86 Ford Truck Adapter Seal Question

scjarena on Mon August 04, 2014 12:41 PM

Year: 1986
Make: Ford
Model: F350
Refrigerant Type: r12
Country of Origin: United States

I'm hoping somebody could help me out with what seal to use in an adapter with goes between the condenser and the liquid line. Truck is a 1986 and I was told that the "adapter" is actually a check valve which was used for a year or two around 1986, but I don't see any check valve in it. Anyways it has a deep groove for a seal, but typical round O-rings will not provide a correct seal. Does anyone know anything about this? The top pic shows the groove for the seal. Bottom pic is the adapter as installed. Thanks

Edited: Mon August 04, 2014 at 3:37 PM by scjarena

TRB on Mon August 04, 2014 1:57 PM

Images might help.

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mk378 on Mon August 04, 2014 5:17 PM

That looks like an AN or "hose swivel" fitting on the small end (between the hose and the adapter.) Those work like flare fittings-- two matching tapered metal parts forced together make a metal on metal seal. There is no need for an o-ring or other rubber sealing part.

If you're converting to 134a you may want to rebuild the line using barrier hose and get rid of the need for any adapters in the process.

Edited: Mon August 04, 2014 at 5:24 PM by mk378

Dougflas on Mon August 04, 2014 5:41 PM

Looks like the old sight glass ass'y connecting the nylon hose ass'y. As MK stared, just eliminate it.

scjarena on Tue August 05, 2014 9:14 AM

Ok Thanks for the info. I see the tapered surfaces on both side which could seal like an AN fitting, but I did pull out an old rubber seal out of the groove on that end, unless somebody put in there years ago in a previous repair. I plan to stay with R12. How would I go about replacing the hose and fitting with a one piece hose? Does someone manufacture a hose for this application or would it have to custom made? Thanks

Edited: Tue August 05, 2014 at 9:20 AM by scjarena

scjarena on Tue August 05, 2014 9:15 AM

Sorry, I created an extra post by accident.

Edited: Tue August 05, 2014 at 9:21 AM by scjarena

scjarena on Fri August 15, 2014 10:17 AM

I ordered a new line and one end is smaller. Anyknow know of any fitting adapters available to make this work, or did I simply get the wrong line? Any help would be appreciated.

Below is the new line next to the original.

Edited: Fri August 15, 2014 at 10:19 AM by scjarena