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A/C Expert: Clutch?

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Old Nov 24, 2013 | 12:34 PM
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A/C Expert: Clutch?

I searched but there is too much stuff on A/C and I'm getting ready for a trip. I hear a sort of grinding / bearing noise and see my A/C compressor clutch is kinda moving (engine running with A/C off). Is this the sign the clutch is bad or a symptom it is low on freon?? I had my A/C on earlier during the drive. 88 10AE.

I suppose I could just remove the belt for the trip if need be.

Thanks...
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Old Nov 24, 2013 | 12:46 PM
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The bearing is no good. You can change the belt to one that bypasses the a/c compressor.
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Old Nov 24, 2013 | 12:46 PM
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From: https://www2.mazda.com/en/100th/
i'm not sure exactly what you're asking, but there IS a bearing in the clutch assembly, and the bearing is what lets the belt part of the thing spin freely.

when you turn the AC on, it energizes a big magnet and this pulls the two halves of the pulley together
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Old Nov 24, 2013 | 02:38 PM
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It looks like the belt goes from the center hub around the A/C compressor across and idler. Can't the belt just be removed? I'm not sure why a belt is needed to bypass the compressor? Can you expand on this a little? Appreciate the info.

Bearing failure. Kinda makes since since I had an odd faint sound in the area for some time, but couldn't quite isolate it. I thought it was an idler bearing.
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Old Nov 24, 2013 | 04:07 PM
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It looks like the belt goes from the center hub around the A/C compressor across and idler. Can't the belt just be removed? I'm not sure why a belt is needed to bypass the compressor? Can you expand on this a little? Appreciate the info.

Bearing failure. Kinda makes since since I had an odd faint sound in the area for some time, but couldn't quite isolate it. I thought it was an idler bearing.

Ugh, its a Nippon Denso compressor.
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Old Nov 24, 2013 | 09:35 PM
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Yes, the belt can be removed without problem. You just won't have AC, which won't even be necessary right now.
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Old Nov 25, 2013 | 05:54 AM
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Thanks for the belt info. I'll remove it until I have a chance to swap out the compressor. It was quite warm yesterday here in FL but turned cold. Regardless, I always like to cycle the system every couple weeks to keep things lubricated - habit from my parents I picked up..
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Old Nov 25, 2013 | 05:27 PM
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O yeah i forgot that belt just can be removed. Duhhh brain fart!
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Old Nov 27, 2013 | 11:26 AM
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Well I took the A/C belt off and ordered a remanufactured Nippon Denso compressor, and I think I have a drier on-hand that will fit. Any installation advice???

I did my 90' A/C compressor install with engine out of the car during my engine rebuild, but the 88' engine is in the car. Will I be able to jack the engine high enough to get the lower A/C compressor bolts out?
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Old Nov 27, 2013 | 04:55 PM
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I was helping a friend replace his AC Compressor on his 2nd Gen. You can remove it without jacking up the engine, but it is a tight fit to get it out.

Before you pull the compressor, I'd do a leak test to make sure the hoses are good.
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Old Nov 27, 2013 | 06:09 PM
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Thanks for the info. That is really good advice and I didn't think about that. I'll put it on my list to accomplish before removing the compressor. Luckily, I still have my portable nitrogen cylinder I used for my other A/C installation. Thanks again!
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