adding oil to the A/C compressor
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Joined: Aug 2013
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From: Cottonwood
adding oil to the A/C compressor
I'm replacing the seal in the A/C compressor of my '95 powerstroke. It has had a leak for quite a few years and I finally found the leak on the shaftseal. I know I have been losing tiny amounts of refrigerant oil all these years but am not sure just how much oil it takes or how I would know at what level it is operating. I have access to recovery machines and all the good stuff to do the recovery and recharge. Any help would be appreciated.
Fleet Owner
Joined: Oct 2005
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From: Kentucky
If you think you have lost the oil that means the refrigerant is also gone. There is no separate reservoir for the oil like A/C compressors used to have. With that said that means the inside of the system has been exposed to moisture.
Best suggestion is to replace the compressor and receiver/drier (accumulator). That way you can start with a fresh charge of oil. A new compressor is usually pre-charged with 7 oz. of oil. When replacing the accumulator it is suggested to add another 2-3 oz.
Whenever you open an A/C system is is highly recommended to pull out the orifice tube to inspect it for signs of debris. If there is a lot of black build up on it then you know the hoses, condenser and evaporator need to be flushed.
Regardless of the condition of the orifice tube, I suggest to replace it too.
Best suggestion is to replace the compressor and receiver/drier (accumulator). That way you can start with a fresh charge of oil. A new compressor is usually pre-charged with 7 oz. of oil. When replacing the accumulator it is suggested to add another 2-3 oz.
Whenever you open an A/C system is is highly recommended to pull out the orifice tube to inspect it for signs of debris. If there is a lot of black build up on it then you know the hoses, condenser and evaporator need to be flushed.
Regardless of the condition of the orifice tube, I suggest to replace it too.
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