A/C clutch replacement on RV2 compressor

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nightman61

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Memphis, TN
Replaced A/C clutch on compressor. Old one started squealing. Installed new one, and ran car. Clutch is engaging, but no noise, and cooling. Let it run and noticed the back of area behind clutch is getting red hot, glowing. I shut car off. Reading some notes, trying to figure out if there are shims possibly required for a clearance issue ? Compressor is not locked up. As stated, when car was started after install, started cooling. What could be causing over heat on compressor?
 
Low on R12 would be my random internet guess. R12 systems have mineral oil in them to lubricate the compressor.
 
The electro-magnet, which sits between the clutch and compressor - if it has a short to ground (or something), i can see the wires turning red/glowing.

I doubt there is anything else that would cause a "glowing" concern.
That said, if it is the clutch coil wiring . . . why hasn't it blown a fuse yet?

BudW
 
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