Is the port adapter (the part into which the Schrader valve screws) removable from the liquid line? If so, you might be able to locate another adapter with the same thread that accepts a more readily available Schrader valve.

Yes, there are pressure-relief valves on mobile vehicle A/C systems that will release refrigerant and oil, as you experienced, under conditions of excessively high system pressures. The blinking light indicates a problem as well. Do you have any record of the A/C system being serviced by the previou...

mikeh85 wrote: ↑Wed Mar 24, 2021 11:09 am So sounds like I just bit the bullet, get the OEM valve core and a new cap?

Nah...don't waste your money on an expensive OEM part if you don't have to. Check first with Century Tool & Equipment. They stock quite a few Schrader valves, one of which surely will match your original.

Could you please clarify your statement ‘The refrigerant amount in a MVAC system is charged exclusively by weight’? I don't work on residential or commercial A/C systems. But the way I understand it, refrigerant is charged into such systems until the optimum superheat and subcooling temperatures ar...

The aftermarket Schrader valve that you installed looks quite a bit different than the OEM part. Century Tool & Equipment might have one that better matches the OEM component. Bear in mind that the cap is what does the sealing, not the Schrader. I would replace the cap as well, making sure that ...

My understanding is that the TXV is controlled by a sensing bulb that sits at the exit of the evaporator to sense the superheat. That's true with a TXV that uses a sensing bulb. Self-contained H-block TXV's do essentially the same thing but have internal sensing. However, superheat (and subcooling)...

McMaster-Carr and Century Tool & Equipment also carry the shims you need.

The correct gap is one in which the clutch plates don't drag when the clutch is disengaged but not so wide that the clutch only sometimes engages or fails to engage at all. A gap of 0.6 mm (0.024 in.) is in the ballpark, so to speak, although I wouldn't go any wider than that. Typically, I try for a...

Presuming the charge isn't low, If the evaporator temp sensor is out of spec, it could cause the evaporator core and suction line to ice-up by keeping the compressor on too long. Do you notice any reduced airflow from the vents and/or the blower changing its sound after running the system for 15 min...

Maybe I missed it. I read it as it was locked up after sitting. I'm not clear on that, either. OP, did the compressor seize after you ran it a while and after the six-month hiatus or was it locked up immediately on starting the engine? I noticed in one view that the pictured compressor has a 1/4&qu...