Howdy. I've got an AC leak and I've got dye on a component indicating where the leak is. Problem is, I don't know what it is, whether it's part of the AC line it's connected to, etc.. It's the rectangular piece that is on the AC line, and is between the front grill and radiator (or condenser) next to the canister with the sight glass. I have the OEM factory manual, but it doesn't help.

Clues???

Also, if anyone knows something about replacing it, please let me know.

thanks [img]http://pg.photos.yahoo.com/ph/cyndyschaefer/album?.dir=a59escd&.src=ph&store=&prodid=&.done=http%3a//pg.photos.yahoo.com/ph/cyndyschaefer/my_photos[/img]

I'm not sure what it is, but I think I have a new one.
Look at the end of the line sticking out of the box...

What vehicle do you own?

oops... it's a '98 T100. The component in your picture doesn't look quite like the one I have that is leaking, but then I haven't seen it from any angle other than from above. Still, the one in your picture appears smaller....

its on a low pressure line. take off the grill and take it out. there's going to be an o-ring in there and it has failed.

The blocks on the ends of the lines are just the type of fittings they use. As was mentioned, they use o-ring seals (which can be seen in the pic that H20man posted). The line itself could be bad, but more likely its the o-ring.

Thanks all. I got the grill off, cleaned the area and drove around to check for the leak. It does look like the o-ring is the problem. I guess the dealer is the only place to go to get the correct o-ring. I've not had luck before going to the auto parts store for such parts before.

I haven't had any problems getting my local NAPA to find me matching o-rings when I bring them in. A/C shops will have them too. But the dealer will work...

When you replace an "O" ring in an AC system, do you coat it with silicone lube or anything or just put it in dry?

put it in dry

you should lube it up with compressor oil, or whatever type of oil is used in your a/c system.