Broken valve stem in my cars AC compressor. Wings are broken of the valve stem. No way to screw it out.

First you need to locate the low side of the charging system. This is usually determined by the connector you can get now days with the Freon. Not sure what year you are working with but the Schrader valve on the line will normally be two different sizes so you can not hook up to the high side. You can press down on the Schrader valve and if there is pressure in the system it will release a small amount of Freon, if you are trying to determine if it is allowing the Freon to enter the system. The Schrader valves screw in just like a bike stem valve does, if it needs to be changed. .

There is aa line coming off air compressor if you trace it down there are two valves on it was screw on caps. The smallest valve is where you hook up freon hose to add freon. I hope this helps, any clarifications needed fell free to ask.

If you follow the lines coming from the A/c compressor, you will find a red cap on one line and a blue cap on the other line. The blue cap is the suction side. Remove the blue cap. You can buy recharge kits at the parts store that have a line and tap included. You just couple the line there, open the valve on the freon can and start the engine. Run the a/c on high. Be careful not to overcharge the system. If the belts start squeeling, that will indicate too much freon in the system and a high presure situation.

ON THE LOWSIDE OF AIR SYSTEM.LOOK UNDER THE HOOD,MAYBE PASSNGERS SIDE AND REMOVE A VALVE STEM,LOOKS LIKE VALVE STEM ON TIRES TO ADD AIR.IT WILL HAVE A BLACK SCREW OFF CAP NEXT TO THE A/C DRYER OR DEPENDING ON THE ENGINE SIZE.SUGGEST YOU FOLLOW THE A/C LINES FROM COMPRESSOR TO THE DRYER,THE SMALLEST PORT WILL BE THE LOW SIDE THAT ALLOWS FREEON TO GO IN,BUT! I SUGGEST THAT IF YOU HAVE NEVER INSTALLED FREEON,PLEASE DO NOT ATTAEMPT AS YOU MAY BLOW A COMPRESSOR SEAL WHICH CAN COST AS MUCH AS A $1000.00 FOR PARTS ONLY! IT'S WORTH INVESTING $50.00 FOR LABOR AND $75.00 IN PARTS VERSUS THE OTHER RIGHT? RESEARCH,RESEARCH

Yes

RECHARGING AC SYSTEM

1. Turn the car on and turn AC on HIGH
2. Locate the low side AC line (will have a valve and cap similar to the cap on a tire)
3. Insert the oil or R-134A can to the hose (Do not turn the screw to puncture the can yet)
4. Insert the other end of the refill hose to the low side valve
5. Puncture the R-134A can with the screw on the refill hose
6. You should feel the system suction the refrigerant out of the can
7. Check for frost on the AC lines and the air blowing inside the car
8. If frost develops and the air is cold, you've successfully recharged the system and disconnect the refill hose. DO NOT ADD MORE REFRIGERANT...overcharging the system will damage your compressor and will be less effective

Hopefully this answers your question and you're able to get your AC working again. Best of luck.
Greg

no its not. they just screw out

Follow the large tube/hose coming out of the dash to a large aluminum canister that then has a hose or tube that goes to the compressor. It is probably located on the side of that canister (the accumulator) under a little blue screw on cap.. WEAR EYE PROTECTION AND GLOVES WHILE HANDLING REFRIGERANT!

What you will be looking for (in your engine compartment) looks almost like a large valve stem that you would see on a tire. It will probably have some kind of plastic cap on it.

It shouldn't be that difficult to find. You may want to search for an engine compartment diagram for your make/model/year vehicle.