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Adam
Dodge Dakota
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11/06/2006
22:09:11
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 Subject: AC replacement
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Message:
Ok I managed to steal a compressor of E-bay for $34...guess no one wants AC when it gets cold. I'm gonna take it to the shop down the road on base and have them vacuum it out but can I just use my recharge kit or do they have to do something else to get refrigerant because it's completely empty?
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Bob Lincoln
Dodge Dakota
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11/07/2006
08:45:48
| RE: AC replacement
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Message:
You will need to replace your drier canister any time the system is open. If you're already R134a, just add a few ounces of oil to the compressor before installation and turn compressor by hand. If you're converting, flush the system to get the mineral oil out. Then evac it and add a can of R134a and start the engine, and add the rest until you reach stated capacity.
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Dan M
Dodge Dakota
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11/08/2006
10:18:50
| RE: AC replacement
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Message:
Good deal on the compressor. I got one from a salvage yard for $50 for my old truck. What most people don't realize is that the defrost uses the A/C system to remove moisture from the air.
In addition to what Bob said, replace the o-rings too. Personally I found the plastic disconnect tools better than the metal scissor type.
once you have the system all back together as Bob said evac the system. At this point they'll be able ot tell you if you have a leak before you fill it up with the refrigerant.
- Dan M
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Adam
Dodge Dakota
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11/08/2006
21:15:20
| RE: AC replacement
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Message:
So I have to replace my drier canister no matter what? I have the R134a refrigerant so there's no worries there.
'00 3.9
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Bob Lincoln
Dodge Dakota
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11/09/2006
08:16:03
| RE: AC replacement
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Message:
Anytime the system has been opened to the atmosphere for more than a few minutes, you should replace the drier. It's a dessicant and sucks up moisture. If it is open and absorbing the relatively large amount of water in the air, it will not be able to do its job after you close up the system - it will be saturated. Remember, tiny amounts of water vapor in the system will reduce efficiency and form acids that eat away the internal components.
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