York compressor failure.. Brand freaking new unit!

[Beach_Dude]

So, after doing everything to a Tee, brand new EVERYTHING, including a Brand Freaking NEW York compressor, not a rebuild, All new custom hoses, new evaporator, Evap switch, condenser & Dyer, this happens...



I'm almost down to the second can of R12, gauge is high, around 50PSI on the low side because I'm charging, almost 4 - 8 OZ of freon more to go to get to factory specs for the compressor and unit, then all of a sudden, BOOM!

Cover my face, fear set in, shut the motor down instantly, and there's dye ALL OVER THE BACK SIDE OF THE UNIT!

No hoses blown, nothing. So, it's either the rear seal of the compressor or the washer on the oil drain plug failed.

I AM SO PISSED OFF RIGHT NOW!!!

[bkilby]

The York has a blow off valve in the rear. It blows when there's too much head pressure.

[Beach_Dude]

So, just clean the dye off and it's good?

Probably too wet on the charge could cause that?

[bkilby]

In case you want to know more about Yorks.....

http://tccimfg.com/wp-content/uploads/2014/04/TCCI-SM-8.5x11-2014-12-16P.pdf

[bkilby]

So, just clean the dye off and it's good?

Probably too wet on the charge could cause that?

Too much freon maybe. And don't add freon with oil. New Yorks come with oil already. Wouldn't hurt to check the oil level though.

[babywag]

That’s not what happened to mine...
Mine was DOA, wouldn’t build pressure and NOISY.
Metal in oil when I drained it as well.

Did you flush/check new hoses? Mine had debris in them, would have easily plugged the expansion valve had I not found. Little pieces of hose(s) from cutting/installing hose ends?

[Beach_Dude]

Connected everything back up and ran a test on pressure at idle.

Roughly 80+ on low side

Roughly 90+ on high side.

Compressor officially dead?

[Curly5759]

I had a brand new York compressor fail after only 20 miles. I had drained and refilled the compressor with the correct type/amount of oil. After 20 miles it was still cooling but the unit was knocking badly. Had to replace it. Since then all is good.

[Beach_Dude]

All AC people, would 80+ on low side and roughly 90+ on high side be a dead compressor?

Because I'll do another swap this weekend if needed.

Somebody chime in.

[babywag]

How exactly are you charging system?

[Beach_Dude]

How am I charging the system..?

I mean, like step by step or the method?

High and low sides connected, cans of r12, and filling system until specific levels are reached. :P

I'm probably going to replace the high side service valve(s) now sice the high side unit leaks like made!

I've found that earlier mustang parts are identical.

Does anybody know if the suction and high side both use the same size diameter flare fitting?

Obviously I'm going to find out, but need to wait till I get the system evacuated.

If anyone has a direct part reference, shout it out!

[FSJunkie]

A couple things come to my mind.

One: I have never seen a pressure relief valve built into a York compressor. I've seen them on the bottom of receiver/dryers, but not on the compressors. Even so, those relief valves are set for 400-600 PSI.

Two: You know the system has to be evacuated for at least 20 minutes to remove all the air before you charge it with refrigerant, right? A system containing refrigerant and air won't work. You need refrigerant only.

Three: 80-90 PSI on both the suction and discharge sides of the compressor is normal when the system is not running. The pressure of a non-running system is determined by the ambient temperature, not the charge level. A running system will be around 20 PSI on the suction side and 150 PSI on the discharge side, depending on a lot of things.

Four: The most accurate way to charge one of these systems is by watching the sight glass on the line between the receiver/dryer and the expansion valve. The glass needs to be clear (liquid only). Any bubbles mean the system is either low or contains air. These expansion valve systems are VERY tolerant on their charge level. Basically so long as there is enough refrigerant to maintain a constant flow of liquid to the expansion valve and not so much refrigerant that the receiver/dryer is completely full, then it will work perfectly. There is no "It cools slightly worse because it is low on charge" with these. They basically either cool to full capacity, or don't cool at all.

[Beach_Dude]

Would it be safe to assume that the AC clutch being engaged and turning, with standard York Compressor charging noises would indicated that the compressor is on or could it still be off?



Still curious on the diameter of the flare side differences between the high and low side service valves though... Totally should have taken note on that when I had them made.

[Beach_Dude]

Just in case anyone is interested, here's a supplier for a ton of service valves and the two I purchased:

R12 Tube O-Ring Backseat Valve With # 8 Male Flare Thread

https://www.apairinc.com/shopping/productDetails.aspx?i=129768

R12 Tube O-Ring Backseat Valve With # 10 Male Flare Thread

https://www.apairinc.com/shopping/productDetails.aspx?i=129777

[TexasJ10]

Would it be safe to assume that the AC clutch being engaged and turning, with standard York Compressor charging noises would indicated that the compressor is on or could it still be off?



Still curious on the diameter of the flare side differences between the high and low side service valves though... Totally should have taken note on that when I had them made.

I'm not sure what you are asking here. From your post below you identify the valves you purchased as being low side #10 (5/8"), and high side #8 (1/2").