AC expansion valve replacement

IIRC -

In both cases, it is just a spring like pressure that holds things together. The coil - may - be soldered to the clip but I don't think so.

See you in a week.

Larry

The method of the sencing bulb is to transfer temp to the bulb and back to the capliary tube and to the TXV. The bulb .. I would not solder to the pipe. You can use some metalic heat transfer compound and then wrap it with black sticky thermal tape. Both cost maybe $10 at any HVAC supply. Its very important to tranfer the temp.

To answer your question I'm not 100% sure about the clip on the Pantera as I have not taken mine apart yet but I'm in the process of starting. But the two pieces should be touching.

Ron

If the clip method doesn't work for re-attachment, perhaps I'll just wrap the wire around the tube then cover it with some of the heat tranfer stuff that you're talking about. I have a huge roll of the black sticky tape to go over the top of that.

thanx,

John

sorry not 100% sure what it looks like. If at the end of the Cap tube there is a bulb .. thats what needs to touch .. the cap tube usually is just like and extension cord so the TXV can be used in multiple apllications. If there is no Bulb then the cap tube is it .. put a little heat trans compound on the pipe wrap it around and wrap it heavy with the black tape. Just a precaution .. are you brazing the TXV or soldering it in place. make sure you use a wet rag or there are other heat shielding methods to prevent damage to the new TXV. My advise is brazing it with 15% silver ... but make sure to use a fine torch tip.


Ron

The end of the tube from the expansion valve is coiled. There is not a bulb. The coiled tube is held to the evaporator with the clip. Then the whole thing is wrapped with the black sticky stuff.

the clip comes off with a little prying...hooray. Now I need to figure out how to get the exp valve off. not much room to use tools.
I've cleaned up the clip and the pipe. It should be a tight fit when going back on. Then I'm going to wrap the whole thing in that black stuff.

Any tips on removing the valve?

John

John,
Be sure to use two wrenches and don't stress the tube coming from the evaporator or you will be replacing the whole evaporator assembly.
Forest