Truck has 250k miles on it. The AC stopped working the other day and while investigating I found that the clutch was no longer on the compressor. I put on a spare I had and engaged it. The compressor started spinning very slowly but the clutch was slipping on the pulley. I checked the air gap and it is within spec. When I was tightening the bolt onto the compressor it would spin without too much extra effort so I think the compressor is not locked up. The car has 250k miles so I'm not overly surprised the old clutch came unscrewed but I'm curious why this one won't turn at the appropriate speed. Any thoughts?
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