I blew the low pressure line tonight that comes from the expansion valve and goes to the compressor. It is tied into the high side line at the expansion valve. Anyone know where I can buy a new one? It rubbed on the frame rail before I had the truck and I put a hose on the edge of the frame to keep it from rubbing but I guess it was too late.

 

Take it to a hydraulic hose shop, they can build a new one.

Were you on R12?

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No it was r134.

 

Well, you can still have it rebuilt. Much cheaper than buying a new one. You should replace the drier since the system is now open and exposed to moisture (humidity).

 

Actually, the dryer isn't a critical replacement. It's exposed to more moisture while the system is closed than when it is exposed to atmosphere. If anything, the dryer gets a drying when the system is open. If you were replacing your compressor, the dryer is typically recommended by the manufacturer of the compressor as it won't void the warranty. I know all of this from experience of my own and a very knowledgeable friend in the heating/cooling industry for 30 years.

 

That is interesting. I had A/C training and was taught that if the system is open for more than 30 min, the drier should be replaced. Same with a new drier, time limit was 30 minutes max before evacuation.

But, hey, if there are no issues, then go by what ever is known to work.

If the system was vacuumed properly, the moisture should have been removed. However, it is possible to re introduce moisture through the charging process. It's usually not enough to worry about though.

 

That's exactly true and what should be done before a recharge. In my case, however, I replaced my dryer in order to be able to honor the warranty on the new compressor I bought at that time.