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NW KS | Since it has been sitting apart I would definitely replace the receiver drier. Typically the recommendation is to replace the drier any time you have the system open to work on it but that doesn't always happen. It wouldn't be hard to run some ac flush or acetone through the ac condenser while it is off the tractor. If you pull the ac system apart further you might consider flushing the entire system. Ac oil will pull moisture in out of the air. I've had good luck getting the expansion valve off with some heat. Take your time and don't force it if it doesn't want to come off. | |
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4440 ac question
