iron will when it oxidises. Also currently most states require the person servicing the system to be certified in the proper use and consequences of improper use and possesion of R-12 Freon refrigerant. Remember that this is your a/c system, not someone elses when you need service in the future. I hold an IMACA certificate in California which is the strictest state for any type of air pollutants. Put in the dye, please.
This info is really for anyone interested in a/c. Thanks
 

74 challenger

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yes i plan on putting in the dye. I wouldnt try to do it my self,I can turn a wrench but ac clueless.
 
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