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How do I store an A/C compressor

ron in charleston on Tue December 04, 2007 7:02 PM User is offlineView users profile

Year: 1992
Make: Mercedes
Model: 300E
Engine Size: 3L
Refrigerant Type: R134a
Country of Origin: United States

I want to remove an A/C compressor from one of my cars which is totaled so I can at a later date put that compressor in another vehicle. The compressor in the totaled car is under pressure.

Is there a way I can pull a vacuum on compressor that's removed from car so I can store it? I recall when I've changed a compressor on another of my cars it came with some type of plate on the top so it could be sent to me with a vacuum.

ice-n-tropics on Wed December 05, 2007 9:41 AM User is offline

For long term compressor storage it is prudent to avoid oxidation due to moisture.
1) Pull a long vacuum and pressurize with dry nitrogen to 100 to 200 psig.
2) An extra safety measure is to store with the clutch down so the shaft seal doesn't dry out.
3) Before using rotate the oil around in the crankcase because the PAG can drain down and leave the swash plate and piston bores or con rod sockets dry.
Believe-it-or-not: This applies to any new compressor that has been on the shelf for 6 months.
Old IV guy on the way to Charlotte

Isentropic Efficiency=Ratio of Theoretical Compression Energy/Actual Energy. How To Air Condition Your Hot Rod

NickD on Wed December 05, 2007 11:50 AM User is offline

My salvage yards just pull the compressors and toss them in a mud puddle and tell me they are good, what's wrong with that for storage?

oznznut on Wed December 05, 2007 12:00 PM User is offline

This may sound crazy, but after I bought some old POA valves, and tested to identify the good ones, I vacuum sealed them using a seal-a-meal food saver. Used the large bags. Don't know if this will help in the long term, but can't hurt.

2POINTautO on Wed December 05, 2007 11:18 PM User is offlineView users profile

I knew I was saving those little desiccant bags from my beef jerkey for something usefull, I can send them to you if you like. I trust you, COD will be fine, I will need to get at least 27 cents for them, shall we call it a deal. If thats too much, I will throw in the shipping, handling, packaging, insurance and I will forego the return reciept. Just look up JERK on EBay, I am sure you will be the only bidder so 27 cents should be GTG, I started at 25 cents but my sister bid 26 just to make me feel better, concider them yours.

Give all the dirty details
and dont forget the LO & HI pressures
Year, Make & Model would be nice too

NickD on Thu December 06, 2007 8:34 AM User is offline

Have to agree that storing AC components in a vacuum bag is not only more logical, but a lot less work than digging a hole in your backyard and filling it up with water to store these components. Maybe I will suggest that to my salvage yards, maybe not. They have become the very last resort for finding a part and that is if that part cannot be found anywhere else.

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