I don't know yet if there is such a thing as a rebuild kit for the R-134a refrigerant compressor in a 1997 Chevy Tahoe? I will look later via Google. If so, has anyone tried rebuilding one? I don't use the device (I'm used to brutal heat), but the fan belt loops around it so I cannot stop the device's pulley from being driven.
At first I thought there was a nick in the fan belt that was causing the rapid ticking noise, but the frequency is too fast: it ticks several times per belt revolution. There is probably an electric clutch on the R-134a refrigerant compressor, and something in the clutch is making the noise once per revolution of the pulley.
I would just live with the noise, but the ticking might be a symptom of a worse problem, and if the compressor seizes, the whole belt-driven system will be royally screwed.
Ideally I could perhaps replace the clutch on the R-134a refrigerant compressor without having to vacuate the system.
Two of the three horses are also injured. I assume there aren't any rebuild kits for them, poor things.