Ac compressor oil?

[Sonny]

Is this the right oil for my 1970 Belvedere?

 

[1967coronet]

Are you doing a flush and convert to 134 ? Do not use PAG 46 oil in a R12 system
Im pretty sure you will want pag 100 in the 2cyl comp if you convert to 134,
if it is still r12 they used to run ester / mineral oil.
Google it and dbl check though.

 

[moes]

R-12 Freon or 134a

 

[Sonny]

Are you doing a flush and convert to 134 ? Do not use PAG 46 oil in a R12 system

I bought a converted rebuilt R134 compressor, new dryer, new evaporator, and condenser. Only reusing the lines. What should I clean the lines out with? Brakekleen or similar?

 

[Sonny]

The oil in the picture was listed as “recommended” when I purchased the compressor from Summit.

 

[moes]

134a use PAG OR ESTER OIL - 11oz

blowing out with compressed air or liquid flushing with an air-conditioning liquid flushing agent.

 

[1967coronet]

^^^^^^^^ this, don't use brakekleen ect use a ac flush and blow dry, plus let the vac pump run extra long once the system is together.

 

[idrivemopar]

DO NOT USE BRAKEKLEEN!!!!!!!
What you want is from AC Pro, called clean and flush, Here is a link to it from Oreillys. https://www.oreillyauto.com/detail/...ics-32-ounce-a-c-system-cleaner/cqs11/4384841

Also, the rubber supposedly on R-12 should be replaced as molecule size difference between R-12 and 134a, 134a being smaller, means that it will seep through hoses used on R-12. So, if you don't replace and start losing refrigerant overtime, that could be one of the reasons. Don't for get to use green O-rings as well.

Also make sure the filter screen on the inlet side of the compressor is clean!!!

 

[Sonny]

DO NOT USE BRAKEKLEEN!!!!!!!
What you want is from AC Pro, called clean and flush, Here is a link to it from Oreillys. https://www.oreillyauto.com/detail/...ics-32-ounce-a-c-system-cleaner/cqs11/4384841

Also, the rubber supposedly on R-12 should be replaced as molecule size difference between R-12 and 134a, 134a being smaller, means that it will seep through hoses used on R-12. So, if you don't replace and start losing refrigerant overtime, that could be one of the reasons. Don't for get to use green O-rings as well.

Also make sure the filter screen on the inlet side of the compressor is clean!!!

Thanks. Glad I asked!
I already replaced all o rings with green ones. Not sure I saw a “screen”. Where is it?

 

[bearman]

Did you change your txv valve or just going to run the r12 one.

 

[Sonny]

Did you change your txv valve or just going to run the r12 one.

I assume you mean the 1” diameter cylinder I pulled out of the old one. I stuck it in the new one. Should I replace it? Clearly I know nothing about this. Just trying to get it assembled for a shop to charge it. Open to any thoughts.

 

[bearman]

Txv valve should be gold in color and it's near the evap. Question why are you changing over did you loose the compressor

 

[Sonny]

Txv valve should be gold in color and it's near the evap. Question why are you changing over did you loose the compressor

I see it. I was going to reuse it but is there a different one for R134? I replaced all parts cause they haven’t been used in 20 years and comp was frozen up.

 

[bearman]

I would change it just because dont know if it works or not and a system down that long its just better to be safe than sorry

 

[bearman]

Sonny think of it as the carb on a engine

 

[Sonny]

Sonny think of it as the carb on a engine

Thanks. I also pulled a cylinder about 1” in diameter from inside the old compressor. What is that called and should I replace it too?

 

[bearman]

Got a pic

 

[Sonny]

Got a pic

I dont. It was in one of the two holes that connect to the hoses and had a Spring on top of it. Pulled it out as it had o rings around it.

 

[bearman]

Is compressor a rebuild or reman. I believe that comes out. But need to ddl check me on that did it come out from one of the port holes

 

[Sonny]

Is compressor a rebuild or reman. I believe that comes out. But need to ddl check me on that did it come out from one of the port holes

It’s a reman. There wasn’t one in the new compressor. Just in the old R12.