So long story short, cracked a line, replaced, refilled (I think it was overfilled though) few days later driving down the road hear hissing noise and refrigerant comes out form under my hood, all of it in about 3 minutes. Got home, couldn't see exactly where it came from but best guess is this thing that is on the bottom of the compressor. Evaced the lines and refilled and there is no obvious leak like there was before.
Picture if from another compressor, it has like a plexiglass window on the bottom, the one in my compressor is cracked though. It apears to be some sort of regulating valve, its a spring loaded piston type thing looks like oil might go through the top and come out in the middle when pressure is high enough?
I'm trying to figure out if this thing being cracked at the end (where the plexiglass is) could have been the cause of the leak. I've dyed the system in the meantime.
Also need to know what it is so if it is broken I can try and get a new one, doesn't look like I can buy it separate through usual sources.
It looks like a control valve, we have them listed HERE. They vary by color.
Thanks, none of them look to be the same, this is out of a denso compressor.
What exactly is the function of this? I refilled the AC and nothing's leaking/no dye showing :/ doesn't make sense to go from a massive leak to nothing.
Guesses could be restricted by listing the make, year, model, and engine, this compressor came out of. Also having some kind of ruler in the photo so one could judge the size of it.
In the last 25 years, the proliferation of automotive components has grown at an astronomical/exponential rate. What hasn't grown is the number of brain cells nature has bestowed upon us. Was going through my drawer of special purpose one time tools I have purchased, without even the slightest recollection of why I even purchased them. But can't argue they are there and I needed them at the time.
I don't know, looks like some obsolete pressure relieve valve that is no longer legal for use, but just a wild guess.
If this is in a Denso (6C17) variable compressor, there is only one source that I know of that services this valve. Santech Industries has the valve available as part number: Main valve is MT2251, Sub control valve can be disassembled and cleaned. If this is a late model 7SBU series, let us know, we may have a location for that valve also.
The strongest reason for the people to retain the right to keep and bear arms is, as a last resort, to protect themselves against tyranny in government.
Simple explanation: It regulates refrigerant flow versa compressor RPM.
So at higher rpms as pressure goes up it opens and routes refrigerant back to the suction side?
They are calling the 7SBU16C a variable displacement compressor and this is the control valve for it.
Just posted this photo because if I opened a compressor, expect to see some corrosion on the outside, but the inside has to be clean. Looks like your valve was way overheated at one time with all the burnt oil on it that makes me wonder what the rest of the system looks like. Maybe time to be looking at a new compressor. What does the clutch look like?
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