This is a quick pic of an evap core from a parts car I was using for mock-up


Question - Do the lines going to the drier/accumulator and condenser require O-rings or do they seal with the flare?

Is there a foam seal kit for these? My replacement core came bare and even with some thick door seals, it still flops around pretty badly in the HVAC box, so no seal is possible and air will blow out through every orifice

 

As for the refrigerant lines.....all connections have O-rings. I just replaced my factory originals with new this week.

Haven't pulled the evap core so I can't talk about that.....

 

Hi All
I have an 85/305 with A/C leak somewhere - AND don't know about A/C in general
last year, I noticed when I removed all the A/C components for cleaning/painting (except evaporator) that when I removed the connection to the bottom tube that the tube on the evaporator was "loose" and could move around.
Question is, (before taking it to be dyed/diagnosed) How is the bottom tube connected to the evaporator unit, and should this tube be rigidly fixed and not move? so if it "moves" it would likely leak?
thank you for your help
tom

 

Hi again
Not sure why I cannot get a reply on this - maybe tooo dumb a question?
In looking at replacement evaporators the bottom pipe is pictured as welded to the core unit - just trying to confirm that the original is also AND now that I think of it, can the evaporator move side to side when in the box and maybe that movement is what I saw when they were connecting the pipe?
thanks in advance for your help
tom

 

Its hard fixed to it, but its aluminum so you can bend it some, all connections have orings, I've never seen foam kits but you can buy really thick weather stripping at the hardware store, this is what I used.

 

Thanks for the reply
I guess I'll need to remove the cover and see if the weld is broken prior to taking it for dye testing and replace it 1st if it is broken, otherwise the shop will charge alot for the new part and labor in addition to finding any other leak in the system. Was kind of wondering if the weld attaching the bottom pipe is prone to breaking so if it was moving from side to side it was likely broken.
tom

 

I would say its broken. I am setting up my AC with a new evaporator and that line is part of the core. It will bend but it should not be loose.

The curved line is the bottom line